POS machine safety protection device

Abstract

The utility model provides a POS machine safety protection device, which comprises a mainboard, metal domes, a first bonding pad and a second bonding pad, the mainboard is provided with a plurality of metal domes, and the head end and the tail end of each metal dome are respectively fixed on the mainboard through the first bonding pad and the second bonding pad; the pressure sensor is positioned at the top end of the metal dome, the bottom surface of the metal dome is in contact with the pressure sensor, and the top surface of the metal dome is in contact with the anti-disassembly part of the POS machine shell; the safety detection point is embedded in the main board corresponding to the central point of the metal dome; according to the utility model, double safety protection is adopted, one is signal detection of electric signals, and the other is structure-to-electric signal detection, so that the problem that the signal detection mode of the electric signals is interfered by wireless signals, high-frequency signals, high-strength signals and the like to cause false triggering is solved; and the housing is easy to deform and is easy to attack.

Description

Technical Field

[0001] The utility model relates to a POS machine safety protection device, belonging to the field of hardware protection for POS machines. Background Art

[0002] As a financial transaction terminal, in order to prevent criminals from illegally modifying POS terminal devices to install BUGs and stealing sensitive information such as cardholders' account data and PINs, the reliability and hardware security of the POS terminal itself are crucial. Currently, in order to ensure the hardware security of POS terminal devices, a safety anti-disassembly detection switch is generally provided inside the POS terminal to detect whether the device's housing has been illegally opened. This anti-disassembly method.

[0003] Currently, the general POS anti-disassembly detection switch is to apply the housing pressure to the switch position for safety signal detection and make it conduct through the pressure. For example, the patent document with the existing application number 201611202833.1 discloses a POS safety detection switch, which reveals that the anti-disassembly conductive body includes a conductive part and a sheet-shaped conductive elastic part. One end face of the sheet-shaped elastic part is the power connection surface and the other end face is the pressure-bearing surface. The conductive part is fixed to the power connection surface of the elastic part with an insulating structure; when the anti-disassembly conductive body is installed at the anti-disassembly detection pad, the pressure-bearing surface of the elastic part contacts the anti-disassembly part of the POS machine housing, and the elastic part deforms under the pressure of the anti-disassembly part of the POS machine housing, so that the conductive part at the elastic part contacts the disassembly monitoring switch, making the disassembly monitoring switch in an untriggered state; when the pressure-bearing surface of the elastic part is in a non-pressure-bearing state, the elastic part resets and drives the conductive part to separate from the disassembly monitoring switch to trigger the disassembly monitoring switch; the present invention can strengthen the disassembly monitoring function of the POS to prevent illegal disassembly.

[0004] Aiming at the prior art, but the above solution realizes the alarm by disconnecting the safety detection signal. The safety detection signal belongs to an electrical signal and will be interfered by wireless signals, high-frequency signals, high-intensity signals, etc., resulting in false triggering; it is also prone to disadvantages such as shell deformation and easy attack.

[0005] Therefore, the utility model provides a POS machine safety protection device with dual protection of structural conversion of electrical signals and electrical signal triggering. Content of the Utility Model

[0006] In view of this, the purpose of the utility model is to provide a POS machine safety protection device with dual protection of structural conversion of electrical signals and electrical signal triggering.

[0007] The utility model is realized as follows:

[0008] A POS machine security protection device, including a main board, a dome switch, a first pad, and a second pad. A number of dome switches are arranged on the main board, and the head and tail ends of each dome switch are fixed to the main board through the first pad and the second pad respectively;

[0009] The anti-disassembly part of the POS machine housing and a pressure sensor. The pressure sensor is located at the top of the dome switch, and the bottom surface of the dome switch contacts the pressure sensor, and the top surface of the dome switch contacts the anti-disassembly part of the POS machine housing;

[0010] A safety detection point, which is embedded in the main board corresponding to the center point of the dome switch.

[0011] As a further improvement, both ends of the pressure sensor are embedded in the vias of the main board.

[0012] As a further improvement, when the dome switch and the safety detection point are in contact, the safety detection circuit is closed, the pressure of the pressure sensor is stable, and the POS machine works normally.

[0013] As a further improvement, when the dome switch and the safety detection point are separated, the safety detection circuit is disconnected, the pressure value of the pressure sensor changes, and the POS machine is illegally opened.

[0014] As a further improvement, the end face of the dome switch in contact with the safety detection point is the power connection surface, and the other end face is the pressure-bearing surface.

[0015] As a further improvement, the anti-disassembly part of the POS machine housing is a convex point.

[0016] As a further improvement, the anti-disassembly part of the POS machine housing is a pillar.

[0017] As a further improvement, the dome switch is made of a metal material.

[0018] The beneficial effects of the present utility model are:

[0019] ① The present utility model adopts double safety protections. One is the signal detection of the electrical signal, and the other is the detection of the structural converted electrical signal, which solves the problems that the signal detection method of the electrical signal is interfered by wireless signals, high-frequency signals, high-intensity signals, etc., resulting in false triggering; it is also easy to cause the deformation of the outer shell and easy to be attacked. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the principle of a POS machine safety protection device provided by an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the main board of a POS machine safety protection device provided by an embodiment of the present utility model. Specific embodiments

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0024] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0025] Referring to Figure 1 - Figure 2 As shown, this embodiment provides a specific implementation of a POS machine safety protection device, including a main board 4, a dome switch 2, a first pad 3, and a second pad 7. A plurality of dome switches 2 are arranged on the main board 4, and the head and tail ends of each dome switch 2 are respectively fixed on the main board 4 through the first pad 3 and the second pad 7;

[0026] The anti-disassembly part 1 of the POS machine housing and a pressure sensor 5. The pressure sensor 5 is located at the top of the dome switch 2, and the bottom surface of the dome switch 2 contacts the pressure sensor 5, and the top surface of the dome switch 2 contacts the anti-disassembly part 1 of the POS machine housing;

[0027] A safety detection point 6 is embedded in the main board 4 corresponding to the center point of the dome switch 2.

[0028] The present utility model no longer adopts a single detection method, but instead adopts dual safety protection. One is the signal detection method of electrical signals: the other is the detection of structural conversion into electrical signals. Specifically, when the assembly is completed, the anti-disassembly part 1 of the POS machine housing presses down on the dome switch 2 under the pressure condition of equipment locking. The dome switch 2 conducts the first pad 3 and the second pad 7 on the main board 4, and the safety detection circuit forms a closed loop, and the equipment operates normally. That is, when the dome switch 2 contacts the safety detection point 6, the safety detection circuit is closed, the pressure of the pressure sensor 5 is stable, and the pressure sensor can detect the pressure of the structural member 1 on the metal dome switch 2 under normal conditions; the POS machine operates normally.

[0029] When the equipment is illegally opened, the anti-disassembly part 1 of the POS machine housing loses the pressure on the dome switch 2, and the dome switch 2 bounces up, resulting in the disconnection of the closed circuit formed by the first pad 3, the second pad 7, and the safety detection signal 6; the security chip of the POS machine detects this signal abnormality and gives an alarm.

[0030] At the same time, the anti-disassembly part 1 of the POS machine housing loses the pressure on the dome switch 2; at this time, the pressure of the pressure sensor 5 also changes, and the security chip detects this abnormal change, indicating that there is an abnormality in the pressure of the equipment on the metal dome switch 2. Combining the above abnormal signal detection of electrical signals, the security chip reports an abnormal event; achieving the effect of protecting the sensitive information of the equipment.

[0031] It solves the problems that the signal detection method of electrical signals is interfered by wireless signals, high-frequency signals, high-intensity signals, etc., resulting in false triggering; it is also prone to shell deformation and easy to be attacked.

[0032] That is, when the dome switch 2 is separated from the safety detection point 6, the safety detection circuit is disconnected, the pressure value of the pressure sensor 5 changes, and the POS machine is illegally opened.

[0033] The safety detection circuit here refers to the circuit that triggers the safety chip or the alarm module in the POS machine.

[0034] Furthermore, both ends of the pressure sensor 5 are embedded in the vias 8 of the main board 4. When the POS machine housing is not fully assembled, the pressure sensor 5 is assembled onto the dome switch 2, and the vias 8 can play a role in positioning and fixing. After assembly, the stability of the device is improved.

[0035] As a possible specific implementation manner of the present utility model, the end face of the dome switch 2 in contact with the safety detection point 6 is the power connection surface, and the other end face is the pressure-bearing surface, so that the contact area between the deformed dome switch 2 and the safety detection point 6 is enlarged, the contact points are stable, and it is not easy to cause adverse effects.

[0036] As a possible specific implementation manner of the present utility model, the anti-disassembly part 1 of the POS machine housing is a convex point.

[0037] As a possible specific implementation manner of the present utility model, the anti-disassembly part 1 of the POS machine housing is a pillar.

[0038] The end face of the anti-disassembly part 1 of the POS machine housing has a small contact area, making it easier to accurately align with the middle position of the pressure sensor 5, and then pressing down, causing the dome sheet 2 to deform.

[0039] The above are only the preferred implementation manners of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A POS machine security protection device, characterized in that, It includes a main board (4), a dome switch (2), a first pad (3), and a second pad (7). A number of dome switches (2) are provided on the main board (4), and the head and tail ends of each dome switch (2) are respectively fixed on the main board (4) through the first pad (3) and the second pad (7). The anti-tampering part (1) of the POS machine housing and a pressure sensor (5). The pressure sensor (5) is located at the top of the dome switch (2), and the bottom surface of the dome switch (2) contacts the pressure sensor (5), and the top surface of the dome switch (2) contacts the anti-tampering part (1) of the POS machine housing. A safety detection point (6) is embedded in the main board (4) corresponding to the center point of the dome switch (2).

2. The POS machine security protection device according to claim 1, characterized in that, Both ends of the pressure sensor (5) are embedded in the via holes (8) of the main board (4).

3. The POS machine security protection device according to claim 1, characterized in that, When the dome switch (2) contacts the safety detection point (6), the safety detection circuit is closed, the pressure of the pressure sensor (5) is stable, and the POS machine works normally.

4. The POS machine security protection device according to claim 1, wherein, When the dome switch (2) is separated from the safety detection point (6), the safety detection circuit is disconnected, the pressure value of the pressure sensor (5) changes, and the POS machine is illegally opened.

5. The POS machine security protection device according to claim 1, characterized in that, The end face of the dome switch (2) in contact with the safety detection point (6) is the power connection face, and the other end face is the pressure bearing face.

6. The POS machine security protection device according to claim 1, characterized in that, The anti-tampering part (1) of the POS machine housing is a bump.

7. The POS machine security protection device according to claim 1, characterized in that, The anti-tampering part (1) of the POS machine housing is a pillar.

8. The POS machine security protection device according to claim 1, characterized in that, The dome switch (2) is made of a metal material.

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