Wireless device and financial terminal equipment

Abstract

The utility model discloses a wireless device and financial terminal equipment, the wireless device comprises a first wireless module, a second wireless module and a power supply module, the first wireless module is electrically connected with a master control system of the financial terminal equipment, and the second wireless module is used for sending wireless positioning signals in real time in a power-on state; the power supply module comprises a power supply, a control circuit and a selection circuit; the control circuit is used for controlling the selection circuit to be in a first state or a second state according to a power-on signal or a power-off signal of the financial terminal equipment; in the first state, the selection circuit gates a power supply path between the first wireless module and the power supply; and in the second state, the selection circuit gates a power supply path between the second wireless module and the power supply. According to the wireless device, through a state switching mechanism of the power supply module, the positioning signal transmitting function of the second wireless module is automatically activated after the financial terminal equipment is shut down, and continuous position monitoring of the equipment in a non-working state is achieved.

Description

Technical Field

[0001] This utility model relates to the field of wireless device monitoring technology, and in particular to a wireless device and financial terminal equipment. Background Technology

[0002] With the rapid development of the financial payment industry, POS machine technology has undergone a major transformation from traditional wired terminals to intelligent wireless terminals. Driven by wireless cellular communication technology and mobile payment scenarios, modern POS machines have generally integrated wireless communication modules and are gradually developing towards miniaturization and portability. However, while this technological evolution has improved ease of use, it has also brought new challenges to device security, especially in terms of anti-theft tracking and prevention of unauthorized tampering when the device is not in operation.

[0003] Existing technologies commonly employ a power supply scheme that links the encrypted SoC and the main control chip, using hardware encryption circuitry to protect the device from tampering. This scheme proposes sharing power with the encryption chip and the main control system, triggering a data self-destruct mechanism upon detecting physical tampering. However, this scheme has a fundamental flaw: when the POS machine is powered off, the encryption circuitry and the main control system are simultaneously powered off, causing the device to completely lose its location tracking capabilities and security protection functions. In this state, criminals can physically damage or illegally transfer the device, while manufacturers and security departments cannot obtain real-time location information, leading to difficulties in recovering assets and the leakage of sensitive data. Utility Model Content

[0004] The purpose of this invention is to provide a wireless device and a financial terminal device that can provide real-time location information in a power-off state to address the shortcomings of the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides a wireless device for financial terminal equipment, comprising a first wireless module, a second wireless module, and a power supply module. The first wireless module is electrically connected to the main control system of the financial terminal equipment and is used to provide wireless communication services to the financial terminal equipment. The second wireless module is used to transmit a wireless positioning signal in real time when powered on, the positioning signal representing the real-time location of the financial terminal equipment. The power supply module includes a power supply, a control circuit, and a selection circuit.

[0006] The control circuit is electrically connected to the main control system of the financial terminal device. The control circuit is used to control the selection circuit to be in a first state or a second state according to the power-on signal or power-off signal of the financial terminal device.

[0007] In the first state, the selection circuit selects the power path between the first wireless module and the power supply, and disconnects the power path between the second wireless module and the power supply; in the second state, the selection circuit selects the power path between the second wireless module and the power supply, and disconnects the power path between the first wireless module and the power supply.

[0008] Preferably, the selection circuit includes a multi-channel radio frequency switch, the radio frequency switch including a common power port, a first port, a second port, a common port, and a control port; the common power port is connected to the power supply.

[0009] The common port is connected to the negative terminals of the first wireless module and the second wireless module, the first port is connected to the positive terminal of the first wireless module, the second port is connected to the positive terminal of the second wireless module, the control port is electrically connected to the control circuit, and the control port is used to control one of the first port and the second port to connect to the common port according to the state of the control circuit.

[0010] Preferably, it also includes a first capacitor, one end of which is grounded and the other end of which is electrically connected to the control port.

[0011] Preferably, the common port is further provided with a first resistor.

[0012] Preferably, a second capacitor is connected in parallel at the end of the first resistor furthest from the common port, and the second capacitor is grounded.

[0013] Preferably, a third capacitor is connected in parallel at the end of the first resistor closest to the common port, and the third capacitor is grounded.

[0014] Preferably, the common power port is electrically connected to the power supply through a second resistor, and a fourth capacitor is also electrically connected to the connection point between the common power port and the second resistor, and the fourth capacitor is grounded.

[0015] Preferably, the control circuit includes a switching transistor, which includes a control electrode, a first conducting electrode, and a second conducting electrode. The control electrode is electrically connected to the main control system of the financial terminal equipment. The first conducting electrode is grounded. The second conducting electrode is electrically connected to the power supply through a third resistor. A signal acquisition point electrically connected to the selection circuit is provided between the second conducting electrode and the third resistor. The selection circuit controls the selection circuit to be in a first state or a second state according to the level state of the signal acquisition point.

[0016] Preferably, the switching transistor is an NMOS transistor.

[0017] This utility model also provides a financial terminal device, which includes a main control system and a wireless device, as described above.

[0018] Compared with the prior art, the wireless device of this utility model is equipped with a first wireless module for main communication. When the financial terminal device is in the startup state, it interacts with external devices based on the first wireless module. At this time, a second wireless communication module is also configured. Through the power supply module's state switching mechanism, the positioning signal transmission function of the second wireless module is automatically activated after the financial terminal device is powered off. This breaks through the limitation of the security function being restricted by the main system power supply in the traditional solution, and realizes continuous location monitoring of the device in the non-working state. In addition, the independent power supply mechanism of the second wireless module forms a hidden security protection layer. Even if the attacker removes the main control system power supply, the device location can still be exposed by continuously transmitting positioning signals. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the financial terminal device in an embodiment of this utility model.

[0020] Figure 2 This is a circuit diagram of the wireless device in an embodiment of this utility model. Detailed Implementation

[0021] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] This embodiment discloses a financial terminal device, which includes, but is not limited to, a POS machine. For example... Figure 1 The financial terminal equipment includes a main control system U0 and a wireless device.

[0023] The wireless device includes a first wireless module U1, a second wireless module U2, and a power supply module. The first wireless module U1 is electrically connected to the main control system U0 of the financial terminal equipment, and provides wireless communication services to the financial terminal equipment. The main control system U0 interacts with external devices based on the first wireless module U1.

[0024] The second wireless module U2 is used to transmit a wireless positioning signal in real time when powered on. The positioning signal represents the real-time location of the financial terminal device.

[0025] The external positioning device can calculate the location of the financial terminal device by processing the wireless positioning signal emitted by the second wireless module U2.

[0026] The power supply module includes a power supply VCC, a control circuit 1, and a selection circuit 2.

[0027] The control circuit 1 is electrically connected to the main control system U0 of the financial terminal equipment. The control circuit 1 is used to control the selection circuit 2 to be in the first state or the second state according to the power-on signal or power-off signal of the financial terminal equipment.

[0028] For example, when control circuit 1 detects a high level (>2.4V) output by the main control system U0 for 100ms, it determines it as a power-on signal; when it detects a low level (<0.8V) output by the main control system U0 for 5s, it determines it as a power-off signal.

[0029] In the first state, the selection circuit 2 enables the power path between the first wireless module U1 and the power supply VCC, and disconnects the power path between the second wireless module U2 and the power supply VCC; in the second state, the selection circuit 2 enables the power path between the second wireless module U2 and the power supply VCC, and disconnects the power path between the first wireless module U1 and the power supply VCC.

[0030] Specifically, the first wireless module U1 includes one or more combinations of a 4G communication module, a 5G communication module, a Bluetooth module, a WiFi module, and an infrared module. The first wireless module U1 is connected to the main control system U0 via a UART interface.

[0031] The second wireless module U2 includes any one of Bluetooth Low Energy, UWB, and GPS modules. When powered off, the second wireless module U2 transmits a location data packet containing the device ID every 30 seconds.

[0032] The power supply VCC uses a lithium polymer battery or solar panel to provide a 3.3V voltage output.

[0033] When the financial terminal equipment is powered on, the control circuit 1 sends a control signal to the selection circuit 2, and the selection circuit 2 drives the second wireless module U2 to completely power off, so that only the first wireless module U1 establishes a communication link.

[0034] When the financial terminal equipment is powered off, control circuit 1 sends a control signal to selection circuit 2. Selection circuit 2 then completely de-energizes the first wireless module U1, and the second wireless module U2 establishes a connection with the power supply VCC. The second wireless module U2 then initiates the transmission of a positioning signal.

[0035] The aforementioned financial terminal equipment has all-weather positioning and tracking capabilities. That is, through the power supply module's state switching mechanism, the positioning signal transmission function of the second wireless module U2 is automatically activated after the financial terminal equipment is powered off, breaking through the limitation of the security function being restricted by the main system's power supply in the traditional solution, and realizing continuous location monitoring of the equipment in non-working state.

[0036] In addition, the financial terminal device also has a physical disassembly protection function, that is: the independent power supply mechanism of the second wireless module U2 forms a hidden security protection layer. Even if the attacker removes the power supply of the main control system U0, the device location can still be exposed by continuously transmitting positioning signals.

[0037] On the other hand, please refer to the following: Figure 1 and Figure 2 The selection circuit 2 includes a multiplex RF switch 20, which includes a common power port VDD, a first port RF1, a second port RF2, a common port ANT, and a control port VC. The common power port VDD is connected to the power supply VCC.

[0038] The common port ANT is connected to the negative terminal of the first wireless module U1 and the second wireless module U2, the first port RF1 is connected to the positive terminal of the first wireless module U1, and the second port RF2 is connected to the positive terminal of the second wireless module U2. The control port VC is electrically connected to the control circuit 1, and the control port VC is used to control one of the first port RF1 and the second port RF2 to connect to the common port ANT according to the state of the control circuit 1.

[0039] In this embodiment, the control port VC selectively connects one of the first port RF1 and the second port RF2 to the common power port VDD according to the state of the control circuit 1, that is, selects to power one of the first wireless module U1 and the second wireless module U2.

[0040] By using a multi-channel RF switch 20 to construct the selection circuit 2, power path switching and high-frequency interference suppression functions are integrated into a single device.

[0041] On the other hand, it also includes a first capacitor C1, one end of which is grounded and the other end of which is electrically connected to the control port VC.

[0042] In this embodiment, by adding a first capacitor C1 to form a filter structure for the control port VC, the transient spikes and electromagnetic interference generated during the switching process of the RF switch 20 are effectively eliminated.

[0043] On the other hand, the common port ANT is also equipped with a first resistor R1. Moreover, a second capacitor C2 is connected in parallel at the end of the first resistor R1 that is away from the common port ANT, and the second capacitor C2 is grounded.

[0044] By setting the first resistor R1, the current flowing through the common port ANT of the RF switch 20 is matched with the operating parameters of the RF switch 20. Moreover, the surge current is limited at the moment the RF switch 20 is turned on, reducing the risk of electrolytic corrosion of the switch contacts and effectively improving the lifespan of the RF switch 20.

[0045] In addition, the second capacitor C2 and the first resistor R1 are connected in parallel to form an RC absorption circuit, which can effectively attenuate the voltage spikes generated during the switching process and suppress high-frequency harmonic radiation, thus meeting the electromagnetic compatibility standards of financial terminal equipment.

[0046] On the other hand, a third capacitor C3 is connected in parallel at the end of the first resistor R1 that is close to the common port ANT, and the third capacitor C3 is grounded.

[0047] A wideband filter is formed by the synergistic effect of the second capacitor C2 and the third capacitor C3, and the resonance risk of traditional single-point filtering is eliminated by phase compensation.

[0048] On the other hand, the common power port VDD is electrically connected to the power supply VCC through the second resistor R2. The connection point between the common power port VDD and the second resistor R2 is also electrically connected to the fourth capacitor C4, which is grounded.

[0049] In this embodiment, by setting the second resistor R2, the voltage applied to the RF switch 20 by the power supply VCC can be controlled to meet the requirements. Additionally, by setting the fourth capacitor C4, noise from the power supply VCC can be filtered out.

[0050] On the other hand, the control circuit 1 includes a switching transistor Q1, which includes a control electrode G, a first conducting electrode S, and a second conducting electrode D. The control electrode G is electrically connected to the main control system U0 of the financial terminal equipment. The first conducting electrode S is grounded, and the second conducting electrode D is electrically connected to the power supply VCC through a third resistor R3. A signal acquisition point J electrically connected to the selection circuit 2 is provided between the second conducting terminal and the third resistor R3. The selection circuit 2 controls the selection circuit 2 to be in the first state or the second state according to the level state of the signal acquisition point J.

[0051] In this embodiment, when the financial terminal device is powered on, the control electrode G of the switching transistor Q1 receives a high-level signal, and the first conducting electrode S and the second conducting electrode D are connected, thereby pulling down the level of the signal acquisition point J, which in turn enables the RF switch 20 to select the first port RF1, and the power supply VCC supplies power to the first wireless module U1.

[0052] When the financial terminal equipment is powered off, the control electrode G of the switching transistor Q1 receives a low-level signal, so the first conducting electrode S and the second conducting electrode D are disconnected, and the signal acquisition point J is at a high level, thereby enabling the RF switch 20 to select the second port RF2, and the power supply VCC supplies power to the second wireless module U2.

[0053] In this embodiment, the switching transistor Q1 is preferably an NMOS transistor.

[0054] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A wireless device for a financial terminal apparatus, characterized by, The device includes a first wireless module, a second wireless module, and a power supply module. The first wireless module is electrically connected to the main control system of the financial terminal device and is used to provide wireless communication services to the financial terminal device. The second wireless module is used to emit a wireless positioning signal in real time when powered on, and the positioning signal represents the real-time location of the financial terminal device. The power supply module includes a power supply, a control circuit, and a selection circuit. The control circuit is electrically connected to the main control system of the financial terminal device. The control circuit is used to control the selection circuit to be in a first state or a second state according to the power-on signal or power-off signal of the financial terminal device. In the first state, the selection circuit selects the power path between the first wireless module and the power supply, and disconnects the power path between the second wireless module and the power supply. In the second state, the selection circuit selects the power path between the second wireless module and the power supply, and disconnects the power path between the first wireless module and the power supply.

2. The wireless device for financial terminal equipment according to claim 1, characterized in that, The selection circuit includes a multi-channel radio frequency switch, which includes a common power port, a first port, a second port, a common port, and a control port; the common power port is connected to the power supply. The common port is connected to the negative terminals of the first wireless module and the second wireless module, the first port is connected to the positive terminal of the first wireless module, the second port is connected to the positive terminal of the second wireless module, the control port is electrically connected to the control circuit, and the control port is used to control one of the first port and the second port to connect to the common port according to the state of the control circuit.

3. The wireless device for financial terminal equipment according to claim 2, characterized in that, It also includes a first capacitor, one end of which is grounded and the other end of which is electrically connected to the control port.

4. The wireless device for financial terminal equipment according to claim 2, characterized in that, The common port is also equipped with a first resistor.

5. The wireless device for financial terminal equipment according to claim 4, characterized in that, A second capacitor is connected in parallel to the end of the first resistor furthest from the common port, and the second capacitor is grounded.

6. The wireless device for financial terminal equipment according to claim 5, characterized in that, A third capacitor is connected in parallel at the end of the first resistor closest to the common port, and the third capacitor is grounded.

7. The wireless device for financial terminal equipment according to claim 2, characterized in that, The common power port is electrically connected to the power supply through a second resistor. A fourth capacitor is also electrically connected to the connection point between the common power port and the second resistor, and the fourth capacitor is grounded.

8. The wireless device for financial terminal equipment according to claim 1, characterized in that, The control circuit includes a switching transistor, which has a control electrode, a first conducting electrode, and a second conducting electrode. The control electrode is electrically connected to the main control system of the financial terminal equipment. The first conducting electrode is grounded. The second conducting electrode is electrically connected to the power supply through a third resistor. A signal acquisition point electrically connected to the selection circuit is provided between the second conducting electrode and the third resistor. The selection circuit controls the selection circuit to be in a first state or a second state according to the level state of the signal acquisition point.

9. The wireless device for financial terminal equipment according to claim 8, characterized in that, The switching transistor is an NMOS transistor.

10. A financial terminal device, characterized in that, It includes a main control system and a wireless device, the wireless device being as described in any one of claims 1 to 9.

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