CN103854315A - Detaching-preventing device - Google Patents
Detaching-preventing device Download PDFInfo
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- CN103854315A CN103854315A CN201210509994.0A CN201210509994A CN103854315A CN 103854315 A CN103854315 A CN 103854315A CN 201210509994 A CN201210509994 A CN 201210509994A CN 103854315 A CN103854315 A CN 103854315A
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- dismounting
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- detaching
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Abstract
The invention discloses a detaching-preventing device and a detaching-preventing method. The detaching-preventing device comprises a microprocessor module, a gravity detection and detaching detection module, a power supply module and a power supply control module. The gravity detection and detaching detection module is used for sensing the acceleration of equipment in all dimensions and the variable quantity of the acceleration of all the dimensions is converted into an electric signal which is transmitted to the microprocessor module. The microprocessor module is used for detecting whether the variable quantity, transmitted by the gravity detection and detaching detection module, of the acceleration of the equipment on all the dimensions reaches the acceleration threshold or not. If yes, the power supply control module is controlled to cut off power to all the modules. The power supply control module is used for controlling the power supply module according to control of the microprocessor module so as to energize or deenergize all the modules. The power supply module is used for providing power for all the modules. By means of the detaching-preventing device and the detaching-preventing method, detaching misjudging can be reduced to the maximum, the condition that practical detaching is not recorded is avoided and power consumption is reduced.
Description
Technical field
The present invention relates to Near Field Communication technical field, relate in particular to a kind of anti-disassembling device and method for dismounting.
Background technology
No-stop charging system (Electronic Toll Collection System, be called for short ETC system, claim again E-payment system) utilize automatic vehicle identification (Automatic Vehicle Identification, being called for short AVI) technology completes the wireless data communication between vehicle and charge station, carry out automatic vehicle identification and the exchange about charge data, carry out the processing of charge data by Computer network, realize the full-electronic Fare Collection System of the automatic charging that do not stop.
ETC is a kind of automatic electronic charging system for highway, bridge and tunnel developing and promote of making great efforts in the world.This technology is existing longer developing history abroad, and the local networking of the E-payment system of many countries and regions such as the U.S., Europe also progressively forms scale and benefit.China, taking IC-card, magnetic card as medium, adopts manual toll collection mode Wei Zhu highway networked fee collection mode to be also subject to undoubtedly the impact of this trend.
Roadside unit (Road-Side Units is called for short RSU), is called again electronic label read/write, trackside read-write antenna, ETC antenna, roadside device, is made up of microwave antenna and read-write controller.Be arranged on antenna and corresponding opertaing device that the mobile unit on same vehicular traffic on the lane in which the drivers should pay fees door frame or on toll island column communicates.
Board units (On Board Unit, be called for short OBU), be called again electronic tag, mobile unit, be a kind of mobile identification equipment with microwave communication function and information storage function, be arranged on vehicle interior (on windshield or instrument desk) and support the equipment that utilizes Dedicated Short Range Communications, and roadside device carries out message exchange.OBU itself both can be used as independently data carrier becomes one chip electronic tag, also can, by an additional smart card read-write interface, realize data storage, processing, the access control function of expansion, and become double-chip electronic tag.Native system uses double-disk, i.e. OBU+IC card (double-interface card).
Owing to there being relation one to one between OBU and vehicle, if user exchanges OBU privately, have the possibility of the expense of underpaying, the confidence level that also can affect freeway management mechanism and carry out the Information Statistics such as vehicle flowrate, so OBU need to possess anti-disassembling function, anti-disassembling function need to have following basic function:
(1) can detect and reliably record dismounting information;
(2) after dismounting, cannot destroy the function of circuit, but can be according to the function of dismounting information screen arm's length transaction;
(3) allow the mode by activating to revise dismounting information, thereby again recover arm's length transaction function.
At present, most variations proposes the direct break-make of switch, i.e. direct power-off Anti-dismantling, or the form of utilizing the forms such as viscose glue to destroy circuit in the time of dismounting realizes Anti-dismantling.Relate generally to the Anti-dismantling scheme of microswitch form, the disadvantage of this scheme is possible occur mistake instruction, and the actuating length of microswitch causes the height of this device higher, makes active label cannot realize miniaturization.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of anti-disassembling device and Anti-dismantling method, can avoid the erroneous judgement to electronic tag dismounting.
For solving the problems of the technologies described above, a kind of anti-disassembling device of the present invention, comprising: microprocessor module, gravity detect and dismounting detection module, power module and energy supply control module, wherein:
Described gravity detects and dismounting detection module, for responding to the acceleration of place equipment in each dimension, the variable quantity of the acceleration in each dimension is converted to electric signal and sends described microprocessor module to;
Described microprocessor module, for judging that described gravity detects and whether the variable quantity of the acceleration of the equipment of dismounting detection module transmission in each dimension reaches acceleration rate threshold, if reached, controls described energy supply control module and disconnects the power supply to each module;
Described energy supply control module, for according to the control of described microprocessor module, controls power module, to be switched on or switched off the power supply to each module;
Described power module, for powering to each module.
Further, described gravity detects and dismounting detection module, comprising: power supply sorting module, acceleration transducer, analog to digital conversion sampling thief and control, interruption and serial data module, wherein:
Described power supply sorting module, nurses one's health for the power supply to described power module, for described gravity detects and dismantle the module for power supply in detection module;
Described acceleration transducer, for responding to the acceleration of described equipment in each dimension, is converted to analog electrical signal by the variable quantity of the acceleration in each dimension, sends described analog to digital conversion sampling thief to;
Described analog to digital conversion sampling thief, is converted to digital electric signal for the analog electrical signal that described acceleration transducer is transmitted;
Described control, interruption and serial data module, for producing look-at-me to described microprocessor module, send digital electric signal to described microprocessor module by serial communication interface.
Further, described gravity detects and dismounting detection module also comprises digital filter, wherein:
Described analog to digital conversion sampling thief, also for sending described digital electric signal to described digital filter;
Described digital filter, carries out filtering for the digital electric signal that described analog to digital conversion sampling thief is transmitted, and sends filtered digital electric signal to described control, interruption and serial data module.
Further, also comprise security module, wherein:
Described microprocessor module, also, for before the described energy supply control module of control disconnects the power supply of each module, writes dismounting information to described security module;
Described security module, for preserving described dismounting information.
Further, described microprocessor module, also, for after being de-energized and again powering on, reads dismounting information from described security module, forbids device start according to dismounting information.
Further, also comprise acousto-optic indicating module, wherein:
Described microprocessor module, also for before the described energy supply control module of control disconnects the power supply of each module, controls described acousto-optic indicating module and points out dismounting action to user;
Described acousto-optic indicating module, for pointing out dismounting action to user.
Further, a kind of Anti-dismantling method, comprising:
The acceleration of anti-disassembling device induction place equipment in each dimension, whether the variable quantity of the acceleration of judgment device in each dimension reaches acceleration rate threshold, if reached, disconnects the in-line power of described anti-disassembling device.
Further, the acceleration of induction place equipment in each dimension, comprising:
Respond to the acceleration of described equipment in each dimension, the variable quantity of the acceleration in each dimension is converted to analog electrical signal, and analog electrical signal is converted to digital electric signal.
Further, also comprise:
Described anti-disassembling device, disconnecting before the in-line power of described anti-disassembling device, is preserved dismounting information, and, after again being powered on, forbid described device start according to described dismounting information.
Further, also comprise:
Described anti-disassembling device, disconnecting before the in-line power of described anti-disassembling device, is pointed out dismounting action to user.
In sum, the present invention is in order at utmost to reduce dismounting erroneous judgement, avoid real dismounting and unwritten situation and reduction power consumption etc., use the acceleration of gravity detection and three axles of dismounting detection module to board units to detect, and acceleration rate threshold is set, whether differentiate electronic tag is disassembled, thereby effectively avoid the situation of mistake dismounting, and make the power pole of electronic tag low, reach microampere order, effectively avoid the loss of electric weight, anti-disassembling device of the present invention can accomplish that 1mm is with interior height, and then electronic tag can be done to obtain to miniaturization more, meet the trend of production development, to sum up, the present invention has following beneficial effect:
(1) the dismounting erroneous judgement of having avoided electronic tag to cause because of extraneous factors such as static;
(2) avoided causing writing the failure of dismounting information to security module because of power supply instability;
(3) greatly reduced the power consumption of anti-disassembling device;
(4) circuit is simple, with low cost;
(5) the effective size of control device, has simplified the contact components and parts that traditional dismounting pick-up units such as microswitch must be joined, and has simplified structural dismounting simultaneously and has detected touch pole, has reduced cost, accomplishes miniaturization.
Brief description of the drawings
Fig. 1 is the Organization Chart of the anti-disassembling device of embodiment of the present invention;
Fig. 2 is that the gravity in the anti-disassembling device of embodiment of the present invention detects and the structural drawing of dismounting detection module;
Fig. 3 is the process flow diagram of the Anti-dismantling method of embodiment of the present invention.
Embodiment
Existing anti-disassembling device, mostly divide and be arranged with the electrifying device of the equipment at anti-disassembling device place (for convenience of describing the equipment that is designated hereinafter simply as), adopt the dismounting of pulsed checkout equipment, easily be subject to the interference of extraneous factor such as static etc., thereby cause equipment itself not to be disassembled and be situation about being removed by erroneous judgement, in addition, in the time that equipment is really disassembled, carry out the demonstrations such as acousto-optic due to needs, and write the operations such as dismounting information to security module, need power supply continuously, original design is the power supply adopting after large capacitance energy storage continuity microswitch flicks, but, this mode has inborn disadvantage: power consumption is large, especially in the situation that temperature is high, leakage current can become large, the equipment that uses the power supplies such as battery is had to great hidden danger, in addition, capacitance energy storage not necessarily can meet the operation of acousto-optic instruction and security module, so that occurs that equipment is removed and unwritten situation.
The anti-disassembling device of present embodiment comprises: microprocessor module, gravity detect and dismounting detection module, power module, security module, acousto-optic indicating module and energy supply control module.Power module is whole device power supply, and meanwhile, power module is controlled by energy supply control module, and energy supply control module is controlled by microprocessor module, and microprocessor module is also controlled security module and acousto-optic indicating module.
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the combination in any mutually of the feature in embodiment and embodiment in the application.
As shown in Figure 1, the anti-disassembling device of present embodiment comprises: microprocessor module, gravity detect and dismounting detection module, power module, security module, acousto-optic indicating module and energy supply control module, this device can be widely used in the equipment that needs Anti-dismantling detection, for example,, in ETC system and ambiguous path recognition system.
Microprocessor module is the High Performance SCM with stronger calculation process ability, detect in real time gravity by interrupt mode and detect and dismantle the signal of detection module, judge that gravity detects and whether the variable quantity of the acceleration of the equipment of dismounting detection module transmission in each dimension reaches acceleration rate threshold, with the break-make of control device power supply, microprocessor module detects and dismantles the signal of detection module according to gravity, dismounting information is write to security module and store, microprocessor module also can be controlled acousto-optic indicating module and point out accordingly.
Security module is the safety control module based on the key algorithm such as 3DES, RSA, for communication data is encrypted and decryption processing, and dismounting information is stored.Physical form can be ESAM(embedded safe control module) card.
The sound indicating section of acousto-optic indicating module is made up of hummer and driving circuit, by duty and the command operation result of the mode indicating equipment of sound, light indicating section is made up of the pilot lamp of different colours (as red green etc.), be used to refer to duty and the command operation result of equipment, display section is made up of OLED or LCD and driving circuit.For example: in the time that equipment is removed, red alarm lamp will glittering 1 second time, and hummer sends buzzing simultaneously, and in the time that equipment powers on again, the red light of equipment lights prompt facility and removes, and LCD shows the printed words of " equipment Removal " simultaneously.
Power module, by power pack (as battery, DC source etc.) and classification power control circuit composition, is used for to each circuit module power supply.
Energy supply control module is in the time that equipment is started working, the function that device is powered on is opened, when energy supply control module after equipment dismounting can reliable and stable the power supply supply of holdout device, wait until to the power supply of the whole plate that breaks again after security module writes dismounting information and carries out corresponding prompting.
Gravity detects and dismounting detection module, by the acceleration situation on acceleration transducer sensing apparatus three axles, the variable quantity of the acceleration by equipment in each dimension is converted to electric signal and sends microprocessor module to, and whether microprocessor module can judgment means be disassembled.
As shown in Figure 2, the gravity in present embodiment detects and dismounting detection module, comprising: power supply sorting module, acceleration transducer, ADC sampling thief, digital filter and control, interruption and serial data module.
Power supply sorting module is by the operable stable power supply of power supply conditioning cost module of device.
Acceleration transducer is responsible for the acceleration change of sensing apparatus in three dimensions changing value is converted to electric signal;
ADC sampling thief just analog electrical signal is converted to digital electric signal;
Digital filter carries out filtering processing to digital electric signal, avoids interference;
Control, interruption and serial data module externally produce look-at-me, by serial communication interface, communicate by letter with microprocessor module, send digital electric signal to microprocessor module.
When after user's detaching equipment, even if erecting equipment again, because the dismounting action of last time has had record in security module, microprocessor module is by reading the dismounting information in security module, judgment device was removed, can forbid device start, and now client can arrive relevant supervision department and again activates, equipment just can reuse, and does not destroy circuit itself.
As shown in Figure 3, the Anti-dismantling method of present embodiment, comprising:
Step 301: the gravity of anti-disassembling device detects and the acceleration of dismounting detection module induction place equipment in each dimension;
In the time that equipment is disassembled, certainly exist the acceleration change in certain dimension.
Step 302: the gravity of anti-disassembling device detects and the variable quantity of the acceleration in each dimension is converted to analog electrical signal by dismounting detection module, and analog electrical signal is converted to digital electric signal, sends the microprocessor module of anti-disassembling device to;
Step 303: microprocessor module carries out the anti-shake design of digital filtering, whether the variable quantity of the acceleration of judgment device in each dimension reaches acceleration rate threshold, if acceleration change amount reaches the acceleration rate threshold of setting, definition apparatus is removed;
Step 304: microprocessor module writes dismounting information to the security module of anti-disassembling device, and point out dismounting action to user;
Anti-disassembling device can carry out the instruction of buzzing, glittering LED lamp and on LCD, show printed words such as " equipment are removed " to client with prompting.
Step 305: the energy supply control module power cutoff supply access of microprocessor module control anti-disassembling device, anti-disassembling device in-line power disconnects, saves energy.
One of ordinary skill in the art will appreciate that all or part of step in said method can carry out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, as ROM (read-only memory), disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuit.Correspondingly, the each module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (6)
1. an anti-disassembling device, is characterized in that, comprising: microprocessor module, gravity detect and dismounting detection module, power module and energy supply control module, wherein:
Described gravity detects and dismounting detection module, for responding to the acceleration of place equipment in each dimension, the variable quantity of the acceleration in each dimension is converted to electric signal and sends described microprocessor module to;
Described microprocessor module, for judging that described gravity detects and whether the variable quantity of the acceleration of the equipment of dismounting detection module transmission in each dimension reaches acceleration rate threshold, if reached, controls described energy supply control module and disconnects the power supply to each module;
Described energy supply control module, for according to the control of described microprocessor module, controls power module, to be switched on or switched off the power supply to each module;
Described power module, for powering to each module.
2. device as claimed in claim 1, is characterized in that, described gravity detects and dismounting detection module, comprising: power supply sorting module, acceleration transducer, analog to digital conversion sampling thief and control, interruption and serial data module, wherein:
Described power supply sorting module, nurses one's health for the power supply to described power module, for described gravity detects and dismantle the module for power supply in detection module;
Described acceleration transducer, for responding to the acceleration of described equipment in each dimension, is converted to analog electrical signal by the variable quantity of the acceleration in each dimension, sends described analog to digital conversion sampling thief to;
Described analog to digital conversion sampling thief, is converted to digital electric signal for the analog electrical signal that described acceleration transducer is transmitted;
Described control, interruption and serial data module, for producing look-at-me to described microprocessor module, send digital electric signal to described microprocessor module by serial communication interface.
3. device as claimed in claim 2, is characterized in that, described gravity detects and dismounting detection module also comprises digital filter, wherein:
Described analog to digital conversion sampling thief, also for sending described digital electric signal to described digital filter;
Described digital filter, carries out filtering for the digital electric signal that described analog to digital conversion sampling thief is transmitted, and sends filtered digital electric signal to described control, interruption and serial data module.
4. device as claimed in claim 1, is characterized in that, also comprises security module, wherein:
Described microprocessor module, also, for before the described energy supply control module of control disconnects the power supply of each module, writes dismounting information to described security module;
Described security module, for preserving described dismounting information.
5. device as claimed in claim 4, is characterized in that:
Described microprocessor module, also, for after being de-energized and again powering on, reads dismounting information from described security module, forbids device start according to dismounting information.
6. device as claimed in claim 1, is characterized in that, also comprises acousto-optic indicating module, wherein:
Described microprocessor module, also for before the described energy supply control module of control disconnects the power supply of each module, controls described acousto-optic indicating module and points out dismounting action to user;
Described acousto-optic indicating module, for pointing out dismounting action to user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509994.0A CN103854315A (en) | 2012-12-04 | 2012-12-04 | Detaching-preventing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509994.0A CN103854315A (en) | 2012-12-04 | 2012-12-04 | Detaching-preventing device |
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| CN103854315A true CN103854315A (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210509994.0A Pending CN103854315A (en) | 2012-12-04 | 2012-12-04 | Detaching-preventing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241759A (en) * | 2017-06-28 | 2017-10-10 | 上海斐讯数据通信技术有限公司 | A kind of method and system for monitoring radio reception device position |
| CN107315118A (en) * | 2016-04-27 | 2017-11-03 | 敦盛（上海）物联网科技合伙企业（有限合伙） | A kind of mobile unit condition detection method |
| CN108712637A (en) * | 2018-07-09 | 2018-10-26 | 保山市质量技术监督综合检测中心 | A kind of equipment management system |
| CN109934943A (en) * | 2017-12-19 | 2019-06-25 | 北京聚利科技股份有限公司 | The method and apparatus for reducing OBU power consumption |
| CN114124751A (en) * | 2022-01-26 | 2022-03-01 | 湖南航天捷诚电子装备有限责任公司 | Anti-disassembly detection protection device and method and data exchange equipment |
-
2012
- 2012-12-04 CN CN201210509994.0A patent/CN103854315A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315118A (en) * | 2016-04-27 | 2017-11-03 | 敦盛（上海）物联网科技合伙企业（有限合伙） | A kind of mobile unit condition detection method |
| CN107241759A (en) * | 2017-06-28 | 2017-10-10 | 上海斐讯数据通信技术有限公司 | A kind of method and system for monitoring radio reception device position |
| CN109934943A (en) * | 2017-12-19 | 2019-06-25 | 北京聚利科技股份有限公司 | The method and apparatus for reducing OBU power consumption |
| CN108712637A (en) * | 2018-07-09 | 2018-10-26 | 保山市质量技术监督综合检测中心 | A kind of equipment management system |
| CN114124751A (en) * | 2022-01-26 | 2022-03-01 | 湖南航天捷诚电子装备有限责任公司 | Anti-disassembly detection protection device and method and data exchange equipment |
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Application publication date: 20140611 |