Tamper protection card consumption machine
A consumer machine, tamper-proof technology, applied in instruments, cash registers, etc., can solve the problems of loss of tamper-proof, weak tamper-proof level, etc., and achieve the effect of high tamper-proof level and concealed tamper-proof principle.
Active Publication Date: 2015-08-05
NO 15 INST OF CHINA ELECTRONICS TECH GRP +1
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Problems solved by technology
[0002] The tamper-proof circuits on the market now generally only use hardware tamper-proof design, and the tamper-proof level is not strong. The anti-demolition design principle is simple, and it is very easy to be bypassed by the demolition personnel, losing the purpose of anti-demolition
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[0012] See attached figure 1 , 2 , a tamper-proof security card consumption machine, which includes: an upper casing, a lower casing, a central circuit board and a display screen;
[0013] The central circuit board includes: a power supply unit, an anti-demolition pressing sheet, a control chip U14 and a clock unit; the power supply unit is divided into two inputs, one is connected to the power supply, the other is connected to the button battery BT2, and the power supply is connected to the diode D11. The anode, the button battery BT2 is connected to the anode of the diode D12 one way, and the other way is grounded through the capacitor C53, the diode D11 is connected to the cathode of the diode D12, and its contact is connected to the control chip U14 through the anti-demolition pressing piece; the clock unit The two ends of the clock Y2 are grounded respectively through the capacitors C54 and C55, the resistor R42 is connected in parallel to the two ends of the clock Y2, a...
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The invention belongs to the technical field of structural designs, and particularly relates to an anti-dismantle device. The technical scheme is that under abnormal situations, an upper shell body and a lower shell body of a security card consumption machine are dismantled, an anti-dismantle preforming between the upper shell body and the lower shell body flicks and is in an off state, a power supply source cannot provide power sources for a control chip, and the time of a clock unit reverts to original time. When the upper shell body and the lower shell body of the security card consumption machine are combined tightly, the anti-dismantle preforming is in a close state, the control chip detects that the time of the clock unit is displayed abnormally, the whole system work of the security card consumption machine is stopped to be launched, and an anti-dismantle password is input according to a prompt of the display unit. The anti-dismantle security card consumption machine has the advantages of being high in anti-dismantle grade and covert in anti-dismantle principles. As long as the outer shell body of the security card consumption is dismantled, even the dismantle action happens at one moment, the dismantle action can be detected by the control chip.
Description
technical field [0001] The invention belongs to the technical field of structural design, in particular to an anti-disassembly device. Background technique [0002] Now the tamper-proof circuit on the market generally only adopts hardware tamper-proof design, and the tamper-proof level is not strong. This kind of anti-demolition design principle is simple, it is very easy to be bypassed by the demolition personnel, and the purpose of anti-demolition is lost. Contents of the invention [0003] The purpose of the present invention is to provide an anti-disassembly device to prevent potential safety hazards caused by unauthorized and illegal disassembly of equipment. [0004] The technical solution of the present invention is: an anti-disassembly security card consumption machine, which is characterized in that it includes: an upper casing, a lower casing, a central circuit board and a display screen; [0005] The central circuit board includes: a power supply unit, an anti...
Claims
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IPC IPC(8): G07G1/00
Inventor 吴歌
Owner NO 15 INST OF CHINA ELECTRONICS TECH GRP