Power supply circuit, antenna system and vehicle

Abstract

The utility model provides a power supply circuit which comprises a main power supply unit and an auxiliary power supply unit which are arranged in parallel, and the output ends of the main power supply unit and the auxiliary power supply unit are connected with the power end of an antenna signal processing module; the input end of the detection unit is connected with the output end of the main power supply unit, and the output end of the detection unit is connected with the enabling end of the auxiliary power supply unit; and when the conducting state of the detection unit is switched from a conducting state to a non-conducting state, the output end of the detection unit sends an enabling signal to the enabling end of the auxiliary power supply unit so as to control the operation of the auxiliary power supply unit. The auxiliary power supply unit can be controlled to operate and supply power to the antenna signal processing module when the main power supply unit has an abnormal conductive condition, so that the power supply of the antenna signal processing module is prevented from being influenced by the abnormality of the main power supply unit, the problem of antenna positioning failure is further avoided, the reliability and redundancy of the antenna system are improved, and the user experience is improved. And the performance of the vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a power supply circuit, an antenna system and a vehicle. Background Art

[0002] Vehicle antennas are key components for providing accurate positioning information, crucial for functions like navigation and autonomous driving. In traditional designs, antennas are typically powered solely by the telematics box (TBOX). A connection failure between the TBOX and the antenna can render the antenna's positioning ineffective, impacting vehicle performance. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a power supply circuit, an antenna system and a vehicle to solve the problem of vehicle positioning failure.

[0004] Based on the above objectives, the present invention provides a power supply circuit, comprising:

[0005] The main power supply unit and the auxiliary power supply unit are arranged in parallel, and their output ends are both used to connect to the power supply end of the antenna signal processing module;

[0006] a detection unit, whose input end is connected to the output end of the main power supply unit, and whose output end is connected to the enable end of the auxiliary power supply unit;

[0007] When the conduction state of the detection unit is switched from conduction to non-conduction, the output end of the detection unit sends an enable signal to the enable end of the auxiliary power supply unit to control the operation of the auxiliary power supply unit.

[0008] Furthermore, the auxiliary power supply unit includes an auxiliary power supply and a voltage-stabilized power supply chip, the voltage-stabilized power supply chip is provided with an enable terminal, the output terminal of the auxiliary power supply is connected to the input terminal of the voltage-stabilized power supply chip, and the output terminal of the detection unit is connected to the output terminal of the auxiliary power supply and the enable terminal of the voltage-stabilized power supply chip respectively;

[0009] When the conduction state of the detection unit switches from conduction to non-conduction, the output end of the auxiliary power supply sends an enable signal to the enable end of the voltage-stabilized power supply chip through the output end of the detection unit to control the operation of the auxiliary power supply unit.

[0010] Furthermore, a first consumption resistor is provided between the output end of the auxiliary power supply and the output end of the detection unit.

[0011] Furthermore, the detection unit includes a MOS tube, the source of the MOS tube is connected to the output end of the main power supply unit, the drain of the MOS tube is connected to the enable end of the auxiliary power supply unit, and the gate of the MOS tube is grounded.

[0012] Furthermore, the detection unit further includes a second consumption resistor, and the source of the MOS tube is connected to the output end of the main power supply unit through the second consumption resistor.

[0013] Furthermore, the output ends of the main power supply unit and the auxiliary power supply unit are connected to the power supply end of the antenna signal processing module through diodes.

[0014] Furthermore, the auxiliary power supply unit includes at least two sub-auxiliary power supply units arranged in parallel, and each of the sub-auxiliary power supply units is connected to the main power supply unit through a detection unit.

[0015] Based on the same inventive concept, the present application also provides an antenna system, comprising an antenna, an antenna signal processing module and the power supply circuit as described above;

[0016] The antenna signal processing module is connected to the antenna and the power supply circuit respectively.

[0017] Furthermore, the antenna signal processing module includes a filtering unit, a signal amplifying unit and a power splitting unit, the filtering unit is connected to the antenna and the signal amplifying unit respectively, and the power splitting unit is connected to the signal amplifying unit and the power supply circuit respectively.

[0018] Based on the same inventive concept, the present application also provides a vehicle, comprising the antenna system as described above.

[0019] From the above description, it can be seen that the power supply circuit provided by the present invention is connected to the power supply end of the antenna signal processing module by setting a parallel main power supply unit and an auxiliary power supply unit, so that both the main power supply unit and the auxiliary power supply unit can supply power to the antenna signal processing module, and a detection unit connected to the main power supply unit and the auxiliary power supply unit is set, so that the detection unit can detect the conductive state of the main power supply unit and control the operation of the auxiliary power supply unit based on the conductive state of the main power supply unit, so that when the main power supply unit has a conductive abnormality, the auxiliary power supply unit is controlled to operate to supply power to the antenna signal processing module, thereby avoiding the power supply of the antenna signal processing module being affected by the abnormality of the main power supply unit, thereby avoiding the problem of antenna positioning failure, which is beneficial to improving the reliability and redundancy of the antenna system, and thus improving the performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a functional block diagram of the power supply circuit of an embodiment of the present utility model;

[0022] Figure 2 This is a circuit connection diagram of the power supply circuit of an embodiment of the utility model;

[0023] Figure 3 This is a principle block diagram of the antenna system according to an embodiment of the present utility model.

[0024] In the figure: 10, main power supply unit; 20, auxiliary power supply unit; 21, auxiliary power supply; 22, voltage-stabilized power supply chip; 23, enable terminal; 30, antenna signal processing module; 31, filtering unit; 32, signal amplification unit; 33, power division unit; 34, power supply terminal of antenna signal processing module; 40, detection unit; 41, MOS tube; 42, second consumption resistor; 43, input terminal of detection unit; 44, output terminal of detection unit; 50, first consumption resistor; 60, diode; 70, antenna; 80, power supply circuit. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0027] As mentioned in the background, vehicle antennas are key components for providing accurate positioning information, crucial for functions like navigation and autonomous driving. In traditional designs, antennas are typically powered solely by the TBOX. A failure in the TBOX-to-antenna connection renders the antenna's positioning ineffective, impacting vehicle performance.

[0028] The following uses the example of a connected car (i.e., a smart car). With the increasing popularity of connected cars, GNSS (Global Navigation Satellite System) antennas are often installed to provide precise positioning information for the vehicle, which is crucial for functions such as navigation and autonomous driving. GNSS antennas are typically powered and diagnosed by a single path, the TBOX, which creates a single point of failure. A connection failure between the TBOX and the GNSS antenna will render the GNSS antenna positioning ineffective, impacting vehicle safety and performance.

[0029] Based on this, the present application provides a power supply circuit, an antenna system and a vehicle to solve the problem of positioning failure of the antenna on the vehicle and ensure the operational reliability and redundancy of the antenna system.

[0030] Hereinafter, the present application will be described in detail through one or more specific embodiments. Figure 1 As shown, a power supply circuit includes:

[0031] The main power supply unit 10 and the auxiliary power supply unit 20 are arranged in parallel, and their output ends are connected to the power supply terminal 34 of the antenna signal processing module 30;

[0032] a detection unit 40 , whose input terminal 43 is connected to the output terminal of the main power supply unit 10 , and whose output terminal 44 is connected to the enable terminal 23 of the auxiliary power supply unit 20 ;

[0033] When the conducting state of the detection unit 40 switches from conducting to non-conducting, the output terminal 44 of the detection unit 40 sends an enable signal to the enable terminal 23 of the auxiliary power supply unit 20 to control the operation of the auxiliary power supply unit 20 .

[0034] Specifically, the main power supply unit 10 and the auxiliary power supply unit 20 are arranged in parallel, and their output ends are connected to the power supply end 34 of the antenna signal processing module 30 to provide power support for the antenna signal processing module 30 to ensure the operation of the antenna system.

[0035] The input end 43 of the detection unit 40 is connected to the output end of the main power supply unit 10 to detect whether there is electrical signal transmission at the output end of the main power supply unit 10. When there is no abnormality in the main power supply unit 10 and it normally supplies power to the antenna signal processing module 30, there is electrical signal transmission at the output end of the main power supply unit 10; when there is an abnormality in the main power supply unit 10, it cannot supply power to the antenna signal processing module 30, and there is no electrical signal transmission at the output end of the main power supply unit 10; when the cause of the abnormality is uncertain, performing electrical signal detection on the output end of the main power supply unit 10 is the most direct way to determine whether there is a power supply abnormality in the main power supply unit 10. Therefore, connecting the input end 43 of the detection unit 40 to the output end of the main power supply unit 10 is beneficial for the detection unit 40 to quickly detect the power supply abnormality of the main power supply unit 10, and thus is beneficial to the power supply stability and reliability of the power supply circuit.

[0036] The output end 44 of the detection unit 40 is connected to the enable end 23 of the auxiliary power supply unit 20, so that when the input end 43 of the detection unit 40 detects that there is no electrical signal transmission from the output end of the main power supply unit 10 (that is, when the main power supply unit 10 has a power supply abnormality), the output end 44 of the detection unit 40 sends an enable signal to the enable end 23 of the auxiliary power supply unit 20, so that the auxiliary power supply unit 20 operates to replace the main power supply unit 10 to power the antenna signal processing module 30, thereby ensuring the normal operation of the antenna system.

[0037] Specifically, the detection unit 40 can change its conduction state according to the electrical signal state of its input end 43 (i.e., the output end of the main power supply unit 10). Therefore, when there is no electrical signal transmission at the output end of the main power supply unit 10, the conduction state of the detection unit 40 is switched from conduction to non-conduction, and the state of the output end 44 of the detection unit 40 also changes immediately, and then the output end 44 of the detection unit 40 sends an enable signal to the enable end 23 of the auxiliary power supply unit 20 connected thereto, so that the auxiliary power supply unit 20 is in operation.

[0038] It should be noted that the main power supply unit 10 can be powered by TBOX, and the auxiliary power supply unit 20 can include one or more. The auxiliary power supply unit 20 can be powered by IDC (Intelligent Driving Capability) or HUT (Head Unit). When there are multiple auxiliary power supply units 20, when the main power supply unit 10 fails, it can switch to any of the auxiliary power supply units 20 for power supply, and when the auxiliary power supply unit 20 fails, it can switch to other auxiliary power supply units 20 to ensure the power supply of the antenna signal processing module 30, avoid its interruption due to lack of power support, ensure the smooth operation of the antenna system, so as to achieve continuous positioning of the vehicle, and further improve the reliability and redundancy of the antenna system operation.

[0039] In this embodiment, a main power supply unit 10 and an auxiliary power supply unit 20 are connected in parallel to the power supply terminal 34 of the antenna signal processing module 30, so that both the main power supply unit 10 and the auxiliary power supply unit 20 can supply power to the antenna signal processing module 30, and a detection unit 40 connected to the main power supply unit 10 and the auxiliary power supply unit 20 is provided, so that the detection unit 40 can detect the conductive state of the main power supply unit 10 and control the operation of the auxiliary power supply unit 20 based on the conductive state of the main power supply unit 10, so that when the main power supply unit 10 has a conductive abnormality, the auxiliary power supply unit 20 is controlled to operate and supply power to the antenna signal processing module 30, thereby avoiding the power supply of the antenna signal processing module 30 being affected by the abnormality of the main power supply unit 10, thereby avoiding the problem of antenna positioning failure, which is beneficial to improving the reliability and redundancy of the antenna system, and thus improving the performance of the vehicle.

[0040] The above embodiment describes the operating status of the main power supply unit 10 detected by the auxiliary power supply unit 20 through the detection unit 30, and when the main power supply unit 10 operates abnormally, the auxiliary power supply unit 20 is started to replace the main power supply unit 10 to supply power to the antenna signal processing module 30, but does not specifically describe the specific structural composition for achieving this technical effect. The following embodiment describes the specific composition of the auxiliary power supply unit 20 in detail.

[0041] In some embodiments, as Figure 2 As shown, the auxiliary power supply unit 20 includes an auxiliary power supply 21 and a voltage-stabilized power supply chip 22. The voltage-stabilized power supply chip 22 is provided with an enable terminal 23. The output terminal of the auxiliary power supply 21 is connected to the input terminal of the voltage-stabilized power supply chip 22. The output terminal 44 of the detection unit 40 is connected to the output terminal of the auxiliary power supply 21 and the enable terminal 23 of the voltage-stabilized power supply chip 22 respectively.

[0042] When the conduction state of the detection unit 40 switches from conduction to non-conduction, the output end of the auxiliary power supply 21 sends an enable signal to the enable end 23 of the voltage-stabilized power supply chip 22 through the output end 44 of the detection unit 40 to control the operation of the auxiliary power supply unit 20.

[0043] Specifically, the auxiliary power supply unit 20 includes an auxiliary power supply 21 and a voltage-stabilized power supply chip 22. The output end of the auxiliary power supply 21 is connected to the input end of the voltage-stabilized power supply chip 22 to supply power to the antenna signal processing module 30 through the voltage-stabilized power supply chip 22. The enable end 23 on the voltage-stabilized power supply chip 22, that is, the enable end 23 of the auxiliary power supply unit 20, controls the operation of the voltage-stabilized power supply chip 22 to control whether the voltage-stabilized power supply chip 22 can supply power to the antenna signal processing module 30.

[0044] When the conduction state of the detection unit 40 is switched from conduction to non-conduction, the output end 44 of the detection unit 40 cannot receive the electrical signal transmitted from its input end 43, and the output end of the auxiliary power supply 21 sends an electrical signal (i.e., an enable signal) to the enable end 23 of the voltage-stabilized power supply chip 22 via the output end 44 of the detection unit 40, so that the voltage-stabilized power supply chip 22 operates, and then the voltage-stabilized power supply chip 22 can output the electricity of the auxiliary power supply 21 to the antenna signal processing module 30, so that the auxiliary power supply unit 20 supplies power to the antenna signal processing module 30.

[0045] When the detection unit 40 is in the on state, the output end 44 of the detection unit 40 can receive the electrical signal transmitted by its input end 43, and transmit the electrical signal from the output end of the auxiliary power supply 21 to the output end 44 of the detection unit 40 in the opposite direction to offset each other. As a result, the enable end 23 of the voltage-stabilized power supply chip 22 cannot receive the enable signal, and the voltage-stabilized power supply chip 22 does not operate, that is, the auxiliary power supply unit 20 does not supply power to the antenna signal processing module 30, and only the main power supply unit 10 supplies power to the antenna signal processing module 30.

[0046] It should be noted that the enable end 23 of the voltage-stabilized power supply chip 22 can only be enabled when a high-level signal is received. Therefore, when the detection unit 40 is not conducting, the enable end 23 receives the high-level signal transmitted by the auxiliary power supply 21, thereby enabling the chip. When the detection unit 40 is conducting, the enable end 23 receives a 0 or low-level signal, so enabling the chip cannot be achieved.

[0047] Exemplarily, the voltage-stabilizing power supply chip 22 is an LDO (Low Dropout Regulaor, low voltage difference linear regulator) power supply chip, which not only has enable control, but also can play a role in voltage stabilization, which is beneficial to the voltage stability of the power supply to the antenna signal processing module 30, and thus beneficial to the operation reliability and stability of the antenna.

[0048] In this embodiment, the output end of the auxiliary power supply 21 is not only connected to the input end of the voltage-stabilized power supply chip 22, but also connected to the output end 44 of the detection unit 40, so that when the conduction state of the detection unit 40 is non-conducting, an enable signal is sent to the enable end 23 of the voltage-stabilized power supply chip 22 connected to the output end 44 of the detection unit 40 through the output end 44 of the detection unit 40, so that the enable end 23 is enabled, and the voltage-stabilized power supply chip 22 outputs the electricity of the auxiliary power supply 21, thereby realizing the auxiliary power supply unit 20 supplying power to the antenna signal processing module 30, so that the auxiliary power supply unit 20 promptly replaces the main power supply unit 10 to supply power to the antenna signal processing module 30, avoiding the situation where the antenna signal processing module 30 has no power supply, which is beneficial to the positioning effectiveness and operation reliability of the antenna system.

[0049] The above embodiment describes the composition structure of the auxiliary power supply unit 20 and its connection with the detection unit 40. On this basis, the connection between the auxiliary power supply 21 in the auxiliary power supply unit 20 and the detection unit 40 is specifically limited to avoid the auxiliary power supply 21 sending an excessively large electrical signal to the enable end 23 of the voltage-stabilized power supply chip 22 via the output end of the detection unit, thereby affecting the operating stability of the power supply circuit 80.

[0050] In some embodiments, as Figure 2 As shown, a first consumption resistor 50 is provided between the output end of the auxiliary power supply 21 and the output end 44 of the detection unit 40 .

[0051] Specifically, the output end of the auxiliary power supply 21 is connected to the enable end 23 of the voltage-stabilized power supply chip 22 through the output end 44 of the detection unit 40, and the first consumption resistor 50 is set between the output end of the auxiliary power supply 21 and the output end 44 of the detection unit 40. When the detection unit 40 is not conductive, it can avoid the output end of the auxiliary power supply 21, the output end 44 of the detection unit 40 and the enable end 23 of the voltage-stabilized power supply chip 22 from forming a connection loop, causing the connection loop between the output end of the auxiliary power supply 21 and the input end of the voltage-stabilized power supply chip 22 to be short-circuited, thereby avoiding the output current of the auxiliary power supply 21 to the enable end 23 of the voltage-stabilized power supply chip 22 to be too large, affecting the normal operation of the auxiliary power supply unit 20, and thus helping to ensure the operation reliability of the auxiliary power supply unit 20 and the power supply circuit 80.

[0052] The above embodiment describes the composition of the auxiliary power supply unit 20, but does not elaborate on the specific composition of the detection unit 40. The following embodiment introduces the composition of the detection unit 40 to explain in detail how the technical effect of the detection unit 40 is achieved.

[0053] In some embodiments, the detection unit 40 includes a MOS transistor 41, the source of the MOS transistor 41 is connected to the output end of the main power supply unit 10, the drain of the MOS transistor 41 is connected to the enable end 23 of the auxiliary power supply unit 20, and the gate of the MOS transistor 41 is grounded.

[0054] Specifically, the source of the MOS (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) tube can receive the electrical signal of the output end of the main power supply unit 10, and the MOS tube 41 can adjust the conduction state of the source and the drain according to the electrical signal of the source, thereby realizing the conduction state of the MOS tube 41. The detection unit 40 is provided with the MOS tube 41, so that the detection unit 40 can adjust its conduction state according to the state of the main power supply unit 10, which is beneficial for the detection unit 40 to detect and control the enabling status of the auxiliary power supply unit 20, and is beneficial for the power supply switching of the main power supply unit 10 and the auxiliary power supply unit 20 in the power supply circuit 80, thereby ensuring uninterrupted power supply to the antenna system.

[0055] In some embodiments, the detection unit 40 further includes a second consumption resistor 42 , and the source of the MOS transistor 41 is connected to the output end of the main power supply unit 10 through the second consumption resistor 42 .

[0056] Specifically, the second consumption resistor 42 is located between the MOS tube 41 and the main power supply unit 10 to consume the current transmitted from the output end of the main power supply unit 10 to the drain of the MOS tube 41, thereby avoiding excessive current flowing through the detection unit 40 and affecting the normal operation of the detection unit 40 and the main power supply unit 10, which is conducive to ensuring the operating stability of the power supply circuit 80.

[0057] The above embodiments describe the composition of the power supply circuit 80 and the realization of specific technical effects, but do not describe the safety structure of the power supply circuit 80 . The following embodiments introduce the safety protection structure of the power supply circuit 80 .

[0058] In some embodiments, the output terminals of the main power supply unit 10 and the auxiliary power supply unit 20 are both connected to the power supply terminal of the antenna signal processing module 30 through a diode 60 .

[0059] Specifically, the output ends of the main power supply unit 10 and the auxiliary power supply unit 20 are each provided with a diode 60, and are connected to the antenna signal processing module 30 through the diode 60, which can avoid the occurrence of electrical signal backflow when the main power supply unit 10 or the auxiliary power supply unit 20 is supplying power, protect the main power supply unit 10 and the auxiliary power supply unit 20, and is beneficial to the operation stability of the power supply circuit 80.

[0060] In some embodiments, the auxiliary power supply unit 20 includes at least two sub-auxiliary power supply units 20 arranged in parallel, and each of the sub-auxiliary power supply units 20 is connected to the main power supply unit 10 through a detection unit 40 .

[0061] Specifically, the auxiliary power supply unit 20 includes at least two sub-auxiliary power supply units 20 arranged in parallel to replace the main power supply unit 10 to power the antenna signal processing module 30, further improving the operating reliability and redundancy of the power supply circuit 80, and thus benefiting the operating reliability of the antenna system.

[0062] Exemplarily, the auxiliary power supply unit 20 includes an IDC power supply unit and a HUT power supply unit, the main power supply unit 10 is a TBOX power supply unit, and a detection unit 40 is provided between the TBOX power supply unit and the IDC power supply unit. The input end 43 of the detection unit 40 is connected to the output end of the TBOX power supply unit, and the output end 44 is connected to the enable end 23 of the IDC power supply unit, so that when the TBOX power supply unit is abnormal and cannot supply power, the IDC power supply unit supplies power to the antenna signal processing module 30; the TBOX power supply unit and the IDC power supply unit A detection unit 40 is provided between the main power supply unit 10 and the HUT power supply unit. The input end 43 of the detection unit 40 is connected to the output end of the TBOX power supply unit and the output end of the IDC power supply unit at the same time, and the output end 44 is connected to the enable end 23 of the HUT power supply unit, so that when both the TBOX power supply unit and the IDC power supply unit are abnormal and unable to supply power, the HUT power supply unit supplies power to the antenna signal processing module 30. On the basis of the priority power supply of the main power supply unit 10 and the auxiliary power supply unit 20, the priority power supply inside the auxiliary power supply unit 20 is realized.

[0063] Based on the same inventive concept, the present application also provides an antenna system, such as Figure 3 As shown, it includes an antenna 70, an antenna signal processing module 30 and a power supply circuit 80 as described above;

[0064] The antenna signal processing module 30 is connected to the antenna 70 and the power supply circuit 80 respectively.

[0065] Specifically, each power supply unit in the power supply circuit 80 includes a power signal module (i.e., the auxiliary power supply 21 in the auxiliary power supply unit 20), which can provide power for the antenna signal processing module 30 and can also receive and send antenna signals.

[0066] The antenna 70 can receive signals and transmit the received signals to the antenna signal processing module 30. The antenna signal processing module 30 processes the signals and transmits the processed signals to the power signal module in the power supply circuit 80, thereby completing the signal reception.

[0067] In addition, the power signal module can also transmit the signal to be transmitted to the antenna signal processing module 30. The antenna signal processing module 30 processes the signal and transmits the processed signal to the antenna 70. The antenna transmits the signal, thereby completing the signal transmission.

[0068] It should be noted that the antenna may be a GNSS antenna, a GPS (Global Positioning System) antenna, or other types of antennas.

[0069] In this embodiment, the power supply circuit 80 provides a main power supply unit 10 and an auxiliary power supply unit 20 for the operation of the antenna system, which can improve the operational reliability and redundancy of the antenna system and ensure effective positioning of the antenna system.

[0070] In some embodiments, as Figure 3 As shown, the antenna signal processing module 30 includes a filtering unit 31, a signal amplifying unit 32 and a power dividing unit 33. The filtering unit 31 is connected to the antenna and the signal amplifying unit 32 respectively, and the power dividing unit 33 is connected to the signal amplifying unit 32 and the power supply circuit 80 respectively.

[0071] Specifically, the antenna 70 can receive signals and transmit the received signals to the filtering unit 31. The filtering unit 31 filters the signals and transmits the filtered signals to the signal amplifying unit 32. The signal amplifying unit 32 amplifies the signals and transmits the amplified signals to the power splitting unit 33. The power splitting unit 33 splits the signals into two signals, one of which is transmitted to the power signal module of the main power supply unit 10, and the other is transmitted to the power signal module of the auxiliary power supply unit 20, so as to achieve reception of the antenna signal.

[0072] The power signal module of the main power supply unit 10 and the power signal module of the auxiliary power supply unit 20 can both transmit the transmitted signal to the power splitter unit 33. The power splitter unit 33 can combine the signals transmitted by the main power supply unit 10 and / or the auxiliary power supply unit 20 into one signal, and transmit the signal to the signal amplification unit 32. The signal amplification unit 32 amplifies the signal and transmits the amplified signal to the filtering unit 31. The filtering unit 31 filters the signal and transmits the filtered signal to the antenna 70. The antenna 70 transmits the signal to realize signal transmission.

[0073] In this embodiment, the power splitter unit 33 can be used to separate the signal received by the antenna into two signals, which can be transmitted to the main power supply unit 10 and the auxiliary power supply unit 20 respectively, thereby avoiding the weakening of the signal quality when the antenna signal is separated and ensuring normal communication between the power signal module in each power supply unit and the antenna.

[0074] It should be noted that the filtering unit 31 may be a filtering circuit, the signal amplifying unit 32 may be a signal amplifying circuit, and the power dividing unit 33 may be a power dividing circuit.

[0075] Based on the same inventive concept, the present application also provides a vehicle, including the antenna system as described above, the beneficial effects of which are the same as those of the above antenna system and the power supply circuit included in the above antenna system, and will not be repeated here.

[0076] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0077] The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power supply circuit, characterized in that: include: The main power supply unit and the auxiliary power supply unit are arranged in parallel, and their output ends are both used to connect to the power supply end of the antenna signal processing module; a detection unit, whose input end is connected to the output end of the main power supply unit, and whose output end is connected to the enable end of the auxiliary power supply unit; When the conduction state of the detection unit is switched from conduction to non-conduction, the output end of the detection unit sends an enable signal to the enable end of the auxiliary power supply unit to control the operation of the auxiliary power supply unit.

2. The power supply circuit according to claim 1, wherein: The auxiliary power supply unit includes an auxiliary power supply and a voltage-stabilized power supply chip, the voltage-stabilized power supply chip is provided with an enable terminal, the output terminal of the auxiliary power supply is connected to the input terminal of the voltage-stabilized power supply chip, and the output terminal of the detection unit is connected to the output terminal of the auxiliary power supply and the enable terminal of the voltage-stabilized power supply chip respectively; When the conduction state of the detection unit switches from conduction to non-conduction, the output end of the auxiliary power supply sends an enable signal to the enable end of the voltage-stabilized power supply chip through the output end of the detection unit to control the operation of the auxiliary power supply unit.

3. The power supply circuit according to claim 2, wherein: A first consumption resistor is provided between the output end of the auxiliary power supply and the output end of the detection unit.

4. The power supply circuit according to claim 1, wherein: The detection unit includes a MOS transistor, a source of the MOS transistor is connected to the output end of the main power supply unit, a drain of the MOS transistor is connected to the enable end of the auxiliary power supply unit, and a gate of the MOS transistor is grounded.

5. The power supply circuit according to claim 4, characterized in that: The detection unit further includes a second consumption resistor, and the source of the MOS tube is connected to the output end of the main power supply unit through the second consumption resistor.

6. The power supply circuit according to claim 1, wherein: The output ends of the main power supply unit and the auxiliary power supply unit are both connected to the power supply end of the antenna signal processing module through diodes.

7. The power supply circuit according to claim 1, characterized in that: The auxiliary power supply unit includes at least two sub-auxiliary power supply units arranged in parallel, and each of the sub-auxiliary power supply units is connected to the main power supply unit through a detection unit.

8. An antenna system, characterized in that: comprising an antenna, an antenna signal processing module and a power supply circuit according to any one of claims 1 to 7; The antenna signal processing module is connected to the antenna and the power supply circuit respectively.

9. The antenna system according to claim 8, wherein: The antenna signal processing module includes a filtering unit, a signal amplifying unit and a power dividing unit. The filtering unit is connected to the antenna and the signal amplifying unit respectively. The power dividing unit is connected to the signal amplifying unit and the power supply circuit respectively.

10. A vehicle, characterized in that: The invention comprises the antenna system according to any one of claims 8 to 9.

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