Electronic equipment

Abstract

The utility model provides an electronic device comprising a plurality of anti-tamper switches, each of which is provided with two connecting ends; a security chip; the plurality of anti-disassembly switches are connected in sequence through respective two connecting ends to form one or more series circuits; the security chip comprises one or more tamper-proof signal receiving ports, a main control module and a plurality of voltage acquisition modules electrically connected with the main control module; the voltage measuring ends of the plurality of voltage acquisition modules are respectively connected to the two connecting ends between every two anti-disassembly switches; the one or more tamper-proof signal receiving ports are correspondingly connected to the first connecting ends of the one or more series circuits; a second connecting end of the one-path or multi-path series circuit is connected with a power supply signal or a grounding end; and the main control module is used for determining the abnormal anti-disassembly switches in the anti-disassembly switches according to the measurement results of the plurality of voltage acquisition modules.

Description

Technical Field

[0001] The utility model mainly relates to the field of electronic information, in particular to an electronic device. Background Art

[0002] Some electronic devices, such as financial POS machines, use the anti-tampering signal of the security chip to connect to some anti-tampering switches to detect whether the machine has been dismantled. Once the security chip detects that the anti-tampering signal has been triggered, an alarm will be triggered. At this time, the electronic device will lock the machine and stop the transaction. During the use of the financial POS machine, the anti-tampering switch may be disconnected due to collisions in different situations, thereby triggering an alarm. Some electrostatic discharge and line aging may also cause some components on the anti-tampering signal line to fail and trigger an alarm. Because financial POS machines are usually equipped with multiple anti-tampering switches, once the anti-tampering switch is disconnected instantly and then restored to normal connection, and the device alarm is triggered, it often takes a lot of manpower to locate the problem, and in many cases, because the problem cannot be reproduced, it can only be judged based on experience, which is not conducive to the optimization and improvement of product quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an electronic device, which can quickly and efficiently identify and locate the problem location when an equipment alarm occurs in the electronic device due to the anti-tampering signal being triggered.

[0004] In order to solve the above technical problems, the utility model provides an electronic device, characterized in that it includes: multiple anti-dismantling switches, each anti-dismantling switch has two connection ends; a security chip; the multiple anti-dismantling switches are connected in sequence through their respective two connection ends to form one or more series circuits; the security chip includes one or more anti-tampering signal receiving ports, and includes a main control module and multiple voltage acquisition modules electrically connected to the main control module; the voltage measuring ends of the multiple voltage acquisition modules are respectively connected to the two connection ends between every two anti-dismantling switches; the one or more anti-tampering signal receiving ports are correspondingly connected to the first connection end of the one or more series circuits; the second connection end of the one or more series circuits is connected to a power supply signal or a ground end; the main control module is used to determine the abnormal anti-dismantling switch among the multiple anti-dismantling switches according to the measurement results of the multiple voltage acquisition modules.

[0005] In an embodiment of the present invention, the voltage acquisition module includes an analog-to-digital conversion module.

[0006] In an embodiment of the present invention, the anti-tampering switch includes an anti-tampering structure formed based on copper wire or carbon particles.

[0007] In an embodiment of the present invention, the anti-tampering signal receiving port is connected to a pull-up resistor or a pull-down resistor.

[0008] In an embodiment of the present invention, the anti-tampering signal receiving port is connected to a pull-up resistor, and the second connection end of the one or more series circuits is connected to a ground end.

[0009] In an embodiment of the present invention, the anti-tampering signal receiving port is connected to a pull-down resistor, and the second connection end of the one or more series circuits is connected to a power supply signal.

[0010] In one embodiment of the present invention, determining the abnormal anti-dismantling switch among the multiple anti-dismantling switches according to the measurement results of the multiple voltage acquisition modules includes: determining the abnormal anti-dismantling switch among the multiple anti-dismantling switches according to the comparison results of the measurement results of the multiple voltage acquisition modules with the corresponding voltage thresholds.

[0011] In an embodiment of the present invention, the abnormal anti-dismantling switch includes an anti-dismantling switch that becomes abnormal due to vibration, collision or falling of the electronic device.

[0012] In one embodiment of the present invention, the electronic device further comprises a flash memory module electrically connected to the main control module; the flash memory module is used to receive positioning data corresponding to the abnormal anti-disassembly switch written by the main control module.

[0013] In an embodiment of the present invention, the electronic device includes a POS machine or a self-service cash register device.

[0014] Compared with the prior art, the utility model has the following advantages: the technical solution of the present application can quickly locate or eliminate whether the anti-dismantling switch is open-circuited when the alarm is triggered in the financial equipment. The solution of the present application can improve the fault analysis and problem solving efficiency of electronic equipment, thereby improving the product quality of electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are provided to provide a further understanding of the present application. They are included in and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the description serve to explain the principles of the present application.

[0016] In the attached figure:

[0017] Figure 1 It is a schematic diagram of the composition of an electronic device according to an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the composition of an electronic device according to another embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0020] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0022] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0023] It should be understood that when a component is referred to as being "on another component," "connected to another component," "coupled to another component," or "contacting another component," it may be directly on, connected to, coupled to, or contacting the other component, or there may be intervening components. In contrast, when a component is referred to as being "directly on another component," "directly connected to," "directly coupled to," or "directly contacting" another component, there are no intervening components. Similarly, when a first component is referred to as being "electrically in contact with" or "electrically coupled to" a second component, there is an electrical path between the first component and the second component that allows current to flow. The electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even without direct contact between conductive components.

[0024] An embodiment of the present application describes an electronic device.

[0025] Figure 1 Schematic diagram of the composition of an electronic device according to an embodiment of the present application. Figure 1 , the electronic device 100 includes a security chip 101 and a plurality of anti-tampering switches.

[0026] Each of the plurality of tamper-proof switches has two connection terminals. The plurality of tamper-proof switches are connected in sequence through their respective two connection terminals to form one or more series circuits. The security chip 101 includes one or more tamper-proof signal (or Tamper signal) receiving ports, and includes a main control module 102 and a plurality of voltage acquisition modules electrically connected to the main control module 102.

[0027] exist Figure 1 In the figure, an anti-tamper switch 111 (or referred to as the first anti-tamper switch 111), an anti-tamper switch 112 (or referred to as the second anti-tamper switch 112) and an anti-tamper switch 113 (or referred to as the third anti-tamper switch 113) are exemplarily indicated. The first anti-tamper switch 111, the second anti-tamper switch 112 and the third anti-tamper switch 113, for example, form a first series circuit 141. The first series circuit 141 may also include more anti-tamper switches. Figure 1 The illustrations in the figure are for example only. Figure 1 In the figure, an anti-tamper switch 121 (or a fourth anti-tamper switch 121), an anti-tamper switch 122 (or a fifth anti-tamper switch 122) and an anti-tamper switch 123 (or a sixth anti-tamper switch 123) are also exemplarily indicated. The fourth anti-tamper switch 121, the fifth anti-tamper switch 122 and the sixth anti-tamper switch 123, for example, form a second series circuit 142. The second series circuit 142 may also include more anti-tamper switches. Figure 1 The illustrations in the figure are for example only. Figure 1 In the figure, the first tamper-proof signal receiving port 151 and the second tamper-proof signal receiving port 152 are also exemplarily indicated.

[0028] The voltage measuring terminals of the multiple voltage acquisition modules are respectively connected to the two connection terminals between each two anti-tampering switches; one or more anti-tampering signal receiving ports of the security chip 101 are correspondingly connected to the first connection terminal of one or more series circuits; the second connection terminal of one or more series circuits is connected to the power supply signal or the ground terminal. The main control module 102 is used to determine the abnormal anti-tampering switch among the multiple anti-tampering switches according to the measurement results of the multiple voltage acquisition modules.

[0029] exist Figure 1 In the embodiment, the first tamper-proof signal receiving port 151 and the second tamper-proof signal receiving port 152 are respectively connected to the first connection end 141a of the first series circuit 141 and the first connection end 142a of the second series circuit 142. The second connection end 141b of the first series circuit 141 and the second connection end 142b of the second series circuit 142 are connected to the power supply signal Vbat or the ground terminal GND. Figure 1 In the figure, the first voltage acquisition module 131, the second voltage acquisition module 132, the third voltage acquisition module 133, and the fourth voltage acquisition module 134 are also exemplarily indicated. The voltage measuring end of the first voltage acquisition module 131 is connected to the two connection ends between the first anti-dismantling switch 111 and the second anti-dismantling switch 112, and the voltage measuring end of the second voltage acquisition module 132 is connected to the two connection ends between the second anti-dismantling switch 112 and the third anti-dismantling switch 113. The voltage measuring end of the third voltage acquisition module 133 is connected to the two connection ends between the fourth anti-dismantling switch 121 and the fifth anti-dismantling switch 122, and the voltage measuring end of the fourth voltage acquisition module 134 is connected to the two connection ends between the fifth anti-dismantling switch 122 and the sixth anti-dismantling switch 123. As mentioned above, the voltage measuring ends of the plurality of voltage acquisition modules are respectively connected to the two connection ends between every two anti-dismantling switches. In other words, the two connection ends between every two anti-dismantling switches are provided with corresponding voltage acquisition modules. Since the two connection ends between every two anti-dismantling switches have the same voltage, the voltage acquisition module corresponding to the two connection ends can preferably be one to save costs. It is also worth noting that since the second connection terminals 141b and 142b are connected to the power supply signal Vbat or the ground terminal GND, the voltage of the second connection terminals 141b and 142b can be directly obtained from the power supply signal Vbat or the ground terminal GND. Therefore, in a preferred embodiment, the voltage acquisition module may not correspond to the second connection terminals 141b and 142b. In other words, the second connection terminals may not need to be provided with a corresponding voltage acquisition module to achieve effective utilization of module resources.

[0030] In some embodiments, the voltage acquisition module includes an analog to digital converter (ADC) module. The anti-tamper switch includes an anti-tamper structure formed based on copper wire or carbon particles.

[0031] In some embodiments, the tamper-proof signal receiving port is connected to a pull-up resistor or a pull-down resistor. For example, the tamper-proof signal receiving port is connected to a pull-up resistor, and the second connection end of one or more series circuits is connected to the ground terminal. Alternatively, the tamper-proof signal receiving port is connected to a pull-down resistor, and the second connection end of one or more series circuits is connected to the power supply signal. The two ends of the pull-up resistor are, for example, connected to the second power supply end and the tamper-proof signal receiving port. The two ends of the pull-down resistor are respectively connected to the tamper-proof signal receiving port and the ground terminal.

[0032] In some embodiments, determining an abnormal anti-disassembly switch among multiple anti-disassembly switches according to the measurement results of multiple voltage acquisition modules includes: determining an abnormal anti-disassembly switch among multiple anti-disassembly switches according to the comparison results of the measurement results of multiple voltage acquisition modules with the corresponding voltage threshold Vth. The abnormal anti-disassembly switch includes an abnormal anti-disassembly switch due to vibration, collision or falling of the electronic device. The voltage threshold Vth is, for example, 0.5V or 1V (volt).

[0033] Figure 2 It is a schematic diagram of the composition of an electronic device according to another embodiment of the present application.

[0034] refer to Figure 2 The electronic device 200 further includes a flash memory module 211. The flash memory module 211 is electrically connected to the main control module 102; the flash memory module 211 is used to receive the positioning data corresponding to the abnormal anti-disassembly switch written by the main control module 102.

[0035] In the solution of the present application, when the electronic device vibrates, collides or falls, the anti-tampering signal may be triggered. For example, when the anti-tampering structure in a certain anti-tampering switch is subjected to a large force, the voltage difference across the anti-tampering switch may exceed the set voltage threshold. Specifically, the voltage value across the anti-tampering switch will be acquired by the corresponding voltage acquisition module and transmitted to the main control module for processing, so as to obtain the corresponding positioning data of which anti-tampering switch has an abnormality.

[0036] In some embodiments, the voltage acquisition module acquires the voltage value at both ends of the anti-dismantling switch at specific time intervals based on the voltage acquisition instruction issued by the main control module. When the voltage difference at both ends of the anti-dismantling switch exceeds the set threshold, the abnormal state of the anti-dismantling switch can be detected. The abnormal state of the anti-dismantling switch corresponds to the triggered anti-tampering signal. In some embodiments, the time point when the abnormal state of the anti-dismantling switch is detected is also recorded, thereby providing an analysis basis for analyzing the fault situation corresponding to the triggering of the anti-tampering signal.

[0037] The aforementioned positioning data may be stored in the flash memory module 211, for example. When testing or repairing the electronic device, the location of the problem can be quickly determined based on the positioning data stored in the flash memory module 211, and corresponding improvement measures can be taken.

[0038] In some embodiments, the electronic device includes a POS (Point of Sale) machine or a self-service cash register device. More specifically, the electronic device includes, for example, a financial POS machine or a self-service cash register device used in supermarkets, banks, and the like.

[0039] The electronic device of the present application can quickly locate or eliminate the possibility that the anti-dismantling switch is open-circuited when an alarm is triggered in a financial machine. The solution of the present application can improve the efficiency of fault analysis and problem solving of the electronic device, thereby improving the product quality of the electronic device.

[0040] The basic concepts have been described above. Obviously, for those skilled in the art, the above utility model disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0041] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0042] Some aspects of the present application can be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software can all be referred to as "data blocks", "modules", "engines", "units", "components" or "systems". The processor can be one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DAPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or combinations thereof. In addition, various aspects of the present application may be expressed as a computer product located in one or more computer-readable media, which includes computer-readable program code.

[0043] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more utility model embodiments, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0044] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0045] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions may be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. An electronic device, characterized in that: include: A plurality of anti-tamper switches, each anti-tamper switch having two connection terminals; Security chip; The multiple anti-tampering switches are connected in sequence through their two connection ends to form one or more series circuits; the security chip includes one or more anti-tampering signal receiving ports, and includes a main control module and multiple voltage acquisition modules electrically connected to the main control module; The voltage measuring ends of the multiple voltage acquisition modules are respectively connected to the two connection ends between each two anti-tampering switches; the one or more anti-tampering signal receiving ports are correspondingly connected to the first connection end of the one or more series circuits; the second connection end of the one or more series circuits is connected to the power supply signal or the ground end; The main control module is used to determine an abnormal anti-tampering switch among the multiple anti-tampering switches according to the measurement results of the multiple voltage acquisition modules.

2. The electronic device according to claim 1, characterized in that: The voltage acquisition module includes an analog-to-digital conversion module.

3. The electronic device according to claim 1, characterized in that: The anti-tamper switch includes an anti-tamper structure formed based on copper wire or carbon particles.

4. The electronic device according to claim 1, characterized in that: The anti-tampering signal receiving port is connected to a pull-up resistor or a pull-down resistor.

5. The electronic device according to claim 4, characterized in that: The anti-tampering signal receiving port is connected to a pull-up resistor, and the second connection end of the one or more series circuits is connected to the ground end.

6. The electronic device according to claim 4, characterized in that: The anti-tampering signal receiving port is connected to a pull-down resistor, and the second connection end of the one or more series circuits is connected to a power supply signal.

7. The electronic device according to claim 1, characterized in that: Determining the abnormal anti-dismantling switch among the multiple anti-dismantling switches according to the measurement results of the multiple voltage acquisition modules includes: determining the abnormal anti-dismantling switch among the multiple anti-dismantling switches according to the comparison results of the measurement results of the multiple voltage acquisition modules with the corresponding voltage thresholds.

8. The electronic device according to claim 7, characterized in that: The abnormal anti-disassembly switch includes an anti-disassembly switch that becomes abnormal due to vibration, collision or falling of the electronic equipment.

9. The electronic device according to claim 1, characterized in that: It also includes a flash memory module, which is electrically connected to the main control module; the flash memory module is used to receive the positioning data corresponding to the abnormal anti-disassembly switch written by the main control module.

10. The electronic device according to claim 1, characterized in that: The electronic device includes a POS machine or a self-service cash register device.

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