CN110557157A

CN110557157A - vehicle-mounted terminal

Info

Publication number: CN110557157A
Application number: CN201810542632.9A
Authority: CN
Inventors: 张仁建
Original assignee: Shanghai Qinggan Intelligent Technology Co Ltd
Current assignee: Shanghai Qinggan Intelligent Technology Co Ltd
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-12-10
Anticipated expiration: 2038-05-30
Also published as: CN110557157B

Abstract

The invention provides a vehicle-mounted terminal, comprising: a main antenna for transceiving cellular wireless signals; the satellite navigation antenna is used for receiving satellite positioning signals; a cellular communication module for cellular network communication and satellite positioning; the DVR camera shooting device is used for acquiring images and/or videos around the vehicle; the first storage module is used for storing data; the main processor is used for storing the processed image and/or video to the first storage module; the CAN transceiver is used for receiving data on the CAN bus and/or transmitting the data to the CAN bus; and the microcontroller is used for carrying out protocol conversion on data interacted between the CAN transceiver and the cellular communication module. The vehicle-mounted terminal integrates the functions of the T-Box, the intelligent gateway and the automobile data recorder, saves devices with overlapped functions, effectively utilizes resources, reduces the space occupied by the devices, improves the interaction efficiency and reliability of the system, and reduces the overall development cost.

Description

Vehicle-mounted terminal

Technical Field

The invention mainly relates to the technical field of automobiles, in particular to a vehicle-mounted terminal.

Background

the Internet of vehicles is a new technology for realizing intercommunication and interconnection among vehicles, vehicles and roads, vehicles and people, vehicles and service platforms by means of information and communication technology. To implement these interworking in car networking technologies, the currently adopted technologies are usually implemented by setting a T-box (telematics box) and/or an intelligent gateway in a car.

fig. 1 is a basic block diagram of a conventional T-Box. Referring to fig. 1, the T-Box mainly includes a cellular communication module and a processor. The cellular communication module is connected with the main antenna, the diversity antenna, the satellite navigation antenna and the eSIM card so as to realize cellular communication and satellite positioning. The cellular communication module is also connected with the wireless local area network module to realize wireless local area network communication and/or sharing of the wireless local area network. The T-Box also comprises a storage module, an audio coding and decoding module and a power amplifier module, and the cellular communication module is also connected with the storage module, the audio coding and decoding module, the power amplifier module and the like so as to realize the playing of multimedia. The processor is connected with the cellular communication module and is mainly used for controlling the cellular communication module to realize various actions, such as cellular communication, satellite positioning, multimedia playing and the like. In addition, the processor also receives an ignition signal, and the ignition signal is used as a trigger signal for starting the processor to work. Of course, the T-Box also includes a power module connected to the battery to provide power to the various components in the T-Box.

Fig. 2 is a basic block diagram of a conventional intelligent gateway. Referring to fig. 2, the smart gateway mainly includes a processor, and a CAN transceiver, an ethernet switch, and a cellular communication module respectively connected to the processor. In the intelligent gateway, the processor mainly carries out protocol conversion on data interacted between any two of the CAN transceiver, the Ethernet switch and the cellular communication module. Similarly, the intelligent gateway also includes a power module connected to the battery to provide power to the components in the intelligent gateway.

In the driving process, traffic accidents such as scratch and collision occur sometimes. When a traffic accident is responsible, corresponding evidence is required to determine responsibility, and the current road monitoring and the like have dead corners, and when the traffic accident occurs in the dead corners, video evidence cannot be provided, so that the responsibility of the traffic accident is difficult to determine. In order to overcome the defect, the existing vehicle is usually provided with a vehicle data recorder, and when the vehicle runs, the vehicle records the environment in front of and/or around the vehicle so as to determine responsibility when a traffic accident occurs. Fig. 3 is a basic block diagram of a conventional drive recorder (DVR). Referring to fig. 3, the car recorder mainly includes a DVR camera, a Main Processor Unit (MPU), a Microcontroller (MCU), a memory, an internal memory, a display screen, keys, an external storage module, an acceleration sensor, a microphone, and the like. The memory, the internal memory, the display screen, the keys, the external storage module and the microphone are respectively connected with the main processor so as to record, display and other settings of the environment in front of and/or around the vehicle. The microcontroller is connected with the main processor and is mainly used for controlling the main processor to realize various functions. The acceleration sensor is connected with the microcontroller and used for sensing whether accidents such as collision occur. In addition, the microcontroller also receives an ignition signal, which acts as a trigger signal for the microcontroller, the main processor, etc. to start operating. Of course, the automobile data recorder also comprises a power supply module connected with the battery so as to supply power to all parts in the automobile data recorder.

In order to realize interconnection and driving record, the existing method is to install a T-Box, an intelligent gateway and a driving recorder on a vehicle at the same time, but the method has the disadvantages of high cost, large occupied space and the like. Therefore, a low-cost vehicle-mounted terminal is needed to realize the functions of the T-Box, the intelligent gateway and the automobile data recorder.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a vehicle-mounted terminal which has the functions of a T-Box, an intelligent gateway and a vehicle event data recorder and has the advantages of fully utilizing resources, reducing occupied space, improving system interaction efficiency and reliability, reducing overall cost and the like.

In order to solve the above technical problem, the present invention provides a vehicle-mounted terminal, including: a main antenna for transceiving cellular wireless signals; the satellite navigation antenna is used for receiving satellite positioning signals; the cellular communication module is respectively connected with the main antenna and the satellite navigation antenna and is used for cellular network communication and satellite positioning; the DVR camera shooting device is used for acquiring images and/or videos of at least one of the front, the rear, the left side and the right side of the vehicle; the first storage module is used for storing data; the main processor is respectively connected with the DVR camera device and the first storage module and is used for processing the images and/or videos acquired by the DVR camera device and storing the processed images and/or videos to the first storage module; the CAN transceiver is used for receiving data on the CAN bus and/or transmitting the data to the CAN bus; and the microcontroller is respectively connected with the cellular communication module and the CAN transceiver and is used for controlling the action of the cellular communication module and carrying out protocol conversion on data interacted between the CAN transceiver and the cellular communication module.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: the Ethernet switch is connected with the microcontroller and used for receiving and transmitting data packets conforming to an Ethernet protocol; the microcontroller is further configured to perform protocol conversion on data exchanged between any two of the CAN transceiver, the cellular communication module, and the ethernet switch.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: and the diversity antenna is connected with the cellular communication module and is used for diversity receiving and transmitting cellular wireless signals.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: the wireless local area network antenna is used for receiving and transmitting wireless local area network signals; and the wireless local area network module is respectively connected with the wireless local area network antenna and the cellular communication module and is used for realizing wireless local area network communication.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: an eSIM card connected with the cellular communication module and used for storing subscriber identification information; and/or a second storage module connected with the cellular communication module for storing data.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: and the audio coding and decoding module is connected with the cellular communication module and is used for coding and decoding audio data.

In an embodiment of the present invention, the microcontroller is further connected to the main processor, and the microcontroller is further configured to control an action of the main processor.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: the power amplification module is connected with the cellular communication module and used for amplifying the audio signal output by the cellular communication module and outputting the amplified audio signal to a loudspeaker; and the microcontroller also controls the power amplifier module.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: and the data port is connected with the microcontroller and is used for realizing data interaction between the microcontroller and external equipment.

in an embodiment of the present invention, the vehicle-mounted terminal further includes: and the acceleration sensor is connected with the microcontroller and used for sensing the acceleration of the vehicle.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: the USB port is connected with the cellular communication module and is used for realizing data interaction between the cellular communication module and external equipment; and/or LVDS port connected with the main processor for realizing data interaction between the main processor and external equipment.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: and the memory is connected with the main processor and is used for providing temporary storage space for data and/or instructions to be processed by the main processor.

In an embodiment of the present invention, the vehicle-mounted terminal further includes: the power supply module is used for providing power supply for each part in the vehicle-mounted terminal; and/or the power management module is connected with the main processor and is used for performing power management on at least one part of components in the vehicle-mounted terminal according to the instruction of the main processor.

Compared with the prior art, the invention has the following advantages:

Compared with the technical scheme that the T-Box, the intelligent gateway and the automobile data recorder are combined by the T-Box, the intelligent gateway and the automobile data recorder, the vehicle-mounted terminal provided by the invention omits a main processor with an overlapping function, a microcontroller, a power supply module and a peripheral circuit, and has the advantages of fully utilizing resources, reducing occupied space, improving system interaction efficiency and reliability, reducing overall cost and the like.

drawings

Fig. 1 is a basic block diagram of a conventional T-Box.

Fig. 2 is a basic block diagram of a conventional intelligent gateway.

fig. 3 is a basic block diagram of a conventional drive recorder.

Fig. 4 is a basic block diagram of a vehicle-mounted terminal of some embodiments of the present invention.

In the figure: 100-vehicle mounted terminal; 101-a cellular communication module; 102-a microcontroller; 103-a main processor; 104-a main antenna; 105-diversity antennas; 106-wireless local area network antenna; 107-wireless local area network module; 108-eSIM card; 109-a second storage module; 110-USB port; a 111-CAN transceiver; 112-ethernet switches; 113-a DVR camera; 114-a memory; 115-a first storage module; 116-a power management module; 117-LVDS port; 118-a data port; 119-a satellite navigation antenna; 120-audio codec module; 121-a power amplifier module; 122-an acceleration sensor; 123-power supply module.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments disclosed below.

Certain terms are used throughout the description and claims to refer to particular system components. As one skilled in the art will appreciate, different companies may refer to a component by different names. This document does not intend to distinguish between components that differ in name but not function. In the description and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to …".

as used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

Furthermore, each of the embodiments described below has one or more technical features, and thus, the use of the technical features of any one embodiment does not necessarily mean that all of the technical features of any one embodiment are implemented at the same time or that only some or all of the technical features of different embodiments are implemented separately. In other words, those skilled in the art can selectively implement some or all of the features of any embodiment or combinations of some or all of the features of multiple embodiments according to the disclosure of the present invention and according to design specifications or implementation requirements, thereby increasing the flexibility in implementing the invention.

It will be understood that when an element is referred to as being "on," "connected to," "coupled to" or "contacting" another element, it can be directly on, connected or coupled to, or contacting the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to" or "directly contacting" another element, there are no intervening elements present. Similarly, when a first component is said to be "in electrical contact with" or "electrically coupled to" a second component, there is an electrical path between the first component and the second component that allows current to flow. The electrical path may include capacitors, coupled inductors, and/or other components that allow current to flow even without direct contact between the conductive components.

As introduced in the background section, existing T-boxes, intelligent gateways, and automobile data recorders are separate modular products that each perform its corresponding function. The three module products all have the same components such as a processor (CPU), a power supply circuit, a connector, and the like. When the three module products are used for realizing the functions of the T-Box, the intelligent gateway and the automobile data recorder together, the same components in the three module products are repeated, so that the problems of hardware cost waste, more occupied space, low interaction efficiency, low reliability and the like can occur. In order to overcome the problems, the invention provides the vehicle-mounted terminal which has the functions of the T-Box, the intelligent gateway and the automobile data recorder, so that the resources can be fully utilized, the occupied space is reduced, the interaction efficiency and reliability of the system are improved, and the overall cost is reduced.

Fig. 4 is a basic block diagram of a vehicle-mounted terminal of some embodiments of the present invention. Referring to fig. 4, the in-vehicle terminal 100 may include a cellular communication module 101, a Microcontroller (MCU)102, a main processor 103, a main antenna 104, a CAN transceiver 111, a DVR camera 113, a first storage module 115, and a satellite navigation antenna 119. The microcontroller 102, the main antenna 104 and the satellite navigation antenna 119 are each connected to the cellular communication module 101. The DVR camera 113 and the first storage module 115 are connected to the main processor 103, respectively. The CAN transceiver 111 is connected to the microcontroller 102.

the primary antenna 104 may be used to transceive cellular wireless signals to enable cellular network communications in cooperation with the cellular communication module 101. In some embodiments, the cellular network may be a 2G (e.g., GSM, IS-95, IS-136, IDEN, PDC, etc.), 3G (e.g., W-CDMA, CDMA-2000, TD-SCDMA, WiMAX, etc.), 4G (e.g., LTE FDD, LTE TDD), etc. format cellular network, and accordingly, the cellular wireless signals may also be wireless signals conforming to one or more of 2G, 3G, and 4G, etc. It is to be appreciated that cellular network communications may include, for example, voice communications, data communications, Short Message Service (SMS) communications, or any combination thereof.

Satellite navigation antenna 119 may be configured to receive satellite navigation signals and transmit the received satellite navigation signals to cellular communication module 101 for cooperating with cellular communication module 101 to perform satellite positioning and navigation. In some embodiments, the satellite navigation signals may include, for example, GPS signals, beidou signals, GLONASS signals, Galileo signals, or the like, or any combination thereof.

DVR camera 113 may be used to capture images and/or video of at least one of the front, rear, left side, and right side of the vehicle. In some embodiments, DVR camera 113 may be, for example, a visible light camera, an infrared camera, a lidar, or the like. Preferably, DVR camera 113 may be a wide-angle camera (e.g., a viewing angle of 100 °, 130 °, 150 °, or 180 ° or greater). In some embodiments, DVR camera 113 may comprise one or more cameras. For example, the one or more cameras may be disposed on the front windshield to acquire images and/or video in front of the vehicle. For another example, the one or more cameras may be disposed on a rear windshield to capture images and/or video behind the vehicle. Of course, the one or more cameras may also be disposed on the left or right side of the vehicle to capture images and/or video of the left or right side of the vehicle. It will be appreciated that the one or more cameras may also be located on the rear view mirrors (e.g., left, right, center, etc.) of the vehicle, the front grille, the front bumper, etc.

The first storage module 115 is connected to the main processor 103 for storing data. For example, the first storage module 115 may store image data and/or video data acquired by the DVR camera 113. For another example, the first storage module 115 may store image data and/or video data processed by the main processor 103. In some embodiments, the first storage module 115 may include, for example, an eMMC memory, a flash memory chip, an SSD memory, etc., or any combination thereof, provided within the in-vehicle terminal 100. The first storage module 115 may also be a TF card, an MMC card, an SD card, or the like, or any combination thereof, disposed in a card slot provided in the in-vehicle terminal 100. In some embodiments, the first storage module 115 may be connected to the host processor 103 through an SDIO (Secure digital input/Output) interface.

The main processor 103 may be configured to process images and/or videos acquired by the DVR camera 113 and store the processed images and/or videos in the first storage module 115. In some embodiments, the processing of the images and/or video acquired by DVR camera 113 by main processor 103 may be encoding, compression, noise reduction, sharpening, etc., or any combination thereof. In some embodiments, the main processor 103 may also be connected to the cellular communication module 101, and may send raw and/or processed images and/or videos acquired by the DVR camera 113 to the cloud via the cellular communication module 101. The cloud may be a remote personal computer, server, public cloud, private cloud, or the like.

It is appreciated that the main processor 103 may include, for example, a microcontroller, a microprocessor, a Reduced Instruction Set Computer (RISC), an Application Specific Integrated Circuit (ASIC), an application specific instruction set processor (ASIP), a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Physical Processing Unit (PPU), a single chip microcomputer, a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), an advanced reduced instruction set system (ARM), a Programmable Logic Device (PLD), any circuit or processor capable of performing at least one function, or the like, or any combination thereof.

The CAN transceiver 111 is used to receive data on the CAN bus and/or transmit data onto the CAN bus. It is understood that the data received by the CAN transceiver 111 from the CAN bus may be sent to the microcontroller 102, and the received data may be further processed by the microcontroller 102, for example, by performing protocol conversion and the like. The microcontroller 102 may send the data generated by the microcontroller to the CAN transceiver 111 according to the CAN bus protocol, and the CAN transceiver 111 sends the data to the CAN bus. Although in the embodiment shown in fig. 4 there is only one CAN transceiver 111, it is understood that a plurality of CAN transceivers 111 may be included in the in-vehicle terminal 100, and that these CAN transceivers 111 are each connected to the microcontroller 102.

in some embodiments, the microcontroller 102 may also control the actions of the cellular communication module 101. It will be appreciated that the actions of the cellular communication module 101 may be to implement one or more of its own functions. For example, the cellular communication module 101 may perform cellular network communication by the cellular communication module 101 cooperating with the main antenna 104, or perform satellite positioning and navigation by the cellular communication module 102 cooperating with the satellite navigation antenna 119.

In some embodiments, the microcontroller 102 may also protocol convert data that is interacted between the CAN transceiver 111 and the cellular communication module 101. Specifically, the microcontroller 102 may convert data conforming to the CAN bus protocol received by the CAN transceiver 111 into data conforming to the cellular network communication protocol, and the microcontroller 102 may also convert data transmitted by the cellular communication module 101 into data conforming to the CAN bus protocol. In some embodiments, the microcontroller 102 may comprise, for example, an ARM processor, a DSP processor, a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a single-chip microcomputer, an ASIC, or the like, or any combination thereof.

In some embodiments, the in-vehicle terminal 100 further includes an ethernet switch 112. The ethernet switch 112 is connected to the microcontroller 102 for transceiving data packets conforming to the ethernet protocol. In embodiments where the vehicle terminal 100 includes the cellular communication module 101, the CAN transceiver 111 and the Ethernet switch 112, the microcontroller 102 is further configured to protocol convert data exchanged between any two of the CAN transceiver 111, the cellular communication module 101 and the Ethernet switch 112. Although in the embodiment shown in fig. 4, there is only one ethernet switch 112, it is understood that the in-vehicle terminal 100 may include a plurality of ethernet switches 112, and the ethernet switches 112 are each connected to the microcontroller 102.

In some embodiments, continuing to refer to fig. 4, the vehicle-mounted terminal 100 may also include a diversity antenna 105. The diversity antenna 105 is connected to the cellular communication module 101 for diversity transceiving cellular radio signals. It is understood that the diversity antenna 105 can receive the cellular wireless signal together with the main antenna 104, and the cellular wireless signal that the diversity antenna 105 can receive with the main antenna 104 can be selected and combined at the cellular communication module 101 to reduce the influence of the fading of the cellular wireless signal, thereby improving the signal-to-noise ratio of the received cellular wireless signal. In some embodiments, diversity antenna 105 may include one or more antennas, e.g., 2 antennas, 4 antennas.

the in-vehicle terminal 100 may further include a wireless local area network antenna 106 and a wireless local area network module 107. The wireless lan module 107 is connected to the wireless lan antenna 106 and the cellular communication module 101, respectively. The wireless local area network antenna 106 may be used for transceiving wireless local area network signals. The wireless lan module 106 and the wireless lan module 107 cooperate with each other to implement wireless lan communication. The wireless local area network may, for example, comprise a wireless network conforming to the IEEE802.11 family of standards, a wireless network conforming to the bluetooth standard, a wireless network conforming to the Zigbee standard, or any combination thereof. In some embodiments, the wlan module 107 may be connected to the cellular communication module 101 through a Universal Asynchronous Receiver/Transmitter (UART). In some embodiments, the cellular communication module 101 and the wireless local area network module 107 may cooperate to convert a cellular network into a wireless local area network such that a user terminal connected to the wireless local area network may connect to the internet via the cellular network.

in some embodiments, the in-vehicle terminal 100 may further include an eSIM card 108. The eSIM card 108 can be connected to the cellular communication module 101 for storing subscriber identification information. It is understood that the subscriber identification information stored by the eSIM card 108 can be used by a cellular network operator to authenticate a subscriber to determine whether the in-vehicle terminal 100 has access to the cellular network and is authorized for cellular network communications. In some embodiments, the eSIM card 108 can be a chip capable of storing subscriber identification information.

in some embodiments, the in-vehicle terminal 100 may further include a second storage module 109. The second storage module 109 is connected to the cellular communication module 101 for storing data. In some embodiments, the second storage module 109 may include, for example, an eMMC memory, a flash memory chip, an SSD memory, etc., or any combination thereof, provided within the in-vehicle terminal 100. The second storage module 109 may also be a TF card, an MMC card, an SD card, or the like, or any combination thereof, disposed in a card slot provided in the in-vehicle terminal 100. In some embodiments, the second storage module 109 may be connected to the cellular communication module 101 through an SDIO (Secure Digital Input/Output) interface.

in some embodiments, the in-vehicle terminal 100 may further include a USB port 110. The USB port 110 is connected to the cellular communication module 101 for data interaction between the cellular communication module 101 and external devices. In some embodiments, cellular communication module 101 may connect with a car machine through USB port 110 to enable data interaction.

In some embodiments, the in-vehicle terminal 100 may further include an audio codec module 120. The audio codec module 120 is connected to the cellular communication module 101 for encoding and decoding audio data. When cellular communication module 101 is in voice communication, audio codec module 120 may convert audio data received by cellular communication module 101 into an audio signal for output to a speaker on the vehicle via the MIC OUT port; the audio codec module 120 may also convert audio signals received by the MIC IN port (e.g., as may be picked up by a microphone) into audio data and send the audio data to the cellular communication module 101. The voice communication may include voice calls over a cellular network, voice messages over instant communications over the internet, and the like. When the vehicle-mounted terminal 100 plays multimedia, the audio codec module 120 may also convert audio data in the multimedia file and/or multimedia stream into an audio signal and output the audio signal to a speaker on the vehicle. In some embodiments, the audio codec module 120 may be connected to the cellular communication module 101 through an I2S (Integrated inter Sound) interface. IN some embodiments, the cellular communication module 101 may also store audio data converted from the audio signal received by the MIC IN port to the first storage module 115 to store both video and audio while driving.

IN other embodiments, the main processor 103 may receive an audio signal received by the MIC IN port (e.g., captured by a microphone) and convert the audio signal into audio data, which is then stored IN the first storage module 115 to save both video and audio while driving.

In some embodiments, the microcontroller 102 is also connected to the main processor 103 and controls the actions of the main processor 103. It will be appreciated that the actions of the main processor 103 may be to implement one or more of the functions it has. For example, the action of the main processor 103 may be processing of images and/or video acquired by the DVR camera 113 may be encoding, compressing, denoising, sharpening, and the like. For another example, the action of the main processor 103 may be reading and writing to the memory 114, the first memory module 115.

In some embodiments, the vehicle-mounted terminal 100 may further include a power amplifier module 121. The power amplifier module 121 is connected to the cellular communication module 101, and is configured to amplify the audio signal output by the cellular communication module 101, and output the amplified audio signal to the speaker through the SPK OUT port. The speaker may be a speaker provided in the in-vehicle terminal 100 or a speaker provided in the vehicle. In some embodiments, when an error occurs in the in-vehicle terminal 100, the cellular communication module 101 may send an audio signal for alarm, and the audio signal is amplified by the power amplifier module 121 and then sent by the speaker. In some embodiments, when the vehicle-mounted terminal 100 performs multimedia playing, the cellular communication module 101 may convert audio data in a multimedia file and/or a multimedia stream into an audio signal, and the audio signal is amplified by the power amplifier module 121 and then output to a speaker on the vehicle. In some embodiments, the power amplifier module 121 is further connected to the microcontroller 102. The microcontroller 102 also controls the power amplifier module 121, for example, adjusts the gain of the power amplifier module 121. Preferably, the power amplifier module 121 is connected to the microcontroller 102 through an I2C (Inter-Integrated Circuit) bus.

In some embodiments, the in-vehicle terminal 100 may further include a memory 114. The memory 114 is coupled to the host processor 103 and is used to provide temporary storage space for data and/or instructions to be processed by the host processor 103. For example, the memory 114 may temporarily store image data and/or video data acquired by the DVR camera 113. For another example, the memory 114 may temporarily store program instructions required by the main processor 103 to process image data and/or video data, which may be encoding, compressing, denoising, sharpening, stitching, distortion correction, or the like, or any combination thereof. The memory 114 may include, for example, Dynamic RAM (DRAM), double data rate synchronous dynamic RAM (DDR SDRAM), Static RAM (SRAM), thyristor RAM (T-RAM), zero capacitance RAM (Z-RAM), and the like, or any combination thereof.

In some embodiments, the in-vehicle terminal 100 may further include a power management module 116. The power management module 116 is connected to the main processor 103 and configured to perform power management on at least some components in the vehicle-mounted terminal 100 according to an instruction of the main processor 103. The components may be a cellular communication module 101, a main processor 103, a wireless local area network module 107, a second storage module 109, a camera 111, a DVR camera 113, a first storage module 115, a microcontroller 102, an acceleration sensor 122, etc.

in some embodiments, the in-vehicle terminal 100 may further include a Low-Voltage Differential Signaling (LVDS) port 117. The LVDS port 117 is connected to the main processor 103 for enabling data interaction of the main processor 103 with external devices. In some embodiments, the main processor 103 may be connected to the vehicle via the LVDS port 117 to implement data interaction, for example, sending image data and/or video data acquired by the DVR camera 113 to the vehicle for display by the vehicle to assist the driver in observing the surrounding situation of the vehicle.

in some embodiments, the in-vehicle terminal 100 also includes a data port 118. The data port 118 is connected to the microcontroller 102 for data interaction between the microcontroller 102 and external devices. Specifically, the ignition signal of the vehicle may be transmitted to the microcontroller 102 through the data port 118, thereby triggering the microcontroller 102 to operate.

in some embodiments, the in-vehicle terminal 100 further includes an acceleration sensor 122. An acceleration sensor 122 is connected to the microcontroller 102 for sensing the acceleration of the vehicle. The microcontroller 102 can determine whether the vehicle has a collision accident according to the acceleration change of the vehicle sensed by the acceleration sensor 122. In some embodiments, the acceleration sensor 122 may be, for example, piezoelectric, piezoresistive, capacitive, servo, or the like. In some embodiments, the acceleration sensor 122 may be, for example, uniaxial, biaxial, or triaxial. Preferably, the acceleration sensor 122 may be a MEMS sensor.

In some embodiments, the in-vehicle terminal 100 further includes a power supply module 123. The power module 123 is connected to a battery of the vehicle, and supplies power to each component in the in-vehicle terminal 100 after converting a battery voltage.

As described above, the vehicle-mounted terminal 100 of the present invention has functions of a T-Box, an intelligent gateway, and a driving recorder, and forms a system controller having functions of driving record (such as image and sound information during driving), vehicle condition information collection, driving behavior and habit collection, vehicle multi-bus interaction, and data uploading cloud. The in-vehicle terminal 100 may be implemented by a cellular communication module 101, a main processor 103, a microcontroller 102, a CAN transceiver 111, a DVR camera 113, and a power module 119. Compared with the technical scheme realized by the combination of the three module products of the T-Box, the intelligent gateway and the automobile data recorder, the vehicle-mounted terminal 100 omits a main processor, a microcontroller, a power supply module and a peripheral circuit with overlapping functions, and has the advantages of fully utilizing resources, reducing occupied space, improving system interaction efficiency and reliability, reducing overall cost and the like.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The various illustrative logical modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

Although the present invention has been described with reference to the present specific embodiments, it will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the present invention, and various equivalent changes and substitutions may be made without departing from the spirit of the invention, and therefore, it is intended that all changes and modifications to the above embodiments within the spirit and scope of the present invention be covered by the appended claims.

Claims

1. A vehicle-mounted terminal characterized by comprising:

a main antenna for transceiving cellular wireless signals;

The satellite navigation antenna is used for receiving satellite positioning signals;

the cellular communication module is respectively connected with the main antenna and the satellite navigation antenna and is used for cellular network communication and satellite positioning;

The DVR camera shooting device is used for acquiring images and/or videos of at least one of the front, the rear, the left side and the right side of the vehicle;

The first storage module is used for storing data;

The main processor is respectively connected with the DVR camera device and the first storage module and is used for processing the images and/or videos acquired by the DVR camera device and storing the processed images and/or videos to the first storage module;

The CAN transceiver is used for receiving data on the CAN bus and/or transmitting the data to the CAN bus; and

and the microcontroller is respectively connected with the cellular communication module and the CAN transceiver and is used for controlling the action of the cellular communication module and carrying out protocol conversion on data interacted between the CAN transceiver and the cellular communication module.

2. the in-vehicle terminal according to claim 1, wherein the in-vehicle terminal further comprises:

The Ethernet switch is connected with the microcontroller and used for receiving and transmitting data packets conforming to an Ethernet protocol; the microcontroller is further configured to perform protocol conversion on data exchanged between any two of the CAN transceiver, the cellular communication module, and the ethernet switch.

3. the in-vehicle terminal according to claim 1, wherein the in-vehicle terminal further comprises:

And the diversity antenna is connected with the cellular communication module and is used for diversity receiving and transmitting cellular wireless signals.

4. The in-vehicle terminal according to claim 1, wherein the in-vehicle terminal further comprises:

The wireless local area network antenna is used for receiving and transmitting wireless local area network signals;

And the wireless local area network module is respectively connected with the wireless local area network antenna and the cellular communication module and is used for realizing wireless local area network communication.

5. The vehicle terminal of claim 1, further comprising one or more of:

an eSIM card connected with the cellular communication module and used for storing subscriber identification information;

A second storage module connected to the cellular communication module for storing data;

And the memory is connected with the main processor and is used for providing temporary storage space for data and/or instructions to be processed by the main processor.

6. The vehicle terminal of claim 1, further comprising one or more of:

The audio coding and decoding module is connected with the cellular communication module and is used for coding and decoding audio data;

The power supply module is used for providing power supply for each part in the vehicle-mounted terminal;

And the power management module is connected with the main processor and used for performing power management on at least one part of components in the vehicle-mounted terminal according to the instruction of the main processor.

7. The vehicle terminal of claim 1, wherein the microcontroller is further coupled to the main processor, and the microcontroller is further configured to control the operation of the main processor.

8. The in-vehicle terminal according to claim 7, further comprising:

The power amplification module is connected with the cellular communication module and used for amplifying the audio signal output by the cellular communication module and outputting the amplified audio signal to a loudspeaker; and the microcontroller also controls the power amplifier module.

9. The in-vehicle terminal according to claim 7, further comprising:

And the acceleration sensor is connected with the microcontroller and used for sensing the acceleration of the vehicle.

10. the vehicle terminal of claim 1, further comprising one or more of:

The data port is connected with the microcontroller and is used for realizing data interaction between the microcontroller and external equipment;

The USB port is connected with the cellular communication module and is used for realizing data interaction between the cellular communication module and external equipment;

And the LVDS port is connected with the main processor and is used for realizing data interaction between the main processor and external equipment.