Signal receiving circuit and device, electronic equipment and vehicle

Abstract

The invention provides a signal receiving circuit and device, electronic equipment and a vehicle, relates to the field of wireless communication, and provides a signal receiving circuit which comprises a GPS antenna module, an FM antenna module, a single-channel transmission module and an identification circuit. The GPS antenna module is used for receiving a GPS signal and preprocessing the GPS signal to generate a first GPS signal; the FM antenna module is used for receiving an FM signal and preprocessing the FM signal to generate a first FM signal; the single-channel transmission module is connected with the GPS antenna module and the FM antenna module at the same time, and is used for transmitting the first GPS signal and the first FM signal to the identification circuit. In the circuit, the first GPS signal and the first FM signal generated by the GPS antenna module and the FM antenna module are transmitted through the single-channel transmission module, so that the first GPS signal and the first FM signal do not need to be transmitted through at least two transmission cables, and compared with multi-channel signal transmission, energy loss in the signal transmission process is reduced.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to a signal receiving circuit, device, method, electronic equipment and vehicle. Background Art

[0002] Commonly used communication methods mainly include: Frequency Modulation (FM), Global Positioning System (GPS), Bluetooth (BT) / Wireless Fidelity (WIFI), 5th Generation Mobile Communication Technology (5G), etc. When the electronic device is equipped with FM, GPS, BT / WIFI, and 5G communication functions at the same time, because the workload of 5G communication and BT / WIFI communication during signal transmission is high, in order to reduce power consumption, the 5G antenna module and BT / WIFI antenna module need to be installed at a position close to the communication host. At the same time, 5G signals and BT / WIFI signals are prone to cause communication interference to FM signals and GPS signals, so FM antenna modules and GPS antenna modules are usually installed at a distance from 5G antenna modules and BT / WIFI antenna modules. However, the FM signals and GPS signals received by the FM antenna module and GPS antenna module are transmitted through the transmission channels corresponding to each signal, which will cause great energy consumption during long-distance communication transmission. Summary of the invention

[0003] In view of this, the present application provides a signal receiving circuit, device, method, electronic device and vehicle, the main purpose of which is to solve the problem of high energy loss during communication when the FM antenna module and the GPS antenna module need to maintain an installation distance from the communication host.

[0004] To achieve the above objectives, the present application discloses a signal receiving circuit in a first aspect, comprising:

[0005] GPS antenna module, FM antenna module, single-channel transmission module, identification circuit;

[0006] The GPS antenna module is used to receive a GPS signal and pre-process the GPS signal to generate a first GPS signal;

[0007] The FM antenna module is used to receive an FM signal and pre-process the FM signal to generate a first FM signal;

[0008] The single-channel transmission module is connected to the GPS antenna module and the FM antenna module at the same time, and is used to transmit the first GPS signal and the first FM signal to the identification circuit;

[0009] The identification circuit is used to identify signal information in the first GPS signal and the first FM signal.

[0010] Optionally, the single-channel transmission module includes:

[0011] A combining module, a branching module, a single-channel transmission cable, a first filtering circuit and a second filtering circuit;

[0012] The combining module is connected to the GPS antenna module and the FM antenna module respectively, and is used to combine the first GPS signal and the first FM signal into a target transmission signal;

[0013] The single-channel transmission cable is respectively connected to the combining module and the branching module, and is used to transmit the target transmission signal to the branching module;

[0014] The branching module is connected to the first filter circuit via a first output terminal and connected to the second filter circuit via a second output terminal, and is used to divide the target transmission signal into a second GPS signal and a second FM signal, and transmit the second GPS signal to the first filter circuit, and transmit the second FM signal to the second filter circuit;

[0015] The first filtering circuit is connected to the receiving circuit, and is used to filter the second GPS signal, generate a third GPS signal, and transmit the third GPS signal to the identification circuit;

[0016] The second filtering circuit is connected to the receiving circuit, and is used for filtering the second FM signal to generate a third FM signal, and transmitting the third FM signal to the identification circuit.

[0017] Optionally, the combining module includes:

[0018] a first capacitor and a first inductor;

[0019] The first end of the first capacitor is connected to the GPS antenna module, the second end of the first capacitor is connected to the first end of the first inductor, the second end of the first inductor is connected to the FM antenna module, and the second end of the first capacitor is connected to the single-channel transmission cable.

[0020] Optionally, the branching module includes:

[0021] a second capacitor and a second inductor;

[0022] The first end of the second capacitor is connected to the first filter circuit, the second end of the second capacitor is connected to the first end of the second inductor, the second end of the second inductor is connected to the second filter circuit, and the second end of the second capacitor is connected to the single-channel transmission cable.

[0023] Optionally, the first filtering circuit includes:

[0024] a third capacitor, a fourth capacitor, a third inductor and a fourth inductor;

[0025] The first end of the third inductor serves as the input end of the first filtering circuit and is connected to the first output end of the shunt module. The second end of the third inductor is grounded. The first end of the third inductor is connected to the first end of the third capacitor. The second end of the third capacitor is connected to the first end of the fourth inductor. The second end of the fourth inductor is grounded. The first end of the fourth inductor is connected to the first end of the fourth capacitor. The second end of the fourth capacitor serves as the output end of the first filtering circuit and is connected to the identification circuit.

[0026] Optionally, the second filtering circuit includes:

[0027] a fifth capacitor, a sixth capacitor, a seventh capacitor and a fifth inductor;

[0028] The first end of the fifth capacitor serves as the input end of the second filtering circuit and is connected to the second output end of the shunt module. The second end of the fifth capacitor is connected to the first end of the sixth capacitor, the second end of the sixth capacitor is grounded, the first end of the sixth capacitor is connected to the first end of the fifth inductor, the second end of the fifth inductor is connected to the first end of the seventh capacitor, the second end of the seventh capacitor is grounded, and the first end of the seventh capacitor serves as the output end of the second filtering circuit and is connected to the identification circuit.

[0029] Optionally, the identification circuit includes:

[0030] GPS identification module, FM identification module;

[0031] The output end of the first filter circuit is connected to the input end of the GPS identification module;

[0032] The output end of the second filtering circuit is connected to the input end of the FM identification module.

[0033] In a second aspect of the present application, an embodiment provides a signal receiving device, which carries a signal receiving circuit as described in any one of the first aspects.

[0034] In a third aspect of the present application, an electronic device is provided, including:

[0035] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any one of the methods disclosed in the first aspect.

[0036] In a fourth aspect embodiment of the present application, a vehicle is provided, in which the signal receiving device as described in the second aspect or the electronic device as described in the third aspect is mounted.

[0037] In summary, according to the technical solution disclosed in the present application, a signal receiving circuit is provided, which includes: a GPS antenna module, an FM antenna module, a single-channel transmission module, and an identification circuit; the GPS antenna module is used to receive GPS signals, and pre-process the GPS signals to generate a first GPS signal; the FM antenna module is used to receive FM signals, and pre-process the FM signals to generate a first FM signal; the single-channel transmission module is connected to the GPS antenna module and the FM antenna module at the same time, and is used to transmit the first GPS signal and the first FM signal to the identification circuit; the identification circuit is used to identify the signal information in the first GPS signal and the first FM signal. In the circuit of the present application, the first GPS signal and the first FM signal generated by the GPS antenna module and the FM antenna module are transmitted through a single-channel transmission module, so that the first GPS signal and the first FM signal do not need to be transmitted through their respective corresponding transmission channels, and compared with multi-channel signal transmission, the energy loss in the signal transmission process is reduced. At the same time, in the use occasions where there are space or weight restrictions, due to the reduction of the transmission channels occupied by signal transmission, the number of transmission cables used to carry the transmission channels is reduced, which can save the occupied space and overall weight of the circuit.

[0038] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 Shows a structural diagram of an existing signal receiving circuit;

[0042] Figure 2 A structural diagram of a signal receiving circuit provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0044] In existing electronic devices equipped with multiple wireless transmission methods, such as automobiles, the main communication methods mainly include: FM, GPS, BT / WIFI, 5G, etc. Due to the influence of communication interference between the above communication methods during normal processes, the installation positions of the antenna modules of the above communication methods need to be configured in detail. Affected by the load during the communication process, the antenna modules corresponding to the communication methods with higher loads need to be installed as close to the communication host as possible, such as 5G antenna modules and BT / WIFI antenna modules. In order to avoid communication interference between multiple communication methods, the installation positions of the FM antenna module and the GPS antenna module need to maintain an installation distance from the installation positions of the 5G antenna module and the BT / WIFI antenna module. In order to achieve normal acquisition of the signals received by the FM antenna module and the GPS antenna module, it is necessary to lengthen the communication cables between the FM antenna module and the GPS antenna module and the communication host respectively. Figure 1 As shown in the figure, the FM antenna module and the GPS antenna module are connected to the communication host through a communication cable respectively, so as to realize the information transmission between each type of communication antenna module and the communication host. However, as the distance between the FM antenna module, the GPS antenna module and the communication host increases, the two communication cables also need to be lengthened, which undoubtedly increases the installation cost and also increases the energy loss in the transmission process during the communication process. At the same time, in some use occasions with space restrictions and weight restrictions, the space design and weight design are further compressed.

[0045] In order to solve the problem of high energy loss in the multi-channel communication process when the FM antenna module and the GPS antenna module need to maintain an installation distance from the communication host, the present application provides the following embodiments to solve the above problem:

[0046] This embodiment provides a signal receiving circuit, such as Figure 2 As shown in FIG. 1 , it is a structural diagram of the circuit of this embodiment. The signal receiving circuit of this embodiment may include:

[0047] GPS antenna module 21, FM antenna module 22, single channel transmission module 23, identification circuit 24;

[0048] The GPS antenna module 21 is used to receive GPS signals and pre-process the GPS signals to generate first GPS signals;

[0049] The FM antenna module 22 is used to receive the FM signal and pre-process the FM signal to generate a first FM signal;

[0050] The single-channel transmission module 23 is connected to the GPS antenna module 21 and the FM antenna module 22 at the same time, and is used to transmit the first GPS signal and the first FM signal to the identification circuit;

[0051] The identification circuit is used to identify signal information in the first GPS signal and the first FM signal.

[0052] In view of the problem that the multi-channel transmission mode in the prior art solution consumes a high amount of signal transmission energy due to the influence of the installation positions of the FM antenna module and the GPS antenna module, this embodiment proposes that the first GPS signal and the first FM signal respectively received by the GPS antenna module and the FM antenna module are transmitted through the same single-channel transmission module, and finally transmitted to the identification circuit. According to the characteristics of the GPS signal and the FM signal, the operating frequency ranges of the two signals are quite different. Therefore, the first GPS signal and the first FM signal transmitted in the same single-channel transmission module are not easily confused. After the single-channel transmission module transmits the mixed signal composed of the first GPS signal and the first FM signal, the first GPS signal and the first FM signal can also be split according to the difference in the operating frequencies between the two, and the information contained in the split first GPS signal and the first FM signal is respectively identified in the identification circuit.

[0053] In the technical solution of this embodiment, the first GPS signal and the first FM signal are transmitted through the same single transmission module without having to pass through their respective corresponding channels, which reduces energy loss during signal transmission compared to multi-channel signal transmission. At the same time, in situations where there are space or weight restrictions, the transmission channels can reduce space occupation due to the reduction of transmission channels occupied by signal transmission.

[0054] Among them, in order to facilitate the waveform recognition of the signal after the various antennas receive the signal, a low noise amplifier (LNA) will be used to amplify the signal. At the same time, the use of LNA will also make the antenna module an active antenna design, which can reduce the waveform loss when the channel transmits the antenna signal and ensure the stability of the signal during the channel transmission process. In order to cooperate with the amplifier design in the antenna module, it is generally necessary to add filters before and after the amplifier to filter out noise and reduce the interference signals in each antenna module from entering the subsequent identification circuit. In the technical solution of this embodiment, the filters added before and after the amplifier can be surface acoustic wave filters (Surface Acoustic Wave, SAW).

[0055] Exemplarily, the GPS antenna module includes a first antenna 211 , a first surface acoustic wave filter 212 , a low noise amplifier 213 , and a third surface acoustic wave filter 213 . The FM antenna module includes a second antenna 221 , an amplifier 222 , and a filter 223 .

[0056] By adopting the technical solution of this embodiment, the first GPS signal and the first FM signal generated by the preprocessing of the GPS antenna module and the FM antenna module are transmitted to the identification circuit in the communication host by using a single-channel transmission module, and the two signals are transmitted simultaneously in a single channel. Only one communication cable is needed to realize the accurate transmission of the two signals, thereby reducing the energy loss in the signal transmission process. At the same time, the design requirements of the overall circuit in the design process are also reduced. Furthermore, in some specific occasions, such as when the signal receiving circuit is installed in a vehicle, a communication cable is reduced, which not only saves the design cost, but also reduces the space occupied by the circuit in the vehicle, reduces the weight of the vehicle, and further realizes the energy consumption of the vehicle during operation.

[0057] In an optional embodiment, the single-channel transmission module 23 includes:

[0058] A combining module 231, a branching module 232, a single-channel transmission cable 233, a first filtering circuit 234 and a second filtering circuit 235;

[0059] The combining module 231 is connected to the GPS antenna module 21 and the FM antenna module 22 respectively, and is used to combine the first GPS signal and the first FM signal into a target transmission signal;

[0060] The single-channel transmission cable 233 is respectively connected to the combining module 231 and the splitting module 232, and is used to transmit the target transmission signal to the splitting module 232;

[0061] The branching module 232 is connected to the first filter circuit 234 through the first output terminal and connected to the second filter circuit 235 through the second output terminal, and is used to divide the target transmission signal into a second GPS signal and a second FM signal, and transmit the second GPS signal to the first filter circuit 234 and transmit the second FM signal to the second filter circuit 235;

[0062] The first filter circuit 234 is connected to the receiving circuit, and is used to filter the second GPS signal, generate a third GPS signal, and transmit the third GPS signal to the identification circuit 24;

[0063] The second filter circuit 235 is connected to the receiving circuit, and is used for filtering the second FM signal to generate a third FM signal, and transmitting the third FM signal to the identification circuit 24 .

[0064] The content of this embodiment specifically describes the specific structure and function of the single-channel transmission module, that is, the single-channel transmission module includes: a combining module, a branching module, a single-channel transmission cable, a first filter circuit, and a second filter circuit. Among them, the combining module realizes the merging of the first GPS signal and the first FM signal, so that the two signals are merged into one signal, so that the two signals can be transmitted through the single-channel transmission cable. After the signal is merged and the merged signal is transmitted through the single-channel transmission cable, the branch signal is used to divide the signal, the merged signal transmitted through the single-channel transmission cable is restored, and the filtering action of each filter circuit is performed, and then the identification of various types of signals is further realized.

[0065] The technical solution of this embodiment proposes to combine the first GPS signal and the second FM signal according to the combining module, obtain the target transmission signal, and use the single-channel transmission cable to realize two types of signal transmission of the target transmission signal. At the same time, after the target transmission signal is successfully transmitted, the target transmission signal is restored by using the branch signal, and the subsequent second GPS signal and the second FM signal are divided and identified.

[0066] In an optional embodiment, the combining module 231 includes:

[0067] A first capacitor C1 and a first inductor L1;

[0068] The first end of the first capacitor C1 is connected to the GPS antenna module 21 , the second end of the first capacitor C1 is connected to the first end of the first inductor L1 , the second end of the first inductor L1 is connected to the FM antenna module 22 , and the second end of the first capacitor C1 is connected to the single-channel transmission cable 233 .

[0069] In the content of this embodiment, for the combining module, this embodiment adopts a filter circuit composed of discrete components such as inductors and capacitors to realize the merging of the first GPS signal and the first FM signal. In the content of this embodiment, based on the different frequencies of the GPS signal and the FM signal, the capacitor "passes high frequencies and blocks low frequencies", and the inductor "passes low frequencies and blocks high frequencies", and the capacitor and inductor have different conduction and blocking characteristics for high and low frequency signals respectively. The first GPS signal and the first FM signal are filtered by capacitors and inductors respectively, and the two signals are merged into the target transmission signal, so that in the target transmission signal finally transmitted by a single-channel transmission cable, the frequency difference between the first GPS signal and the first FM signal is more obvious and not easy to be confused.

[0070] In the content of this embodiment, in order to realize the merging of two signals, a filter circuit is formed by discrete devices such as inductors and capacitors. It can be predicted that in other optional embodiments, there are other combinations or integrated filters to realize the filtering and merging of the first GPS signal and the first FM signal. All filters that can be used to realize the merging of the first GPS signal and the first FM signal into one signal to realize filtering and merging are within the protection scope of this embodiment.

[0071] In an optional embodiment, the branching module 232 includes:

[0072] A second capacitor C2 and a second inductor L2;

[0073] The first end of the second capacitor C2 is connected to the first filter circuit, the second end of the second capacitor C2 is connected to the first end of the second inductor L2, the second end of the second inductor L2 is connected to the second filter circuit, and the second end of the second capacitor C2 is connected to the single-channel transmission cable 233.

[0074] After the first GPS signal and the first FM signal are merged and transmitted, in order to continue to realize the GPS function and the FM function respectively, the target transmission signal needs to be divided so that the divided second GPS signal and the second FM signal can be accurately recognized by the subsequent recognition circuit. On the basis of the above-mentioned embodiment using discrete devices such as inductors and capacitors to form a filter circuit to realize signal merging, the technical solution of this embodiment also uses discrete devices such as inductors and capacitors to form a filter circuit to synchronously realize the division of the signal, and generate a second GPS signal and a second FM signal. In other words, in order to realize accurate restoration of the signal, it is necessary to ensure that the combining circuit and the branching circuit are corresponding circuits. If the combining signal is modified to other types of integrated filters, the branching signal must also be modified to the corresponding integrated filter.

[0075] By adopting the technical solution of this embodiment, the target transmission signal is divided by designing a branch circuit, so that the divided signal can continue to be accurately identified by the corresponding type of identification circuit. At the same time, there is a mutual correspondence between the branch signal and the combined signal, which can maximize the information integrity of the second GPS signal and the second FM signal to be close to the first GPS signal and the first FM signal, thereby ensuring the accuracy of the signal.

[0076] In an optional embodiment, the first filtering circuit 234 includes:

[0077] A third capacitor C3, a fourth capacitor C4, a third inductor L3 and a fourth inductor L4;

[0078] The first end of the third inductor L3 serves as the input end of the first filter circuit 234 and is connected to the first output end of the branch module 232. The second end of the third inductor L3 is grounded. The first end of the third inductor L3 is connected to the first end of the third capacitor C3. The second end of the third capacitor C3 is connected to the first end of the fourth inductor L4. The second end of the fourth inductor L4 is grounded. The first end of the fourth inductor L4 is connected to the first end of the fourth capacitor C4. The second end of the fourth capacitor C4 serves as the output end of the first filter circuit 234 and is connected to the identification circuit 24.

[0079] Before realizing the recognition of the second GPS signal, the present embodiment further proposes to design a first filter circuit to filter the signal of a specific frequency in the second GPS signal. In order to prevent the second GPS signal generated during the combining, transmission and branching process from containing signals of other frequencies, the present embodiment proposes to further filter the signal. Exemplarily, when the second GPS signal is doped with some FM signals, the first filter circuit of the present embodiment can be used to filter the FM signal (65MHz to 108MHz) in the preset frequency band, thereby ensuring the purity of the GPS signal and improving the accuracy of the GPS signal.

[0080] In an optional embodiment, the second filtering circuit 235 includes:

[0081] A fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and a fifth inductor L5;

[0082] The first end of the fifth capacitor C5 serves as the input end of the second filter circuit 235 and is connected to the second output end of the branch module 232. The second end of the fifth capacitor C5 is connected to the first end of the sixth capacitor C6. The second end of the sixth capacitor C6 is grounded. The first end of the sixth capacitor C6 is connected to the first end of the fifth inductor L5. The second end of the fifth inductor L5 is connected to the first end of the seventh capacitor C7. The second end of the seventh capacitor C7 is grounded. The first end of the seventh capacitor C7 serves as the output end of the second filter circuit 235 and is connected to the identification circuit.

[0083] Before realizing the second FM signal recognition, the present embodiment further proposes to design a second filter circuit to filter the signal of a specific frequency in the second FM signal. In order to prevent the second FM signal generated in the process of combining, transmitting and branching from containing signals of other frequencies, the present embodiment proposes to further filter the signal. Exemplarily, when the second FM signal is doped with some noise, the second filter circuit of the present embodiment can be used to filter low-frequency noise and DC signals, as well as high-frequency noise, thereby ensuring the purity of the FM signal and improving the accuracy of the FM signal.

[0084] In a possible embodiment, the identification circuit 24 includes:

[0085] GPS identification module 241, FM identification module 242;

[0086] The output end of the first filter circuit 234 is connected to the input end of the GPS identification module 241;

[0087] An output terminal of the second filter circuit 235 is connected to an input terminal of the FM identification module 242 .

[0088] In this embodiment, the identification circuit is further divided according to the signal type. In order to realize the signal recognition of the third GPS signal and the third FM signal, a GPS identification module and an FM identification module are further confirmed in the identification circuit to realize the signal corresponding recognition of the GPS signal and the FM signal respectively.

[0089] Based on the signal receiving circuit provided above, this embodiment provides a signal receiving device, which is used to carry the signal receiving circuit provided by any of the above embodiments.

[0090] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of the present application.

[0091] Based on the above Figure 2 The circuit shown in the figure, in order to achieve the above purpose, the embodiment of the present application also provides an electronic device, which can be configured on the vehicle (such as a new energy vehicle) side, and the device includes at least one processor and a memory connected to the at least one processor in communication; the memory is used to store instructions that can be executed by at least one processor, and the instructions are executed by at least one processor. The processor is used to execute a computer program to control the above Figure 2 The circuit shown.

[0092] Optionally, the above-mentioned physical device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0093] Those skilled in the art will appreciate that the above-mentioned physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different arrangements of components.

[0094] Based on the above electronic device, the embodiment of the present application further provides a vehicle, which may specifically include: Figure 2 The device shown in the figure or the electronic device as described above. The vehicle can be a new energy vehicle or a traditional vehicle.

[0095] Through the description of the above implementation methods, the technicians in this field can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform, or by hardware. By applying the circuit of this embodiment, the circuit includes: a GPS antenna module, an FM antenna module, a single-channel transmission module, and an identification circuit; the GPS antenna module is used to receive the GPS signal, and pre-process the GPS signal to generate a first GPS signal; the FM antenna module is used to receive the FM signal, and pre-process the FM signal to generate a first FM signal; the single-channel transmission module is connected to the GPS antenna module and the FM antenna module at the same time, and is used to transmit the first GPS signal and the first FM signal to the identification circuit. In the circuit of the present application, the first GPS signal and the first FM signal generated by the GPS antenna module and the FM antenna module are transmitted through a single-channel transmission module, so that the first GPS signal and the first FM signal do not need to be transmitted through at least two transmission cables. Compared with multi-channel signal transmission, the energy loss in the signal transmission process is reduced. At the same time, in the use occasions where there are space or weight restrictions, the technical solution of the present application is adopted because the two signals are transmitted through the single-channel transmission module, and the transmission cable is reduced, which can save the occupied space and overall weight of the circuit.

[0096] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0097] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A signal receiving circuit, characterized in that: include: GPS antenna module, FM antenna module, single-channel transmission module, identification circuit; The GPS antenna module is used to receive a GPS signal and pre-process the GPS signal to generate a first GPS signal; The FM antenna module is used to receive an FM signal and pre-process the FM signal to generate a first FM signal; The single-channel transmission module is connected to the GPS antenna module and the FM antenna module at the same time, and is used to transmit the first GPS signal and the first FM signal to the identification circuit; The identification circuit is used to identify signal information in the first GPS signal and the first FM signal.

2. The circuit according to claim 1, characterized in that The single-channel transmission module comprises: A combining module, a branching module, a single-channel transmission cable, a first filtering circuit and a second filtering circuit; The combining module is connected to the GPS antenna module and the FM antenna module respectively, and is used to combine the first GPS signal and the first FM signal into a target transmission signal; The single-channel transmission cable is respectively connected to the combining module and the branching module, and is used to transmit the target transmission signal to the branching module; The branching module is connected to the first filter circuit via a first output terminal and connected to the second filter circuit via a second output terminal, and is used to divide the target transmission signal into a second GPS signal and a second FM signal, and transmit the second GPS signal to the first filter circuit, and transmit the second FM signal to the second filter circuit; The first filtering circuit is connected to the receiving circuit, and is used to filter the second GPS signal, generate a third GPS signal, and transmit the third GPS signal to the identification circuit; The second filtering circuit is connected to the receiving circuit, and is used for filtering the second FM signal to generate a third FM signal, and transmitting the third FM signal to the identification circuit.

3. The circuit according to claim 2, characterized in that The combining module comprises: a first capacitor and a first inductor; The first end of the first capacitor is connected to the GPS antenna module, the second end of the first capacitor is connected to the first end of the first inductor, the second end of the first inductor is connected to the FM antenna module, and the second end of the first capacitor is connected to the single-channel transmission cable.

4. The circuit according to claim 2, characterized in that The branching module comprises: a second capacitor and a second inductor; The first end of the second capacitor is connected to the first filter circuit, the second end of the second capacitor is connected to the first end of the second inductor, the second end of the second inductor is connected to the second filter circuit, and the second end of the second capacitor is connected to the single-channel transmission cable.

5. The circuit according to claim 2, characterized in that The first filtering circuit comprises: a third capacitor, a fourth capacitor, a third inductor and a fourth inductor; The first end of the third inductor serves as the input end of the first filtering circuit and is connected to the first output end of the shunt module. The second end of the third inductor is grounded. The first end of the third inductor is connected to the first end of the third capacitor. The second end of the third capacitor is connected to the first end of the fourth inductor. The second end of the fourth inductor is grounded. The first end of the fourth inductor is connected to the first end of the fourth capacitor. The second end of the fourth capacitor serves as the output end of the first filtering circuit and is connected to the identification circuit.

6. The circuit according to claim 2, characterized in that The second filtering circuit comprises: a fifth capacitor, a sixth capacitor, a seventh capacitor and a fifth inductor; The first end of the fifth capacitor serves as the input end of the second filtering circuit and is connected to the second output end of the shunt module. The second end of the fifth capacitor is connected to the first end of the sixth capacitor, the second end of the sixth capacitor is grounded, the first end of the sixth capacitor is connected to the first end of the fifth inductor, the second end of the fifth inductor is connected to the first end of the seventh capacitor, the second end of the seventh capacitor is grounded, and the first end of the seventh capacitor serves as the output end of the second filtering circuit and is connected to the identification circuit.

7. The circuit according to claim 2, characterized in that The identification circuit comprises: GPS identification module, FM identification module; The output end of the first filter circuit is connected to the input end of the GPS identification module; The output end of the second filtering circuit is connected to the input end of the FM identification module.

8. A signal receiving device, characterized in that: The signal receiving device is equipped with the signal receiving circuit as described in any one of claims 1-7.

9. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can control the circuit according to any one of claims 1 to 7.

10. A vehicle, characterized in that: The vehicle is equipped with the device according to claim 8 or the electronic device according to claim 9.

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