Gas leakage alarm method for natural gas vehicle

Abstract

The invention discloses a gas leakage alarm method for a natural gas vehicle. The gas leakage alarm method comprises the steps that the gas leakage condition, detected by a leakage detection sensor, of a fuel oil pipeline is obtained; judging whether gas leakage occurs or not; if yes, according to the fuel gas leakage condition, leakage grades of the fuel oil pipeline are divided; and sending to different alarm devices according to the leakage level of the fuel oil pipeline so as to send corresponding alarm tasks. The gas leakage alarm method of the natural gas vehicle has the advantages that the safe operation of the vehicle is improved through a multi-device alarm system, and the like.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas vehicle alarms, and in particular to a gas leakage alarm method for natural gas vehicles. Background Art

[0002] The gas leak alarm method for natural gas vehicles in the related art is a separate leak alarm system. When the leak detection sensor detects a gas leak and generates an alarm signal, it is transmitted to the alarm device for alarm. It cannot interact with the entire vehicle, and the alarm method is relatively single, which affects the safe operation of the vehicle. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a gas leakage alarm method for a natural gas vehicle, which has the advantages of improving the safe operation of the vehicle through a multi-device alarm system.

[0004] To achieve the above-mentioned purpose, a gas leakage alarm method for a natural gas vehicle is proposed according to an embodiment of the present invention, comprising: obtaining the gas leakage situation of the fuel pipeline detected by the leakage detection sensor; judging whether a gas leakage occurs; if so, classifying the leakage level of the fuel pipeline according to the gas leakage situation; and sending the leakage level of the fuel pipeline to different alarm devices to send the corresponding alarm task.

[0005] According to the gas leakage alarm method for natural gas vehicles of the embodiment of the present invention, the gas leakage of the fuel pipeline can be monitored in real time through the leakage detection sensor, and the information is sent to the control unit. The control unit classifies the leakage level according to the leakage situation and sends the corresponding alarm task to different alarm devices. This enables the driver or relevant personnel to receive the alarm in time and take corresponding measures, thereby improving the safe operation of the vehicle.

[0006] Different alarm tasks are sent according to the leakage level, so that the driver or relevant personnel can take appropriate measures according to the severity of the leakage. For example, a minor leakage can be handled in time to avoid the problem from expanding, while a serious leakage requires a more urgent response. The alarm device can use a variety of methods to sound the alarm, such as sound and light alarms, mobile phone notifications, etc., which increases the possibility of the driver or relevant personnel receiving the alarm and improves safety.

[0007] Therefore, the gas leakage alarm method for a natural gas vehicle according to the embodiment of the present invention has the advantages of improving the safe operation of the vehicle through a multi-device alarm system.

[0008] According to some specific embodiments of the present invention, before obtaining the gas leakage situation of the automobile fuel pipeline, the method further includes: performing a self-test on the leak detection sensor; and preheating the leak detection sensor.

[0009] According to some specific embodiments of the present invention, the leak detection sensor converts the gas concentration signal into a voltage signal and continuously outputs a detection signal, the output frequency of the detection signal is 4 Hz, and the signal duty cycle is 50%.

[0010] According to some specific embodiments of the present invention, after a self-inspection of the leakage detection sensor, if a fault is detected in the leakage detection sensor, a fault signal is sent to the instrument panel to issue a fault warning, and the signal is uploaded to the vehicle remote platform and the vehicle after-sales service platform.

[0011] According to some specific embodiments of the present invention, obtaining the gas leakage situation of the fuel pipeline includes: collecting the gas concentration of the vehicle fuel pipeline; and determining the gas leakage situation according to the gas concentration.

[0012] According to some specific embodiments of the present invention, the fuel pipeline is classified into leakage levels according to the gas leakage situation, including: determining the output voltage according to the gas concentration value; and determining the leakage level according to the relationship between the output voltage and a voltage threshold.

[0013] According to some specific embodiments of the present invention, the leakage level is determined according to the relationship between the output voltage and the voltage threshold, including: judging whether the output voltage corresponding to the gas leakage concentration value is greater than the voltage corresponding to the first concentration threshold and less than the voltage corresponding to the second concentration threshold; if so, executing a minor leakage alarm task; judging whether the output voltage corresponding to the gas leakage concentration value is greater than or equal to the voltage corresponding to the second concentration threshold and less than the voltage corresponding to the third concentration threshold; if so, executing a moderate leakage alarm task; judging whether the output voltage corresponding to the gas leakage concentration value is greater than the voltage corresponding to the third concentration threshold; if so, executing a severe leakage alarm task.

[0014] According to some specific embodiments of the present invention, the minor leakage alarm task includes: sending an alarm signal to a dashboard for sound and light alarm.

[0015] According to some specific embodiments of the present invention, the moderate leakage alarm task includes: sending an alarm signal to a dashboard for sound and light alarm, and sending warning information to a communication device.

[0016] According to some specific embodiments of the present invention, the severe leakage alarm task includes: sending an alarm signal to the instrument panel for sound and light alarm, sending warning information to the communication equipment, and sending a fault signal to the vehicle service after-sales platform.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a flow chart of a gas leakage alarm method for a natural gas vehicle according to an embodiment of the present invention; Figure 2 The present invention is a flow chart of determining a leakage level of a gas leakage alarm method for a natural gas vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0021] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0022] The following describes a gas leakage alarm method for a natural gas vehicle according to an embodiment of the present invention with reference to the accompanying drawings.

[0023] like Figure 1 As shown is a flow chart of a gas leakage alarm method for a natural gas vehicle according to an embodiment of the present invention.

[0024] Obtain the gas leakage status of the fuel line detected by the leak detection sensor.

[0025] Determine whether a gas leak has occurred.

[0026] If so, the fuel pipeline is classified into leakage levels according to the gas leakage situation.

[0027] According to the fuel line leakage level, it is sent to different alarm devices to send corresponding alarm tasks.

[0028] Leak detection sensors are used to monitor key parts of the fuel pipeline in real time, such as high-risk leakage areas around gas cylinders, engine interfaces, and fuel pipeline joints. The detected gas concentration is sent to the control unit to determine whether the gas is leaking, and then the leakage level is divided to achieve the corresponding alarm task.

[0029] According to the gas leakage alarm method for natural gas vehicles of the embodiment of the present invention, the gas leakage of the fuel pipeline can be monitored in real time through the leakage detection sensor, and the information is sent to the control unit. The control unit classifies the leakage level according to the leakage situation and sends the corresponding alarm task to different alarm devices. This enables the driver or relevant personnel to receive the alarm in time and take corresponding measures, thereby improving the safe operation of the vehicle.

[0030] Different alarm tasks are sent according to the leakage level, so that the driver or relevant personnel can take appropriate measures according to the severity of the leakage. For example, a minor leakage can be handled in time to avoid the problem from expanding, while a serious leakage requires a more urgent response. The alarm device can use a variety of methods to sound the alarm, such as sound and light alarms, mobile phone notifications, etc., which increases the possibility of the driver or relevant personnel receiving the alarm and improves safety.

[0031] Therefore, the gas leakage alarm method for a natural gas vehicle according to the embodiment of the present invention has the advantages of improving the safe operation of the vehicle through a multi-device alarm system.

[0032] In some embodiments of the present invention, before obtaining the gas leakage condition of the automobile fuel pipeline, the process further includes performing a self-check on the leak detection sensor and preheating the leak detection sensor.

[0033] The self-check can detect the working status of the leak detection sensor and ensure that the leak detection sensor is in normal operating conditions. If the self-check finds that the leak detection sensor is faulty or not working properly, the system can issue an alarm or take corresponding measures in time to avoid missed or false alarms. By preheating the leak detection sensor, the preheating time required for the leak detection sensor during the actual monitoring process can be reduced, thereby improving its response speed. Especially in low ambient temperatures, the sensitivity and response speed of the leak detection sensor may be affected, and preheating can ensure that it can quickly and accurately detect gas leaks.

[0034] In some embodiments of the present invention, the leak detection sensor converts the gas concentration signal into a voltage signal and continuously outputs a detection signal. The output frequency of the detection signal is 4 Hz, and the signal duty cycle is 50%.

[0035] Among them, the preheating time is kept at least 147s to ensure that the leak detection sensor is fully preheated to the operating temperature, thereby improving its performance and accuracy. During the preheating process, the leak detection sensor can gradually adapt to the environmental conditions and ensure that it can quickly respond to gas leaks during normal operation. The output frequency of 4Hz and the signal duty ratio of 50% are optimized settings. The appropriate frequency can increase the sensitivity and real-time performance of the detection, which helps to detect potential gas leaks in a timely manner. The appropriate signal duty ratio can balance the detection and standby time, reduce energy consumption and improve the energy efficiency of the system.

[0036] In some embodiments of the present invention, after a self-check of the leak detection sensor, if a fault is detected in the leak detection sensor, a fault signal is sent to the instrument panel to issue a fault warning, and the signal is uploaded to the vehicle remote platform and the vehicle after-sales service platform.

[0037] By sending fault signals to the dashboard, the driver can obtain fault information immediately and take necessary countermeasures, such as stopping the vehicle for inspection, to ensure safety. Uploading fault information to the vehicle remote platform can achieve real-time monitoring of the vehicle status. Relevant personnel can understand the vehicle status in a timely manner through the remote monitoring system, providing support for subsequent management and troubleshooting.

[0038] In some embodiments of the present invention, obtaining the gas leakage condition of the fuel pipeline includes collecting the gas concentration of the vehicle fuel pipeline and determining the gas leakage condition according to the gas concentration.

[0039] By collecting the gas concentration of the fuel pipeline, real-time monitoring of the gas status can be achieved, so that timely warning can be given to ensure vehicle safety. According to the analysis of the collected gas concentration data, it is possible to accurately determine whether there is a gas leak. This quantitative analysis can improve the accuracy of fault diagnosis and avoid unnecessary safety hazards caused by false alarms or missed alarms.

[0040] In some embodiments of the present invention, the fuel pipeline is classified into leakage levels according to the gas leakage situation, including determining the output voltage according to the gas concentration value and determining the leakage level according to the relationship between the output voltage and the voltage threshold.

[0041] By dividing the gas leakage into different leakage levels, the leakage can be monitored in a refined manner. Different leakage levels can reflect different degrees of safety hazards and provide basic data for subsequent processing. According to the relationship between the output voltage and the voltage threshold, multiple alarm levels can be set to take corresponding measures according to the leakage level in time.

[0042] In some embodiments of the present invention, Figure 2As shown, determining the leakage level according to the relationship between the output voltage and the voltage threshold includes judging whether the output voltage corresponding to the gas leakage concentration value is greater than the voltage corresponding to the first concentration threshold and less than the voltage corresponding to the second concentration threshold. If so, a minor leakage alarm task is executed. Judging whether the output voltage corresponding to the gas leakage concentration value is greater than or equal to the voltage corresponding to the second concentration threshold and less than the voltage corresponding to the third concentration threshold. If so, a moderate leakage alarm task is executed. Judging whether the output voltage corresponding to the gas leakage concentration value is greater than the voltage corresponding to the third concentration threshold. If so, a severe leakage alarm task is executed.

[0043] For example, the first concentration threshold can be set to 10%, the second concentration threshold can be set to 30%, and the third concentration threshold can be set to 50%. The threshold is set by converting the pre-set concentration threshold into a voltage signal. After the actual electrical signal is given to the control unit, a judgment is made based on the voltage threshold.

[0044] The gas leakage alarm method for natural gas vehicles of the embodiment of the present invention can realize graded alarm, and provide corresponding alarm information to users according to different gas leakage concentrations. By classifying the leakage situation into slight, moderate and severe, it helps users to understand the severity of the leakage more clearly.

[0045] By setting different alarm levels, vehicles can take appropriate safety measures in different situations, provide early warnings, and reduce the possibility of accidents or fires caused by leaks.

[0046] In some embodiments of the present invention, the minor leakage alarm task includes sending an alarm signal to the instrument panel for sound and light alarm. For example, when the minor leakage alarm task is triggered, the control unit will immediately activate the sound and light alarm device, and the buzzer on the instrument panel will sound an alarm at 4Hz while the red light will flash. The driver can take corresponding actions according to the alarm information to ensure the safety of the vehicle.

[0047] In some embodiments of the present invention, the moderate leakage alarm task includes sending an alarm signal to a dashboard for sound and light alarm, and sending a warning message to a communication device.

[0048] By sending alarm information to the instrument panel and communication equipment at the same time, it ensures that the driver can immediately receive important warning information, whether while driving or in other environments.

[0049] For example, the leak detection sensor monitors gas leaks, generates a voltage signal corresponding to the leakage concentration in real time and continuously sends it to the vehicle's control unit. The control unit immediately sends a command to the dashboard to activate the sound and light alarm device. The warning light on the dashboard starts flashing and a loud alarm sounds to attract the driver's attention.

[0050] At the same time, the control system sends a warning message to the preset communication device through the vehicle's communication module (such as 4G / 5G module or on-board Wi-Fi, etc.), which may include "The vehicle detects a moderate gas leak, please stop immediately to check and feedback."

[0051] In some embodiments of the present invention, the severe leakage alarm task includes sending an alarm signal to the instrument panel for sound and light alarm, sending warning information to the communication equipment, and sending a fault signal to the vehicle service after-sales platform.

[0052] For example, the leak detection sensor monitors gas leaks, generates a voltage signal corresponding to the leakage concentration in real time and continuously sends it to the vehicle's control unit. The control unit immediately sends a command to the dashboard to activate the sound and light alarm device. The yellow warning light on the dashboard starts flashing and a loud alarm sounds at 1Hz to attract the driver's attention.

[0053] At the same time, the control system sends a warning message to the preset communication device through the vehicle's communication module (such as 4G / 5G module or on-board Wi-Fi, etc.), which may include "The vehicle has detected a serious gas leak, please stop immediately and check for feedback."

[0054] In addition, after receiving a fault signal, the vehicle service after-sales platform can immediately dispatch maintenance personnel, or conduct remote fault analysis and guidance to ensure that targeted solutions are quickly in place.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gas leak alarm method for a natural gas vehicle, characterized in that: include: Obtaining gas leakage conditions of the fuel pipeline detected by the leak detection sensor; Determine whether a gas leak occurs; If yes, classify the fuel pipeline into leakage levels according to the gas leakage situation; According to the fuel line leakage level, it is sent to different alarm devices to send corresponding alarm tasks.

2. The gas leakage alarm method for natural gas vehicles according to claim 1, characterized in that: Before obtaining the gas leakage situation of the automobile fuel pipeline, the method further includes: Perform self-test on leak detection sensors; Preheat the leak detection sensor.

3. The gas leakage alarm method for natural gas vehicles according to claim 2, characterized in that: The leak detection sensor converts the gas concentration signal into a voltage signal and continuously outputs a detection signal. The output frequency of the detection signal is 4 Hz, and the signal duty cycle is 50%.

4. The gas leakage alarm method for natural gas vehicles according to claim 2, characterized in that: After the leak detection sensor is self-checked, If the leak detection sensor is detected to be faulty, A fault signal will be sent to the dashboard for a fault warning, and the fault will be uploaded to the vehicle remote platform and vehicle after-sales service platform.

5. The gas leakage alarm method for natural gas vehicles according to claim 1, characterized in that: Obtain gas leak information from the fuel line, including: Collect the gas concentration of the automobile fuel pipeline; The gas leakage situation is judged according to the gas concentration.

6. The gas leakage alarm method for natural gas vehicles according to claim 1, characterized in that: The fuel pipeline is classified into leakage levels according to the gas leakage situation, including: Determine the output voltage according to the gas concentration value; The leakage level is determined according to the relationship between the output voltage and the voltage threshold.

7. The gas leakage alarm method for natural gas vehicles according to claim 6, characterized in that: Determining the leakage level according to the relationship between the output voltage and the voltage threshold includes: Determine whether the output voltage corresponding to the gas leakage concentration value is greater than the voltage corresponding to the first concentration threshold and less than the voltage corresponding to the second concentration threshold; If so, the minor leakage alarm task is executed; Determine whether the output voltage corresponding to the gas leakage concentration value is greater than or equal to the voltage corresponding to the second concentration threshold and less than the voltage corresponding to the third concentration threshold; If yes, the moderate leakage alarm task is executed; Determine whether the output voltage corresponding to the gas leakage concentration value is greater than the voltage corresponding to the third concentration threshold; If so, execute the severe leakage alarm task.

8. The gas leakage alarm method for natural gas vehicles according to claim 7, characterized in that: The minor leakage alarm task includes: sending an alarm signal to the instrument panel for sound and light alarm.

9. The gas leakage alarm method for natural gas vehicles according to claim 7, characterized in that: The moderate leakage alarm task includes: sending an alarm signal to the instrument panel for sound and light alarm, and sending warning information to the communication equipment.

10. The gas leakage alarm method for natural gas vehicles according to claim 7, characterized in that: The severe leakage alarm task includes: sending an alarm signal to the instrument panel for sound and light alarm, sending warning information to the communication equipment, and sending a fault signal to the vehicle service after-sales platform.

Images