CN109835176A - Motor vehicle oil tank anti-theft oil system and alarm control method - Google Patents
Motor vehicle oil tank anti-theft oil system and alarm control method Download PDFInfo
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- CN109835176A CN109835176A CN201910186706.4A CN201910186706A CN109835176A CN 109835176 A CN109835176 A CN 109835176A CN 201910186706 A CN201910186706 A CN 201910186706A CN 109835176 A CN109835176 A CN 109835176A
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Abstract
The invention discloses a kind of motor vehicle oil tank anti-theft oil system, including fuel tank and electric control gear, electric control gear is connected with display screen, and fuel tank is equipped with oil filler, and oil filler is connected with downwards oil filling pipe, and oil filling pipe protrudes into fuel tank and the bottom end of oil filling pipe is equipped with check valve；Flase floor is equipped with push switch, and electric control gear is connected with the first combined aural and visual alarm and the second combined aural and visual alarm.The invention also discloses the alarm control methods of above-mentioned motor vehicle oil tank anti-theft oil system.It is flat that the present invention can prevent fuel tank from being taken out under the action of negative pressure, effectively oil pick-up tube is stopped to be inserted into fuel tank, more efficiently prevents from oily phenomenon steathily, can either effectively prevent false alarm when occurring to steal oily phenomenon and alarm.
Description
Technical field
The present invention relates to motor vehicle oil-stealing technical fields.
Background technique
With the continuous growth and the continuous growth of amount of highway transportation of car ownership, need of the motor vehicle to fuel oil
The amount of asking increasingly increases, and fuel price is constantly soaring, and more and more criminals have aimed at the fuel oil in motor vehicle.Bulk transport
The volume of fuel tank of vehicle is big, and oil reserve is more, and bulk transport vehicle fuel oil is stolen event and frequently occurs in recent years.
Oil person is pumped using negative pressure steathily, and (more than ten seconds) can exhaust FCL oil (if it is steathily in a short period of time
Oil in oil tank then takes longer), crime time is short, and driver is impossible to guard against；To accelerate speed of committing a crime, oil person is often used by force steathily
Big negative pressure takes out fuel tank under powerful suction function flat.For oil-stealing, there are some anti-theft oil tech, such as
Using infrared detection device, personnel are detected with close to rear automatic alarm；The automatic alarm when fuel tank fuel quantity improper reduction；If
Vibrating sensor is set, the automatic alarm when detecting vibration.Existing anti-theft oil tech is not accurate enough, can trigger wrong report often
It is alert；When oil shaking in fuel tank occurs due to jolting for such as motor vehicle, it will detect the improper reduction of oil mass and touch
Hair alarm；For another example not steal oil person it is close when (when such as traffic police, traffic congestion passing pedestrian or driver or even when animal) be also easy to
Trigger infrared false alarm；For another example jolting, occurring due to loud noise (as thundered) when resonance, sliding after engine misses
Vibration is also easy to triggering vibration false alarm.The oily mode of stealing of oil person's most convenient is that pipe oil pumping is protruded into from oil filler steathily, existing
Anti-theft oil tech can only also alarm and this steal oily mode without can effectively prevent.Sometimes stealing oil person can punch on fuel tank and steal
Oil can be avoided being mounted on the warning device at oil filler at this time, will not trigger alarm when stealing oil in this way.
In short, existing anti-theft oil system and alarm control method, on the one hand can there is a phenomenon where it is oily steathily when do not alarm, separately
It on the one hand can be there is a phenomenon where false alarms when oily event steathily.
Summary of the invention
The purpose of the present invention is to provide the motor vehicle oil tank anti-thefts that one kind can effectively prevent the fuel oil in fuel tank stolen
Oil system.
To achieve the above object, motor vehicle oil tank anti-theft oil system of the invention includes the fuel tank and automatically controlled dress of motor vehicle
It sets, electric control gear is connected with display screen, and electric control gear and display screen are installed in driver's cabin, and electric control gear connects vehicle power supply；
Fuel tank is equipped with oil filler, and oil filler outer end is equipped with end cap；
Oil filler is connected with downwards the oil filling pipe for protruding into refueling nozzle, and support frame is equipped in fuel tank, and support frame and oil tank wall are solid
It connects calmly and support frame is arranged around oil filling pipe；
Oil filling pipe protrudes into fuel tank and the bottom end of oil filling pipe is equipped with check valve；Check valve includes the valve plate for closing oil filling pipe, valve
Hingedly on the support frame, the valve plate other end is free end for plate one end；Flase floor is equipped with below valve plate, flase floor is connected with support frame
It connects；Flase floor is equipped with reset spring upwards, and reset spring upper end is connected with valve plate lower surface；It is multiple when being atmospheric pressure at oil filler
Valve plate is pressed against the bottom end of oil filling pipe to close oil filling pipe by position spring；Oil pressure when oil gun refuels is inserted at oil filler to pass through
Valve plate compression reseting spring is rotated down valve plate, to open oil filling pipe；
Flase floor is equipped with push switch, and valve plate presses the push switch when being rotated down unlatching；Push switch passes through route
It is connected with electric control gear, the route between push switch and electric control gear is equipped with the manual switch for preventing false alarm,
Manual switch is located in driver's cabin；
Electric control gear is connected with the first combined aural and visual alarm and the second combined aural and visual alarm；First combined aural and visual alarm is located in driver's cabin,
Second combined aural and visual alarm, which is set to, to be driven on chamber outer wall.
The inner wall of oil tank is connected with several horizontally disposed cross reinforcing plates and several vertically arranged longitudinally reinforced
Gusset, each cross reinforcing plate are uniformly distributed along inner wall of oil tank, and each longitudinally reinforced gusset is uniformly distributed along inner wall of oil tank；It is longitudinal to add
Strengthening tendons plate and cross reinforcing plate are used to prevent negative pressure from damaging fuel tank.
Fuel tank sidewall is fixedly connected with the measuring cylinder that both ends are all closed, measuring cylinder bottom and tank bottoms and passes through the logical of rigidity
Oil pipe is connected；The area of the horizontal cross-section of measuring cylinder is s1 square centimeters, and the area of the horizontal cross-section of fuel tank is s2 squares li
Rice, s1/s2 < 1/100；
Capacitance level transducer is equipped in measuring cylinder, measuring cylinder top is equipped with stomata, is equipped with strainer or air mistake at stomata
Filter；The top of capacitance level transducer stretches out measuring cylinder and upwards by connection electric control gear.
It further include the wheel for having vibrating sensor on the engine housing for being mounted on motor vehicle and being mounted on motor vehicle
The wheel speed sensors at place；Vibrating sensor and wheel speed sensors pass through connection electric control gear respectively.
The electric control gear is connected with wireless communication module, wireless communication module be 2G module or 3G module or 4G module or
5G module；Preset warning message and the phone number for receiving warning message are stored in electric control gear.
It is automatically controlled the object of the invention is also to provide a kind of alarm control method of above-mentioned motor vehicle oil tank anti-theft oil system
Device persistently receives the signal of wheel speed sensors, push switch, vibrating sensor and capacitance level transducer；It is normal to refuel
When, driver disconnects manual switch, and driver opens manual switch after oiling；
Condition one: it is per second that wheel speed sensors detect that the revolving speed of wheel is greater than 1 circle；
Condition two: push switch is connected；
Condition three: the decrease speed of the liquid level in fuel tank is greater than 10 millimeters per minute；
Condition four: the liquid level in fuel tank is increased speed greater than 200 millimeters per minute；
Condition five: when the vibration frequency that vibrating sensor detects is greater than 50Hz；
Condition six: the liquid level in fuel tank is alternately present raising and lowering phenomenon in 30 seconds；
Condition seven: electric control gear can't detect the signal of vibrating sensor or can't detect the signal of capacitance level transducer；
Condition one is true or condition five is true composition negative alert if；
Condition two is true or condition three is true or condition four is true or condition six is true or condition seven is true composition triggering alarm bar
Part；
When negative alert if is true, electric control gear keeps the first combined aural and visual alarm and the second combined aural and visual alarm to be in and closes shape
State；When negative alert if is false and triggering alert if is true, electric control gear opens the first combined aural and visual alarm and the second acousto-optic
Alarm issues sound and light alarm signal.
The electric control gear signal per second at least acquiring a capacitance level transducer, and this week was calculated with 5 seconds for the period
Average level in phase is milli using the average level in a cycle as the unit of the current level D, D of fuel tank in the period
Rice；
The sequence of nearest 6 current levels temporally from front to back is respectively D1, D2, D3, D4, D5 and D6, and D6 is the last time
Current level；At 10 millimeters of D6-D1 <, condition three is true；At 200 millimeters of D6-D1 >, condition four is true；D6-D1, D5-
In this 5 values of D1, D4-D1, D3-D1, D2-D1, if the quantity of positive number and negative is both greater than 2, condition six is true.
When negative alert if is false and triggering alert if is true, electric control gear is by wireless communication module with short message
Form preset warning message is issued to the phone number for receiving warning message.
The present invention has the advantage that:
The present invention can more efficiently prevent from oily phenomenon steathily, can either effectively prevent when occurring to steal oily phenomenon and alarm
False alarm.
Cross reinforcing plate and longitudinally reinforced gusset constitute fuel tank skeleton, pump when stealing oil person in fuel tank sidewall drilling
When, it can prevent fuel tank from being taken out under the action of negative pressure flat, prevent fuel tank from deforming, also be formed in fuel tank when oil person pumps steathily negative
Pressure, as long as fuel tank is not flat by pumping, the oil in fuel tank is difficult to continuously be extracted out, so that most of fuel oil in fuel tank will not be taken out
It steals out, reduces the stolen loss of fuel oil.
Check valve and flase floor prevent direct cannulation to steal the possibility of oil, have damaged unidirectionally even if stealing oil person and using force
Valve, oil pick-up tube can also be lived by flase floor shelves and can not be pumped.Flase floor not only allowed fuel oil to pass through, but also had higher-strength,
It is difficult to stolen oil person's damage.
The sectional area of measuring cylinder is much smaller than the sectional area of fuel tank, thus the liquid when motor vehicle shakes, in measuring cylinder
The amplitude of face variation is much smaller than the amplitude of variation of liquid level in fuel tank, so that the level value of capacitance level transducer measurement is more quasi-
Really, the phenomenon that reducing liquid level change triggers false alarm.Rigidity oil pipe can quickly be cut off to avoid soft connection oil circuit or
Obstruction influences liquid level in level gauging cylinder and changes, and then influences Normal Alarm；Plug type liquid level measuring cylinder is according to law of connected vessels
Design, neither influences normal level gauging, and fuel tank liquid level caused by can also reducing because of vehicle to run shakes possible mistake
Alarm, to improve the accuracy of measurement, stability and robustness；
Electric control gear calculated the average level in the period with 5 seconds for the period, using the average level in a cycle as this week
The current level D of fuel tank in phase, this calculation can eliminate shaking factor and give measurement liquid level bring error, avoid reporting by mistake
It is alert.Because Uneven road will lead to the shakiness of the liquid level in fuel tank and measuring cylinder when being slided such as engine misses, motor vehicle, may touch
Send out false alarm.5 seconds time allowed the liquid level in measuring cylinder to shake back and forth repeatedly, thus the average level that period measures can
Substantially accurately reflect the oil mass in fuel tank.
It is approximately 1.3 millimeters per minute that the normal oil consumption rate of large-sized truck, which is converted to liquid level fall off rate, and oily rate is very high steathily,
Tend to make liquid level decrease speed reach 100 millimeters per minute more than；Therefore, the setting of condition three can either exclude motor vehicle
Normal oil consumption and liquid level decline caused by expanding with heat and contract with cold, and the not situation of trigger condition three when can be avoided oily steathily.
The setting of condition three, condition four and condition six, oil person can also pass through liquid level when oil is stolen in punching on fuel tank steathily
Irregular change and trigger alarm, notify in time driver and by sound-light alarm fright steal oil person.
In order to further increase the stability and robustness of system, avoid false alarm, system increase vibrating sensor and
Wheel speed sensors.When the vibration frequency that vibrating sensor detects is greater than 50Hz, indicate that engine is in the open state, at this time vehicle
In driving status or the state that starts at any time, oil can face very big security risk and be sent out oil person steathily at this time steathily
Existing risk, therefore fuel oil when engine is in the open state in fuel tank will not be stolen, and need not be sounded an alarm at this time, to keep away
Exempt from false alarm phenomenon.The setting of condition five issues false alarm when can prevent engine from opening.
It is per second that the revolving speed of wheel is greater than 1 circle, shows vehicle in traveling, even if engine misses, but it is same to steal oil at this time
The risk that sample faces very big security risk and is found, thus steal at this time oil person will not go to travel steathily in vehicle
Fuel oil in fuel tank.The setting of condition one can prevent from issuing false alarm when vehicle driving.
The setting of condition seven can guarantee in vibrating sensor or detect the stolen oil person of route of capacitance level transducer
When cutting, it still is able to triggering alarm.
The all data that display screen can detect electric control gear is shown, is monitored convenient for driver.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the present invention at fuel tank；
Fig. 2 is the enlarged drawing in Fig. 1 at A；
Fig. 3 is the enlarged drawing in Fig. 1 at B；
Fig. 4 is electric control principle schematic diagram of the invention.
Specific embodiment
As shown in Figures 1 to 4, motor vehicle oil tank anti-theft oil system of the invention includes the fuel tank 1 and automatically controlled dress of motor vehicle
2 are set, electric control gear 2 is connected with display screen 3, and electric control gear 2 and display screen 3 are installed in driver's cabin, and electric control gear 2 connects vehicle-mounted
Power supply 4(such as battery)；Fuel tank 1 is equipped with oil filler 5, and 5 outer end of oil filler (i.e. upper end) is equipped with end cap 6；
Oil filler 5 is connected with downwards the oil filling pipe 7 for protruding into refueling nozzle, is equipped with support frame 8, support frame 8 and fuel tank in fuel tank 1
1 wall is fixedly connected and support frame 8 is arranged around oil filling pipe 7；
Oil filling pipe 7 protrudes into fuel tank 1 and the bottom end of oil filling pipe 7 is equipped with check valve；Check valve includes the valve plate for closing oil filling pipe 7
9,9 one end of valve plate is hinged on support frame 8, and 9 other end of valve plate is free end；Flase floor 10, flase floor 10 are equipped with below valve plate 9
It is connected with support frame 8；Flase floor 10 is equipped with reset spring 11 upwards, and 11 upper end of reset spring is connected with 9 lower surface of valve plate；
Valve plate 9 is pressed against the bottom end of oil filling pipe 7 to close oil filling pipe 7 by reset spring 11 when being atmospheric pressure at oil filler 5；It refuels
Oil pressure is rotated down valve plate 9 by 9 compression reseting spring 11 of valve plate when insertion oil gun refuels at mouth 5, to open oil filling pipe
7；
Flase floor 10 is equipped with push switch 25, and valve plate 9 presses the push switch 25 when being rotated down unlatching；Push switch 25
It is connected by route with electric control gear 2, the route between push switch 25 and electric control gear 2 is equipped with for preventing false alarm
Manual switch 12, manual switch 12 is located in driver's cabin；
Electric control gear 2 is connected with the first combined aural and visual alarm 13 and the second combined aural and visual alarm 14；First combined aural and visual alarm 13, which is located at, to be driven
Interior is sailed, the second combined aural and visual alarm 14, which is set to, to be driven on chamber outer wall.
1 inner wall of fuel tank is connected with several horizontally disposed cross reinforcing plates 15 and several vertically arranged longitudinal directions add
Strengthening tendons plate 16, each cross reinforcing plate 15 are uniformly distributed along 1 inner wall of fuel tank, and each longitudinally reinforced gusset 16 is uniform along 1 inner wall of fuel tank
Distribution；Longitudinally reinforced gusset 16 and cross reinforcing plate 15 are used to prevent negative pressure from damaging fuel tank 1.
1 side wall of fuel tank is fixedly connected with the measuring cylinder 17 that both ends are all closed, 17 bottom of measuring cylinder and 1 bottom of fuel tank and passes through just
The oil pipe 18(such as steel pipe of property) it is connected；The area of the horizontal cross-section of measuring cylinder 17 is s1 square centimeters, and the level of fuel tank 1 is cut
The area in face is s2 square centimeters, s1/s2 < 1/100；
Capacitance level transducer 19 is equipped in measuring cylinder 17,17 top of measuring cylinder is equipped with stomata 20, was equipped at stomata 20
Device 21 is filtered, filter device 21 is strainer or air filter；Measuring cylinder is stretched out on the top of capacitance level transducer 19 upwards
17 and pass through connection electric control gear 2.The effect of stomata 20 is communicated with atmosphere, the oil level in fuel tank 1 and measuring cylinder 17
When raising, the air in measuring cylinder 17 is discharged into atmosphere by stomata 20；When the oil level is lowered, air enters measuring cylinder 17 by atmosphere.
The sectional area of s1/s2 < 1/100, measuring cylinder 17 are much smaller than the sectional area of fuel tank 1, thus shake in motor vehicle
When, the amplitude of the fluid change in measuring cylinder 17 much smaller than liquid level in fuel tank 1 amplitude of variation so that capacitance level transducer
The phenomenon that level value of 19 measurements is more accurate, reduces liquid level change triggers false alarm.
It further include the vehicle for having vibrating sensor 22 on the engine housing for being mounted on motor vehicle and being mounted on motor vehicle
Wheel speed sensors 23 at wheel；Vibrating sensor 22 and wheel speed sensors 23 pass through connection electric control gear 2 respectively.
The electric control gear 2 is connected with wireless communication module 24, and wireless communication module 24 is 2G module or 3G module or 4G
Module or 5G module；Preset warning message and the phone number for receiving warning message are stored in electric control gear 2.
Wherein, electric control gear 2 can use single-chip microcontroller or PLC, such as 52 single-chip microcontrollers.
When normal oiling, end cap 6 is opened, refueling nozzle is protruded into oil filler 5；Refueling nozzle is protruding into one end of oil filler 5 just
Normal refueling position is located at 9 top of valve plate, and valve plate 9 is rotated down unlatching under the action of oil pressure.
The invention also discloses the alarm control methods of above-mentioned motor vehicle oil tank anti-theft oil system:
Electric control gear 2 persistently receives wheel speed sensors 23, push switch 25, vibrating sensor 22 and capacitance level transducer 19
Signal；When normal oiling, driver disconnects manual switch 12, and driver opens manual switch 12 after oiling；
Condition one: it is per second that wheel speed sensors 23 detect that the revolving speed of wheel is greater than 1 circle；
Condition two: push switch 25 is connected；
Condition three: the decrease speed of the liquid level in fuel tank 1 is greater than 10 millimeters per minute；
Condition four: the liquid level in fuel tank 1 is increased speed greater than 200 millimeters per minute；
Condition five: when the vibration frequency that vibrating sensor 22 detects is greater than 50Hz；
Condition six: the liquid level in fuel tank 1 is alternately present raising and lowering phenomenon in 30 seconds；
Condition seven: electric control gear 2 can't detect the signal of vibrating sensor 22 or can't detect capacitance level transducer 19
Signal；
Condition one is true or condition five is true composition negative alert if；
Condition two is true or condition three is true or condition four is true or condition six is true or condition seven is true composition triggering alarm bar
Part；
When negative alert if is true (i.e. condition one is true or condition five is true), electric control gear 2 keeps the first combined aural and visual alarm
13 and second combined aural and visual alarm 14 be in close state；When negative alert if is false and triggering alert if is true, automatically controlled dress
2 opening the first combined aural and visual alarms 13 and the second combined aural and visual alarm 14 are set, sound and light alarm signal is issued.Triggering alert if is very i.e.
Condition two is true or condition three is true or condition four is true or condition six is true or condition seven is true.
It is approximately 1.3 millimeters per minute that the normal oil consumption rate of large-sized truck, which is converted to liquid level fall off rate, and oily rate is very high steathily,
Tend to make liquid level decrease speed reach 100 millimeters per minute more than；Therefore, the setting of condition three can either exclude motor vehicle
Normal oil consumption and liquid level decline caused by expanding with heat and contract with cold, and the not situation of trigger condition three when can be avoided oily steathily.
The connection of push switch 25 shows that check valve is opened.If being normally to refuel at this time, manual switch 12 is by driver
It closes, thus electric control gear 2 will not receive the signal of the connection of push switch 25, will not trigger alarm.If being oily steathily at this time
Person is stealing oil, then electric control gear 2 can trigger alarm because negative alert if is false and triggering alert if is true.
The setting of condition three, condition four and condition six can also pass through the improper of liquid level when stealing oil person's punching oil steathily
Change and trigger alarm, notify driver in time and oil person is stolen by sound-light alarm fright.
When the vibration frequency that vibrating sensor 22 detects is greater than 50Hz, indicate that engine is in the open state, at this time vehicle
In driving status or the state that starts at any time, oil can face very big security risk and be sent out oil person steathily at this time steathily
Existing risk, therefore fuel oil when engine is in the open state in fuel tank 1 will not be stolen, and need not be sounded an alarm at this time, thus
Avoid false alarm phenomenon.The setting of condition five issues false alarm when can prevent engine from opening.
It is per second that the revolving speed of wheel is greater than 1 circle, shows vehicle in traveling, even if engine misses, but it is same to steal oil at this time
The risk that sample faces very big security risk and is found, thus steal at this time oil person will not go to travel steathily in vehicle
Fuel oil in fuel tank 1.The setting of condition one can prevent from issuing false alarm when vehicle driving.
The setting of condition seven can guarantee stolen in the route of vibrating sensor 22 or detection capacitance level transducer 19
When oily person cuts off, it still is able to triggering alarm.
The signal per second at least acquiring a capacitance level transducer 19 of electric control gear 2, and being calculated with 5 seconds for the period should
Average level in period is using the average level in a cycle as the unit of the current level D, D of fuel tank 1 in the period
Millimeter；
The sequence of nearest 6 current levels temporally from front to back is respectively D1, D2, D3, D4, D5 and D6, and D6 is the last time
Current level；At 10 millimeters of D6-D1 <, condition three is true；At 200 millimeters of D6-D1 >, condition four is true；D6-D1, D5-
In this 5 values of D1, D4-D1, D3-D1, D2-D1, if the quantity of positive number and negative is both greater than 2 and positive number and negative are handed over
For appearance, then condition six is true.
Electric control gear 2 calculated the average level in the period with 5 seconds for the period, using the average level in a cycle as
The current level D of fuel tank 1 in the period, this calculation can eliminate shaking factor and give measurement liquid level bring error, keep away
Exempt from false alarm.Because Uneven road will lead to the liquid level in fuel tank 1 and measuring cylinder 17 not when being slided such as engine misses, motor vehicle
Surely, false alarm may be triggered.5 seconds time allowed the liquid level in measuring cylinder 17 to shake back and forth repeatedly, thus period measures
Average level can substantially accurately reflect the oil mass in fuel tank 1.
When negative alert if is false and triggering alert if is true, electric control gear 2 is by wireless communication module 24 with short
The form of information issues preset warning message to the phone number for receiving warning message.Related personnel such as driver receives
After warning message, it can take action and stop loss in time.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (8)
1. motor vehicle oil tank anti-theft oil system, fuel tank and electric control gear including motor vehicle, electric control gear are connected with display screen, electricity
Control device and display screen are installed in driver's cabin, and electric control gear connects vehicle power supply；Fuel tank is equipped with oil filler, and oil filler outer end is set
There is end cap；It is characterized by:
Oil filler is connected with downwards the oil filling pipe for protruding into refueling nozzle, and support frame is equipped in fuel tank, and support frame and oil tank wall are solid
It connects calmly and support frame is arranged around oil filling pipe；
Oil filling pipe protrudes into fuel tank and the bottom end of oil filling pipe is equipped with check valve；Check valve includes the valve plate for closing oil filling pipe, valve
Hingedly on the support frame, the valve plate other end is free end for plate one end；Flase floor is equipped with below valve plate, flase floor is connected with support frame
It connects；Flase floor is equipped with reset spring upwards, and reset spring upper end is connected with valve plate lower surface；It is multiple when being atmospheric pressure at oil filler
Valve plate is pressed against the bottom end of oil filling pipe to close oil filling pipe by position spring；Oil pressure when oil gun refuels is inserted at oil filler to pass through
Valve plate compression reseting spring is rotated down valve plate, to open oil filling pipe；
Flase floor is equipped with push switch, and valve plate presses the push switch when being rotated down unlatching；Push switch passes through route
It is connected with electric control gear, the route between push switch and electric control gear is equipped with the manual switch for preventing false alarm,
Manual switch is located in driver's cabin；
Electric control gear is connected with the first combined aural and visual alarm and the second combined aural and visual alarm；First combined aural and visual alarm is located in driver's cabin,
Second combined aural and visual alarm, which is set to, to be driven on chamber outer wall.
2. motor vehicle oil tank anti-theft oil system according to claim 1, it is characterised in that: if the inner wall of oil tank is connected with
Horizontally disposed cross reinforcing plate and several vertically arranged longitudinally reinforced gussets are done, each cross reinforcing plate is along inner wall of oil tank
It is uniformly distributed, each longitudinally reinforced gusset is uniformly distributed along inner wall of oil tank；Longitudinally reinforced gusset and cross reinforcing plate are used to prevent
Only negative pressure damages fuel tank.
3. motor vehicle oil tank anti-theft oil system according to claim 1, it is characterised in that: fuel tank sidewall is fixedly connected with two
The measuring cylinder being all closed is held, measuring cylinder bottom is connected with tank bottoms by the oil pipe of rigidity；The horizontal cross-section of measuring cylinder
Area be s1 square centimeter, the area of the horizontal cross-section of fuel tank is s2 square centimeters, s1/s2 < 1/100；
Capacitance level transducer is equipped in measuring cylinder, measuring cylinder top is equipped with stomata, is equipped with strainer or air mistake at stomata
Filter；The top of capacitance level transducer stretches out measuring cylinder and upwards by connection electric control gear.
4. motor vehicle oil tank anti-theft oil system according to claim 3, it is characterised in that: further include being mounted on motor vehicle
Engine housing on vibrating sensor and the wheel speed sensors that are mounted at the wheel of motor vehicle；Vibrating sensor and wheel
Fast sensor passes through connection electric control gear respectively.
5. motor vehicle oil tank anti-theft oil system according to claim 4, it is characterised in that: the electric control gear is connected with nothing
Line communication module, wireless communication module are 2G module or 3G module or 4G module or 5G module；It is stored in electric control gear preset
Warning message and phone number for receiving warning message.
6. the alarm control method of the oil system of motor vehicle oil tank anti-theft described in claim 5, it is characterised in that:
Electric control gear persistently receives the signal of wheel speed sensors, push switch, vibrating sensor and capacitance level transducer；Just
When often refueling, driver disconnects manual switch, and driver opens manual switch after oiling；
Condition one: it is per second that wheel speed sensors detect that the revolving speed of wheel is greater than 1 circle；
Condition two: push switch is connected；
Condition three: the decrease speed of the liquid level in fuel tank is greater than 10 millimeters per minute；
Condition four: the liquid level in fuel tank is increased speed greater than 200 millimeters per minute；
Condition five: when the vibration frequency that vibrating sensor detects is greater than 50Hz；
Condition six: the liquid level in fuel tank is alternately present raising and lowering phenomenon in 30 seconds；
Condition seven: electric control gear can't detect the signal of vibrating sensor or can't detect the signal of capacitance level transducer；
Condition one is true or condition five is true composition negative alert if；
Condition two is true or condition three is true or condition four is true or condition six is true or condition seven is true composition triggering alarm bar
Part；
When negative alert if is true, electric control gear keeps the first combined aural and visual alarm and the second combined aural and visual alarm to be in and closes shape
State；When negative alert if is false and triggering alert if is true, electric control gear opens the first combined aural and visual alarm and the second acousto-optic
Alarm issues sound and light alarm signal.
7. alarm control method according to claim 6, it is characterised in that:
The electric control gear signal per second at least acquiring a capacitance level transducer, and calculated in the period with 5 seconds for the period
Average level, using the average level in a cycle as the unit of the current level D, D of fuel tank in the period be millimeter；
The sequence of nearest 6 current levels temporally from front to back is respectively D1, D2, D3, D4, D5 and D6, and D6 is the last time
Current level；At 10 millimeters of D6-D1 <, condition three is true；At 200 millimeters of D6-D1 >, condition four is true；D6-D1, D5-
In this 5 values of D1, D4-D1, D3-D1, D2-D1, if the quantity of positive number and negative is both greater than 2, condition six is true.
8. alarm control method according to claim 6, it is characterised in that: negative alert if is false and triggering alarm bar
When part is true, electric control gear is sent out in the form of short message to the phone number for receiving warning message wireless communication module
Preset warning message out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186706.4A CN109835176B (en) | 2019-03-13 | 2019-03-13 | Oil stealing prevention system for motor vehicle oil tank and alarm control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN110723104A (en) * | 2019-09-10 | 2020-01-24 | 成都亿盟恒信科技有限公司 | Vehicle-mounted terminal's theftproof oil detecting system |
| CN111775692A (en) * | 2020-07-24 | 2020-10-16 | 安达市雄励电气信号设备装置制造有限公司 | Oil stealing prevention structure for oil tank |
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