CN112277875A - Magnetic power generation anti-disassembly self-destruction device for vehicle-mounted unit - Google Patents
Magnetic power generation anti-disassembly self-destruction device for vehicle-mounted unit Download PDFInfo
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- CN112277875A CN112277875A CN202011149798.8A CN202011149798A CN112277875A CN 112277875 A CN112277875 A CN 112277875A CN 202011149798 A CN202011149798 A CN 202011149798A CN 112277875 A CN112277875 A CN 112277875A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
Abstract
The invention provides a magnetic power generation anti-disassembly self-destruction device for a vehicle-mounted unit, which is characterized by comprising the following components: the anti-dismantling device comprises an anti-dismantling rod, a chip with a self-destruction function, a magnetic core and a coil; wherein: the chip with the self-destruction function is electrically connected with the coil; when the vehicle-mounted unit is attached to an external device, the anti-dismounting rod is in a state of being extruded by external force, and the control coil does not cut the magnetic line of force of the magnetic core; when the vehicle-mounted unit is dismounted from the external device, the external force action of the dismounting-preventing rod is lost, the trigger coil cuts the magnetic force line of the magnetic core to generate current, and the chip with the self-destruction function starts the self-destruction program after obtaining the current. When the vehicle-mounted unit is detached from the external device through external force, the detachment prevention rod trigger coil cuts magnetic lines of force to generate current, and the chip with the self-destruction function starts a self-destruction program after acquiring the current, so that the detachment prevention function is realized.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a magnetic power generation anti-disassembly self-destruction device for a vehicle-mounted unit.
Background
With the popularization of electronic systems ETC for electronic toll collection, on-board units installed on vehicle sides are widely used. In order to avoid the problem caused by the fact that the vehicle-mounted unit is detached from the window and then is mounted on another vehicle, a detachment prevention device (such as a detachment prevention push switch) is required to be arranged on the vehicle-mounted unit to detect whether the vehicle-mounted unit is detached. Specifically, the existing on-board unit is usually powered by a battery, a chip of the on-board unit is connected with the battery and a tamper switch, respectively, and when the on-board unit is correctly installed, the tamper switch is pressed down, and when the on-board unit is detached, the tamper switch bounces, so that the chip can record the state of the switch, and the detachment of the on-board unit is detected through the bouncing of the switch. However, the above method has a possibility that the battery is maliciously exhausted or destroyed, when the chip is not powered, the chip of the on-board unit cannot detect whether the on-board unit is detached, and if the on-board unit is detached, embezzled and reinstalled on the vehicle-returning window when the power is off, because the anti-detaching switch is pressed again after reinstallation, the battery is powered on or replaced immediately, the on-board unit still cannot detect whether the battery is detached during the power-off period, and a great potential safety hazard exists. Therefore, a new technology is needed to solve the problem that the vehicle-mounted unit cannot detect whether the unit is detached during power failure.
Disclosure of Invention
The present invention is directed to solving the above problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention mainly aims to provide a magnetic power generation anti-dismantling self-destruction device for a vehicle-mounted unit, which comprises: the anti-dismantling device comprises an anti-dismantling rod, a chip with a self-destruction function, a magnetic core and a coil; wherein: the chip with the self-destruction function is electrically connected with the coil; when the vehicle-mounted unit is attached to an external device, the anti-dismounting rod is in a state of being extruded by external force, and the control coil does not cut the magnetic line of force of the magnetic core; when the vehicle-mounted unit is dismounted from the external device, the external force action of the dismounting-preventing rod is lost, the trigger coil cuts the magnetic force line of the magnetic core to generate current, and the chip with the self-destruction function starts the self-destruction program after obtaining the current.
According to the technical scheme provided by the invention, the magnetic power generation anti-dismantling self-destruction device for the vehicle-mounted unit is provided, and through the magnetic power generation anti-dismantling self-destruction device for the vehicle-mounted unit provided by the embodiment, when the vehicle-mounted unit is dismantled from an external device, the anti-dismantling rod loses the external force effect, the coil cuts magnetic lines of force, current is generated, and the chip with the self-destruction function detects the current to trigger the anti-dismantling process, so that the anti-dismantling function of the vehicle-mounted unit is realized. The safety of the on-board unit is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit according to embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit according to embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit according to embodiment 2 of the present invention;
fig. 6 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit according to embodiment 2 of the present invention;
fig. 7 is a schematic structural diagram of a magnetic power generation tamper self-destruction prevention device of a vehicle-mounted unit according to embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or location.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
The present embodiment provides a specific implementation of a magnetic power generation tamper-evident self-destructive device for an on-board unit, which, with reference to fig. 1 to 3, may generally include: the anti-dismantling device comprises an anti-dismantling rod 3, a chip 2 with a self-destruction function, a magnetic core 8 and a coil 6;
wherein: the chip 2 with the self-destruction function is electrically connected with the coil 6;
as shown in fig. 2, when the on-board unit is attached to an external device, the anti-detachment rod 3 is in a state of being pressed by an external force, and the control coil 6 does not cut the magnetic line of force of the magnetic core 8;
as shown in fig. 1, when the on-board unit is removed from the external device, the external force action of the detachment prevention rod 3 is lost, the trigger coil 6 cuts the magnetic force line of the magnetic core 8 to generate current, and the chip 2 with the self-destruction function starts the self-destruction process after obtaining the current.
Through the magnetic power generation anti-dismantling self-destruction device for the vehicle-mounted unit provided by the embodiment, when the vehicle-mounted unit is dismantled from an external device, the anti-dismantling rod 3 loses the external force effect, the coil 6 cuts magnetic lines of force, current is generated, the chip 2 with the self-destruction function detects the current, the anti-dismantling flow is triggered, and therefore the anti-dismantling function of the vehicle-mounted unit is achieved.
In this embodiment, the anti-tamper bar 3, the chip 2 with self-destruction function, the magnetic core 8 and the coil 6 have various fixed relationships and position structures, and the following description will provide a specific structure to exemplify the technical solution of this embodiment with reference to fig. 1 to 3, but the present invention is not limited thereto:
the magnetic power generation anti-detachment self-destruction device for the on-board unit of the embodiment further comprises:
the anti-disassembly bar mounting piece 1, the first spring 4, the sleeve 5, the coil 6 and the second spring 7; wherein:
an accommodating space is formed between the chip 2 with the self-destruction function and the anti-dismantling rod mounting piece 1;
the anti-dismantling rod mounting piece 1 comprises a clamping groove 101 which is sunken towards the accommodating space, and a first through hole 102 is formed in the clamping groove 101;
the sleeve 5 is arranged in the accommodating space and fixed on the chip 2 with the self-destruction function, and the sleeve 5 is of a hollow structure;
a second through hole 501 is formed in the wall of the sleeve 5, the second through hole 501 is opposite to the first through hole 102, a second spring 7 is arranged at one end of the sleeve 5, one end of the second spring 7 is fixed on the sleeve 5, the other end of the second spring 7 is a free end, and the second spring 7 stretches in the sleeve 9;
the coil 6 is wound on the outer wall of the sleeve 5 and is electrically connected with the chip 2 with the self-destruction function;
the magnetic core 8 is arranged in the sleeve 5;
the anti-disassembly rod 3 comprises a first blocking piece 301, a connecting rod 302 and a second blocking piece 303 which are connected in sequence, the connecting rod 302 penetrates through the first through hole 102 and the second through hole 501, the first blocking piece 301 is located outside the anti-disassembly rod mounting piece 1, the shape of the first blocking piece 301 is matched with that of the clamping groove 101, the first blocking piece 301 is blocked by the clamping groove 101 and does not enter the accommodating space, the second blocking piece 303 is located in the accommodating space, and the second blocking piece 303 is blocked by the clamping groove 101 and does not separate from the accommodating space;
the first spring 4 is sleeved outside the connecting rod 302, the first spring 4 is arranged between the clamping groove 101 and the first blocking piece 301, only deforms between the first blocking piece 301 and the clamping groove 101, and does not enter the accommodating space;
when the vehicle-mounted unit is installed, the magnetic core 8 moves towards the second spring 7 in the sleeve 5 and presses the second spring 7, the second spring 7 contracts, the first blocking piece 301 is pressed on a vehicle window (an external device), the anti-dismounting rod 3 moves towards the sleeve 5, the upper surface of the first blocking piece 301 is flush with the outer surface of the anti-dismounting rod installation piece 1, the second blocking piece 302 extends into the sleeve 5, and the first spring 4 contracts;
as shown in fig. 2, after the on-board unit is mounted, the free end of the second spring 7 presses the magnetic core 8, and the removal prevention lever 3 blocks the movement of the magnetic core 8;
when the vehicle-mounted unit is detached, as shown in fig. 1, the first spring 4 ejects the detachment prevention rod 3, the second spring 7 ejects the magnetic core 8, the magnetic core 8 moves in the sleeve 5, the coil 6 generates current, and the chip arranged on the chip 2 with the self-destruction function detects the current to trigger the detachment prevention flow.
Alternatively, the tamper bar mounting member 1 may be a rear case of the on-board unit, integrally engaged with the chip 2 with a self-destruction function to form a housing of the on-board unit.
The shape of the locking groove 101 may be circular or rectangular, and may also be an elongated groove penetrating through the tamper bar mounting member 1, which is not limited in the present invention.
The shapes of the first through hole 102 and the second through hole 501 and the connecting rod 302 are matched, and the shapes may be circular or square, which is not limited in the present invention.
As an alternative to the embodiment of the invention, the coil 6 is wound around the outer wall of the sleeve 5 at the end remote from the second spring 7. The coil 6 is wound on the sleeve 5 at a position far away from the second spring 7, so that the speed of the magnetic core 8 moving from the second spring 7 to the coil 6 is maximum, and the effect of generating current by the coil 6 is better. Therefore, it is preferable that the in-vehicle unit is mounted such that the removal-preventing bar mounting member 1 side where the second spring 7 is located is mounted at a high position and the coil 6 side is mounted at a low position, and the magnetic core 8 is accelerated by gravity.
As an alternative to the present embodiment, one end of the sleeve 5 comprises a hollow bracket 502, and one end of the second spring 7 is fixed inside the hollow bracket 502. By arranging the second spring 7 inside the hollow holder 502, space of the sleeve 5 can be saved, resulting in a longer sliding distance of the magnetic core 8 and/or a smaller overall product of the on-board unit.
In use, the magnetic core 8 can be freely moved in the sleeve 5 in a factory state as shown in fig. 1.
When the installation is needed, an installer can move the magnetic core 8 towards the second spring 7 through the modes of pushing by the reset rod, pulling by the pull rope and the like (not shown in the figure), and extrude the second spring 7 to deform the second spring 7, then the installer installs the vehicle-mounted unit on the surface of the vehicle window (external device), and the anti-dismounting rod 3 enters the sleeve 5 to block the moving path of the magnetic core 8. After the installation, the second spring 7 is in a compressed state and pushes the magnet block 8 to abut against the anti-dismantling rod 3, and the magnet block 8 is blocked by the anti-dismantling rod 3 and cannot move continuously.
Once the on-board unit is detached from the window (external device), the first spring 4 will eject the anti-detachment rod 3 outwards, the second spring 7 will eject the magnetic core 8 continuously, so that the magnetic core 8 moves in the sleeve 5, and through the winding area of the coil 6, the coil 6 cuts the magnetic force line, so as to generate current, so that the chip 2 can detect the current, and the on-board unit is considered to be detached, and the anti-detachment process is started.
As an optional implementation manner of the embodiment of the present invention, the tamper flow includes: and deleting the confidential data in the chip. Specifically, when the chip can detect the current, the vehicle-mounted unit is considered to be detached, so that the confidential data is deleted, and the safety of the data in the vehicle-mounted unit is ensured.
Therefore, by using the magnetic power generation anti-disassembly self-destruction device for the vehicle-mounted unit, provided by the invention, after the vehicle-mounted unit is disassembled, the second spring pushes the magnetic core to pass through the coil winding area, the coil cuts magnetic lines of force, current is generated, the chip detects the current, and the anti-disassembly process is started, so that the anti-disassembly function of the vehicle-mounted unit is realized.
Example 2
The present embodiment provides another specific implementation of a magnetic power generation tamper-evident self-destructive device for an on-board unit, which, with reference to fig. 4 to 7, may generally include: the anti-dismantling device comprises an anti-dismantling rod 11, a chip 3 with a self-destruction function, a magnetic core 5 and a coil 7;
wherein: the chip 3 with the self-destruction function is electrically connected with the coil 7;
when the vehicle-mounted unit is attached to an external device, the anti-dismounting rod 11 is in a state of being extruded by external force, and the control coil 7 does not cut the magnetic line of force of the magnetic core 5;
when the vehicle-mounted unit is dismounted from the external device, the external force action of the dismounting-preventing rod 11 is lost, the trigger coil 7 cuts the magnetic force line of the magnetic core 5 to generate current, and the chip 3 with the self-destruction function starts the self-destruction flow after obtaining the current.
Through the magnetic power generation anti-dismantling self-destruction device for the vehicle-mounted unit provided by the embodiment, when the vehicle-mounted unit is dismantled from an external device, the anti-dismantling rod 11 loses the external force effect, the coil 7 cuts magnetic lines of force, current is generated, the chip 3 with the self-destruction function detects the current, the anti-dismantling flow is triggered, and therefore the anti-dismantling function of the vehicle-mounted unit is achieved.
In this embodiment, the anti-tamper bar 11, the chip 3 with self-destruction function, the magnetic core 5 and the coil 7 have various fixed relationships and position structures, and the following description will provide a specific structure to exemplify the technical solution of this embodiment with reference to fig. 4 to 7, but the technical solution of the present invention is not limited to this:
referring to fig. 4, the on-board unit according to the embodiment of the present invention further includes: backshell 1, preceding shell 2 to and the self-destruction device is prevented tearing open by magnetic power generation, wherein, the self-destruction device is prevented tearing open by magnetic power generation can see figure 5, in addition to preventing tearing open pole 11, have chip 3, magnetic core 5 and the coil 7 of self-destruction function, still include: the magnetic track lengthening frame 4, the coil frame 6, the accelerating tension spring 8, the rotary hook plate 9 and the hook plate return spring 10;
the rear shell 1 is clamped with the front shell 2 to form an accommodating space; the magnetic power generation anti-disassembly self-destruction device is accommodated in the accommodating space. Among them, the rear case 1 may be a device to be mounted described below.
The following describes the structure of the magnetic power generation tamper-evident self-destruct device with reference to fig. 5 to 7:
the magnetic core 5 is arranged on the magnetic track lengthening frame 4, the coil frame 6 is sleeved on the magnetic track lengthening frame 4 and slides on the magnetic track lengthening frame 4, the coil 7 is wound on the coil frame 6 according to a preset direction, the preset direction is configured to cut magnetic lines of force of the magnetic core 5, and the coil 7 is electrically connected with the chip 3;
one end of the acceleration tension spring 8 is fixed on the coil rack 6, the other end is fixed on the equipment to be installed, and the acceleration tension spring is configured to pull the coil rack 6 along the magnetic track lengthening rack 4;
the rotary hook plate 9 is hinged with the magnetic track lengthening frame 4;
one end of a hook plate return spring 10 is connected with the rotary hook plate 9, and the other end of the hook plate return spring 10 is fixedly connected with equipment to be installed;
the anti-dismantling rod 11 penetrates through a through hole formed in equipment to be installed;
in the anti-disassembly state, the coil rack 6 slides to the anti-disassembly position of the magnetic track lengthening rack 4, the equipment to be installed is fixed on a car window (external device), the anti-disassembly rod 11 is extruded by the car window (external device) and then extrudes the rotating hook plate 9, the rotating hook plate 9 is in the first position, the rotating hook plate 9 hooks the coil rack 6, the hook plate return spring 10 is in the stretching state, and the accelerating tension spring 8 is in the stretching state;
under the state of demolising, prevent that tear pole 11 is in free state, hook plate reset spring 10 will rotate hook plate 9 to waiting to install the equipment orientation pulling, make rotatory hook plate 9 rotate to the second position, break away from coil former 6, 8 pulling coil formers 6 slide to demolising the position along magnetic track extension frame 4 with higher speed, and coil 7 cuts the magnetic line of force of magnetic core 5, produces electric current, and the chip that sets up on the chip 3 detects electric current, starts the self-destruction flow.
Specifically, the magnetic track lengthening frame 4 may be provided with an accommodating portion, the magnetic core 5 is accommodated in the accommodating portion, and the magnetic core 5 may have a rectangular parallelepiped shape, a cylindrical shape, or the like, which is not particularly limited in the present invention. The magnetic track lengthening frame 4 may be an integrally formed structure, or may be a structure formed by splicing two parts, which is not limited in the present invention.
The coil rack 6 may be an annular structure, and is sleeved on the magnetic track lengthening rack 4 and can slide along the track direction of the magnetic track lengthening rack 4, and when the coil rack 6 slides, the coil 7 arranged on the coil rack can cut the magnetic force line of the magnetic core 5. The coil 6 may be electrically connected to the circuit board through a flying wire, and may also be electrically connected to the chip 3 through another method, which is not particularly limited in the present invention.
The extension spring 8 may be provided as one or more pieces, and may be provided according to the size of the accommodating space of the on-board unit, which is not particularly limited in the present invention.
As an optional implementation manner of the embodiment of the present invention, when two acceleration tension springs 8 are provided, one end of each acceleration tension spring 8 may be fixed on the coil frame 6 through a conductive member, or may be fixed on the coil frame 6 through a suspension spring PCB, so that the acceleration tension springs 8 may be electrically connected to the coil 7 through a conductive member or a suspension spring PCB or other conductor; the other end of each acceleration tension spring 8 can be fixed on the equipment to be installed through a fixed column, for example, the acceleration tension spring 8 can be fixed by a screw passing through the acceleration tension spring 8 and a screw hole formed in the fixed column through a screw, the chip 3 is electrically connected with the screw, for example, the chip is electrically connected in a flying wire mode and the like, or the screw can be directly passed through the chip 3 and the acceleration tension spring 8 to realize the electric connection between the chip 3 and the acceleration tension spring 8, so that the acceleration tension spring 8 is used as a conducting part between the coil 7 and the chip 3, and the flying wire mode and the like are not adopted for connection, so.
Can articulate rotatory hook plate 9 in the upper end of magnetic track extension frame 4, rotatory hook plate 9 can be at accommodation space internal rotation, and rotatory hook plate 9 is located the upper portion of coil former 6, can block that coil former 6 breaks away from magnetic track extension frame 4, of course, also can set up stop part on magnetic track extension frame 4, avoids coil former 6 to break away from magnetic track extension frame 4.
The rotating hook plate 9 may have an L-shaped structure, and of course, other shapes may be adopted, so long as the structure capable of realizing the function of the rotating hook plate 9 of the present invention is within the protection scope of the present invention.
When the rotary hook plate 9 is in the anti-disassembly state, the coil rack 6 can be hooked by the extrusion of the anti-disassembly rod 11, so that the coil rack 6 is kept in the anti-disassembly position, the hook plate return spring 10 is in the stretching state, and the acceleration tension spring 8 is in the stretching state; under the state of demolising, prevent tearing open the unable extrusion of pole 11 and rotate hook plate 9, hook plate reset spring 10 pulling rotates hook plate 9 and breaks away from coil former 6, and extension spring 8 pulling coil former 6 slides to demolising the position along magnetic track extension frame 4 with higher speed, and coil 7 cuts the magnetic line of force of magnetic core 5, produces electric current, and the chip that sets up on the chip 3 detects electric current, starts the self-destruction flow.
As an optional implementation manner of the embodiment of the present invention, the self-destruction operation may be an operation of deleting sensitive data, or the like. And the safety of sensitive data in the vehicle-mounted unit can be ensured by executing self-destruction operation.
As an optional implementation manner of the embodiment of the present invention, the magnetic power generation anti-detachment self-destruction device provided in the embodiment of the present invention further includes: a microswitch 12; the microswitch 12 is electrically connected with the chip 3; in the tamper-proof state, the microswitch 12 is pressed by the first nesting frame 601 of the coil former 6, in the closed state. The chip arranged on the chip 3 can detect that the coil frame 6 is in place through the closing of the microswitch 12, and the vehicle-mounted unit is determined to be in the anti-dismounting state.
As an optional implementation manner of the embodiment of the present invention, after the coil frame 6 is pulled by the accelerating tension spring 8, the micro switch 12 is in the off state, and the chip arranged on the chip 3 can further determine that the on-board unit is in the removal state, and perform the self-destruction operation, thereby ensuring the security of the sensitive data in the on-board unit.
In the following, with reference to fig. 4 to 7, a specific structure for implementing the magnetic power generation anti-detachment self-destruction device is provided, but the invention is not limited thereto, and specifically, the following structure is provided:
the magnetic power generation anti-disassembly self-destruction device provided by the embodiment of the invention is arranged in a vehicle-mounted unit, the vehicle-mounted unit is provided with a rear shell 1 and a front shell 2, and the rear shell 1 is a device to be installed. This magnetism is generated electricity and is prevented tearing open self-destruction device includes: the device comprises a chip 3, a magnetic track lengthening frame 4, a magnetic core 5, a coil frame 6, a coil 7, an accelerating tension spring 8, a rotary hook plate 9, a hook plate return spring 10, an anti-dismounting rod 11 and a microswitch 12;
wherein:
magnetic track lengthening frame 4 is fixed in rear shell 1, and comprises left track lengthening frame 401 and right track lengthening frame 402, left track lengthening frame 401 comprises left track 4011, left mounting plate 4012, first left splicing section 4013 and second left splicing section 4014, one end of left track 4011 is provided with left mounting plate 4012 and first left splicing section 4013, the other end of left track 4011 is provided with second left splicing section 4014, left mounting plate 4012 is arranged in the extending direction of the length of left track 4011, first left splicing section 4013 and second left splicing section 4014 are arranged in the vertical direction of the length of left track 4011, left U-shaped clamping groove is arranged on the right side wall of left track 4011, right track lengthening frame 402 comprises right track 4021, right 402mounting plate 2, first right splicing section 4023 and second right splicing section 4024, one end of right track 4021 is provided with right splicing section 4022 and first right splicing section 4023, the other end of right track 4021 is provided with right splicing section 4024024022, the other end of right track 4021 is provided with right splicing section 4022, the extending direction of right track 4021, the first right split part 4023 and the second right split part 4024 are arranged in the vertical direction of the length of the right rail 4021, the left side wall of the right rail 4021 is provided with a right U-shaped clamping groove, after the left rail lengthening frame 401 and the right rail lengthening frame 402 are split, the first left split part 4013 and the first right split part 4023 are split, and the second left split part 4014 and the second right split part 4024 are split to form a clamping groove;
the magnetic core 5 is arranged in the clamping groove, the left end of the magnetic core 5 is clamped with the left U-shaped clamping groove, the right end of the magnetic core 5 is clamped with the right U-shaped clamping groove, and the NS pole of the magnetic core 5 is arranged in the extending direction of the length of the left rail 4011 and/or the right rail 4021;
the coil rack 6 is sleeved on the magnetic track lengthening rack 4, the coil rack 6 comprises a first sleeving frame 601 and a second sleeving frame 602, the first sleeving frame 601 and the second sleeving frame 602 are arranged in parallel, the first winding piece and the second winding piece are arranged in parallel and are perpendicular to the arrangement direction of the first sleeving frame 601 and the second sleeving frame 602 and are respectively fixed between the first sleeving frame 601 and the second sleeving frame 602, the first winding piece and the second winding piece are arranged in the extension direction of the length of the left rail 4011 and/or the right rail 4021, one end, far away from the rear shell 1, of the left side wall of the first sleeving frame 601 is provided with a left spring hanging PCB6011, one end, far away from the rear shell, of the right side wall of the first sleeving frame 601 is provided with a right spring hanging PCB6012, one end, near the rear shell 1, of the left side of the first sleeving frame 601 is provided with a left hook part, and one end, near the rear shell 1, of the right side wall of the first sleeving frame 601 is provided with a right hook part;
the coil 7 is wound on the first winding piece and the second winding piece, the coil 7 comprises a first end and a second end, the first end is electrically connected with the left hanging spring PCB6011, and the second end is electrically connected with the right hanging spring PCB 6012;
the acceleration tension spring 8 comprises a left acceleration tension spring 801 and a right acceleration tension spring 802, one end of the left acceleration tension spring 801 is electrically connected with a left hanging spring PCB6011, the other end of the left acceleration tension spring 801 is connected with a left fixing column 101, one end of the right acceleration tension spring 802 is electrically connected with a right hanging spring PCB6012, the other end of the right acceleration tension spring 802 is connected with a right fixing column 102, the left fixing column 101 is arranged on the rear shell 1 close to the second left splicing part 4014, and the right fixing column 102 is arranged on the rear shell 1 close to the second right splicing part 4024;
the rotary hook plate 9 comprises a hook plate connecting rod 901, a left hook 902, a right hook 903, a pin 904 and a pressing rod 905, wherein the pin 904 is arranged on the hook plate connecting rod 901 and is hinged with a left mounting plate 4012 and a right mounting plate 4022, the left hook 902 is arranged at the left end of the hook plate connecting rod 901 and is vertical to the hook plate connecting rod 901, the right hook 903 is arranged at the right end of the hook plate connecting rod 901 and is vertical to the hook plate connecting rod 901, and the pressing rod 905 is connected with the hook plate connecting rod 901 and is vertical to the hook plate connecting rod 901;
one end of the hook plate return spring 10 is fixedly connected with the pressing rod 905, and the other end is fixedly connected with the rear shell 1;
the anti-disassembly rod 11 passes through a through hole arranged on the rear shell 1 and is arranged corresponding to the position of the pressing rod 905;
the chip 3 is fixed on the rear shell 1 and is respectively and electrically connected with the other end of the left acceleration tension spring 801 and the other end of the right acceleration tension spring 802;
the microswitch 12 is arranged on the first left split part 4013 and/or the first right split part 4023 of the magnetic track lengthening frame 4 and is electrically connected with the chip 3; in the anti-disassembly state, the micro switch 12 is pressed by the first sleeving frame 601 of the coil frame 6 and is in a closed state;
in an anti-disassembly state, the coil rack 6 slides to a first left splicing part 4013 and a first right splicing part 4023 on the magnetic track lengthening rack 4, the rear shell 1 is fixed on a vehicle window (external device), the anti-disassembly rod 11 is extruded by the vehicle window (external device) and then extrudes the pressing rod 905, the rotating hook plate 9 is in a first position, the left hook 902 hooks the left hook part, the right hook 903 hooks the right hook part, at least part of coils of the coils 7 do not cover the magnetic core 5, the hook plate reset spring 10 is in a stretching state, and the acceleration tension spring 8 is in a stretching state;
in the dismantling state, the dismantling prevention rod 11 is in a free state, the hook plate return spring 10 pulls the pressing rod 905 towards the direction of the rear shell 1, the rotating hook plate 9 is made to rotate to the second position, the left hook 902 is separated from the left side hook part, the right hook 903 is separated from the right side hook part, the coil frame 6 is pulled by the acceleration tension spring 8 to slide towards the directions of the second left splicing part 4014 and the second right splicing part 4024 along the magnetic track lengthening frame 4, the magnetic core 5 is not covered by the coil 7, the coil 7 cuts the magnetic force line of the magnetic core 5 to generate current, the chip 3 detects the current, and the self-destruction operation is executed.
In the practical application process, the vehicle-mounted unit provided by the embodiment of the invention is in a dismantling state when leaving the factory, when the vehicle-mounted unit is installed, the coil frame 6 can be manually pushed to a dismantling prevention position, or a special tool can be used for extending into the opening to push the coil frame 6 to the dismantling prevention position, the dismantling prevention position is a first left split part 4013 and a first right split part 4023, the vehicle-mounted unit is fixed on a vehicle window (external device), the vehicle window (external device) extrudes the dismantling prevention rod 11, the dismantling prevention rod 11 can extrude a pressing rod 905 of the rotary hook plate 9 to enable the rotary hook plate 9 to be in a first position, and the first position is a position where the left hook 902 and the right hook 903 hook 6 hook the coil frame 6; at this time, after the on-board unit is installed, the chip of the on-board unit detects that the microswitch 12 is closed, and determines that the on-board unit is in the anti-disassembly state, so that sensitive data can be written into the on-board unit. Once the in-vehicle unit is detached from the window (external device), the detachment prevention lever 11 is in a free state, the hook plate return spring 10 pulls the pressing lever 905 of the rotary hook plate 9 toward the rear case 1, so that the rotary hook plate 9 is rotated to a second position where the left hook 902 is detached from the left hook portion and the right hook 903 is detached from the right hook portion, the tension acceleration spring 8 pulls the bobbin 6 to slide along the magnetic track extension frame to a detachment position away from the detachment prevention position at the second left split portion 4014 and the second right split portion 4024 and where the coil 7 does not cover the magnetic core 5, the coil 7 cuts the magnetic line of force of the magnetic core 5 during the sliding of the bobbin 6 to generate a current, the chip 3 detects the current, and a self-destruction operation is performed, such as deleting sensitive data.
By the magnetic power generation anti-disassembly self-destruction device provided by the embodiment of the invention, when the vehicle-mounted unit cannot get electricity, the coil in the magnetic power generation anti-disassembly self-destruction device cuts magnetic lines of force of the magnetic core to generate current so as to enable the chip to start a self-destruction program, so that the vehicle-mounted unit can be self-destructed after being disassembled under the condition of power or no power, and the safety of the vehicle-mounted unit is improved.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A magnetic power generation tamper-evident self-destructive device for on-board units, comprising: the anti-dismantling device comprises an anti-dismantling rod, a chip with a self-destruction function, a magnetic core and a coil; wherein:
the chip with the self-destruction function is electrically connected with the coil;
when the vehicle-mounted unit is attached to an external device, the anti-dismounting rod is in a state of being extruded by external force, and the coil is controlled not to cut the magnetic line of force of the magnetic core;
when the vehicle-mounted unit is dismounted from an external device, the dismounting-preventing rod loses the external force effect, the coil is triggered to cut the magnetic force lines of the magnetic core to generate current, and the chip with the self-destruction function starts a self-destruction program after acquiring the current.
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| CN202011149798.8A CN112277875B (en) | 2020-10-23 | 2020-10-23 | Magnetic power generation anti-disassembly self-destruction device for vehicle-mounted unit |
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| CN112277875B (en) | 2022-02-22 |
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