CN215042593U

CN215042593U - Device for preventing automobile electronic license plate mark from being disassembled

Info

Publication number: CN215042593U
Application number: CN202121595756.7U
Authority: CN
Inventors: 牟乃清; 陈颜; 刘兴
Original assignee: Sichuan Big Data Investment Co ltd
Current assignee: Sichuan Big Data Investment Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-12-07
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a car electron license plate sign prevents dismouting is put, including the casing, set up in controller in the casing set up in the casing and all with radio frequency identification circuit, voltage stabilizing circuit that the controller links to each other, prevent tearing open circuit, alarm, wireless communication module, set up in the casing and with the supply circuit that voltage stabilizing circuit links to each other, and attached in the type FPC that prevents tearing open of casing surface, wherein, the casing is equipped with the trompil, prevent tearing open type FPC and pass the trompil with prevent tearing open the circuit and be linked together, radio frequency identification circuit and electron license plate sign wireless connection, wireless communication module and external terminal connection. The utility model discloses a radio frequency identification circuit, prevent tearing open the circuit, prevent tearing open type FPC, supply circuit, voltage stabilizing circuit's design to and alarm and wireless communication module's setting, realized non-contact discernment, and the discernment precision is high, device itself can prevent to remove, has effectively prevented that the electronic license plate sign from being demolishd.

Description

Device for preventing automobile electronic license plate mark from being disassembled

Technical Field

The utility model belongs to the technical field of the electron sign is prevented tearing open, specifically says, relates to a car electron license plate sign is prevented dismouting and is put.

Background

The electronic automobile license plate mark is a vehicle electronic identity card formed by combining a daily automobile license plate with an RFID technology, not only exists for tracing violation of regulations, but also has a plurality of possibilities which bring convenience to our lives, is an important tool for electronic management of automobile identities, realizes classified collection, accurate collection, mass collection and dynamic collection of vehicle traffic information, grasps the key problem of a collection source of an intelligent traffic application system, is the basis for constructing an intelligent traffic application system, is taken as an important information carrier, can bring serious consequences to an automobile owner if being dismantled and stolen, and can also seriously influence traffic management if the automobile owner is dismantled privately.

At present, the electronic license plate mark of an automobile is not provided with a dismounting-proof device generally, or the precision of the dismounting-proof device is not high, so that the situation of misjudgment is easy to occur, and on the other hand, the dismounting-proof device is still easy to dismount or move.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned not enough among the prior art, the utility model provides a non-contact automatic identification, and the discernment precision is high, and the device itself can prevent the automobile electron license plate sign dismouting device of removing.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a car electron license plate sign prevents dismouting is put, includes the casing, set up in controller in the casing, set up in the casing and all with radio frequency identification circuit, voltage stabilizing circuit, the circuit of preventing tearing open, alarm, wireless communication module that the controller links to each other, set up in the casing and with the supply circuit that voltage stabilizing circuit links to each other, and attached in the type FPC that prevents tearing open of casing surface, wherein, the casing is equipped with the trompil, prevent tearing open type FPC and pass the trompil with prevent tearing open the circuit and be linked together, radio frequency identification circuit and electron license plate sign wireless connection, wireless communication module and external terminal connection.

Further, the radio frequency identification circuit includes a radio frequency chip U1 with model number CR95HF, a resistor R1 with one end connected to the 21 st pin of the radio frequency chip U1 and the other end connected to VCC, a resistor R2 with one end connected to the 19 th pin of the radio frequency chip U1 and the other end connected to ground, a resistor R3 with one end connected to the 20 th pin of the radio frequency chip U1 and the other end connected to ground, a resistor R4 with one end connected to the 12 th pin of the radio frequency chip U1 and the other end connected to VCC, a resistor R5 with one end connected to the 14 th pin of the radio frequency chip U1 and the other end connected to VCC, a capacitor C1 with one end connected to the 29 th pin of the radio frequency chip U1 and the other end connected to ground, a capacitor C2 with one end connected to the 30 th pin of the radio frequency chip U1 and the other end connected to ground, a capacitor C3 and a capacitor C4 with one end connected to the 32 th pin of the radio frequency chip U1 and the other end connected to ground, a capacitor C5 with the 9 th pin of the radio frequency chip U1 and the other end connected to ground, the radio frequency chip comprises a crystal oscillator X1 and an antenna ANT, wherein one end of the crystal oscillator X1 is connected with a 29 th pin of the radio frequency chip U1, the other end of the crystal oscillator X1 is connected with a 30 th pin of the radio frequency chip U1, the antenna ANT is connected with 1 st, 2 nd, 5 th and 6 th pins of the radio frequency chip U1, and the 15 th, 16 th, 17 th and 18 th pins of the radio frequency chip U1 are connected with the controller.

Further, the power supply circuit comprises a power conversion chip U2 with the model of TD1501, a capacitor C6 with one end connected with the pin of U2 VIN of the power conversion chip and the other end grounded, a diode D1 with the negative electrode connected with the pin of U2 VOUT and the positive electrode grounded, a capacitor C7 with one end connected with the pin of U2 FD and the other end grounded, and an inductor L1 with one end connected with the pin of U2 FD and the other end connected with the pin of U2 VOUT.

Further, the voltage stabilizing circuit comprises a voltage stabilizing chip U3 with the model of LM1117, a capacitor C8 and a capacitor C9, wherein one end of the capacitor C8 is connected with a pin of the voltage stabilizing chip U3 VIN, the other end of the capacitor C9 is grounded, one end of the capacitor C10 and one end of the capacitor C11 are connected with a pin of the voltage stabilizing chip U3VOUT, and the other end of the capacitor C11 is grounded.

Further, the anti-disassembly circuit comprises a triode Q1, a resistor R6 with one end connected with the base of the triode Q1 and the other end connected with the collector of the triode Q1, and a resistor R7 with one end connected with the emitter of the triode Q1, wherein the other end of the resistor R7 is grounded and connected with one output end of the anti-disassembly FPC, the other output end of the anti-disassembly FPC is connected with the base of the triode Q1, and the collector of the triode Q1 is connected with a power supply VCC.

Furthermore, the anti-disassembly FPC comprises a film, copper wires attached to the film, a plug connector connected with the copper wires, and adhesive layers arranged on the front surface and the back surface of the film, wherein the film is tightly adhered to the shell through the adhesive layer on one surface, the film is tightly adhered to the shell mounting surface through the adhesive layer on the other surface, and the plug connector penetrates through the opening to be communicated with the anti-disassembly circuit.

Further, the alarm is a high-pitch alarm.

Further, the wireless communication module is an NB-IOT module.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a radio frequency identification transceiver circuit reads the information of electron license plate sign, simultaneously through the distance that sets up the discernment, when electron license plate sign is demolishd and is removed outside the discernment distance, radio frequency transceiver chip can feedback signal to the controller, controller send instruction sends the alarm sound for the alarm, the simultaneous control ware passes through wireless communication module send signal to the terminal and tells electron license plate sign to be removed, through non-contact automatic identification, effectively prevented that electron license plate sign from being demolishd.

(2) The utility model discloses radio frequency identification transceiver circuit adopts radio frequency chip CR-95HF, and discernment is accurate and the precision is high.

(3) The utility model discloses a set up supply circuit and voltage stabilizing circuit and optimize the power, provide more stable higher quality power supply to controller and radio frequency identification circuit, further improved radio frequency signal identification stability and precision.

(4) The utility model discloses a set up and prevent tearing open circuit and prevent tearing open type FPC, when removing and demolish and prevent tearing open the device, prevent tearing open type FPC's film and tear, the copper line disconnection on the film prevents tearing open circuit signaling and gives the controller, and controller send instruction sends the alarm sound for the alarm, and the while control ware passes through wireless communication module signaling to terminal to prevent that the device of preventing tearing open is removed by the removal.

(5) The utility model discloses a set up the high pitch alarm, send high frequency alarm sound, can effectively remind and fright and demolish the action.

(6) The utility model discloses an adopt NB-IOT module and thing networking connection, can be in real time with demolising information transmission and give appointed terminal.

Drawings

Fig. 1 is a schematic diagram of the control principle of the present invention.

Fig. 2 is an installation schematic diagram of the present invention.

Fig. 3 is a schematic diagram of the rfid circuit of the present invention.

Fig. 4 is a schematic diagram of the power supply circuit of the present invention.

Fig. 5 is a schematic diagram of a voltage stabilizing circuit according to the present invention.

Fig. 6 is a schematic diagram of the anti-tamper circuit of the present invention.

Fig. 7 is a schematic structural diagram of the anti-detachment FPC of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

the electronic license plate comprises a shell 1, a controller 2, a radio frequency identification circuit 3, a voltage stabilizing circuit 4, a power supply circuit 5, a disassembly preventing circuit 6, a disassembly preventing FPC7, an alarm 8, a wireless communication module 9, an electronic license plate identifier 10, a film 11, a copper wire 12, a plug 13 and a glue coating layer 14.

Detailed Description

The present invention will be further described with reference to the following drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples.

Examples

As shown in fig. 1 to 7, the present invention comprises a housing 1, a controller 2, a radio frequency identification Circuit 3, a voltage stabilizing Circuit 4, a tamper-proof Circuit 6, an alarm 8, a wireless communication module 9, a power supply Circuit 5, a tamper-proof FPC7, wherein the tamper-proof FPC7 is a Flexible Circuit film, the FPC is a short for english Flexible Printed Circuit, and is formed by embedding a Circuit design on a Flexible thin plastic sheet to form a Flexible Circuit, the Circuit has high wiring density, light weight, small size, good heat dissipation and convenient installation, and is an advanced interconnection technology, the present invention combines the characteristic that the FPC can make a Circuit on the film, and designs the tamper-proof FPC7, in this embodiment, the controller adopts a conventional STM32F103, and combines the setting of the radio frequency identification Circuit 3 and the controller 2, and sets the identification distance of the electronic license plate 10 to be no more than 1 meter, the electronic license plate mark 10 is arranged on a front windshield, the anti-dismantling device is correspondingly arranged within one meter away from the electronic license plate mark 10, the anti-dismantling device is firmly adhered to the instrument table board through an adhesive coating layer 14 of an anti-dismantling FPC, the anti-dismantling device is started for the first time, after the radio frequency identification circuit 3 reads the electronic license plate mark 10, information is fed back to a terminal through a controller 2 and a wireless communication module 9 for identity confirmation, the electronic license plate mark 10 is ensured to belong to the vehicle, after the identity confirmation is completed, the radio frequency identification circuit 3 can read the information of the electronic license plate mark 10 at regular time, the interval time can be set to three seconds, when the electronic license plate mark 10 is removed, the radio frequency identification circuit 3 feeds back a signal to the controller 2, the controller 2 sends an instruction to an alarm 8 to give an alarm sound, and meanwhile, the controller 2 sends a signal to the terminal through the wireless communication module 9 to inform that the electronic license plate mark 10 is removed, thereby effectively preventing the electronic license plate identifier 10 from being removed.

In this embodiment, the rfid circuit 3 includes a rf chip U1 of model CR95HF, a resistor R1 having one end connected to the 21 st pin of the rf chip U1 and the other end connected to VCC, a resistor R2 having one end connected to the 19 th pin of the rf chip U1 and the other end connected to ground, a resistor R3 having one end connected to the 20 th pin of the rf chip U1 and the other end connected to ground, a resistor R4 having one end connected to the 12 th pin of the rf chip U1 and the other end connected to VCC, a resistor R5 having one end connected to the 14 th pin of the rf chip U1 and the other end connected to VCC, a capacitor C1 having one end connected to the 29 th pin of the rf chip U1 and the other end connected to ground, a capacitor C2 having one end connected to the 30 th pin of the rf chip U1 and the other end connected to ground, a capacitor C3 and a capacitor C4 having one end connected to the 32 th pin of the rf chip U1 and the other end connected to ground, a capacitor C5 having one end connected to the 9 th pin of the rf chip U1 and the other end connected to the first pin of the rf chip U639 and the rf chip U1 The radio frequency identification circuit comprises an X1 and an antenna ANT connected with

pins

1, 2, 5 and 6 of a radio frequency chip U1, wherein

pins

15, 16, 17 and 18 of the radio frequency chip U1 are connected with the controller 2, information of the electronic license plate identifier 10 is read by transmitting signals through the antenna, and information from the electronic license plate identifier 10 is received through the antenna, so that whether the electronic license plate identifier 10 is removed or not is judged.

In this embodiment, the power supply circuit 5 includes a power conversion chip U2 with model TD1501, a capacitor C6 with one end connected to the pin U2 VIN of the power conversion chip and the other end grounded, a diode D1 with a negative electrode connected to the pin U2 VOUT of the power conversion chip and a positive electrode grounded, a capacitor C7 with one end connected to the pin U2 FD of the power conversion chip and the other end grounded, and an inductor L1 with one end connected to the pin U2 FD of the power conversion chip and the other end connected to the pin VOUT of the power conversion chip U2, and can use a battery for input power or take electricity from an automobile, and output 5V voltage through power conversion of the model TD 1501.

In this embodiment, voltage regulator circuit 4 includes model LM1117 regulator chip U3, the electric capacity C8 that one end links to each other with regulator chip U3 VIN pin and the other end ground connection, electric capacity C9, and the electric capacity C10 that one end links to each other with regulator chip U3VOUT pin and the other end ground connection, electric capacity C11, convert the 5V voltage that power supply circuit output into 3.3V voltage through this voltage regulator circuit, thereby to controller 2, radio frequency identification circuit 3, prevent tearing open circuit 6, alarm 8, wireless communication module 9 carries out stable power supply.

In this embodiment, the tamper circuit 6 includes a triode Q1, a resistor R6 having one end connected to the base of the triode Q1 and the other end connected to the collector of the transistor Q1, and a resistor R7 having one end connected to the emitter of the triode Q1, wherein the other end of the resistor R7 is grounded and connected to one output terminal of the tamper FPC7, the other output terminal of the tamper FPC7 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to the VCC, when the copper wire of the tamper FPC7 is disconnected, the transistor Q1 is turned off, the output terminal sends a low level signal to the controller 2, the controller 2 sends an instruction to the alarm 8 to send an alarm sound, and the controller 2 sends a signal to the terminal through the wireless communication module 9, thereby preventing the tamper from being removed.

In this embodiment, prevent tearing type FPC7 includes film 11, adhere to copper line 12 on the film, connect the bayonet joint 13 of copper line, and set up in the rubber coating 14 of film tow sides, wherein, film 11 closely bonds with casing 1 through one side rubber coating 14, film 11 closely bonds through the rubber coating 14 and the casing 1 arrangement surface of another side, bayonet joint 13 passes casing 1 trompil and prevents tearing circuit 6 and be linked together, when demolising and prevent tearing the device open, the flexible circuit film can tear, the copper line can break off, for further increase easy tearing degree, set up the tearing notch on the film.

In this embodiment, the alarm 8 is a high-pitch alarm, which can effectively remind and deter the removal behavior.

In the embodiment, the NB-IOT module is connected with the Internet of things, so that the dismantling information can be sent to the designated terminal in real time.

The utility model discloses during the use, electron license plate sign 10 perhaps prevents that tear-open rig is removed by the removal, and controller 2 all can send the instruction and send the chimes of doom for alarm 8, simultaneously through wireless communication module 9 with signal transmission terminal, can real-time supervision electron license plate sign 10 with prevent that tear-open rig is removed and is removed. In this embodiment, the connection between the alarm 8 and the wireless communication module 9 and the controller 2 belongs to the prior art, and can be realized through conventional hardware design, and the specific circuit structure thereof is not repeated in this embodiment, and the control of the controller 2 over the radio frequency identification circuit 3, the anti-detachment circuit 6, the alarm 8 and the wireless communication module 9 can be realized through the conventional software design, and is not repeated in this embodiment.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not a limitation to the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis should belong to the protection scope of the present invention.

Claims

1. The utility model provides a device is prevented dismouting by automotive electronics license plate sign which characterized in that: including casing (1), set up in controller (2) in casing (1), set up in casing (1) and all with radio frequency identification circuit (3), voltage stabilizing circuit (4), anti-tear open circuit (6), alarm (8), wireless communication module (9) that controller (2) link to each other, set up in casing (1) and with supply circuit (5) that voltage stabilizing circuit (4) link to each other, and attached in anti-tear open type FPC (7) of casing (1) surface, wherein, casing (1) is equipped with the trompil, anti-tear open type FPC (7) pass the trompil with prevent tearing open circuit (6) and be linked together, radio frequency identification circuit (3) and electronic license plate sign (10) wireless connection, wireless communication module (9) are connected with external terminal.

2. The device of claim 1, wherein the device comprises: the radio frequency identification circuit (3) comprises a radio frequency chip U1 with the model number CR95HF, a resistor R1 with one end connected with the 21 st pin of the radio frequency chip U1 and the other end connected with VCC, a resistor R2 with one end connected with the 19 th pin of the radio frequency chip U1 and the other end grounded, a resistor R3 with one end connected with the 20 th pin of the radio frequency chip U1 and the other end grounded, a resistor R4 with one end connected with the 12 th pin of the radio frequency chip U1 and the other end connected with VCC, a resistor R5 with one end connected with the 14 th pin of the radio frequency chip U1 and the other end connected with VCC, a capacitor C1 with one end connected with the 29 th pin of the radio frequency chip U1 and the other end grounded, a capacitor C2 with one end connected with the 30 th pin of the radio frequency chip U1 and the other end grounded, a capacitor C3 and a capacitor C4 with one end connected with the 32 th pin of the radio frequency chip U1 and the other end grounded, and a capacitor C5 with the 9 th pin of the radio frequency chip U1 and the other end grounded, the radio frequency chip comprises a crystal oscillator X1 and an antenna ANT, wherein one end of the crystal oscillator X1 is connected with a 29 th pin of the radio frequency chip U1, the other end of the crystal oscillator X1 is connected with a 30 th pin of the radio frequency chip U1, the antenna ANT is connected with 1 st, 2 nd, 5 th and 6 th pins of the radio frequency chip U1, and the 15 th, 16 th, 17 th and 18 th pins of the radio frequency chip U1 are connected with the controller (2).

3. The device of claim 1, wherein the device comprises: the power supply circuit (5) comprises a power conversion chip U2 with the model being TD1501, a capacitor C6 with one end connected with a U2 VIN pin of the power conversion chip and the other end grounded, a diode D1 with a negative electrode connected with a U2 VOUT pin of the power conversion chip and a positive electrode grounded, a capacitor C7 with one end connected with a U2 FD pin of the power conversion chip and the other end grounded, and an inductor L1 with one end connected with a U2 FD pin of the power conversion chip and the other end connected with a U2 VOUT pin of the power conversion chip.

4. The device of claim 1, wherein the device comprises: the voltage stabilizing circuit (4) comprises a voltage stabilizing chip U3 with the model of LM1117, a capacitor C8 and a capacitor C9, wherein one end of the capacitor C8 is connected with a pin of a voltage stabilizing chip U3 VIN, the other end of the capacitor C9 is grounded, one end of the capacitor C10 and one end of the capacitor C11 are connected with a pin of a voltage stabilizing chip U3VOUT, and the other end of the capacitor C10 and the other end of the capacitor C11 are grounded.

5. The device of claim 1, wherein the device comprises: prevent tearing open circuit (6) and include triode Q1, one end with triode Q1 base links to each other and the other end with resistance R6 that triode Q1 collecting electrode links to each other, and one end with resistance R7 that triode Q1 projecting pole links to each other, wherein, resistance R7 other end ground connection and with an output of preventing tearing open type FPC (7) links to each other, prevent tearing open type FPC (7) another output with triode Q1 base links to each other, triode Q1 collecting electrode connects the power VCC.

6. The device of claim 1, wherein the device comprises: the anti-disassembly FPC (7) comprises a film (11), copper wires (12) attached to the film (11), a plug connector (13) connected with the copper wires (12), and adhesive layers (14) arranged on the front side and the back side of the film (11), wherein the film (11) is tightly adhered to the shell (1) through the adhesive layers (14) on one side, the film (11) is tightly adhered to the mounting surface of the shell (1) through the adhesive layers (14) on the other side, and the plug connector (13) penetrates through the opening and is communicated with the anti-disassembly circuit (6).

7. The device of claim 1, wherein the device comprises: the alarm (8) is a high-pitch alarm.

8. The device of claim 1, wherein the device comprises: the wireless communication module (9) is an NB-IOT module.