Vehicle-mounted device and vehicle

Abstract

The present disclosure relates to a vehicle-mounted device and a vehicle. The vehicle-mounted device comprises a first isolation circuit and a first device module. The first end of the first isolation circuit is configured to be connected with a vehicle-mounted power supply. The first end of the first device module is configured to be connected with the vehicle-mounted power supply, and the second end of the first device module is connected with the second end of the first isolation circuit, so that the second end of the first isolation circuit and the second end of the device module can be connected with a terminal device through the same power line. The first isolation circuit is configured to present a high impedance value to communication signals of different frequency bands transmitted on the power line, and the high impedance value is any impedance value greater than a preset impedance value. The technical solution can improve the reliability and stability of the power line communication link in the vehicle-mounted power line communication scene of the intelligent networked vehicle.

Description

Technical Field

[0001] This disclosure relates to vehicle communication technology, and more particularly to vehicle equipment and vehicles. Background Technology

[0002] With the development of intelligent connected vehicles, the interconnection and interoperability between in-vehicle devices is also developing. In-vehicle devices can establish wireless connections via Bluetooth, Wi-Fi, and other methods to achieve interconnection and interoperability. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this disclosure provides an in-vehicle device and a vehicle.

[0004] According to a first aspect of the present disclosure, an in-vehicle device is provided, comprising: a first isolation circuit and a first device module; wherein a first terminal of the first isolation circuit is used to connect to an in-vehicle power supply; a first terminal of the first device module is used to connect to the in-vehicle power supply, and a second terminal of the first device module is connected to a second terminal of the first isolation circuit, such that the second terminal of the first isolation circuit and the second terminal of the first device module can be connected to a peer device via the same power line; the first isolation circuit is configured to present a high impedance value for communication signals of different frequency bands transmitted on the power line, wherein the high impedance value is any impedance value greater than a preset impedance value.

[0005] Optionally, the first isolation circuit includes: a first inductor, a first resistor, and a first capacitor; a first end of the first inductor is connected to a first end of the first resistor, a second end of the first inductor is connected to a first end of the first capacitor, a second end of the first resistor is connected to a second end of the first capacitor, the first end of the first inductor and the first end of the first resistor are respectively used to connect to the vehicle power supply, and the second end of the first inductor and the first end of the first capacitor are respectively connected to the second end of the first device module.

[0006] Optionally, the vehicle-mounted device further includes a first impedance detection circuit, which is connected to the first isolation circuit and is used to detect the impedance of the first isolation circuit.

[0007] Optionally, the first device module includes: a first power line communication module and a first signal coupling unit; wherein, a first end of the first power line communication module is used to connect to a communication signal source, and a second end of the first power line communication module is used to connect to the vehicle power supply; a first end of the first signal coupling unit is connected to a third end of the first power line communication module, and a second end of the first signal coupling unit is connected to a second end of the first isolation circuit.

[0008] According to a second aspect of the present disclosure, a vehicle-mounted device is provided, comprising: a second isolation circuit and a second device module; wherein a first terminal of the second isolation circuit is connected to a first terminal of the second device module, and the first terminal of the second isolation circuit and the first terminal of the second device module are connected to a peer device via the same power line; a second terminal of the second isolation circuit is connected to a second terminal of the second device module; the second isolation circuit is configured to present a high impedance value for communication signals of different frequency bands transmitted on the power line, wherein the high impedance value is any impedance value greater than a preset impedance value.

[0009] Optionally, the second isolation circuit includes: a second inductor, a second resistor, and a second capacitor; a first end of the second inductor is connected to a first end of the second resistor, a second end of the second inductor is connected to a first end of the second capacitor, a second end of the second resistor is connected to a second end of the second capacitor, the first end of the second inductor and the first end of the second resistor are respectively used to connect to the peer device, and the second end of the second inductor and the second end of the second capacitor are respectively connected to the second end of the second device module.

[0010] Optionally, the vehicle-mounted device further includes a second impedance detection circuit, which is connected to the second isolation circuit and is used to detect the impedance of the second isolation circuit.

[0011] Optionally, the vehicle-mounted device further includes a second impedance detection circuit, which is connected to the second isolation circuit and is used to detect the impedance of the second isolation circuit.

[0012] According to a third aspect of the present disclosure, a vehicle is provided, comprising: an on-board power supply; an on-board device as described in the first aspect of the present disclosure; and / or an on-board device as described in the second aspect of the present disclosure.

[0013] Optionally, the vehicle further includes a controller, which is connected to the on-board equipment as described in the first aspect of this disclosure via Ethernet communication.

[0014] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0015] A first isolation circuit and a first device module are configured in the vehicle-mounted equipment. The first end of the first isolation circuit and the first end of the first device module are respectively used to connect to the vehicle power supply. The second end of the first isolation circuit and the second end of the first device module are connected, and they can be connected to the peer device through the same power line. Since the first isolation circuit is constructed to present a high impedance value for communication signals of different frequency bands transmitted on the power line, it can prevent communication signals transmitted via the power line from flowing to the vehicle power supply through the first isolation circuit, thereby avoiding communication signal attenuation and improving the communication signal transmission rate between the vehicle-mounted equipment and the peer device. This can improve the reliability and stability of the power line communication link in the vehicle-mounted power line communication scenario of intelligent connected vehicles.

[0016] Furthermore, the vehicle-mounted equipment is equipped with a second isolation circuit and a second device module. The first end of the second isolation circuit is connected to the first end of the second device module, allowing both ends to connect to the peer device via the same power line. The second end of the second isolation circuit is connected to the second end of the second device module. Because the second isolation circuit is configured to present a high impedance value for communication signals of different frequency bands transmitted via the power line, power transmitted by the peer device via the power line can supply power to the second device module through the second isolation circuit, preventing communication signals transmitted via the power line from flowing to the second end of the second device module. Therefore, in scenarios where the vehicle-mounted equipment is powered and transmits communication signals via the power line, signal attenuation can be avoided, and the communication signal transmission rate can be improved, thereby enhancing the reliability and stability of the power line communication link in vehicle-mounted power line communication scenarios.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a schematic diagram illustrating an application scenario of an in-vehicle DC power line carrier according to an exemplary embodiment.

[0020] Figure 2 This is a structural block diagram of a first type of vehicle-mounted device according to an exemplary embodiment.

[0021] Figure 3 This is a schematic diagram of a first isolation circuit according to an exemplary embodiment.

[0022] Figure 4This is a schematic diagram illustrating a first device module according to an exemplary embodiment.

[0023] Figure 5 This is a schematic diagram of the circuit structure of a first type of vehicle-mounted device according to an exemplary embodiment.

[0024] Figure 6 This is a structural block diagram of a second type of vehicle-mounted device according to an exemplary embodiment.

[0025] Figure 7 This is a schematic diagram of a second isolation circuit according to an exemplary embodiment.

[0026] Figure 8 This is a schematic diagram illustrating a second device module according to an exemplary embodiment.

[0027] Figure 9 This is a schematic diagram of the circuit structure of a second type of vehicle-mounted device according to an exemplary embodiment.

[0028] Figure 10 This is a structural block diagram of a vehicle according to an exemplary embodiment.

[0029] Figure 11 This is a circuit diagram of a vehicle according to an exemplary embodiment.

[0030] Figure 12 This is a schematic diagram illustrating the impedance variation of an isolation circuit according to an exemplary embodiment. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0032] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0033] As intelligent connected vehicles become more and more common, there is increasing interconnection between in-vehicle devices. In particular, in-vehicle devices can establish wireless connections through Bluetooth, WIFI and other methods to achieve interconnection between them.

[0034] This interconnection method, limited by its specific location, cannot achieve a stable wireless connection between vehicle-mounted devices, resulting in poor reliability and stability of interconnection between vehicle-mounted devices.

[0035] Considering the poor stability of wireless connections, power line carrier communication technology is used to achieve interconnection between vehicle-mounted devices.

[0036] The full name of power line carrier communication technology is Power Line Communication, which can be abbreviated as PLC.

[0037] Power line carrier communication technology can be applied in various scenarios such as communication of vehicle internal control systems, interconnection of in-vehicle multimedia systems, communication between new energy vehicle battery management systems and charging piles, and data interaction between intelligent connected vehicles and external networks.

[0038] Figure 1 This is a schematic diagram illustrating an application scenario of an in-vehicle DC power line carrier according to an exemplary embodiment, such as... Figure 1 As shown, the vehicle-mounted devices involved in this application scenario include: vehicle power supply, PLC gateway, and PLC device.

[0039] A vehicle power supply can be understood as the vehicle's power source, and it can be a DC power supply. A PLC gateway can be understood as a vehicle-mounted communication device that converts signals from a signal source into PLC signals and transmits them to the PLC device. The PLC device can be various vehicle-mounted devices related to intelligent connectivity functions, such as multimedia devices, air conditioning devices, and drive devices.

[0040] The vehicle power supply and PLC gateway are connected via power lines, as are the PLC gateway and PLC devices. Power signals from the vehicle power supply are transmitted sequentially to the PLC gateway and PLC devices via these power lines. Communication signals from the PLC gateway are transmitted to the PLC devices via the same power lines, and vice versa.

[0041] Therefore, in this application scenario, power lines can be used to transmit both power signals and communication signals.

[0042] exist Figure 1 In the application scenario of vehicle-mounted DC power line carrier communication shown, the vehicle-mounted DC power supply has low impedance and is close to the PLC gateway and PLC equipment, which may cause the communication signal to flow to the vehicle-mounted power supply, resulting in signal attenuation. Therefore, appropriate methods need to be adopted to avoid signal attenuation.

[0043] Based on this, the present disclosure provides a technical solution to improve the internal circuit structure of vehicle-mounted equipment in the vehicle-mounted DC power line carrier communication scenario, so as to solve the problem of communication signal attenuation and improve the communication signal transmission rate, thereby improving the reliability and stability of the power line communication link in the vehicle-mounted DC power line carrier communication scenario.

[0044] Figure 2 This is a structural block diagram of a first type of vehicle-mounted device according to an exemplary embodiment, such as... Figure 2 As shown, the vehicle-mounted device includes: a first isolation circuit 210 and a first device module 220.

[0045] The first terminal of the first isolation circuit 210 is used to connect to the vehicle power supply, and the first terminal of the first device module 220 is used to connect to the vehicle power supply.

[0046] In some embodiments, the first end of the first isolation circuit 210 may be connected to the first end of the first device module 220, so that the first end of the first isolation circuit 210 and the first end of the first device module 220 can be connected to the vehicle power supply through the same power line.

[0047] Furthermore, the second end of the first device module 220 is connected to the second end of the first isolation circuit 210, so that the second end of the first isolation circuit 210 and the second end of the first device module 220 can be connected to the other end device through the same power line.

[0048] In some embodiments, the peer device may be other vehicle-mounted devices or other devices that can be connected to the vehicle-mounted devices via power lines.

[0049] In some embodiments, the first isolation circuit 210 is configured to present a high impedance value for communication signals of different frequency bands transmitted on the power line, so as to prevent communication signals transmitted via the power line from flowing to the vehicle power supply through the first isolation circuit 210. The high impedance value is any impedance value greater than a preset impedance value.

[0050] In some embodiments, different frequency bands may involve high frequency bands (tens to hundreds of megahertz), low frequency bands (several megahertz to tens of megahertz), or may cover the entire frequency band of communication signals.

[0051] In some embodiments, when the first isolation circuit 210 presents a high impedance value, it serves to isolate the communication signal from the vehicle power supply, thereby preventing the communication signal transmitted via the power line from flowing to the vehicle power supply.

[0052] In some embodiments, the preset impedance value can be obtained through offline testing, and no limit is imposed on the value here.

[0053] In some embodiments, Figure 2The vehicle-mounted device shown can be used as a PLC gateway for the vehicle.

[0054] In some embodiments, the vehicle-mounted device may further include a device body, with the first isolation circuit 210 and the first device module 220 disposed within the device body.

[0055] In some embodiments, the connection between the first isolation circuit 210 and the first device module 220 and external devices can be achieved through an interface.

[0056] For example, the first end of the first isolation circuit 210 and the first end of the first device module 220 are both connected to the same interface. By connecting the power line connected to the vehicle power supply to this interface, the first isolation circuit 210 and the first device module 220 can be connected to the vehicle power supply respectively.

[0057] For example, the second end of the first isolation circuit 210 and the second end of the first device module 220 are both connected to the same interface. By connecting the power line connected to the peer device to this interface, the second isolation circuit and the second device module can be connected to the peer device respectively.

[0058] Figure 3 This is a schematic diagram of a first isolation circuit 210 according to an exemplary embodiment, as shown below. Figure 3 As shown, the first isolation circuit 210 may include: a first inductor L1, a first resistor R1, and a first capacitor C1.

[0059] Wherein, the first end of the first inductor L1 is connected to the first end of the first resistor R1, the second end of the first inductor L1 is connected to the first end of the first capacitor C1, the second end of the first resistor R1 is connected to the second end of the first capacitor C1, the first end of the first inductor L1 and the first end of the first resistor R1 are respectively used to connect to the vehicle power supply, and the second end of the first inductor L1 and the first end of the first capacitor C1 are respectively connected to the second end of the first device module 220.

[0060] In some embodiments, the first inductor L1 can be a differential-mode inductor. On the one hand, differential-mode inductors are less expensive and do not restrict the current of the circuit. On the other hand, by connecting a capacitor and a resistor in parallel with the differential-mode inductor, simulation and testing have confirmed that the parallel combination of inductor, resistor, and capacitor can significantly widen the high-impedance frequency band, allowing the first isolation circuit 210 to maintain high impedance in different operating frequency bands, thereby preventing signal attenuation in different frequency bands.

[0061] Figure 4 This is a schematic diagram illustrating a first device module 220 according to an exemplary embodiment, as shown below. Figure 4As shown, the first device module 220 includes: a first power line communication module 221 and a first signal coupling unit 222.

[0062] The first end of the first power line communication module 221 is used to connect to a communication signal source, and the second end of the first power line communication module 221 is used to connect to the vehicle power supply. The first end of the first signal coupling unit 222 is connected to the third end of the first power line communication module 221, and the second end of the first signal coupling unit 222 is connected to the second end of the first isolation circuit 210.

[0063] In some embodiments, the first power line communication module 221 may be a PLC module, which can convert signals from a communication signal source into PLC signals and transmit them to the first signal coupling unit 222.

[0064] In some embodiments, the first signal coupling unit 222 may be a coupling transformer, which can realize the coupling and transformation of PLC signals.

[0065] In some embodiments, the first signal coupling unit 222 may further include a ground terminal, which is grounded.

[0066] As the first optional signal transmission link: communication signal source → first power line communication module 221 → first signal coupling unit 222.

[0067] As a second optional signal transmission link: First signal coupling unit 222 → First power line communication module 221 → Communication signal source.

[0068] Figure 5 This is a schematic diagram of the circuit structure of a first type of vehicle-mounted device according to an exemplary embodiment, such as... Figure 5 As shown, the first isolation circuit 210 adopts the following... Figure 3 In the embodiment shown, the first device module 220 adopts as follows: Figure 4 In the embodiment shown, the first end of the first inductor L1 and the first power line communication module 221 can be connected to the vehicle power supply in a common-line manner, and the second end of the first inductor L1, the first end of the first capacitor C1 and the second end of the first signal coupling unit 222 can be connected to the vehicle equipment at the other end in a common-line manner.

[0069] PLC signals (i.e. communication signals transmitted via power lines) can be transmitted between the first signal coupling unit 222 and the first power line communication module 221.

[0070] In some embodiments, the vehicle-mounted device may further include: a first impedance detection circuit, which is connected to the first isolation circuit 210 and is used to detect the impedance of the first isolation circuit 210.

[0071] In some embodiments, the first impedance detection circuit may be connected to the second terminal of the first isolation circuit 210, and may include a voltage detection unit and a current detection unit. The voltage detection unit can detect the voltage at the second terminal of the first isolation circuit 210, and the current detection unit can detect the current at the second terminal of the first isolation circuit 210. Based on the voltage and current, the impedance of the second terminal of the first isolation circuit 210, i.e., the impedance of the first isolation circuit 210, can be determined.

[0072] In some embodiments, the implementation of the first impedance detection circuit can refer to mature impedance detection technologies in the art, and will not be described in detail here.

[0073] In some embodiments, the impedance of the first isolation circuit 210 can be recorded, and the attenuation of the communication signal can be analyzed based on the recorded impedance. For example, if all recorded impedances are greater than a preset impedance value, then there is no attenuation of the communication signal.

[0074] In some embodiments, the first impedance detection circuit may include a storage unit, through which impedance can be recorded.

[0075] It is understandable that if there is a need to obtain impedance later, the recorded impedance can be obtained from the storage unit, or the impedance can be detected by the first impedance detection circuit; no limitation is made here.

[0076] For example, in a scenario where communication problems are being investigated in a vehicle-mounted device, the impedance of the first isolation circuit 210 can be obtained in the manner described above to check whether the communication problem in the vehicle-mounted device is caused by a problem with the isolation circuit.

[0077] In some embodiments, the impedance of the first isolation circuit 210 may be used in other applications under different scenarios, which are not limited here.

[0078] Figure 6 This is a structural block diagram of a second type of vehicle-mounted device according to an exemplary embodiment, such as... Figure 6 As shown, the vehicle-mounted device includes a second isolation circuit 610 and a second device module 620.

[0079] The first end of the second isolation circuit 610 is connected to the first end of the second device module 620, so that the first end of the second isolation circuit 610 and the first end of the second device module 620 can be connected to the other end device through the same power line.

[0080] Furthermore, the second terminal of the second isolation circuit 610 is connected to the second terminal of the second device module 620.

[0081] In some embodiments, the peer device may be other vehicle-mounted devices or other devices that can be connected to the vehicle-mounted devices via power lines; and the peer device may be connected to a corresponding power source, so that the peer device can also transmit power to the second device module 620, thereby enabling the second device module 620 to be powered.

[0082] In some embodiments, the second isolation circuit 610 is configured to present a high impedance value for communication signals of different frequency bands transmitted on the power line, so that the power transmitted by the peer device through the power line can power the second device module 620 through the second isolation circuit 610, and prevent the communication signals transmitted through the power line from flowing to the second end of the second device module 620 through the second isolation circuit 610. The high impedance value is any impedance value greater than a preset impedance value.

[0083] In some embodiments, different frequency bands may involve high frequency bands (tens to hundreds of megahertz), low frequency bands (several megahertz to tens of megahertz), or may cover the entire frequency band of communication signals.

[0084] In some embodiments, when the second isolation circuit 610 presents a high impedance value, it serves to isolate the communication signal from the second terminal of the second device module 620, thereby preventing the communication signal transmitted via the power line from flowing to the second terminal of the second device module 620.

[0085] Furthermore, the power transmitted by the peer device via the power line can power the second device module 620 through the second isolation circuit 610.

[0086] In some embodiments, the implementation of the preset impedance value can refer to the foregoing embodiments.

[0087] In some embodiments, Figure 6 The vehicle-mounted equipment shown can be used as a PLC device in a vehicle.

[0088] In some embodiments, the vehicle-mounted device may further include a device body, with the second isolation circuit 610 and the second device module 620 disposed within the device body.

[0089] In some embodiments, the connection between the second isolation circuit 610 and the second device module 620 and the peer device can be achieved through an interface.

[0090] For example, the first end of the second isolation circuit 610 and the first end of the second device module 620 are both connected to the same interface. By connecting the power line to the peer device to this interface, the first end of the first isolation circuit 210 and the first end of the first device module 220 can be connected to the peer device via the same power line.

[0091] Figure 7This is a schematic diagram of a second isolation circuit 610 according to an exemplary embodiment, as shown below. Figure 7 As shown, the second isolation circuit 610 includes: a second inductor L2, a second resistor R2, and a second capacitor C2.

[0092] Specifically, the first end of the second inductor L2 is connected to the first end of the second resistor R2, the second end of the second inductor L2 is connected to the first end of the second capacitor C2, the second end of the second resistor R2 is connected to the second end of the second capacitor C2, the first end of the second inductor L2 and the first end of the second resistor R2 are respectively used to connect to the opposite device, and the second end of the second inductor L2 and the second end of the second capacitor C2 are respectively connected to the second end of the second device module 620.

[0093] In some embodiments, the second inductor L2 can be a differential-mode inductor. On the one hand, differential-mode inductors are less expensive and do not restrict the current of the circuit. On the other hand, by connecting a capacitor and a resistor in parallel with the differential-mode inductor, simulation and testing have confirmed that the parallel combination of inductor, resistor, and capacitor can significantly widen the high-impedance frequency band, allowing the second isolation circuit 610 to maintain high impedance in different operating frequency bands, thereby preventing signal attenuation in different frequency bands.

[0094] Figure 8 This is a schematic diagram illustrating a second device module 620 according to an exemplary embodiment, as shown below. Figure 8 As shown, the second device module 620 includes: a second power line communication module 621 and a second signal coupling unit 622.

[0095] The first end of the second signal coupling unit 622 is connected to the first end of the second isolation circuit 610, so that the first end of the second isolation circuit 610 and the first end of the second signal coupling unit 622 can be connected to the other end device through the same power line; the second end of the second signal coupling unit 622 is connected to the first end of the second power line communication module 621, and the second end of the second power line communication module 621 is connected to the second end of the second isolation circuit 610.

[0096] In some embodiments, the second signal coupling unit 622 may further include a ground terminal, which is grounded.

[0097] In some embodiments, the second power line communication module 621 may be a PLC module, which can convert the communication signals to be transmitted into PLC signals and transmit them to the second signal coupling unit 622.

[0098] In some embodiments, the second signal coupling unit 622 may be a coupling transformer, which can realize the coupling and transformation of PLC signals.

[0099] Alternatively, the second signal coupling unit 622 decouples the PLC signal transmitted from the peer device and then transmits it to the PLC module, where the PLC module processes the decoupled PLC signal.

[0100] Therefore, as the first optional signal transmission link: peer device → second signal coupling unit 622 → second power line communication module 621.

[0101] As a second optional signal transmission link: Second power line communication module 621 → Second signal coupling unit 622 → Peer device.

[0102] Figure 9 This is a schematic diagram of the circuit structure of a second type of vehicle-mounted device according to an exemplary embodiment, such as... Figure 9 As shown, the second isolation circuit 610 adopts the following... Figure 7 In the embodiment shown, the second device module 620 adopts as follows: Figure 8 In the embodiment shown, the first end of the second inductor L2, the first end of the second resistor R2, and the first end of the second signal coupling unit 622 can be connected to the other end device via a common (power) line, and the second end of the second inductor L2 and the first end of the second capacitor C2 can be connected to the second end of the second power line communication module 621, respectively.

[0103] PLC signals (i.e., communication signals transmitted via power lines) can be transmitted between the second signal coupling unit 622 and the second power line communication module 621.

[0104] In some embodiments, the vehicle-mounted device may further include: a second impedance detection circuit, which is connected to the second isolation circuit 610 and is used to detect the impedance of the second isolation circuit 610.

[0105] In some embodiments, the second impedance detection circuit may be connected to the first terminal of the second isolation circuit 610, and may include a voltage detection unit and a current detection unit. The voltage detection unit can detect the voltage at the first terminal of the second isolation circuit 610, and the current detection unit can detect the current at the first terminal of the second isolation circuit 610. Based on the voltage and current, the impedance of the first terminal of the second isolation circuit 610, i.e., the impedance of the second isolation circuit 610, can be determined.

[0106] In some embodiments, the impedance of the second isolation circuit 610 can be recorded, and the attenuation of the communication signal can be analyzed based on the recorded impedance. For example, if all recorded impedances are greater than a preset impedance value, then there is no attenuation of the communication signal.

[0107] In some embodiments, the second impedance detection circuit may include a storage unit, through which impedance can be recorded.

[0108] It is understandable that if there is a need to obtain impedance later, the recorded impedance can be obtained from the storage unit, or the impedance can be detected by the second impedance detection circuit; no limitation is made here.

[0109] For example, in a scenario where communication problems occur in vehicle-mounted equipment, the impedance of the second isolation circuit 610 can be obtained in the manner described above to check whether the communication problems in the vehicle-mounted equipment are caused by a problem with the isolation circuit.

[0110] In some embodiments, the impedance of the second isolation circuit 610 may be used in other applications in different scenarios, which are not limited here.

[0111] Figure 10 This is a structural block diagram of a vehicle 1000 according to an exemplary embodiment, such as... Figure 11 As shown, the vehicle 1000 may include: an on-board power supply 1001, a first on-board device 1002, and a second on-board device 1003.

[0112] The first on-board device 1002 can be a PLC gateway, and can adopt, for example... Figures 2-5 In the embodiment of the vehicle-mounted equipment shown, the second vehicle-mounted equipment 1003 can be a PLC device, and can adopt, for example... Figures 6-9 The implementation method of the vehicle-mounted equipment shown is illustrated.

[0113] Therefore, the implementation methods of the first vehicle-mounted device 1002 and the second vehicle-mounted device 1003 will not be described again here.

[0114] In some embodiments, the vehicle 1000 may also include one of the first vehicle-mounted devices 1002 and the second vehicle-mounted device 1003, without limitation.

[0115] Continue to refer to Figure 10 The vehicle 1000 may also include a controller 1004, which can be connected to the first vehicle-mounted device 1002 via Ethernet and can serve as a signal source for the first vehicle-mounted device 1002.

[0116] In one example, controller 1004 can generate control signals for the second vehicle-mounted device 1003 and transmit these control signals to the first vehicle-mounted device 1002 via Ethernet. The first vehicle-mounted device 1002 converts these signals into PLC signals and then transmits them to the second vehicle-mounted device 1003, thereby enabling control of the second vehicle-mounted device 1003.

[0117] Figure 11 This is a circuit diagram of a vehicle 1000 according to an exemplary embodiment, such as... Figure 11 As shown, the first vehicle-mounted device 1002 is a PLC gateway, and the second vehicle-mounted device 1003 includes multiple PLC devices, and the circuit structures of the multiple PLC devices can be the same.

[0118] exist Figure 11 In this configuration, the vehicle power supply 1001 is connected to the PLC gateway via a power line. Specifically, the first terminal of the isolation circuit of the PLC gateway (i.e., the isolation circuit constructed from inductor L, capacitor C, and resistor R) is connected to the first terminal of the PLC module in the PLC gateway via a common (power) line to the vehicle power supply 1001.

[0119] Furthermore, the second terminal of the PLC module in the PLC gateway is connected to the first terminal of the coupling transformer, and the second terminal of the coupling transformer in the PLC gateway is connected to the PLC device via a common line with the second terminal of the isolation circuit of the PLC gateway.

[0120] Specifically, the second terminal of the coupling transformer in the PLC gateway is connected to the first terminal of the isolation circuit in the PLC device and the first terminal of the coupling transformer in the PLC device via a common line with the second terminal of the isolation circuit of the PLC gateway.

[0121] Furthermore, the second end of the coupling transformer in the PLC device is connected to the first end of the PLC module of the PLC device, and the second end of the PLC module of the PLC device is connected to the second end of the isolation circuit of the PLC device.

[0122] Furthermore, the various PLC devices can be interconnected, and the internal circuit structures of each PLC device can be identical.

[0123] Specifically, the first terminal of the isolation circuit of any PLC device and the first terminal of the coupling transformer are connected to the first terminal of the isolation circuit of another PLC device and the first terminal of the coupling transformer in a collinear manner.

[0124] Combination Figure 11 In the transmission link from the PLC gateway to the PLC device, the PLC signal output by the PLC module in the PLC gateway through the coupling transformer is transmitted towards the PLC device instead of towards the vehicle power supply 1001, ensuring high-quality signal output. Furthermore, after the PLC signal reaches the PLC device, it is transmitted towards the coupling transformer instead of towards the PLC module within the PLC device, ensuring high-quality signal input.

[0125] In the transmission link from the PLC device to the PLC gateway, the PLC signal output by the PLC module in the PLC device via the coupling transformer is transmitted towards the PLC gateway instead of back towards the PLC module in the PLC device, ensuring high-quality signal output. Furthermore, after the PLC signal reaches the PLC gateway, it is transmitted towards the coupling transformer of the PLC gateway instead of towards the vehicle power supply 1001 terminal, ensuring high-quality signal input.

[0126] In the transmission link between PLC devices, the PLC signal output by the PLC module in one PLC device via the coupling transformer is transmitted to the other PLC device instead of back to the PLC module in that PLC device, ensuring high-quality signal output. Similarly, after the PLC signal reaches the other PLC device, it is transmitted to the coupling transformer of that other PLC device instead of back to the PLC module there, ensuring high-quality signal input.

[0127] It can be seen that regardless of which transmission link is used, it can avoid signal attenuation and ensure high-quality signal transmission.

[0128] Figure 12 This is a schematic diagram illustrating the impedance variation of an isolation circuit according to an exemplary embodiment, such as... Figure 12 As shown, the horizontal axis represents the frequency band of the communication signal, and the vertical axis represents the impedance of the isolation circuit. The isolation circuit can be either the first isolation circuit 210 or the second isolation circuit 610 mentioned above.

[0129] As can be seen, the implementation of the isolation circuit provided in this disclosure, namely the implementation of the isolation circuit constructed from inductors, resistors and capacitors, can ensure that the isolation circuit maintains high impedance in all frequency bands, solves the problem of impedance change of impedance components, thereby avoiding signal attenuation, improving the transmission quality of communication signals in vehicle scenarios, and improving anti-interference capability.

[0130] Furthermore, capacitors, inductors, and resistors are all relatively inexpensive and small in size, making them well-suited for intelligent connected vehicle scenarios.

[0131] In some embodiments, vehicle 1000 may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicle. Vehicle 1000 may be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0132] In some embodiments, the vehicle 1000 may include various subsystems, such as an infotainment system, a perception system, a decision control system, a drive system, and a computing platform. The vehicle 1000 may also include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and each component of the vehicle 1000 can be interconnected via wired or wireless means.

[0133] In some embodiments, an infotainment system may include a communication system, an entertainment system, and a navigation system, etc.

[0134] The perception system may include several types of sensors for sensing information about the environment surrounding the vehicle 1000. For example, the perception system may include a global positioning system (which may be GPS, BeiDou, or other positioning systems), an inertial measurement unit (IMU), lidar, millimeter-wave radar, ultrasonic radar, and camera devices.

[0135] The decision control system may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0136] The drive system may include components that provide power to the vehicle 1000. In one embodiment, the drive system may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of internal combustion engines, electric motors, and compressed air engines. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0137] Some or all of the functions of vehicle 1000 are controlled by a computing platform. The computing platform may include at least one processor and memory, and the processor can execute instructions stored in the memory.

[0138] The processor can be any conventional processor, such as a commercially available CPU. The processor can also include, for example, a Graphics Processing Unit (GPU), a Field Programmable Gate Array (FPGA), a System on Chip (SOC), an Application Specific Integrated Circuit (ASIC), or a combination thereof.

[0139] Memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0140] In addition to instructions, memory can also store data, such as road maps, route information, and vehicle position, direction, and speed. The data stored in memory can be used by the computing platform.

[0141] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0142] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0143] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0144] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0145] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0146] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0147] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A vehicle-mounted device, characterized in that, include: A first isolation circuit and a first device module; wherein... The first terminal of the first isolation circuit is used to connect to the vehicle power supply; The first end of the first device module is used to connect to the vehicle power supply, and the second end of the first device module is connected to the second end of the first isolation circuit, so that the second end of the first isolation circuit and the second end of the first device module can be connected to the other end device through the same power line; The first isolation circuit is configured to present a high impedance value for communication signals of different frequency bands transmitted on the power line, wherein the high impedance value is any impedance value greater than a preset impedance value.

2. The vehicle-mounted device according to claim 1, characterized in that, The first isolation circuit includes: a first inductor, a first resistor, and a first capacitor; The first end of the first inductor is connected to the first end of the first resistor, the second end of the first inductor is connected to the first end of the first capacitor, the second end of the first resistor is connected to the second end of the first capacitor, the first end of the first inductor and the first end of the first resistor are respectively used to connect to the vehicle power supply, and the second end of the first inductor and the first end of the first capacitor are respectively connected to the second end of the first device module.

3. The vehicle-mounted device according to claim 1 or 2, characterized in that, The vehicle-mounted equipment further includes a first impedance detection circuit, which is connected to the first isolation circuit and is used to detect the impedance of the first isolation circuit.

4. The vehicle-mounted device according to claim 1 or 2, characterized in that, The first device module includes: a first power line communication module and a first signal coupling unit; wherein, The first end of the first power line communication module is used to connect to a communication signal source, and the second end of the first power line communication module is used to connect to the vehicle power supply. The first end of the first signal coupling unit is connected to the third end of the first power line communication module, and the second end of the first signal coupling unit is connected to the second end of the first isolation circuit.

5. A vehicle-mounted device, characterized in that, include: The second isolation circuit and the second device module; wherein... The first end of the second isolation circuit is connected to the first end of the second device module, so that the first end of the second isolation circuit and the first end of the second device module can be connected to the other end device through the same power line; The second terminal of the second isolation circuit is connected to the second terminal of the second device module; The second isolation circuit is configured to present a high impedance value for communication signals of different frequency bands transmitted on the power line, wherein the high impedance value is any impedance value greater than a preset impedance value.

6. The vehicle-mounted device according to claim 5, characterized in that, The second isolation circuit includes: a second inductor, a second resistor, and a second capacitor; The first end of the second inductor is connected to the first end of the second resistor, the second end of the second inductor is connected to the first end of the second capacitor, the second end of the second resistor is connected to the second end of the second capacitor, the first end of the second inductor and the first end of the second resistor are respectively used to connect to the opposite device, and the second end of the second inductor and the second end of the second capacitor are respectively connected to the second end of the second device module.

7. The vehicle-mounted device according to claim 5 or 6, characterized in that, The vehicle-mounted equipment also includes a second impedance detection circuit, which is connected to the second isolation circuit and is used to detect the impedance of the second isolation circuit.

8. The vehicle-mounted device according to claim 5 or 6, characterized in that, The second device module includes: a second power line communication module and a second signal coupling unit; wherein, The first end of the second signal coupling unit is connected to the first end of the second isolation circuit, so that the first end of the second isolation circuit and the first end of the second signal coupling unit can be connected to the other end device through the same power line; The second end of the second signal coupling unit is connected to the first end of the second power line communication module, and the second end of the second power line communication module is connected to the second end of the second isolation circuit.

9. A vehicle, characterized in that, include: Vehicle power supply; A first vehicle-mounted device and a second vehicle-mounted device, wherein the first vehicle-mounted device includes the vehicle-mounted device as described in any one of claims 1 to 4, and the second vehicle-mounted device includes the vehicle-mounted device as described in any one of claims 5 to 8.

10. The vehicle according to claim 9, characterized in that, The vehicle also includes: The controller is connected to the first vehicle-mounted device via Ethernet communication.

Images