Automobile intelligent cockpit antenna system
By designing an intelligent automotive cockpit antenna system, the problems of multi-antenna compatibility and isolation and mutual interference in a small space for vehicle-mounted CPE antennas are solved, stable signal transmission and compact installation of equipment are achieved, and the service life is improved.
Patent Information
- Application Number
- CN202211655928.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-22
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2042-12-22
AI Technical Summary
There are challenges in achieving multi-antenna compatibility and controlling isolation and mutual interference between antennas in a small space for vehicle-mounted CPE antennas.
An intelligent automotive cockpit antenna system is designed, including a cockpit shell, an intelligent control panel, a first antenna, and a second antenna. By fixedly connecting the antenna to the cockpit shell, an LC filter circuit and a radio frequency circuit are provided, Wi-Fi and Bluetooth modules are used for wireless communication, and the signal transfer function is processed by a matching module and an attachment module to achieve stable signal transmission.
It enables the compact installation of multiple antennas in the limited space of a car, avoids signal interference, improves the reliability and stability of signal reception and transmission, and extends the service life.
Smart Images

Figure CN115863963B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle-mounted antennas, in particular to an intelligent automobile cockpit antenna system. BACKGROUND
[0002] CPE (customer premise equipment) is a kind of mobile signal receiving and wireless wifi signal forwarding mobile signal access device. CPE products have the characteristics of multi-antenna (5G 4X4 MIMO, WIFI X4), multi-band (617~960, 1710~5000MHz) and the like. Vehicle-mounted CPE needs to realize multi-antenna compatibility in a small size space, and needs to control the isolation interference between antennas and the like, which is a great challenge to the antenna. SUMMARY
[0003] In order to solve the above technical problems, the present application provides an intelligent automobile cockpit antenna system, which comprises a cockpit shell, an intelligent control board, a first antenna and a second antenna.
[0004] The intelligent control board is installed in the cockpit shell, and the first antenna and the second antenna are symmetrically installed on the same outer side of the cockpit shell.
[0005] The first antenna and the second antenna are electrically connected with the intelligent control board respectively.
[0006] Optionally, the first antenna and the second antenna both comprise a long radiation branch, a short radiation branch and a mounting plate connected with each other.
[0007] The mounting plate is connected with the cockpit shell through bolts, and the long radiation branch is parallel to the outer side of the mounting plate or the cockpit shell. The long radiation branch is connected with the mounting plate through a support plate.
[0008] The short radiation branch comprises an L-shaped short radiation branch and a T-shaped short radiation branch. The L-shaped short radiation branch is located below the long radiation branch and is fixed vertically on the mounting plate. The T-shaped short radiation branch is arranged vertically below the long radiation branch, and one end of the T-shaped head of the T-shaped short radiation branch is fixedly connected with the long radiation branch. The upper end of the short radiation branch does not exceed the long radiation branch, the lower end of the short radiation branch does not exceed the mounting plate, and the left and right sides of the short radiation branch do not exceed the left and right sides of the long radiation branch.
[0009] The other end of the T-shaped head of the T-shaped short radiation branch is connected with one end of a signal transmission line, and the other end of the signal transmission line is connected with the intelligent control board.
[0010] Optionally, the first antenna and the second antenna are both provided with an antenna cover, and the antenna cover is clamped with the cockpit shell.
[0011] Optionally, the first antenna and the second antenna are both made of white copper plate; the first antenna and the second antenna are connected with the intelligent control board by signal transmission lines, the core of the signal transmission line is made of silver-plated copper wire; the radome is made of ABS material; the cabin shell is made of aluminum alloy material; the main body of the intelligent control board is made of FR4 material.
[0012] Optionally, the first antenna and the second antenna are both configured with LC filter circuit on the intelligent control board; the LC filter circuit comprises a capacitor C1, a capacitor C2, a capacitor C3, an inductor L1, an inductor L2 and a resistor R1.
[0013] The positive electrode of the capacitor C1 is connected with the positive electrode of the capacitor C2, the negative electrode of the capacitor C2 is connected with the positive electrode of the capacitor C3 and one end of the inductor L1 respectively, the negative electrode of the capacitor C3 is connected with the first antenna or the second antenna; the negative electrode of the capacitor C1 and the other end of the inductor L1 are connected with GND.
[0014] The inductor L2 and the resistor R1 are connected in parallel and both ends are connected with GND.
[0015] Optionally, the intelligent control board comprises a WIFI module and a Bluetooth module, the WIFI module is used for WIFI wireless communication, and the Bluetooth module is used for data transmission in the Bluetooth mode.
[0016] Optionally, the intelligent control board comprises a radio frequency circuit, the radio frequency circuit comprises a digital phase discriminator, a loop filter, a voltage controlled oscillator, a microstrip line coupler, a mixer, a filter and a frequency divider which are connected in a ring shape successively;
[0017] The digital phase discriminator is used for connecting a control chip and is used for phase-locked loop; the filter is an active proportional integral filter.
[0018] Further comprising an amplification circuit, the input end of the amplification circuit is connected with the microstrip line coupler, and the output end of the amplification circuit is used for outputting a local oscillator signal.
[0019] Optionally, the amplification circuit comprises a capacitor C4, a capacitor C5, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a triode T1.
[0020] The negative electrode of the capacitor C4 is used as a signal input end, the positive electrode of the capacitor C4 is connected with one end of the resistor R2 and the base of the triode T1 respectively, the other end of the resistor R2 is connected with one end of the resistor R3 and one end of the resistor R4 respectively, the emitter of the triode T1 is connected with one end of the resistor R5 and the positive electrode of the capacitor C5 respectively, the negative electrode of the capacitor C5 is connected with one end of the resistor R6, the other end of the resistor R4, the other end of the resistor R5 and the other end of the resistor R6 are grounded, and the other end of the resistor R3 and the collector of the triode T1 are connected and used as a signal output end.
[0021] Optionally, the WIFI module comprises:
[0022] The receiving submodule is configured to receive and save the data signal filtered from the first antenna or the second antenna;
[0023] The parsing submodule is configured to parse the data signal according to the preset parsing rule;
[0024] The management submodule is configured to switch the parsing control performed by the parsing submodule to be permitted according to the preset parsing rule when the parsing submodule performs the parsing;
[0025] The recovery submodule is configured to start the recovery mode according to the permitted information of the management submodule when the signal encounters unexpected interruption or delay, and perform the recovery processing to re-implement the signal transmission after the start.
[0026] Optionally, the intelligent control board comprises:
[0027] The matching module is configured to extract the first frequency band characteristics from the correlation transfer function of the first antenna signal processing module, extract the second frequency band characteristics except the first frequency band from the correlation transfer function of the second antenna signal processing module, perform the matching processing on the first frequency band characteristics and the second frequency band characteristics, and generate the correlation transfer function of the WIFI module according to the matching processing condition;
[0028] The appending module is configured to append the reverberation component separated from the head pulse response of the correlation transfer function of the first antenna signal processing module and the correlation transfer function of the second antenna signal processing module to the correlation transfer function of the WIFI module.
[0029] The automobile intelligent cockpit antenna system of the present application can protect the intelligent control board by arranging the cockpit shell to accommodate the intelligent control board, prevent dust, and improve the service life. The first antenna and the second antenna are fixedly connected with the cockpit shell to realize the overall integration of the automobile intelligent cockpit antenna system, and the first antenna and the second antenna are spaced apart by a certain distance to realize compact structure under the condition of ensuring signal receiving and sending, so that the product can be conveniently installed in the limited space of the automobile, solve the problem of accommodating the vehicle-mounted CPE in a small size space, realize the compatibility of multiple antennas, control the isolation requirement between antennas, and avoid signal interference.
[0030] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purposes and other advantages of the present application can be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings.
[0031] The technical solutions of the present application will be further described in detail below with the help of the drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0033] Figure 1 A perspective view of an automotive intelligent cockpit antenna system according to an embodiment of the present invention;
[0034] Figure 2 This is a schematic structural diagram of the first antenna and the second antenna used in an embodiment of the intelligent vehicle cockpit antenna system of the present invention;
[0035] Figure 3 A schematic structural diagram of a radome used in an embodiment of the intelligent automotive cockpit antenna system of the present invention;
[0036] Figure 4 This is a schematic diagram of an LC filter circuit used in an embodiment of the automotive intelligent cockpit antenna system of the present invention;
[0037] Figure 5 A schematic diagram of a radio frequency circuit used in an embodiment of the automotive intelligent cockpit antenna system of the present invention;
[0038] Figure 6 A schematic diagram of an amplifying circuit used in an embodiment of the intelligent vehicle cockpit antenna system of the present invention;
[0039] Figure 7 This is a schematic 3D diagram of an embodiment of the automotive intelligent cockpit antenna system of the present invention, with the antenna cover removed;
[0040] Figure 8 This is a three-dimensional schematic diagram of a product with a radome in an embodiment of the automotive intelligent cockpit antenna system of the present invention. DETAILED DESCRIPTION
[0041] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0042] like Figures 1-8 As shown, an embodiment of the present invention provides an automobile intelligent cockpit antenna system, comprising a cockpit shell 1, an intelligent control panel 2, a first antenna 3 and a second antenna 4;
[0043] The intelligent control panel 2 is installed in the cockpit shell 1, and the first antenna 3 and the second antenna 4 are located on the same outer side of the cockpit shell 1 and are installed symmetrically;
[0044] The first antenna 3 and the second antenna 4 are electrically connected to the intelligent control board 2 respectively.
[0045] The working principle and beneficial effects of the technical solution are as follows: the intelligent control board is accommodated in the cabin shell to protect the intelligent control board, prevent dust, and prolong the service life. The first antenna and the second antenna are fixedly connected with the cabin shell to realize overall integration of the automobile intelligent cabin antenna system, set a distance between the first antenna and the second antenna, realize compact structure under the condition of guaranteeing signal receiving and sending, and enable the product to be conveniently installed in the limited space of the automobile, thereby solving the problem of accommodating the vehicle-mounted CPE in a small size space. The multi-antenna compatibility is realized, the isolation requirement between the antennas is controlled, and signal interference is avoided.
[0046] In one embodiment, as shown in Figure 1 and Figure 2 , the first antenna 3 and the second antenna 4 each include a long radiation branch 31, a short radiation branch, and a mounting plate 34 connected with each other;
[0047] The mounting plate 34 is connected with the cabin shell 1 by bolts, and the long radiation branch 31 is parallel to the outer side of the mounting plate 34 or the cabin shell 1. The long radiation branch 31 is connected with the mounting plate 34 by a support plate 35, and the long radiation branch 31 is a 2.4G radiation branch;
[0048] The short radiation branch includes an L-shaped short radiation branch 33 and a T-shaped short radiation branch 32. The L-shaped short radiation branch 33 is located below the long radiation branch 31 and is fixedly connected with the mounting plate 34 perpendicularly. The T-shaped short radiation branch 32 is perpendicularly arranged below the long radiation branch 31, and one end of the T-shaped head of the T-shaped short radiation branch 32 is fixedly connected with the long radiation branch 31. The upper end of the short radiation branch does not exceed the long radiation branch 31, the lower end of the short radiation branch does not exceed the mounting plate 34, and the left and right sides of the short radiation branch do not exceed the left and right sides of the long radiation branch 31.
[0049] The working principle and beneficial effects of the technical solution are as follows: the T-shaped short radiation branch in the present scheme can be a 5.8G radiation branch, the other end of the T-shaped head of the T-shaped short radiation branch is connected with one end of a signal transmission line 5, and the other end of the signal transmission line 5 can be connected with the intelligent control board 2 by using an IPEX first-generation terminal. The first antenna and the second antenna adopted in the present scheme each include a long radiation branch and two short radiation branches, the receiving and sending of signals of different frequency bandwidths are realized, the frequency bandwidth is expanded, the two short radiation branches are arranged between the long radiation branch and the mounting plate in structure, and the volume of the antenna as a whole is smaller. The mounting plate and the cabin shell are connected by bolts, and the connection can realize the grounding effect of the antenna.
[0050] In one embodiment, as shown in Figure 3 , the first antenna 3 and the second antenna 4 are each provided with an antenna cover 6, the antenna cover 6 is connected with the cabin shell 1 by clamping or bolting, and the first antenna 3 and the second antenna 4 are each located inside the antenna cover 6.
[0051] The first antenna 3 and the second antenna 4 are both made of white copper sheet; the core of the signal transmission line 5 is made of silver-plated copper wire; the radome 6 is made of ABS plastic or PC plastic; the cabin shell 1 is made of aluminum alloy material; and the main body of the intelligent control board 2 is made of FR4 material.
[0052] The working principle and beneficial effects of the above technical solution are that: by setting the radomes for the first antenna and the second antenna, the scheme can prevent dust accumulation on the antenna surface from affecting the receiving and sending effect of the signal; the radome and the antenna can be installed and fixed by the same bolt, which reduces the material, reduces the weight, and reduces the assembly workload; the white copper sheet is used to make the antenna, which is not easy to break during manufacturing, and the signal transmission reaction is good; the radome made of ABS plastic or PC plastic will not form signal shielding and will not hinder signal transmission; and the aluminum alloy material can reduce the weight while ensuring the protection strength.
[0053] In one embodiment, as shown in Figure 4 The first antenna and the second antenna are both configured with LC filter circuits on the intelligent control board; the LC filter circuit includes a capacitor C1, a capacitor C2, a capacitor C3, an inductor L1, an inductor L2, and a resistor R1.
[0054] The positive electrode of the capacitor C1 and the positive electrode of the capacitor C2 are connected, the negative electrode of the capacitor C2 is connected with the positive electrode of the capacitor C3 and one end of the inductor L1 respectively, and the negative electrode of the capacitor C3 is connected with the first antenna or the second antenna; the negative electrode of the capacitor C1 and the other end of the inductor L1 are connected with GND, and the first antenna and the second antenna are connected with GND through two bolt holes for installation.
[0055] The inductor L2 and the resistor R1 are connected in parallel and both ends are connected with GND.
[0056] The working principle and beneficial effects of the above technical solution are that: the LC filter circuit set in the scheme uses a combination of filter capacitors, reactors, and resistors, which is connected with the antenna, can filter one or more harmonics, and also has the function of considering reactive compensation; the signal attenuation of the LC filter circuit is small, which is conducive to subsequent signal processing.
[0057] In one embodiment, the intelligent control board includes a WIFI module and a Bluetooth module, the WIFI module is used for WIFI wireless communication, and the Bluetooth module is used for data transmission in the Bluetooth mode.
[0058] The working principle and beneficial effects of the above technical solution are that: by setting the WIFI module and the Bluetooth module on the intelligent control board, the scheme allows wireless connection in two ways of WIFI and Bluetooth, which is convenient for debugging and setting after system installation.
[0059] In one embodiment, as shown in Figure 5 The intelligent control board includes a radio frequency circuit, which includes a digital phase discriminator connected in a ring shape in sequence, a loop filter, a voltage controlled oscillator, a microstrip coupler, a mixer, a filter and a frequency divider;
[0060] The digital phase discriminator is used to connect the control chip and is used for phase-locked loop; the filter uses an active proportional integral filter;
[0061] The amplification circuit includes a capacitor C4, a capacitor C5, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a triode T1.
[0062] The working principle and beneficial effects of the above technical solution are as follows: the digital phase discriminator can combine high working frequency and ultra-low phase noise together, can provide a synthesizer with very wide loop bandwidth and low frequency division number, so as to realize fast switching and extremely low phase noise, integrate in the loop filter, and cooperate to generate an output voltage, which controls the voltage controlled oscillator to produce a wide range of frequencies.
[0063] In one embodiment, the loop filter uses a digital phase-locked loop model for signal processing, and the digital phase-locked loop model is as follows:
[0064]
[0065] In the above formula, G1 represents the first filter coefficient of the loop filter; K0 represents the gain of the digital oscillator; K d represents the gain of the digital phase discriminator; γ represents the damping coefficient of the phase-locked loop; ω n represents the angular frequency of free vibration; T s represents the equivalent noise bandwidth; G2 represents the second filter coefficient of the loop filter;
[0066] The working principle and beneficial effects of the above technical solution are as follows: the above digital phase-locked loop model is used in the loop filter, which cooperates with the radio frequency circuit to process signals, can realize denoising of signals, can realize stability of signals, can avoid signal discontinuity, can keep phase from deviating, can make signal fidelity good, and can improve reliability of signal transmission.
[0067] In one embodiment, as shown in Figure 6 The amplification circuit includes a capacitor C4, a capacitor C5, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a triode T1.
[0068] The negative pole of the capacitor C4 is used as a signal input end, the positive pole of the capacitor C4 is connected with one end of the resistor R2 and the base of the transistor T1 respectively, the other end of the resistor R2 is connected with one end of the resistor R3 and one end of the resistor R4 respectively, the emitter of the transistor T1 is connected with one end of the resistor R5 and the positive pole of the capacitor C5 respectively, the negative pole of the capacitor C5 is connected with one end of the resistor R6, the other end of the resistor R4, the other end of the resistor R5 and the other end of the resistor R6 are grounded, and the other end of the resistor R3 and the collector of the transistor T1 are connected and used as a signal output end.
[0069] The working principle and beneficial effects of the technical solution are as follows: the amplification circuit in the scheme can be arranged at the output end of the radio frequency circuit; the amplification circuit can amplify the signal, so that the signal is enhanced; the amplification circuit in the scheme can also be equivalent to a voltage-controlled current source, which can realize the stability of the signal on the basis of amplifying the signal.
[0070] In one embodiment, the WIFI module comprises:
[0071] The receiving submodule is configured to receive and save the data signal filtered from the first antenna or the second antenna;
[0072] The analyzing submodule is configured to analyze the data signal according to a preset analysis rule;
[0073] The management submodule is configured to switch the analysis control performed by the analyzing submodule to being permitted according to the preset analysis rule when the analyzing submodule performs the analysis;
[0074] The recovery submodule is configured to start a recovery mode and perform a recovery process to re-implement the signal transmission according to the permitted information of the management submodule when the signal encounters an unexpected interruption or delay.
[0075] The working principle and beneficial effects of the technical solution are as follows: the analyzing submodule is configured to analyze the received data signal, which can make the information more suitable for encoding and transmission; the management submodule is configured to control the analyzing submodule, which can guarantee the security of the data information processing; the recovery submodule is configured to automatically implement recovery when an accident occurs, which, in combination with the saving of the data signal, can prevent the omission of the data signal processing and transmission and guarantee the integrity and fidelity of the data signal transmission; wherein, the unexpected interruption includes an interruption or delay in the signal sending state due to the deterioration of the sending environment, and a state in which the analyzing submodule cannot analyze all data signals.
[0076] In one embodiment, the intelligent control panel comprises:
[0077] The matching module is used for extracting the first frequency band characteristics from the correlation transfer function of the first antenna signal processing module, extracting the second frequency band characteristics except the first frequency band from the correlation transfer function of the second antenna signal processing module, performing matching processing on the first frequency band characteristics and the second frequency band characteristics, and generating the correlation transfer function of the WIFI module according to the matching processing condition;
[0078] The appending module is used for appending the reverberation components of the head pulse response of the correlation transfer functions of the first antenna signal processing module and the second antenna signal processing module to the correlation transfer function of the WIFI module.
[0079] The working principle and beneficial effects of the above technical scheme are as follows: the scheme extracts the frequency band characteristics from the correlation transfer functions of the two antenna signal processing modules through the matching module, performs matching processing on the matching module, generates the correlation transfer function of the WIFI module, and can make the two antenna signal processing modules more coordinated for signal transmission; the appending module appends the reverberation components of the head pulse response of the correlation transfer functions of the two antenna signal processing modules to the correlation transfer function of the WIFI module, which can further reduce or eliminate the mutual interference of the two antenna signal processing modules for signal transmission, improve the signal transmission reliability, and realize stable antenna signal transmission.
[0080] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.
Claims
1. An intelligent car cockpit antenna system, characterized in that: It includes a cockpit shell, an intelligent control panel, a first antenna and a second antenna; The intelligent control panel is installed in the cockpit shell, and the first antenna and the second antenna are located on the same outer side of the cockpit shell and are symmetrically installed; The first antenna and the second antenna are electrically connected to the intelligent control board respectively; The first antenna and the second antenna both include a long radiating branch, a short radiating branch and a mounting plate connected to each other; The mounting plate is connected to the cockpit shell by bolts, and the long radiating branches are parallel to the outer side of the mounting plate or the cockpit shell; the long radiating branches are connected to the mounting plate by a supporting plate; The short radiating branches include L-shaped short radiating branches and T-shaped short radiating branches. The L-shaped short radiating branches are located below the long radiating branches and are vertically fixed on the mounting plate. The T-shaped short radiating branches are vertically arranged below the long radiating branches, and one end of the T-shaped head is fixedly connected to the long radiating branches. The upper end of the short radiating branches does not exceed the long radiating branches, the lower end of the short radiating branches does not exceed the mounting plate, and the left and right sides of the short radiating branches do not exceed the left and right sides of the long radiating branches. The other end of the T-shaped head of the T-shaped short radiation branch is connected to one end of the signal transmission line, and the other end of the signal transmission line is connected to the intelligent control board.
2. The intelligent vehicle cockpit antenna system according to claim 1, characterized in that: The first antenna and the second antenna are both equipped with antenna covers, which are snap-connected to the cabin shell.
3. The intelligent vehicle cockpit antenna system according to claim 1, characterized in that: Both the first antenna and the second antenna are made of nickel silver plates; the first antenna and the second antenna are respectively connected to the intelligent control board using signal transmission lines, and the core of the signal transmission line is made of silver-plated copper wire; the antenna cover is made of ABS material; the cockpit shell is made of aluminum alloy material; the main body of the intelligent control board is made of FR4 material.
4. The intelligent vehicle cockpit antenna system according to claim 1, characterized in that: The first antenna and the second antenna are both configured with an LC filter circuit on the intelligent control board; the LC filter circuit includes capacitor C1, capacitor C2, capacitor C3, inductor L1, inductor L2 and resistor R1; The positive electrode of capacitor C1 is connected to the positive electrode of capacitor C2, the negative electrode of capacitor C2 is connected to the positive electrode of capacitor C3 and one end of inductor L1 respectively, and the negative electrode of capacitor C3 is connected to the first antenna or the second antenna; the negative electrode of capacitor C1 and the other end of inductor L1 are connected to GND; The inductor L2 and the resistor R1 are connected in parallel and both ends are connected to GND.
5. The intelligent vehicle cockpit antenna system according to claim 1, characterized in that: The intelligent control panel includes a WIFI module and a Bluetooth module. The WIFI module is used for WIFI wireless communication, and the Bluetooth module is used for data transmission using Bluetooth.
6. The intelligent vehicle cockpit antenna system according to claim 1, characterized in that: The intelligent control board includes a radio frequency circuit, which includes a digital phase and frequency detector, a loop filter, a voltage-controlled oscillator, a microstrip line coupler, a mixer, a filter, and a frequency divider connected in a ring shape in sequence; Among them, the digital phase and frequency detector is used to connect to the control chip for phase-locked loop; the filter adopts active proportional integral filter; The device also includes an amplifier circuit, wherein the input end of the amplifier circuit is connected to the microstrip line coupler, and the output end of the amplifier circuit is used to output a local oscillation signal.
7. The intelligent vehicle cockpit antenna system according to claim 6, characterized in that: The amplifier circuit includes capacitor C4, capacitor C5, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6 and transistor T1; The negative electrode of capacitor C4 serves as a signal input terminal, the positive electrode of capacitor C4 is respectively connected to one end of resistor R2 and the base of transistor T1, the other end of resistor R2 is respectively connected to one end of resistor R3 and one end of resistor R4, the emitter of transistor T1 is respectively connected to one end of resistor R5 and the positive electrode of capacitor C5, the negative electrode of capacitor C5 is connected to one end of resistor R6, the other end of resistor R4, the other end of resistor R5 and the other end of resistor R6 are grounded, and the other end of resistor R3 is connected to the collector of transistor T1 and serves as a signal output terminal.
8. The intelligent vehicle cockpit antenna system according to claim 5, characterized in that: The WIFI module includes: A receiving submodule, configured to receive and store filtered data signals from the first antenna or the second antenna; The parsing submodule is used to parse the data signal according to the preset parsing rules; The management submodule is used to switch the parsing control performed by the parsing submodule according to the preset parsing rules to be permitted when the parsing submodule is parsing; The recovery submodule is used to start the recovery mode according to the permission information of the management submodule when the signal encounters an unexpected interruption or delay, and perform recovery processing after starting to re-implement signal transmission.
9. The intelligent vehicle cockpit antenna system according to claim 5, characterized in that: The smart control panel includes: a matching module configured to extract a first frequency band characteristic from the correlation transfer function of the first antenna signal processing module, extract a second frequency band characteristic other than the first frequency band from the correlation transfer function of the second antenna signal processing module, perform matching processing on the first frequency band characteristic and the second frequency band characteristic, and generate a correlation transfer function of the Wi-Fi module based on the matching processing result; The appending module is used to append the reverberation component separated from the head impulse response of the correlation transfer function of the first antenna signal processing module and the correlation transfer function of the second antenna signal processing module to the correlation transfer function of the WIFI module.
Citation Information
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