Automobile communication system and automobile

Abstract

The invention discloses an automobile communication system and an automobile. The automobile communication system comprises a navigation module, a mobile communication module, a wireless local area network module and a radio broadcast module, the navigation module, the mobile communication module and the wireless local area network module are arranged in an instrument panel assembly, and the radio broadcast module is arranged in an automobile tail door. According to the automobile communication system, the aerodynamic performance of the automobile can be improved.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, in particular to an automobile communication system and an automobile with the automobile communication system. Background Art

[0002] As consumers' aesthetic requirements for products become higher and higher, the simplicity of car appearance has become a major factor in appearance design. Compared with the ground antennas of cars in early years, the rise of shark fin antennas has made important progress in the appearance and size of cars.

[0003] Antenna is a kind of converter, which transforms the guided wave propagating on the transmission line into electromagnetic wave propagating in unbounded medium (usually free space), or vice versa. It is a component used to transmit or receive electromagnetic waves in radio equipment. Generally, antennas are reversible, that is, the same antenna can be used as both a transmitting antenna and a receiving antenna. The basic characteristic parameters of the same antenna as a transmitter or a receiver are the same, which is the reciprocity theorem of the antenna. The main electrical performance parameters of the antenna include gain, polarization, impedance, standing wave ratio, etc.

[0004] The shark fin antenna includes three antenna functions: AM / FM, GNSS, and LTE. However, the shark fin antenna is exposed to the outdoor environment all year round and there is a risk of loss or damage. Summary of the invention

[0005] The present invention provides a vehicle communication system, which can improve the aerodynamic performance of the vehicle.

[0006] According to an aspect of the present invention, an automobile communication system is proposed, which includes a navigation module, a mobile communication module, a wireless local area network module and a radio broadcast module. The navigation module, the mobile communication module and the wireless local area network module are arranged in a dashboard assembly, and the radio broadcast module is arranged in a tailgate of the automobile.

[0007] According to an automobile communication system provided in one aspect of the present invention, the radio broadcast module includes a radio broadcast antenna, a filter and an amplifier, the radio broadcast antenna is arranged in the rear window of the automobile, and the filter and the amplifier are arranged in the tailgate sheet metal.

[0008] According to the automobile communication system provided in one aspect of the present invention, the radio broadcasting antenna is fixed in the rear window of the automobile by a printing process.

[0009] According to the automobile communication system provided in one aspect of the present invention, the radio broadcasting antenna can also be used to heat the rear window of the automobile.

[0010] According to the automobile communication system provided in one aspect of the present invention, the navigation module and the mobile communication module are integrated together.

[0011] According to the automobile communication system provided in one aspect of the present invention, the navigation module, the mobile communication module and the wireless local area network module are arranged close to the automobile host.

[0012] According to the automobile communication system provided in one aspect of the present invention, the navigation module includes one or more of a GPS navigation module, a GLONASS navigation module, a Beidou navigation module, and a Galileo navigation module.

[0013] According to the automobile communication system provided in one aspect of the present invention, the mobile communication module includes one or more of a 3G mobile communication module, a 4G mobile communication module, and a 5G mobile communication module.

[0014] According to the automobile communication system provided in one aspect of the present invention, the wireless local area network module includes a WIFI module.

[0015] In addition, the present invention provides a vehicle having such a vehicle communication system. Since the vehicle has the vehicle communication system according to the present invention, the advantages as described above can be obtained.

[0016] The beneficial effects of the present invention include: by arranging the navigation module, the mobile communication module and the wireless local area network module in the instrument panel assembly and arranging the radio broadcasting module in the tailgate of the car, the external antenna can be eliminated, thereby improving the aerodynamic performance of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. Among them:

[0018] Figure 1 The diagram schematically shows a vehicle communication system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0020] According to one embodiment of the present invention, the automobile communication system includes a navigation module, a mobile communication module, a wireless local area network module and a radio broadcasting module, wherein the navigation module, the mobile communication module and the wireless local area network module are arranged in a dashboard assembly, and the radio broadcasting module is arranged in a tailgate of the automobile. The tailgate of the automobile includes a tailgate sheet metal and a rear window of the automobile mounted thereon. The navigation module, the mobile communication module, the wireless local area network module and the radio broadcasting module respectively include antennas for receiving signals.

[0021] The navigation module includes one or more of a GPS navigation module, a GLONASS navigation module, a Beidou navigation module, and a Galileo navigation module. The mobile communication module includes one or more of a 3G mobile communication module, a 4G mobile communication module, and a 5G mobile communication module. The wireless local area network module includes a WIFI module.

[0022] In the automobile communication system according to this embodiment, by arranging the navigation module, the mobile communication module and the wireless local area network module in the instrument panel assembly and arranging the radio broadcasting module in the tailgate of the automobile, an external antenna can be eliminated, thereby improving the aerodynamic performance of the automobile. In addition, the aesthetics of the automobile can also be improved.

[0023] According to one embodiment of the present invention, the radio broadcast module includes a radio broadcast antenna, a filter and an amplifier, wherein the radio broadcast antenna is arranged in the rear window of the car, and the filter and the amplifier are arranged in the tailgate sheet metal. For example, the radio broadcast antenna is fixed in the rear window of the car by a printing process. The radio broadcast antenna can also be used to heat the rear window of the car, that is, the radio broadcast antenna can be used as a heating wire for the rear window of the car.

[0024] According to an embodiment of the present invention, the navigation module and the mobile communication module are integrated together. For example, the navigation module and the mobile communication module are integrated into one module.

[0025] According to an embodiment of the present invention, the navigation module, the mobile communication module and the wireless LAN module are arranged close to the vehicle host (such as VCU). A feasible way is that the navigation module and the mobile communication module are connected to the central gateway, and then connected to the vehicle host (specifically the vehicle host control unit) through Ethernet; the wireless LAN module is connected to the vehicle host through a wiring harness; and the radio broadcasting module is connected to the vehicle host through a wiring harness.

[0026] In the automobile communication system according to one embodiment of the present invention, the antenna is mainly divided into three modules: 5G+GNSS, WIFI antenna, and AM / FM antenna. The 5G+GNSS and WIFI antennas are built into the car dashboard assembly, close to the location of the car host control unit; the AM / FM antenna includes an amplifier and a filter, wherein the antenna wire is arranged on the car rear window heating wire by printing, and the filter and amplifier are arranged on the rear tailgate sheet metal. The AM / FM antenna is integrated with the heating wire, and the arrangement area is large, which is conducive to improving the radio signal.

[0027] The 5G / GNSS antenna is built into the car instrument assembly, including 4 5G antennas, and the GNSS antenna is integrated on the circuit board. In order to ensure that the performance of this structure built into the car instrument assembly meets the standards, it is necessary to conduct simulation calculations on the antenna performance of this position distribution and assembly technology to reduce the interference of the antenna by surrounding parts and ensure that each antenna meets the performance requirements of the vehicle during driving.

[0028] According to an embodiment of the present invention, a vehicle communication system is Figure 1 As shown, the antenna signal is processed and finally transmitted to the car host control unit. The 4G / 5G / GNSS signal is processed by the network intelligent vehicle terminal and then sent to the car host; the AM / FM antenna is arranged on the rear window of the car. In order to eliminate the signal interference between the heating wire and the rear taillight, it needs to be filtered by a filter and then amplified by an amplifier to send the radio signal to the car host; the WIFI signal is sent directly to the car host.

[0029] This automotive communication system is suitable for communication, navigation, radio, video, audio, display and other functional requirements in the automotive field. The shark fin antenna is cancelled and replaced with a built-in hidden antenna, which optimizes the appearance design and reduces the height of the vehicle. Canceling the shark fin can effectively reduce wind resistance and noise, and improve the driving stability and comfort of the vehicle. In addition, the hidden antenna can also reduce the risk of damage to the antenna in bad weather or when washing the car, ensure the stability and durability of the communication system, and extend the service life of the antenna. Since the final signal of the antenna needs to be transmitted to the car host, and the car host is built into the car instrument assembly, therefore, compared with the shark fin antenna solution, the antenna is changed from the traditional roof layout to the car instrument assembly, which effectively reduces the length of the antenna to the host section wiring harness and reduces the cost accordingly.

[0030] According to one embodiment of the present invention, the automobile communication system is divided into three parts and independently arranged in the car, including a 4G / 5G / GNSS antenna module, a WIFI antenna module, and an AM / FM antenna module. The three modules are independently and separately built into the car to facilitate mutual signal interference. For example, the distance between the modules is greater than 300 mm, ensuring the stable performance of each antenna signal during driving.

[0031] Wireless communication systems have requirements for antennas, and antennas are the bottleneck of wireless communication systems. For automotive antennas, there are the following performance requirements: the operating frequency is getting higher; the bandwidth is increasing (absolute / relative), including impedance bandwidth, voltage standing wave ratio, gain bandwidth, polarization bandwidth (axial ratio bandwidth), ultra-wideband; gain requirements; polarization (axial ratio) requirements; radiation pattern / beam distribution, far-field phase.

[0032] The standing wave ratio is the ratio of the maximum value (peak) to the minimum value (trough) of the voltage on the transmission line, which is required to be less than 3.3. Antenna isolation refers to the degree of mutual interference between two antennas. It measures the impact of the signal transmitted by one antenna on the signal received by another antenna. The isolation requirement is less than -10dB at frequencies between 0 and 2GHz, and less than -15dB when the frequency is greater than 2GHz. The low-elevation average gain is the average value of the ratio of the antenna radiation power density to the reference antenna (usually an ideal omnidirectional antenna). Antennas 1 and 2 are the main antennas, and the average gain is required to be greater than -7dBi. Antennas 3 and 4 are secondary antennas, and the average gain is required to be greater than -11dBi.

[0033] The above-mentioned automotive communication system can meet these requirements.

[0034] The present invention also includes an automobile having an automobile communication system of any one or more of the aforementioned embodiments. The technical features and technical effects thereof correspond to the above description and will not be described in detail here.

[0035] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An automobile communication system, characterized in that: The automobile communication system comprises a navigation module, a mobile communication module, a wireless local area network module and a radio broadcasting module. The navigation module, the mobile communication module and the wireless local area network module are arranged in a dashboard assembly, and the radio broadcasting module is arranged in a tailgate of the automobile.

2. The automobile communication system according to claim 1, characterized in that: The radio broadcast module includes a radio broadcast antenna, a filter and an amplifier. The radio broadcast antenna is arranged in the rear window of the car, and the filter and the amplifier are arranged in the tailgate sheet metal.

3. The automobile communication system according to claim 2, characterized in that: The radio antenna is fixed in the rear window of the vehicle by means of a printing process.

4. The automobile communication system according to claim 2, characterized in that: The radio antenna can also be used to heat the rear window of a car.

5. The automobile communication system according to claim 1, characterized in that: The navigation module and the mobile communication module are integrated together.

6. The automobile communication system according to claim 1, characterized in that: The navigation module, the mobile communication module and the wireless local area network module are arranged close to a vehicle host.

7. The automobile communication system according to claim 1, characterized in that: The navigation module includes one or more of a GPS navigation module, a GLONASS navigation module, a Beidou navigation module, and a Galileo navigation module.

8. The automobile communication system according to claim 1, characterized in that: The mobile communication module includes one or more of a 3G mobile communication module, a 4G mobile communication module, and a 5G mobile communication module.

9. The automobile communication system according to claim 1, characterized in that: The wireless local area network module includes a WIFI module.

10. An automobile, characterized in that: The invention comprises the automobile communication system according to any one of claims 1 to 9.

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