阅读说明：本技术 汽车钥匙盒自毁装置和方法 (Self-destruction device and method for automobile key box ) 是由 张汶翔 于 2019-11-28 设计创作，主要内容包括：本发明属于汽车安全技术领域,具体涉及汽车钥匙盒自毁装置,包括安全外壳、触发机构和自毁单元,触发机构包括弱电模块,自毁单元包括安全检测模块和自毁电路,安全检测模块与弱电模块电性连接,自毁电路电性连接安全检测模块,自毁电路连接钥匙控制电路。本发明还提供了上述装置的实现自毁的方法,本发明设置有弱电模块、触发机构和自毁单元,弱电模块对汽车钥匙盒内部的元器件实现全面的包裹保护,在遭受损坏时无需通过汽车钥匙盒中的控制芯片实现自毁功能,如此保证自毁功能的实现不受控制芯片或其它部件影响,提高自毁装置可靠性,从而提高汽车钥匙盒中控制芯片客户储存信息的隐秘性,进一步保证汽车的防盗性进一步保证汽车的防盗性。(The invention belongs to the technical field of automobile safety, and particularly relates to an automobile key box self-destruction device which comprises a safety shell, a trigger mechanism and a self-destruction unit, wherein the trigger mechanism comprises a weak current module, the self-destruction unit comprises a safety detection module and a self-destruction circuit, the safety detection module is electrically connected with the weak current module, the self-destruction circuit is electrically connected with the safety detection module, and the self-destruction circuit is connected with a key control circuit.)

1. The self-destruction device of the automobile key box is characterized by comprising a safety shell, a trigger mechanism and a self-destruction unit,

the safety shell comprises a base and an upper cover, the upper cover is clamped on the base, an installation space is formed between the clamping cover and the base, a circuit board is laid on the base, the trigger mechanism and the self-destruction unit are arranged in the installation space, elements in the automobile key box are arranged in the installation space,

the triggering mechanism comprises a weak current module, the weak current module comprises th weak current circuit and a second weak current circuit, the th weak current circuit is embedded in the cover body of the upper cover, the second weak current module is arranged on the circuit board, the th weak current module is electrically connected with the second weak current module, the th weak current circuit and the second weak current circuit jointly wrap elements in the automobile key box,

the self-destruction unit comprises a safety detection module and a self-destruction circuit, the safety detection module is electrically connected with the weak current module, the self-destruction circuit is electrically connected with the safety detection module, and the self-destruction circuit is connected with the key control circuit.

2. The car key box self-destruct device of claim 1, wherein the conductive paths of the th weak current circuit and the second weak current circuit are both dragon-threaded, the th weak current circuit is integrally formed with the upper housing , and the second weak current circuit is printed on the circuit board.

3. The car key box destruct device of claim 1, wherein the trigger mechanism further comprises a safety connector through which the th weak current circuit and the second weak current circuit are connected.

4. The self-destruction device of an automobile key box according to claim 1, wherein the self-destruction circuit comprises a power supply battery and a voltage boosting circuit, the power supply battery is electrically connected with the safety detection module, and the voltage boosting circuit is electrically connected with the power supply battery and the key control circuit respectively.

5. The car key box self-destruction device of claim 4, wherein the key control circuit comprises an LF antenna and a battery circuit, and the LF antenna and the battery circuit are both electrically connected to the boost circuit.

6. A self-destruction method of a key box, based on the self-destruction device of the automobile key box of any in claims 1-5, characterized by comprising the following steps:

s1, the weak current circuit or the second weak current circuit is damaged, the weak current module sends out a damaged signal, and the damaged signal is that the weak current circuit or the second weak current circuit is in an open state;

s2, in the safety state, the safety detection module outputs a low level, and when the damage signal in step S1 is received by the safety detection module, the safety detection module outputs a high level, that is, the safety detection module sends out a self-destruction signal;

s3, the self-destruction signal in the step S2 is received by a self-destruction circuit, the self-destruction circuit sends out a self-destruction instruction, and the self-destruction instruction is a boosting instruction sent out by a boosting circuit and a power supply battery;

and S4, the self-destruction instruction in the step S3 is received by a key control circuit, the voltage of the key control circuit is increased to 12V, the LF antenna and the battery circuit are both burnt, and the self-destruction of the automobile key box is realized.

Technical Field

The invention belongs to the technical field of automobile safety, and particularly relates to an automobile key box self-destruction device and method.

Background

The vehicle-mounted key box has the functions of vehicle lock control, starting control, trunk lid opening and the like, various functions of the vehicle-mounted key box are mainly realized by a built-in control circuit board, the vehicle-mounted key box comprises the control circuit board and a built-in battery, the built-in battery is electrically connected with the control circuit board, a control chip and a wireless signal transmitting device are arranged on the control circuit board through a circuit board printing process, the built-in battery supplies power to the control circuit board, a control button arranged on a vehicle key sends a control signal to the control chip, and the control chip controls the wireless signal transmitting device to send a control instruction to a vehicle according to the control signal so as to realize the purpose of controlling the vehicle, common control chips also can store fingerprint information and facial information of customers.

Disclosure of Invention

The invention provides a self-destruction device of an automobile key box, aiming at solving the technical problems that a burglar arbitrarily steals private information of a control chip in the automobile key box and arbitrarily starts a vehicle after an automobile anti-theft device, namely a buzzer, loses action. Correspondingly, the invention also provides a self-destruction method of the automobile key box.

The self-destruction device of the automobile key box comprises a safety shell, a trigger mechanism and a self-destruction unit,

the safety shell comprises a base and an upper cover, the upper cover is clamped on the base, an installation space is formed between the clamping cover and the base, a circuit board is laid on the base, the trigger mechanism and the self-destruction unit are arranged in the installation space, elements in the automobile key box are arranged in the installation space,

the triggering mechanism comprises a weak current module, the weak current module comprises th weak current circuit and a second weak current circuit, the th weak current circuit is embedded in the cover body of the upper cover, the second weak current module is arranged on the circuit board, the th weak current module is electrically connected with the second weak current module, the th weak current circuit and the second weak current circuit jointly wrap elements in the automobile key box,

the self-destruction unit comprises a safety detection module and a self-destruction circuit, the safety detection module is electrically connected with the weak current module, the self-destruction circuit is electrically connected with the safety detection module, and the self-destruction circuit is connected with the key control circuit.

In some embodiments, the conductive paths of the th weak current circuit and the second weak current circuit are each dragon-striped, the th weak current circuit is integrally formed with the upper housing , and the second weak current circuit is printed on the circuit board.

In some embodiments, the trigger mechanism further comprises a safety connector through which the th weak current circuit and the second weak current circuit are connected.

In some embodiments, the self-destruction circuit includes a power supply battery and a voltage boost circuit, the power supply battery is electrically connected to the safety detection module, and the voltage boost circuit is electrically connected to the power supply battery and the key control circuit, respectively.

In some embodiments, the key control circuit includes an LF antenna and a battery circuit, both the LF antenna and the battery circuit being electrically connected to the boost circuit.

The invention also provides a key box self-destruction method, which is based on the self-destruction method of the automobile key box self-destruction device and comprises the following steps:

s1, the weak current circuit or the second weak current circuit is damaged, the weak current module sends out a damaged signal, and the damaged signal is that the weak current circuit or the second weak current circuit is in an open state;

s2, in the safety state, the safety detection module outputs a low level, and when the damage signal in step S1 is received by the safety detection module, the safety detection module outputs a high level, that is, the safety detection module sends out a self-destruction signal;

s3, the self-destruction signal in the step S2 is received by a self-destruction circuit, the self-destruction circuit sends out a self-destruction instruction, and the self-destruction instruction is a boosting instruction sent out by a boosting circuit and a power supply battery;

and S4, the self-destruction instruction in the step S3 is received by a key control circuit, the voltage of the key control circuit is increased to 12V, the LF antenna and the battery circuit are both burnt, and the self-destruction of the automobile key box is realized.

The key box self-destruction device has the advantages that the key box self-destruction device is provided with the weak current module, the trigger mechanism and the self-destruction unit, the weak current module achieves comprehensive package protection on components inside the automobile key box, the self-destruction function is achieved without a control chip in the automobile key box when the components are damaged, the self-destruction function is guaranteed to be not affected by the control chip or other parts, the self-destruction device is prevented from being invalid due to the fact that the automobile key box is halted and shut down, the reliability of the self-destruction device is improved, accordingly, the secrecy of information stored by a control chip client in the automobile key box is improved, and the theft prevention performance of an automobile is guaranteed in steps.

Drawings

FIG. 1 is a schematic perspective view of a key case for a vehicle according to the present invention;

FIG. 2 is a schematic perspective view of the upper housing of the present invention;

FIG. 3 is a schematic view of the internal structure of the car key box of the present invention;

FIG. 4 is a schematic diagram of the circuit board of the car key box of the present invention;

FIG. 5 is a schematic diagram of a dragon-striped conductive path of an th weak current circuit and a second weak current circuit of the present invention;

FIG. 6 is a flow chart of a self-destruction method of the car key box of the present invention;

fig. 7 is a structural block diagram of the self-destruction device of the car key box of the invention.

Detailed Description

In order to make the objects, aspects and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings of fig. 1-7.

The invention provides a self-destruction device of an automobile key box, which has the following specific technical scheme:

a self-destruction device of an automobile KEY box comprises a safety shell, a trigger mechanism and a self-destruction unit, wherein the safety shell 3 comprises a base 32 and an upper cover 31, the upper cover 31 is clamped on the base 32, an installation space is formed between the upper cover 31 and the base 32, a circuit board 4 is laid on the base 32, the trigger mechanism and the self-destruction unit 2 are arranged in the installation space, and elements in the automobile KEY box are arranged in the installation space.

In some embodiments, the conductive paths of the th weak current circuit 11 and the second weak current circuit 12 are arranged in a dragon-grain shape (as shown in fig. 4), the th weak current circuit 11 is integrally formed with the upper cover 31 , the second weak current circuit 12 is printed on the circuit board 4, the th weak current circuit 11 is integrally formed with the upper cover 31 through an injection molding process, and accordingly, a five-sided cover structure is formed, and a six-sided cover structure is formed with the second weak current circuit 12.

In some embodiments, the triggering mechanism further comprises a safe connector 13, wherein the th weak current circuit 11 and the second weak current circuit 12 are connected through the safe connector 13, and the model of the safe connector 13 is Shenzhen meta-rising PG1.5-5p-2.54 PH-7.5H.

In some embodiments, the self-destruction circuit 22 includes a power supply battery 221 and a voltage boost circuit 222, the power supply battery 221 is electrically connected to the safety detection module 21, and the voltage boost circuit 222 is electrically connected to the power supply battery 221 and the key control circuit 23, respectively. The power supply battery 221 is a long-life high-temperature battery, and at least reserves electric energy with a preset proportion for the self-destruction circuit 22 to use.

In some embodiments, the key control circuit 23 includes an LF antenna 231 and a battery circuit 232, and both the LF antenna 231 and the battery circuit 232 are electrically connected to the voltage boost circuit 222.

The invention also provides a key box self-destruction method, based on the method of the automobile key box self-destruction device, when the safety outer cover of the automobile key box is damaged by external force, the th weak current circuit 11 embedded in the upper cover 31 or the second weak current circuit 12 printed on the circuit board 4 is damaged, namely the circuit of the th weak current circuit 11 or the second weak current circuit 12 is disconnected, namely a damaged signal is sent;

s2, in the safety state, the safety detection module 21 outputs a low level, and when the damage signal in step S1 is received by the safety detection module 21, the safety detection module 21 outputs a high level, that is, sends out a self-destruction signal;

s3, the self-destruction signal in step S2 is received by the self-destruction circuit 22, and the self-destruction circuit 22 issues a self-destruction instruction, which is a voltage boosting instruction issued by the voltage boosting circuit 222 and the power supply battery 221;

and S4, the self-destruction instruction in the step S3 is received by the key control circuit 23, the voltage of the key control circuit 23 is increased to 12V, the key control circuit 23 comprises an LF antenna 231 and a battery circuit 232, the LF antenna 231 and the battery circuit 232 are both burnt, and the key control circuit 23 realizes the self-destruction of the key box.

In summary, the present invention realizes the overall protection of the components in the key box of the automobile through the weak current module 1 forming the hexahedral structure, and immediately turns off the circuit of the weak current module 1 after the safety casing 3 is damaged, and then realizes the self-destruction step through the safety detection module 21, and raises the voltage to 12V through the voltage-raising circuit 222, burns out the battery circuits in the LF antenna 231 and the battery circuit 232 through the high current, and finally realizes the self-destruction of the key box without the control chip, thereby ensuring that the automobile cannot be started.

The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be construed as limiting the invention, and the present invention is not limited to the above examples, and those skilled in the art should also be able to make various changes, modifications, additions or substitutions within the spirit and scope of the present invention.