Detaching-preventing device
An anti-disassembly, microprocessor technology, applied in the field of short-distance communication, can solve the problems of high height and miniaturization of active tags, and achieve the effects of cost reduction, simplified disassembly detection touch lever, and simple circuit
Inactive Publication Date: 2014-06-11
TIANJIN ZHONGXING SOFTWARE
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Problems solved by technology
It mainly involves the anti-disassembly scheme in the form of a micro switch. The disadvantage of this scheme is that there may be false indications, and the action stroke of the micro switch leads to a high height of the device, which makes it impossible for the active label to be miniaturized.
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[0049] Most of the existing anti-disassembly devices are set separately from the power-on device of the equipment where the anti-disassembly device is located (hereinafter referred to as equipment for convenience), and the disassembly of the equipment using pulse detection is easily disturbed by external factors such as static electricity. In addition, when the device itself is disassembled, it needs to perform operations such as sound and light display, and write disassembly information to the security module, which requires continuous power supply. There is a design that uses large capacitor energy storage to continue the power supply after the micro switch is opened. However, this method has inherent disadvantages: large power consumption, especially when the temperature is high, the leakage current will increase, which is harmful to the use of batteries, etc. Power supply equipment has great hidden dangers; in addition, capacitive energy storage may not be able to meet the ...
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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 [0001] The invention relates to the technical field of short-distance communication, in particular to an anti-disassembly device and a disassembly method. Background technique [0002] Electronic Toll Collection System (Electronic Toll Collection System, referred to as ETC system, also known as electronic toll collection system) uses Automatic Vehicle Identification (AVI) technology to complete the wireless data communication between the vehicle and the toll station for automatic vehicle identification and Regarding the exchange of charging data, the processing of charging data is carried out through the computer network to realize the full electronic charging system of non-stop automatic charging. [0003] ETC is an electronic automatic toll collection system for roads, bridges and tunnels that is being developed and promoted internationally. This technology has a long history of development in foreign countries. The electronic toll collection systems in th...
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IPC IPC(8): G07B15/06
Inventor 王立
Owner TIANJIN ZHONGXING SOFTWARE