阅读说明：本技术 滤油防盗油箱加油口 (Oil filter anti-theft oil tank oil filler ) 是由 时欢欢 于 2020-05-28 设计创作，主要内容包括：本发明公开了滤油防盗油箱加油口,包括油箱,所述油箱的上表面开设有加油口,且该加油口的内壁固定连接有加油管道,所述加油管道的进油口内壁转动连接有密封盖,所述加油管道的内壁开设有滑槽,且该滑槽的内壁滑动连接有卡紧环,所述卡紧环的下表面固定连接有L型卡紧杆,所述L型卡紧杆的下表面固定连接有防盗保护套,所述防盗保护套的内侧壁与加油管道的内侧壁均开设有若干个相适配的进油通孔。该滤油防盗油箱加油口,通过设置密封盖与防盗保护套,能防止油箱内部的油挥发,通过设置卡紧环、L型卡紧杆、防盗保护套与卡紧弹簧,能使油箱加油口具有防盗的效果,从而使整个油箱加油口具有防盗的效果。(The invention discloses an oil filter anti-theft oil tank filler opening, which comprises an oil tank, wherein an oil filler opening is formed in the upper surface of the oil tank, an oil feeding pipeline is fixedly connected to the inner wall of the oil filler opening, a sealing cover is rotatably connected to the inner wall of an oil inlet of the oil feeding pipeline, a sliding groove is formed in the inner wall of the oil feeding pipeline, a clamping ring is slidably connected to the inner wall of the sliding groove, an L-shaped clamping rod is fixedly connected to the lower surface of the clamping ring, an anti-theft protective sleeve is fixedly connected to the lower surface of the L-shaped clamping rod, and a plurality of oil inlet through holes matched with each other are formed in the inner side wall of the anti. The oil filter anti-theft oil tank oil filler hole can prevent oil inside an oil tank from volatilizing by arranging the sealing cover and the anti-theft protective sleeve, and can enable the oil tank oil filler hole to have an anti-theft effect by arranging the clamping ring, the L-shaped clamping rod, the anti-theft protective sleeve and the clamping spring, so that the whole oil tank oil filler hole has an anti-theft effect.)

1. Oil strain theftproof oil tank oil filler hole, including oil tank (1), its characterized in that: the oil tank is characterized in that an oil filling port is formed in the upper surface of the oil tank (1), an oil filling pipeline (2) is fixedly connected to the inner wall of the oil filling port, a sealing cover (3) is rotatably connected to the inner wall of the oil filling pipeline (2), a sliding groove is formed in the inner wall of the oil filling pipeline (2), a clamping ring (4) is slidably connected to the inner wall of the sliding groove, an L-shaped clamping rod (5) is fixedly connected to the lower surface of the clamping ring (4), an anti-theft protection sleeve (6) is fixedly connected to the lower surface of the L-shaped clamping rod (5), a plurality of oil inlet through holes (7) matched with each other are formed in the inner side wall of the anti-theft protection sleeve (6) and the inner side wall of the oil filling pipeline (2), a fixing ring (8) is fixedly connected to the inner ring surface of the clamping ring (4), a filter screen (9) is lapped on the upper surface of, and the inner wall of the thread groove is connected with a nut ring (10) for fixing the filter screen (9) in a threaded manner.

2. The oil filter anti-theft oil tank filler opening according to claim 1, characterized in that: the upper surface of the sealing cover (3) is fixedly connected with a knob (11) which is convenient for the sealing cover (3) to rotate, and the sealing cover (3) and the knob (11) are made of copper.

3. The oil filter anti-theft oil tank filler opening according to claim 1, characterized in that: the quantity of L type chucking pole (5) is four, four L type chucking pole (5) circumference equidistance sets up the lower surface at chucking ring (4).

4. The oil filter anti-theft oil tank filler opening according to claim 1, characterized in that: the oil feeding pipeline (2) is internally provided with a clamping groove matched with the L-shaped clamping rod (5), and the outer surface of the L-shaped clamping rod (5) is sleeved with a clamping spring (12).

5. The oil filter anti-theft oil tank filler opening according to claim 1, characterized in that: the oil inlet through holes (7) are equally divided into two groups, namely a plurality of oil inlet through holes (7) which are respectively arranged on the inner side wall of the anti-theft protective sleeve (6) and the inner side wall of the oil feeding pipeline (2) in a circumferential equidistance mode.

6. The oil filter anti-theft oil tank filler opening according to claim 1, characterized in that: the inner wall fixedly connected with of filter screen (9) makes things convenient for pull rod (13) that filter screen (9) were mentioned, the interior anchor ring fixedly connected with of nut ring (10) makes things convenient for nut ring (10) pivoted cross rotary rod (14).

7. The oil filter anti-theft oil tank filler opening according to claim 1, further comprising:

the protective box body is arranged around the oil filling port of the oil filtering anti-theft oil tank in a surrounding manner; wherein the content of the first and second substances,

the protective box body comprises a box body and a box door; the box door is arranged right opposite to the oil filling port;

an electric lock (15) arranged on the box door, connected with the controller (16) and used for:

receiving a control instruction transmitted by the controller (16) to lock or unlock the box door;

feeding back an open or closed state of the door to a controller (16);

the display screen (17) is arranged on the box door and is connected with the controller (16); the display screen (16) is provided with an unlocking two-dimensional code and a payment two-dimensional code;

a controller (16) connected to the server (19) via a first communication chip (18);

a binding terminal (20) connected to the server (19) via a second communication chip (21); when oiling, a worker scans the unlocking two-dimensional code by using a mobile phone to send an unlocking request to a server (19), the server sends the unlocking request to a binding terminal (20) through a second communication chip (21), the binding terminal (20) receives the unlocking request and feeds back a result, the feedback result is sent to a controller (16), and the controller (16) sends a corresponding control instruction to lock or unlock the box door; when oiling is finished, a worker scans the payment two-dimensional code by using a mobile phone to send payment information to the server (19), the server (19) sends the payment information to the binding terminal (20) through the second communication chip (21), and the binding terminal (20) receives the payment information and pays after confirming that no mistake exists.

8. The oil filter anti-theft oil tank filler opening according to claim 7, further comprising:

the alarm device (22) is connected with the controller (16);

the electric lock (15) comprises a lock cylinder device (151), a servo motor (152), a position sensor (153), a sound collector (154) and a sound processing device (155);

the lock cylinder device (151) is respectively connected with the servo motor (152) and the position sensor (153);

the servo motor (152) is used for receiving a control instruction transmitted by the controller (16) to lock or unlock the box door;

the position sensor (153) is used for feeding back the position state of the lock cylinder device (151) to a controller (16);

the sound collector (154) is arranged on the lock cylinder device (151) and is used for collecting unlocking sound generated by the lock cylinder device;

the sound processing device (155) is connected with the sound collector (154) and is used for preprocessing the unlocking sound collected by the sound collector (154) and sending the preprocessed unlocking sound to the controller (16);

the server (19) is used for receiving the preprocessed unlocking sound sent by the controller (16) through the first communication chip (18) and comparing the preprocessed unlocking sound with the preset unlocking sound, when the abnormal unlocking sound is judged, the server (19) sends an alarm instruction to the controller (16) and sends alarm information to the binding terminal (20) to remind a user of processing the abnormal unlocking sound in time, and the controller (16) receives the alarm instruction and controls the alarm device (22) to alarm.

9. The oil filter anti-theft oil tank filler opening according to claim 8, characterized in that the pretreatment comprises pre-emphasis treatment, framing windowing and feature extraction; judge whether the sound of unblanking is the sound of unusually unblanking, include:

s1, pre-emphasis processing is carried out on the unlocking sound collection value at the moment t:

z(t)＝x(t)-ax(t-1)

wherein x (t) is an unlocking sound acquisition value at the time t; a is a pre-emphasis coefficient, and a belongs to (0.9, 1.1); x (t-1) is an unlocking sound acquisition value at the time of t-1;

s2, performing frame windowing and short-time Fourier transform processing on the unlocking sound collection value at the time t obtained by the pre-emphasis processing to obtain an unlocking sound signal S (m) at the time t in a time-frequency domain;

s3, extracting the characteristics of the obtained time-frequency domain unlocking sound signal to obtain short-time energy parameters:

wherein E is_i(m) is the short-time energy of the ith frame; l is the frame length of the ith frame; s_i(m) is the ith frame sound in the time-frequency domain unlocking sound signalA signal; m1 is the total number of frame dividing points contained in the frame length L in the ith frame; m is the mth frame dividing point in the ith frame with the frame length within L;

s4, comparing the calculated short-time energy with preset short-time energy obtained from preset unlocking sound, and judging whether the short-time energy is abnormal unlocking sound according to the comparison result;

the preset short-time energy is set toIn thatIf the preset short-time energy difference value is adopted, the unlocking sound is an abnormal unlocking sound; otherwise, the unlocking sound is not an abnormal unlocking sound.

Technical Field

The invention relates to the technical field of oil tank theft prevention, in particular to an oil filling port of an oil filtering theft prevention oil tank.

Background

The oil tank is a container for fuel on an airplane or an automobile and is a special container for storing hydraulic oil or hydraulic liquid in a hydraulic system.

The large logistics truck has the advantages that the large logistics truck is heavy in load, high cruising ability is achieved in the long-distance transportation process, the capacity requirement on the oil tank is high, the whole oil tank of the truck is large, the amount of loaded oil is large, lawless persons can easily steal the oil in the oil tank, the existing oil tank oil filling port is simple in structure, the hose is easily inserted into the oil tank, oil can be stolen conveniently, and the large logistics truck can take the opportunity for the lawless persons.

The invention provides an oil filling port of an oil filtering anti-theft oil tank.

Disclosure of Invention

The invention aims to provide an oil filter anti-theft oil tank oil filling port to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: oil filter theftproof oil tank oil filler hole, including the oil tank, the oil filler hole has been seted up to the upper surface of oil tank, and the inner wall fixedly connected with oil feeding pipeline of this oil filler hole, oil feeding pipeline's oil inlet inner wall rotates and is connected with sealed lid, the spout has been seted up to oil feeding pipeline's inner wall, and the inner wall sliding connection of this spout has the chucking ring, the lower fixed surface of chucking ring is connected with L type chucking pole, the lower fixed surface of L type chucking pole is connected with the theftproof protective sheath, the oil feed through-hole of a plurality of looks adaptations is all seted up to the inside wall of theftproof protective sheath and oil feeding pipeline's inside wall, the inner ring face fixedly connected with solid fixed ring of chucking ring, gu fixed ring's upper surface overlap joint has the filter screen, the inner ring face of chucking ring has seted up the thread groove, and the inner wall threaded connection of.

Preferably, the upper surface of the sealing cover is fixedly connected with a knob which is convenient for the sealing cover to rotate, and the sealing cover and the knob are made of copper.

Preferably, the quantity of L type chucking pole is four, four L type chucking pole circumference equidistance sets up the lower surface at the chucking ring.

Preferably, the oil feeding pipeline is internally provided with a clamping groove matched with the L-shaped clamping rod, and the outer surface of the L-shaped clamping rod is sleeved with a clamping spring.

Preferably, the oil inlet through holes are equally divided into two groups, and the two groups are a plurality of oil inlet through holes are circumferentially and equidistantly arranged on the inner side wall of the anti-theft protective sleeve and the inner side wall of the oil feeding pipeline respectively.

Preferably, the inner wall of the filter screen is fixedly connected with a pull rod which facilitates lifting of the filter screen, and the inner annular surface of the nut ring is fixedly connected with a cross-shaped rotary rod which facilitates rotation of the nut ring.

In one embodiment, the oil filter anti-theft oil tank filler opening further comprises:

the protective box body is arranged around the oil filling port of the oil filtering anti-theft oil tank in a surrounding manner; wherein the content of the first and second substances,

the protective box body comprises a box body and a box door; the box door is arranged right opposite to the oil filling port;

the electric lock is arranged on the box door, is connected with the controller and is used for:

receiving a control instruction transmitted by the controller to lock or unlock the box door;

feeding back the opening or closing state of the box door to a controller;

the display screen is arranged on the box door and is connected with the controller; the display screen is provided with an unlocking two-dimensional code and a payment two-dimensional code;

the controller is connected with the server through the first communication chip;

the binding terminal is connected with the server through the second communication chip; when oiling, a worker scans the unlocking two-dimensional code by using a mobile phone to send an unlocking request to a server, the server sends the unlocking request to a binding terminal through a second communication chip, the binding terminal receives the unlocking request and feeds back a result, the feedback result is sent to a controller, and the controller sends a corresponding control instruction to lock or unlock the box door; when oiling is completed, a worker scans the payment two-dimensional code by using a mobile phone and sends payment information to the server, the server sends the payment information to the binding terminal through the second communication chip, and the binding terminal receives the payment information and carries out payment after confirming that no mistake exists.

In one embodiment, the oil filter anti-theft oil tank filler opening further comprises:

the alarm device is connected with the controller;

the electric lock comprises a lock cylinder device, a servo motor, a position sensor, a sound collector and a sound processing device;

the lock cylinder device is respectively connected with the servo motor and the position sensor;

the servo motor is used for receiving a control instruction transmitted by the controller to lock or unlock the box door;

the position sensor is used for feeding back the position state of the lock cylinder device to the controller;

the sound collector is arranged on the lock cylinder device and is used for collecting unlocking sound generated by the lock cylinder device;

the sound processing device is connected with the sound collector and used for preprocessing the unlocking sound collected by the sound collector and sending the preprocessed unlocking sound to the controller;

the server is used for receiving the preprocessed unlocking sound sent by the controller through the first communication chip and comparing the preprocessed unlocking sound with the preset unlocking sound, when the abnormal unlocking sound is judged, the server sends an alarm instruction to the controller and sends alarm information to the binding terminal to remind a user of processing the abnormal unlocking sound in time, and the controller receives the alarm instruction and controls the alarm device to give an alarm.

In one embodiment, the preprocessing comprises pre-emphasis processing, framing and windowing, and feature extraction; judge whether the sound of unblanking is the sound of unusually unblanking, include:

s1, pre-emphasis processing is carried out on the unlocking sound collection value at the moment t:

z(t)＝x(t)-ax(t-1)

wherein x (t) is an unlocking sound acquisition value at the time t; a is a pre-emphasis coefficient, and a belongs to (0.9, 1.1); x (t-1) is an unlocking sound acquisition value at the time of t-1;

s2, performing frame windowing and short-time Fourier transform processing on the unlocking sound collection value at the time t obtained by the pre-emphasis processing to obtain an unlocking sound signal S (m) at the time t in a time-frequency domain;

s3, extracting the characteristics of the obtained time-frequency domain unlocking sound signal to obtain short-time energy parameters:

wherein E is_i(m) is the short-time energy of the ith frame; l is the frame length of the ith frame; s_i(m) is the ith frame sound signal in the time-frequency domain unlocking sound signal; m1 is the total number of frame dividing points contained in the frame length L in the ith frame; m is the mth frame dividing point in the ith frame with the frame length within L;

s4, comparing the calculated short-time energy with preset short-time energy obtained from preset unlocking sound, and judging whether the short-time energy is abnormal unlocking sound according to the comparison result;

the preset short-time energy is set toIn thatIf the preset short-time energy difference value is adopted, the unlocking sound is an abnormal unlocking sound; otherwise, the unlocking sound is not an abnormal unlocking sound.

Advantageous effects

The invention provides an oil filter anti-theft oil tank oil filler, which has the following beneficial effects:

1. this oil strain theftproof oil tank oil filler hole through setting up the oil feed through-hole, conveniently refuels for the oil tank is inside, through setting up sealed lid and theftproof protective sheath, can prevent that the inside oil of oil tank from volatilizing, through setting up chucking ring, L type chucking pole, theftproof protective sheath and chucking spring, enables the oil tank oil filler hole and has the effect of theftproof to make whole oil tank oil filler hole have the effect of theftproof.

2. This oil filter theftproof oil tank oil filler hole through setting up the filter screen, can prevent that great impurity from getting into in the oil tank, through setting up solid fixed ring and nut ring, makes things convenient for the fixed of filter screen and takes to make the filter screen have the effect of convenient clearance debris.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

fig. 4 is a block diagram of an oil filter anti-theft oil tank filler according to another embodiment of the invention.

In the figure: the intelligent anti-theft alarm device comprises an oil tank 1, an oil feeding pipeline 2, a sealing cover 3, a clamping ring 4, a clamping rod 5L, an anti-theft protective sleeve 6, an oil inlet through hole 7, a fixing ring 8, a filter screen 9, a nut ring 10, a knob 11, a clamping spring 12, a pull rod 13, a cross rotating rod 14, an electric lock 15, a lock cylinder device 151, a servo motor 152, a position sensor 153, a sound collector 154, a sound processing device 155, a controller 16, a display screen 17, a first communication chip 18, a server 19, a binding terminal 20, a second communication chip 21 and an alarm device 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the oil filter anti-theft oil tank oil filling port comprises an oil tank 1, an oil filling port is formed in the upper surface of the oil tank 1, an oil filling pipeline 2 is fixedly connected to the inner wall of the oil filling port, a sealing cover 3 is rotatably connected to the inner wall of an oil inlet of the oil filling pipeline 2, a knob 11 which facilitates the sealing cover 3 to rotate is fixedly connected to the upper surface of the sealing cover 3, and the sealing cover 3 and the knob 11 are made of copper.

The spout has been seted up to the inner wall of oil feeding pipeline 2, and the inner wall sliding connection of this spout has chucking ring 4, the lower fixed surface of chucking ring 4 is connected with L type chucking pole 5, the quantity of L type chucking pole 5 is four, the 5 circumference equidistance of four L type chucking poles set up at the lower surface of chucking ring 4, the chucking groove with 5 looks adaptations of L type chucking pole is seted up to the inside of oil feeding pipeline 2, the outer surface cover of L type chucking pole 5 is equipped with chucking spring 12.

Lower fixed surface of L type chucking pole 5 is connected with theftproof protective sheath 6, through setting up sealed lid 3 and theftproof protective sheath 6, can prevent that the oil of 1 inside of oil tank from volatilizing, the oil feed through-hole 7 of a plurality of looks adaptation is all seted up to the inside wall of theftproof protective sheath 6 and the inside wall of oiling pipeline 2, a plurality of oil feed through-hole 7 is equallyd divide into two sets ofly, two sets of a plurality of oil feed through-hole 7 circumference equidistance respectively sets up the inside wall at theftproof protective sheath 6 and the inside wall of oiling pipeline 2, through setting up oil feed through-hole 7, conveniently refuel for 1 insid.

The inner ring surface of the clamping ring 4 is fixedly connected with a fixing ring 8, the upper surface of the fixing ring 8 is lapped with a filter screen 9, the filter screen 9 is arranged to prevent larger impurities from entering the oil tank 1, the inner wall of the filter screen 9 is fixedly connected with a pull rod 13 which is convenient for the filter screen 9 to lift, the inner ring surface of the clamping ring 4 is provided with a thread groove, and the inner wall of the thread groove is connected with a nut ring 10 for fixing the filter screen 9 by a thread, the inner ring surface of the nut ring 10 is fixedly connected with a cross-shaped rotating rod 14 which facilitates the rotation of the nut ring 10, the filter screen 9 is convenient to fix and take by arranging a fixing ring 8 and the nut ring 10, thereby make filter screen 9 have the effect of conveniently clearing up debris, through setting up chucking ring 4, L type chucking pole 5, theftproof protective sheath 6 and chucking spring 12, enable the oil tank oil filler hole and have the effect of theftproof to make whole oil tank oil filler hole have the effect of theftproof.

The working principle is as follows: when the oil filling port of the anti-theft oil tank needs to be used and oil needs to be filled, the outlet end of the oil filling gun is propped against the cross-shaped rotating rod 14, so that the anti-theft protective sleeve 6 moves downwards, when the inner side wall of the anti-theft protective sleeve 6 is communicated with the oil inlet through hole 7 of the inner side wall of the oil filling pipeline 2, the oil can be added into the oil tank 1, when the oil gun is pulled out after the oil is added, the anti-theft protective sleeve 6 is reset under the action of the L-shaped clamping rod 5 and the clamping spring 12, the oil filling port of the oil tank has the anti-theft effect by utilizing the anti-theft protective sleeve 6, thereby the oil filling port of the whole oil tank has the anti-theft effect, when the impurities on the filter screen 9 need to be cleaned, the nut ring 10 is screwed off by the aid of the cross-shaped rotating rod 14, the filter screen 9 is taken out by the aid of the pull rod 13, so that impurities on the filter screen 9 can be cleaned, the filter screen 9 is placed on the fixing ring 8 after the cleaning is finished, and the nut ring 10 is used for fixing.

FIG. 4 is a block diagram of an oil filter anti-theft tank filler opening according to yet another embodiment of the invention; as shown in fig. 4, in an embodiment, the oil filter anti-theft oil tank oil filler opening further includes:

the protective box body is arranged around the oil filling port of the oil filtering anti-theft oil tank in a surrounding manner; wherein the content of the first and second substances,

the protective box body comprises a box body and a box door; the box door is arranged right opposite to the oil filling port;

an electric lock 15 provided on the door, connected to the controller 16, for:

receiving a control instruction transmitted by the controller 16 to lock or unlock the door;

feeding back the open or closed state of the door to the controller 16;

the display screen 17 is arranged on the box door and is connected with the controller 16; the display screen 17 is provided with an unlocking two-dimensional code and a payment two-dimensional code;

a controller 16 connected to the server 19 via a first communication chip 18;

a binding terminal 20 connected with the server 19 through a second communication chip 21; when oiling, a worker scans the unlocking two-dimensional code by using a mobile phone to send an unlocking request to the server 19, the server 19 sends the unlocking request to the binding terminal 20 through the second communication chip 21, the binding terminal 20 receives the unlocking request and feeds back a result, the feedback result is sent to the controller 16, and the controller 16 sends a corresponding control instruction to lock or unlock the box door; when the oiling is finished, the staff scans the payment two-dimensional code by using the mobile phone and sends payment information to the server 19, the server 19 sends the payment information to the binding terminal 20 through the second communication chip 21, and the binding terminal 20 receives the payment information and carries out payment after confirming that no mistake exists.

The working principle of the technical scheme is as follows: the protection box body is arranged around the oil inlet of the oil filtering anti-theft oil tank in a surrounding mode, redundant design is carried out, the oil inlet of the oil filtering anti-theft oil tank is protected conveniently, sundries, water drops and the like are prevented from falling into the oil inlet of the oil filtering anti-theft oil tank, the reliability of the oil inlet of the oil filtering anti-theft oil tank is improved, the service life of the oil filtering anti-theft oil tank is prolonged, and cost is. The protective box body comprises a box body and a box door; the chamber door sets up just to filling port department, is convenient for open the chamber door when refueling, and is more convenient. And the electric lock 15 is arranged on the box door, is connected with the controller 16, receives a control instruction transmitted by the controller 16, locks or unlocks the box door, and realizes automatic control. Meanwhile, the electric lock 15 feeds back the open or closed state of the door to the controller 16, so that the controller 16 can record the state of the door. And the display screen 17 is arranged on the box door and can be a touch display screen 17. The display screen 17 is provided with an unlocking two-dimensional code and a payment two-dimensional code. When oiling, a worker scans the unlocking two-dimensional code by using a mobile phone to send an unlocking request to the server 19, the server 19 sends the unlocking request to the binding terminal 20 through the second communication chip 21, the binding terminal 20 receives the unlocking request and feeds back a result, the feedback result is sent to the controller 16, and the controller 16 sends a corresponding control instruction to lock or unlock the box door; when the oiling is finished, the staff scans the payment two-dimensional code by using the mobile phone and sends payment information to the server 19, the server 19 sends the payment information to the binding terminal 20 through the second communication chip 21, and the binding terminal 20 receives the payment information and carries out payment after confirming that no mistake exists. The binding terminal 20 may be a mobile phone of a vehicle owner, and the mobile phone is in a corresponding binding relationship with the server 19 and the fuel filler. When the vehicle is refueled, and the binding terminal 20 confirms the unlocking request, the unlocking is agreed, and an unlocking instruction is sent to the controller 16, so that the electric lock 15 is controlled to be opened for refueling. When the oiling is completed, the staff scans the payment two-dimensional code, sends the payment information to the binding terminal 20, and pays through the binding terminal 20.

The beneficial effects of the above technical scheme are that: the security to the oil tank oil filler hole is improved, and the theftproof effect is better. Meanwhile, in the oiling process, direct contact between workers and a vehicle owner is reduced, and infection of diseases is avoided. Set up unblock two-dimensional code and payment two-dimensional code, can relax more convenient completion refuel, labour saving and time saving improves user experience.

In one embodiment, the oil filter anti-theft oil tank filler opening further comprises:

an alarm device 22 connected to the controller 16;

the electric lock 15 comprises a lock cylinder device 151, a servo motor 152, a position sensor 153, a sound collector 154 and a sound processing device 155;

the lock cylinder device 151 is respectively connected with the servo motor 152 and the position sensor 153;

the servo motor 152 is used for receiving a control instruction transmitted by the controller 16 to lock or unlock the door;

the position sensor 153 is used for feeding back the position state of the lock cylinder device 151 to the controller 16;

the sound collector 154 is arranged on the lock cylinder device 151 and is used for collecting unlocking sound generated by the lock cylinder device 151;

the sound processing device 155 is connected to the sound collector 154, and configured to pre-process the unlocking sound collected by the sound collector 154, and send the pre-processed unlocking sound to the controller 16;

the server 19 is configured to receive the preprocessed unlocking sound sent by the controller 16 through the first communication chip 18 and compare the preprocessed unlocking sound with a preset unlocking sound, when the abnormal unlocking sound is determined, the server 19 sends an alarm instruction to the controller 16 and sends alarm information to the binding terminal 20 to remind a user of timely processing, and the controller 16 receives the alarm instruction and controls the alarm device 22 to alarm.

The working principle of the technical scheme is as follows: the alarm device 22 may be an audible and visual alarm. And the servo motor 152 is used for receiving a control command transmitted by the controller 16 to lock or unlock the door. And the position sensor 153 is used for feeding back the position state of the lock cylinder device 151 to the controller 16, so that the controller 16 can record the state of the lock cylinder device 151 and further record the opening or closing state of the door. And a sound collector 154 for collecting an unlocking sound generated from the key cylinder device 151. The sound processing device 155 is connected with the sound collector 154 and used for preprocessing the unlocking sound collected by the sound collector 154 and sending the preprocessed unlocking sound to the controller 16, so that the preprocessed unlocking sound is clearer and more accurate, and the sound identification accuracy is improved. The server 19 receives the preprocessed unlocking sound sent by the controller 16 through the first communication chip 18 and compares the preprocessed unlocking sound with a preset unlocking sound, when the abnormal unlocking sound is judged, the server 19 sends an alarm instruction to the controller 16 and sends alarm information to the binding terminal 20 to remind a user of processing the abnormal unlocking sound in time, and the controller 16 receives the alarm instruction and controls the alarm device 22 to give an alarm.

The beneficial effects of the above technical scheme are that: when detecting that the sound of unblanking is unusual, the expression probably someone is carrying out the picklock, is taking place the action of stealing, and the alarm device 22 of control setting on the oil tank reports to the police, sends alarm information to binding terminal 20 simultaneously and reminds the user in time to handle, improves the security to the oil tank oil filler hole, and the theftproof effect is better.

In one embodiment, the preprocessing comprises pre-emphasis processing, framing and windowing, and feature extraction; judge whether the sound of unblanking is the sound of unusually unblanking, include:

s1, pre-emphasis processing is carried out on the unlocking sound collection value at the moment t:

z(t)＝x(t)-ax(t-1)

wherein x (t) is an unlocking sound acquisition value at the time t; a is a pre-emphasis coefficient, and a belongs to (0.9, 1.1); x (t-1) is an unlocking sound acquisition value at the time of t-1;

s2, performing frame windowing and short-time Fourier transform processing on the unlocking sound collection value at the time t obtained by the pre-emphasis processing to obtain an unlocking sound signal S (m) at the time t in a time-frequency domain;

s3, extracting the characteristics of the obtained time-frequency domain unlocking sound signal to obtain short-time energy parameters:

wherein E is_i(m) is the short-time energy of the ith frame; l is the frame length of the ith frame; s_i(m) is the ith frame sound signal in the time-frequency domain unlocking sound signal; m1 is the total number of frame dividing points contained in the frame length L in the ith frame; m is the mth frame dividing point in the ith frame with the frame length within L;

s4, comparing the calculated short-time energy with preset short-time energy obtained from preset unlocking sound, and judging whether the short-time energy is abnormal unlocking sound according to the comparison result;

the preset short-time energy is set toIn thatIf the preset short-time energy difference value is adopted, the unlocking sound is an abnormal unlocking sound; otherwise, the unlocking sound is not an abnormal unlocking sound.

The working principle of the technical scheme is as follows: the pre-emphasis process can reduce the effect of noise in the audio signal while emphasizing the high frequency audio signal. And the frame windowing and short-time Fourier transform processing are carried out on the unlocking sound acquisition value at the t moment obtained by the pre-emphasis processing to obtain the unlocking sound signal at the time frequency domain at the t moment, so that the unlocking sound signal can be processed in the time frequency domain, and the calculation is convenient. Calculating a short-time energy parameter, comparing the calculated short-time energy with a preset short-time energy to obtain a difference value between the calculated short-time energy and the preset short-time energy, and comparing an absolute value of the difference value with a preset short-time energy difference value. Specifically, the preset short-time energy is set asIn thatIf the preset short-time energy difference value is adopted, the unlocking sound is an abnormal unlocking sound; otherwise, the unlocking sound is not abnormal unlocking sound, and when the unlocking sound is abnormal, the server 19 sends an alarm instruction to the controller 16 and sends alarm information to the controllerThe binding terminal 20 reminds the user of timely processing, and the controller 16 receives an alarm instruction and controls the alarm device 22 to give an alarm.

The beneficial effects of the above technical scheme are that: the unlocking sound collected by the sound collector 154 is preprocessed, so that the accuracy of sound identification can be improved, meanwhile, the short-time energy parameter is calculated, the calculation amount of solving by using a frame of signal is small, the calculation is simple, the reflected information is accurate, and the realization is easy. When the unlocking sound is abnormal, the server 19 sends an alarm instruction to the controller 16 and sends alarm information to the binding terminal 20 to remind a user of timely processing, the controller 16 receives the alarm instruction and controls the alarm device 22 to give an alarm, the anti-theft performance is improved, and the user experience is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.