System for preventing oil leakage and engineering machinery

Abstract

The invention relates to a system for preventing oil leakage, which comprises a power supply device, a fuel oil liquid level sensor and a controller which are arranged on engineering machinery, the power supply device continuously supplies power to the fuel oil liquid level sensor and the controller, the controller acquires fuel oil liquid level information from the fuel oil liquid level sensor, and the fuel oil liquid level information is transmitted to the engineering machinery. And under the condition that the descending speed of the fuel oil liquid level is lower than a set first speed threshold value, the controller determines that the oil leakage risk exists. According to the oil leakage prevention system, the power supply device continuously supplies power to other devices in the oil leakage prevention system, so that when the electronic control system of the engineering machinery is in the shutdown state, the oil leakage risk can be monitored. In addition, the system disclosed by the invention can also avoid false alarm when an operator cleans the oil tank.

Description

Technical Field

[0001] The present disclosure relates to the field of engineering machinery and control technology, and in particular to a system for preventing oil leakage and an engineering machinery. Background Art

[0002] An excavator is a type of engineering machinery widely used in field operations, such as mining and earthwork stripping in mines, airport and road construction, etc. This type of operation is characterized by a long construction period, a simple working environment, and a remote working location. Therefore, the location where the excavator is shut down and stored is generally outdoors. In addition, the fuel tank of the excavator is generally large to meet the requirements of continuous operation, so a considerable volume of fuel is generally stored in the fuel tank. As a result, there is a risk of fuel theft when the excavator is shut down. In addition, when the excavator is operating, there is also a risk of external falling objects hitting the fuel tank, causing damage to the fuel tank, fuel leakage, and fire.

[0003] At present, there are mainly the following technologies to prevent oil theft:

[0004] 1. The engine speed is measured by the engine speed sensor. When the speed sensor detects that the engine is not moving and the fuel level sensor detects that the fuel level has dropped, the controller determines that oil theft or oil leakage has occurred. The anti-oil theft device will make an on-site sound and light alarm, and send the alarm signal to the excavator user through the remote communication module of the GSM SMS. (For example, see Chinese patent application CN200920233309)

[0005] 2. By installing an anti-theft sensor in a special fuel tank cap, when the fuel tank cap is opened, the anti-theft device will give an on-site sound and light alarm when the fuel tank cap is opened. In addition, when the fuel level sensor detects that the fuel level has dropped, the anti-theft device will also give an on-site sound and light alarm. (For example, see Chinese patent application CN201220132855)

[0006] 3. By adding a vibration acceleration sensor to the fuel tank shell, an audible and visual alarm is issued for the fuel tank drilling method performed by the fuel thief. In addition, by detecting the state of the ignition lock, it is ensured that when the vehicle is turned off, the anti-fuel theft device will also issue an on-site audible and visual alarm when the fuel level sensor detects that the fuel level has dropped. At the same time, the above two alarm signals will be sent to the vehicle driver via GPRS. (For example, see Chinese patent application CN202022793051)

[0007] However, the above-mentioned method for preventing fuel from being stolen has the following defects:

[0008] In Scheme 1, the engine speed is measured by the engine speed sensor and used as a criterion. When the speed sensor detects that the engine is not moving and the fuel level sensor detects that the fuel level has dropped, the controller determines that oil theft or oil leakage has occurred. When the excavator user cleans the excavator fuel tank, the alarm device will give a false alarm. At the same time, to prevent the battery from running out of power, the excavator user will cut off the battery power supply according to the requirements of the excavator operation manual after finishing a day's work. When the entire vehicle is powered off, the fuel level sensor, controller, sound and light alarm device, and GSM SMS remote communication module will not work due to power outage. Therefore, in actual use, it cannot prevent oil theft.

[0009] Solution 2 is applied to trucks. Solution 2 requires setting the status of the anti-theft device first to prevent theft of fuel by opening the fuel tank cap. Since the anti-theft status needs to be set manually, when the truck driver forgets to set the anti-theft device, the anti-theft device is invalid. At the same time, although the anti-theft device will also issue an on-site sound and light alarm when the fuel level sensor detects a drop in the fuel level, it cannot avoid false alarms when the fuel tank is cleaned. In addition, since fuel vehicles such as trucks are different from construction machinery such as excavators, there is no need to cut off the battery power when parking at night, so this solution is not suitable for construction machinery such as excavators.

[0010] Solution 3 is also used in the truck field. Solution 3 detects the state of the ignition lock to ensure that when the vehicle is turned off, the anti-fuel theft device will issue an on-site sound and light alarm when the fuel level sensor detects that the fuel level has dropped. This anti-fuel theft device cannot avoid false alarms when the fuel tank is cleaned. In addition, since fuel vehicles such as trucks are different from construction machinery such as excavators, it is not necessary to cut off the battery power when parking at night, so this solution is not suitable for construction machinery such as excavators. Summary of the invention

[0011] The starting point of the present disclosure is to provide a system and engineering machinery for preventing oil leakage, thereby solving at least one of the above-mentioned problems existing in the prior art.

[0012] An embodiment of the present disclosure provides a system for preventing oil leakage, the system comprising a power supply device, a fuel level sensor and a controller arranged on an engineering machine, wherein:

[0013] The power supply device continuously supplies power to the fuel level sensor and the controller.

[0014] The fuel level sensor detects the fuel level in the fuel tank.

[0015] The controller obtains fuel level information from the fuel level sensor, wherein when a decreasing speed of the fuel level is lower than a set first speed threshold, the controller determines that there is a risk of oil leakage.

[0016] Optionally, when the speed at which the fuel level drops is higher than a set second speed threshold, the controller determines that there is a risk of oil theft.

[0017] Optionally, when the speed at which the fuel level drops is higher than a set second speed threshold, the controller determines whether the distance between the construction machinery and the operator's mobile terminal device is greater than a set distance threshold. If the judgment result is yes, the controller determines that there is a risk of oil theft.

[0018] Optionally, when the controller fails to receive fuel level information from the fuel level sensor, the controller determines that there is a risk of fuel theft.

[0019] Optionally, the system further includes a communication transmitter, and the power supply device continuously supplies power to the communication transmitter. When the controller determines that there is a risk of oil leakage and / or oil theft, the controller sends oil leakage and / or oil theft risk notification information to the operator's mobile terminal device via the communication transmitter.

[0020] Optionally, the controller is also connected to the power supply device for communication and obtains the remaining power information of the power supply device. When the remaining power of the power supply device is lower than a set power threshold, the controller sends charging notification information to the operator's mobile terminal device through the communication transmitter.

[0021] Optionally, the system further comprises an audible and visual alarm device, and the power supply device continuously supplies power to the audible and visual alarm device, wherein when the controller determines that there is a risk of oil leakage and / or oil theft, the controller controls the audible and visual alarm device to emit an audible and visual alarm.

[0022] Optionally, the system also includes a communication receiver and an audible and visual alarm device, and the power supply device continuously supplies power to the communication receiver and the audible and visual alarm device, wherein when the controller receives oil leakage and / or oil theft risk confirmation information from an operator's mobile terminal device through the communication receiver, the controller controls the audible and visual alarm device to emit an audible and visual alarm.

[0023] Optionally, the power supply device is specifically used to supply power to other devices in the system for preventing oil leakage; or, the power supply device is not only used to supply power to other devices in the system for preventing oil leakage, but also used to supply power to the electronic control system of the engineering machinery.

[0024] According to yet another aspect of the present disclosure, a construction machine is provided, wherein the construction machine comprises the system for preventing oil leakage provided by the present disclosure.

[0025] The system for preventing oil leakage and the engineering machinery of the embodiments of the present disclosure have at least the following advantages:

[0026] In the present disclosure, since the power supply device continuously supplies power to other devices in the system for preventing oil leakage (for example, fuel level sensors and controllers, etc.), the risk of oil theft and / or oil leakage can also be monitored when the electronic control system of the construction machinery is in the shutdown state.

[0027] In the present disclosure, by comparing the speed at which the fuel level drops with the set first speed threshold and second speed threshold, the oil leakage risk and the oil theft risk are distinguished according to the speed at which the fuel level drops, and the corresponding risks are notified to the operator.

[0028] In the present disclosure, when there is a risk of oil theft, an audible and visual alarm can be issued by the audible and visual alarm device, thereby warning the oil thief and forcing him to stop the oil theft.

[0029] In the present disclosure, in the case where the fuel level drops rapidly (i.e., the speed at which the fuel level drops is higher than a set second speed threshold), only when the distance between the construction machinery and the operator's mobile terminal device is greater than the set distance threshold, is it considered that there is a risk of oil theft and an oil theft risk notification message is sent to the operator's mobile terminal device, thereby avoiding false alarms when the operator is cleaning the fuel tank.

[0030] In the present disclosure, a power supply device specifically used to supply power to other devices in the system for preventing oil leakage may be provided, thereby extending the working time of the power supply device and reducing the frequency of charging the power supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 thus cannot be considered as limiting the present disclosure. The following will be described in detail with reference to the drawings, wherein:

[0032] Figure 1 A system for preventing oil theft and / or oil leakage according to one embodiment of the present disclosure is shown.

[0033] Figure 2 A system for preventing oil theft and / or oil leakage according to another specific embodiment of the present disclosure is shown.

[0034] Figure 3 A system for preventing oil theft and / or oil leakage according to yet another specific embodiment of the present disclosure is shown.

[0035] Figure 4 A system for preventing oil theft and / or oil leakage according to yet another specific embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0036] Embodiments of the present disclosure are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present disclosure. However, it is obvious to those skilled in the art that the implementation of the present disclosure may not have some of these specific details. In addition, it should be understood that the present disclosure is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present disclosure, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless explicitly stated in the claims.

[0037] Now refer to Figure 1 , showing a system for preventing oil theft and / or oil leakage according to a specific embodiment of the present disclosure.

[0038] like Figure 1 As shown, the system includes: a battery 1, a switch 2, a fuel level sensor 3, a controller 4 and a communication transmitter 5.

[0039] The battery 1 is used to continuously supply power to the switch 2, the fuel level sensor 3, the controller 4 and the communication transmitter 5. A controller with a lower power consumption can be used to save electricity.

[0040] When the construction machinery is working, the switch 2 is closed, so that the battery 1 is used to supply power to the electronic control system of the construction machinery and the fuel level sensor 3, the controller 4 and the communication transmitter 5. When the construction machinery is stopped, the switch 2 is opened, so that the power supply to the electronic control system of the construction machinery stops, and the electronic control system of the construction machinery is shut down. At this time, the battery 1 only supplies power to the fuel level sensor 3, the controller 4 and the communication transmitter 5.

[0041] The fuel level sensor 3 detects the fuel level in the fuel tank of the construction machine.

[0042] The controller 4 is in communication connection with the fuel level sensor 3 and the communication transmitter 5, and the controller 4 obtains the state of the switch 2 and the fuel level information monitored by the fuel level sensor 3. When the switch 2 is disconnected (i.e., the electronic control system of the engineering machinery is in the off state) and the fuel level drops, the controller 4 determines that there is a risk of oil theft and / or oil leakage. At this time, the controller 4 sends the oil theft and / or oil leakage risk notification information to the operator's mobile terminal device through the communication transmitter 5 to notify the operator that there is a risk of oil theft and / or oil leakage in the engineering machinery.

[0043] Generally, it can be considered that: if the fuel level drops slowly, oil leakage may have occurred; if the fuel level drops rapidly, oil theft may have occurred. Therefore, a first speed threshold and a second speed threshold can be set. If the speed at which the fuel level drops is lower than the first speed threshold, it is considered that oil leakage may have occurred, and the controller 4 sends oil leakage risk notification information to the operator's mobile terminal device through the communication transmitter 5. If the speed at which the fuel level drops is higher than the second speed threshold, it is considered that oil theft may have occurred, and the controller 4 sends oil theft risk notification information to the operator's mobile terminal device through the communication transmitter 5. The specific values ​​of the first speed threshold and the second speed threshold can be set according to the actual situation by those skilled in the art, and these variations do not exceed the protection scope of the present disclosure.

[0044] In addition, in order to prevent the operator's fuel tank cleaning behavior from being mistakenly identified as oil theft. When the speed of the fuel level drop is higher than the second speed threshold, the controller 3 can determine whether the distance between the engineering machinery and the operator's mobile terminal device is greater than the set distance threshold. For example, the engineering machinery can obtain the location information (such as GPS location information) from the operator's mobile terminal device through any suitable wireless communication connection method, and compare the location of the engineering machinery itself with the location of the mobile terminal device. Only when the distance between the engineering machinery and the operator's mobile terminal device is greater than the set distance threshold, the controller 3 will consider that there is a risk of oil theft and send the oil theft risk notification information to the operator's mobile terminal device through the communication transmitter 5. When the distance between the engineering machinery and the operator's mobile terminal device is not greater than the set distance threshold, it is considered that the operator is cleaning and clearing the fuel tank of the engineering machinery. At this time, it can be considered that there is no risk of oil theft and no oil theft risk notification information is sent.

[0045] In addition, when the controller 4 cannot receive the fuel level information from the fuel level sensor, it can be considered that the fuel thief has damaged the fuel level sensor 3 and is stealing fuel. At this time, the controller 4 can consider that there is a risk of fuel theft and send fuel theft risk notification information to the operator's mobile terminal device through the communication transmitter 5.

[0046] The controller 3 can also communicate with the battery 1 and obtain the remaining power of the battery 1. When the remaining power of the battery 1 is lower than the set power threshold, the controller 3 sends a charging notification message to the operator's mobile terminal device through the communication transmitter 5 to remind the operator that the battery 1 needs to be charged.

[0047] Now refer to Figure 2 , showing another specific embodiment of the system for preventing oil theft and / or oil leakage of the present disclosure. Figure 1 The difference between the systems in Figure 2 The system in the embodiment adds an audible and visual alarm device 6. The controller 3 is in communication connection with the audible and visual alarm device 6. When there is a risk of oil leakage and / or oil theft in the construction machinery, the controller 3 can control the audible and visual alarm device 6 to emit an audible and visual alarm to warn of the oil leakage and / or oil theft on site.

[0048] Now refer to Figure 3 , showing a system for preventing oil theft and / or oil leakage according to another specific embodiment of the present disclosure. Figure 1 The difference between the systems in Figure 3 The system in the embodiment adds an audible and visual alarm device 6 and a communication receiver 7. The controller 4 is in communication connection with the audible and visual alarm device 6 and the communication receiver 7. After receiving the oil leakage and / or oil theft risk notification information, the operator can make a judgment. If the operator believes that there is indeed an oil leakage and / or oil theft risk, the operator can send the oil leakage and / or oil theft risk confirmation information to the engineering machinery through the mobile terminal device. When the communication receiver 7 receives the oil leakage and / or oil theft risk confirmation information from the operator's mobile terminal device, the controller 4 can control the audible and visual alarm device 6 to issue an audible and visual alarm to warn of the oil leakage and / or oil theft behavior on site.

[0049] Now refer to Figure 4 , showing a system for preventing oil theft and / or oil leakage according to another specific embodiment of the present disclosure. Figure 1 The difference between the systems in Figure 4 The battery 1 in the system is specifically used to power the fuel level sensor 3, the controller 4 and the communication transmitter 5. Therefore, there is no need to set up the switch 2. The controller 4 directly obtains the working status of the electronic control system of the construction machinery, and when the electronic control system of the construction machinery is in the off state and the fuel level drops, the communication transmitter 5 sends the oil theft and / or oil leakage risk notification information to the operator's mobile terminal device. The use of a dedicated battery can extend the working time of the battery and reduce the frequency of charging the battery. In addition, when an audible and visual alarm device 6 and a communication receiver 7 are provided, Figure 4 The dedicated battery 1 can also power the sound and light alarm device 6 and the communication receiver 7. These variations do not exceed the protection scope of the present disclosure.

[0050] In an exemplary embodiment of the present disclosure, there is also provided an engineering machine, which includes the system for preventing oil theft and / or oil leakage provided by the present disclosure. The system of the present disclosure can be applied to any type of engineering machine, such as an excavator, a bulldozer, a crane, a road roller, etc., and these variations are also within the scope of protection of the present disclosure.

[0051] Industrial Applicability

[0052] In the present disclosure, since the power supply device continuously supplies power to other devices in the system for preventing oil theft and / or oil leakage (for example, a fuel level sensor, a communication transmitter and a controller, etc.), the risk of oil theft and / or oil leakage can also be monitored when the electronic control system of the construction machinery is in a shutdown state.

[0053] In the present disclosure, by comparing the speed at which the fuel level drops with the set first speed threshold and second speed threshold, the oil leakage risk and the oil theft risk are distinguished according to the speed at which the fuel level drops, and the corresponding risks are notified to the operator.

[0054] In the present disclosure, when there is a risk of oil theft, an audible and visual alarm can be issued by the audible and visual alarm device, thereby warning the oil thief and forcing him to stop the oil theft.

[0055] In the present disclosure, in the case where the fuel level drops rapidly (i.e., the speed at which the fuel level drops is higher than a set second speed threshold), only when the distance between the construction machinery and the operator's mobile terminal device is greater than the set distance threshold, is it considered that there is a risk of oil theft and an oil theft risk notification message is sent to the operator's mobile terminal device, thereby avoiding false alarms when the operator is cleaning the fuel tank.

[0056] In the present disclosure, a power supply device specifically used to supply power to other devices in the system for preventing oil theft and / or oil leakage may be provided, thereby extending the working time of the power supply device and reducing the frequency of charging the power supply device.

[0057] Although the present disclosure has been disclosed as above with preferred embodiments, the present disclosure is not limited thereto. Any changes and modifications made by any person skilled in the art without departing from the spirit and scope of the present disclosure should be included in the protection scope of the present disclosure, and therefore the protection scope of the present disclosure should be subject to the scope defined by the claims.

Claims

1. A system for preventing oil leakage, characterized in that: The system includes a power supply device, a fuel level sensor and a controller arranged on the engineering machinery, wherein: The power supply device continuously supplies power to the fuel level sensor and the controller. The fuel level sensor detects the fuel level in the fuel tank. The controller obtains fuel level information from the fuel level sensor, wherein when a decreasing speed of the fuel level is lower than a set first speed threshold, the controller determines that there is a risk of oil leakage.

2. The system according to claim 1, wherein: When the speed at which the fuel level drops is higher than a set second speed threshold, the controller determines that there is a risk of fuel theft.

3. The system according to claim 1, wherein: When the speed at which the fuel level drops is higher than a set second speed threshold, the controller determines whether the distance between the construction machinery and the operator's mobile terminal device is greater than a set distance threshold. If the judgment result is yes, the controller determines that there is a risk of oil theft.

4. The system according to claim 1, wherein: In the case that the controller fails to receive the fuel level information from the fuel level sensor, the controller determines that there is a risk of fuel theft.

5. The system according to any one of claims 1 to 4, wherein: The system also includes a communication transmitter, and the power supply device continuously supplies power to the communication transmitter. When the controller determines that there is an oil leakage and / or oil theft risk, the controller sends oil leakage and / or oil theft risk notification information to the operator's mobile terminal device through the communication transmitter.

6. The system according to claim 5, wherein: The controller is also connected to the power supply device for communication and obtains the remaining power information of the power supply device. When the remaining power of the power supply device is lower than a set power threshold, the controller sends a charging notification message to the operator's mobile terminal device through the communication transmitter.

7. The system according to any one of claims 1 to 4, wherein: The system further comprises an audible and visual alarm device, and the power supply device continuously supplies power to the audible and visual alarm device, wherein when the controller determines that there is a risk of oil leakage and / or oil theft, the controller controls the audible and visual alarm device to emit an audible and visual alarm.

8. The system according to any one of claims 1 to 4, wherein: The system also includes a communication receiver and an audible and visual alarm device, wherein the power supply device continuously supplies power to the communication receiver and the audible and visual alarm device, wherein when the controller receives oil leakage and / or oil theft risk confirmation information from an operator's mobile terminal device through the communication receiver, the controller controls the audible and visual alarm device to emit an audible and visual alarm.

9. The system according to claim 1, wherein: The power supply device is specifically used to supply power to other devices in the system for preventing oil leakage; or, The power supply device is used not only to supply power to other devices in the system for preventing oil leakage, but also to supply power to the electronic control system of the engineering machinery.

10. An engineering machine, comprising the system for preventing oil leakage according to any one of claims 1 to 9.

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