Monitoring method for vehicle fuel stealing

Abstract

A method for monitoring fuel stealing of a vehicle belongs to the technical field of automotive electronics, aims to solve the problems of high cost, complex circuit wiring and low recognition precision of the conventional device for detecting fuel stealing of the vehicle, and comprises the following steps of: acquiring initial fuel mass percentage by an instrument, reading wake-up times and a wake-up period, and when the wake-up times is greater than an initial value of a counter, starting a timer; entering an enabling wake-up interruption state, starting counting by a timer, and entering an enabling wake-up prohibition state when wake-up times are not greater than an initial value of a counter; the instrument enters an awakening mode, the counter and the counting variable start counting, the instrument collects the current oil mass percentage, whether the initial oil mass percentage is larger than the current oil mass percentage or not and whether the difference between the initial oil mass percentage and the current oil mass percentage is larger than 5% or not are judged, and if yes, it is judged that fuel oil is stolen, and alarm information is sent out. The system is used for monitoring and alarming fuel oil of the vehicle after flameout of the vehicle at regular time.

Description

Technical Field

[0001] The invention relates to a method for monitoring the theft of vehicle fuel, and belongs to the technical field of automobile electronics. Background Art

[0002] With the widespread application of technologies such as artificial intelligence and big data, the logistics industry has developed rapidly, and the proportion of commercial vehicles in the domestic transportation field has increased rapidly. At the same time, some safety issues have also been highlighted. For example, in relatively remote or low-security environments, fuel theft incidents occur frequently, causing great economic losses to users. However, the existing fuel theft detection devices are costly, have complex circuit wiring, and have low recognition accuracy, which reduces the cost-effectiveness of commercial vehicles. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of high cost, complex circuit wiring and low recognition accuracy of the existing vehicle fuel theft detection device, and to provide a vehicle fuel theft monitoring method.

[0004] The present invention provides a method for monitoring vehicle fuel theft, which comprises:

[0005] S1, close the key door, set the counter i=0, and the instrument collects the initial oil volume percentage L0;

[0006] S2. The instrument reads the wake-up times N and wake-up cycle T set by the user s ;

[0007] S3, the instrument determines whether N>i is established, if yes, execute S4, otherwise execute S5;

[0008] S4, enter the wake-up interrupt enable state, the timer starts counting, and the timer count variables T = 0 and T m =0, then execute S6;

[0009] S5, enter the enable wake-up disable state, and then execute S6;

[0010] S6, the instrument enters the sleep mode, and the count variable of the timer T=T+1;

[0011] S7, determine the current T ≥ T s Is it true? If not, return to execute S6. If yes, execute S8.

[0012] S8, the instrument enters the wake-up mode, counter i=i+1, counting variable T m =T m +1, the instrument collects the current oil volume percentage L i ;

[0013] S9, judge L i <L0 and (L0-Li )>5% are both true, if not, then return to S6, if both are true, then it is determined that there is fuel theft, the meter sends an alarm message, and S10 is executed at the same time;

[0014] S10, judge T m >15, if not, the instrument will continue to send out alarm information, if yes, return to execute S6.

[0015] Preferably, S2 the instrument reads the wake-up times N and the wake-up cycle T set by the user s , also includes:

[0016] When the user does not set the wake-up times N and the wake-up cycle T s When , the default value is executed;

[0017] The default value of wake-up times N is 24;

[0018] Wake-up period T s The default value is 30 minutes.

[0019] Preferably, S2 the instrument reads the wake-up times N and the wake-up cycle T set by the user s , the setting range is:

[0020] N = [0, 100];

[0021] T s =[0,1440].

[0022] Preferably, S4 enters the wake-up interrupt enable state, and the key door closing cycle supports self-wake-up.

[0023] 5. The method for monitoring vehicle fuel theft according to claim 1, characterized in that, in step S5, the state of enabling and disabling wake-up is entered, and the key door closing period does not support self-wake-up.

[0024] Preferably, the alarm information sent out by the instrument includes: display text alarm, indicator light alarm, buzzer alarm and theft alarm sent to the user.

[0025] Advantages of the present invention: A method for monitoring vehicle fuel theft adds a fuel theft judgment function to the instrument, which is used to monitor the vehicle after the key door is closed, collect the remaining fuel percentage through the vehicle instrument for comparison, judge and monitor the fuel situation, and send out corresponding theft data and alarm prompts. It has the following advantages:

[0026] 1. High precision and anti-false alarm;

[0027] 2. Ability to set flexible monitoring cycles and monitoring times, which is closer to the requirements of users for the whole vehicle;

[0028] 3. Personalized settings can reduce the dormant power consumption of the vehicle and extend the service life of the battery;

[0029] 4. Increased the practicality of commercial vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flowchart of a vehicle fuel theft monitoring method according to the present invention;

[0031] Figure 2 The present invention is a flow chart of parameter setting of a method for monitoring vehicle fuel theft. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0035] Embodiment 1:

[0036] Combine the following Figure 1 and Figure 2 The present embodiment is described as follows. The present embodiment describes a method for monitoring the theft of vehicle fuel, which includes:

[0037] S1, close the key door, set the counter i=0, and the instrument collects the initial oil volume percentage L0;

[0038] S2. The instrument reads the wake-up times N and wake-up cycle T set by the user s ;

[0039] S3, the instrument determines whether N>i is established, if yes, execute S4, otherwise execute S5;

[0040] S4, enter the wake-up interrupt enable state, the timer starts counting, and the timer count variables T = 0 and T m =0, then execute S6;

[0041] S5, enter the enable wake-up disable state, and then execute S6;

[0042] S6, the instrument enters the sleep mode, and the count variable of the timer T=T+1;

[0043] S7, determine the current T ≥ T s Is it true? If not, return to execute S6. If yes, execute S8.

[0044] S8, the instrument enters the wake-up mode, counter i=i+1, counting variable T m =T m +1, the instrument collects the current oil volume percentage L i ;

[0045] S9, judge L i <L0 and (L0-L i )>5% are both true, if not, then return to S6, if both are true, then it is determined that there is fuel theft, the meter sends an alarm message, and S10 is executed at the same time;

[0046] S10, judge T m >15, if not, the instrument will continue to send out alarm information, if yes, return to execute S6.

[0047] Further, S2 the instrument reads the wake-up times N and the wake-up cycle T set by the user. s , also includes: when the user does not set the wake-up times N and the wake-up cycle T s When the default value is executed, the default value of the wake-up times N is 24, and the wake-up cycle T s The default value is 30 minutes.

[0048] Furthermore, the instrument reads the wake-up times N and the wake-up cycle T set by the user in S2. s , the setting range is: N = [0,100], T s =[0,1440].

[0049] Furthermore, S4 enters the wake-up interrupt enable state, and the key door closing cycle supports self-wake-up.

[0050] Furthermore, in S5, the state of enabling and disabling wake-up is entered, and the key door closing cycle does not support self-wake-up.

[0051] Furthermore, the alarm information sent out by the instrument includes: display text alarm, indicator light alarm, buzzer alarm and theft alarm sent to the user.

[0052] In the present invention, a method for monitoring vehicle fuel theft is proposed, which is used to monitor the remaining fuel percentage L collected by the vehicle instrument after the key door is closed, monitor the fuel situation, and send corresponding theft data and alarm prompts. According to the personalized needs of users, the fuel theft detection function can be turned on and off at any time through the instrument and terminal equipment. After turning on, it includes a wake-up period T s , wake-up times N and other parameter settings.

[0053] After the vehicle is powered off, the key door is closed, and the instrument collects the current fuel percentage and records it as L0 (the first sample value after closing the key door is used as a reference value), and enters the sleep state according to the actual situation of the vehicle. s After that, the meter detects the remaining fuel percentage L1 after self-awakening, and determines whether L0>L1 and (L0-L1)>5% are established. If the inequality condition is established, it is determined that the fuel is stolen, and the meter prompts an alarm (buzzer / text / indicator light), and sends the stolen data to the network device for easy identification by the background and terminal equipment. After 15s, the meter enters sleep mode; if the inequality condition is not established, the meter directly enters sleep mode. Periodic self-wake-up detection and judgment, the reference value of the remaining fuel percentage each time is L0. After N times, no more monitoring will be performed during the key door closing cycle. The purpose of fuel monitoring with controllable cycle and power consumption is achieved.

[0054] like Figure 2 As shown in the figure, the parameter setting process is: open the key door, enter the "Fuel Monitoring Settings" menu item step by step through the instrument menu, set the wake-up cycle (0 to 1440 minutes), set the number of wake-up times (0 to 100 times), and after the setting is completed, the two parameters are stored in the EEPROM; the wake-up cycle and the number of wake-up times can also be set by the terminal device through data communication, and the verification code can be added. The instrument will store the valid data after receiving it and the verification is passed, otherwise it will be regarded as a setting failure.

[0055] like Figure 1 As shown in the figure, the principle of judging whether the fuel theft function is turned on or off is as follows: close the key door, the instrument performs fuel sampling, wake-up interrupt, sleep mode, and timer function initialization, and defines the number of times the instrument is woken up variable i, with an initial value of 0. Collect the remaining fuel percentage once, defined as L0, as a reference value for judging the fuel change after each wake-up of the instrument. Read the wake-up times N and wake-up cycle T set by the user s If the user does not set, the instrument defaults to N as 24, T s Determine whether the inequality N>i is true. If not, disable the interrupt and timing counting functions, and the instrument directly enters the sleep mode. This key door closing cycle does not support self-wake-up; if it is true, enable the wake-up interrupt and timing counting, and initialize the counter variables T and T m When it is 0, the instrument goes into sleep mode and supports the self-wake-up function.

[0056] Fuel monitoring process: After confirming the fuel monitoring function, the timer function is turned on, T starts counting, and it is judged that T≥T s Is the inequality true? If not, the instrument is always in sleep mode; if true, an interrupt is triggered and the instrument is awakened. At this time, i=i+1 is executed once; T m Start counting. Collect the remaining oil percentage L again i . Judge L i <L0 and (L0-L i )>5%Whether the two inequalities are true at the same time, if not, the meter directly enters the sleep mode; if true, the meter prompts an alarm (text / indicator light / buzzer) and sends the stolen data at the same time. m >15Whether the inequality is established, if not, the meter will continue to alarm and send out stolen data; if established, it will enter sleep mode and complete an alarm cycle. Then the above process will be executed repeatedly.

[0057] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A method for monitoring vehicle fuel theft, characterized in that it include: S1, close the key door, set the counter i=0, and the instrument collects the initial oil volume percentage L0; S2. The instrument reads the wake-up times N and wake-up cycle T set by the user s ; S3, the instrument determines whether N>i is established, if yes, execute S4, otherwise execute S5; S4, enter the wake-up interrupt enable state, the timer starts counting, and the timer count variables T = 0 and T m =0, then execute S6; S5, enter the enable wake-up disable state, and then execute S6; S6, the instrument enters the sleep mode, and the count variable of the timer T=T+1; S7, determine the current T ≥ T s Is it true? If not, return to execute S6. If yes, execute S8. S8, the instrument enters the wake-up mode, counter i=i+1, counting variable T m =T m +1, the instrument collects the current oil volume percentage L i ; S9, judge L i <L0 and (L0-L i )>5% are both true, if not, then return to S6, if both are true, then it is determined that there is fuel theft, the meter sends an alarm message, and S10 is executed at the same time; S10, judge T m >15, if not, the instrument will continue to send out alarm information, if yes, return to execute S6.

2. A vehicle fuel theft monitoring method according to claim 1, characterized in that: S2 The instrument reads the wake-up times N and the wake-up cycle T set by the user s , also includes: When the user does not set the wake-up times N and the wake-up cycle T s When , the default value is executed; The default value of wake-up times N is 24; Wake-up period T s The default value is 30 minutes.

3. A vehicle fuel theft monitoring method according to claim 1, characterized in that: S2 The instrument reads the wake-up times N and the wake-up cycle T set by the user s , the setting range is: N＝[0,100]； T s ＝[0,1440]。 4. A vehicle fuel theft monitoring method according to claim 1, characterized in that: S4 enters the wake-up interrupt enable state, and the key door closing cycle supports self-wake-up.

5. The method for monitoring vehicle fuel theft according to claim 1, characterized in that: S5 enters the enable wake-up prohibition state, and the key door closing cycle does not support self-wake-up.

6. A vehicle fuel theft monitoring method according to claim 1, characterized in that: The alarm information sent by the instrument includes: display text alarm, indicator light alarm, buzzer alarm and theft alarm sent to the user.

Images