CN114093043A

CN114093043A - On-vehicle intelligent passenger cabin system of integrated ETC function

Info

Publication number: CN114093043A
Application number: CN202111462917.XA
Authority: CN
Inventors: 龚琪琪; 胡金
Original assignee: Shenzhen Hangsheng Electronic Co Ltd
Current assignee: Shenzhen Hangsheng Electronic Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-02-25

Abstract

The invention discloses a vehicle-mounted intelligent cockpit system integrating an ETC function, wherein an ETC module is integrated in the vehicle-mounted intelligent cockpit system, the vehicle-mounted intelligent cockpit system starts and controls a plurality of control units of a vehicle-mounted intelligent cockpit through a hardware isolation scheme of a heterogeneous ARM core, and the plurality of control units at least comprise an instrument, an information entertainment system and the ETC module. Compared with the prior art, the invention can solve the problems that the ETC equipment is required to be installed depending on guidance of bank workers in the middle and later periods, and the attractiveness of a vehicle is influenced.

Description

On-vehicle intelligent passenger cabin system of integrated ETC function

Technical Field

The invention relates to the technical field of electronic design of automobile cabins, in particular to a vehicle-mounted intelligent cabin system integrating ETC function.

Background

The automobile cabin is subjected to mechanical and electronic transformation and evolves to a third living space. The automobile cabin is subjected to mechanization and electronization (traditional cabin) stages, the traditional cabin system mainly adopts simple hardware, and the automobile body electronics such as instruments, sound equipment, electric seats and the like form the hardware system of the traditional automobile cabin. For the intelligent cockpit, as the functions are improved, the hardware system composition of the intelligent cockpit is more complicated.

The intelligent cabin is a key man-machine interface in the advancing path of the automobile to intellectualization and networking, and will become an intelligent mobile space meeting the advanced driving experience of the individual requirements of users in the future. The intelligent cabin is a complete system formed by electronic equipment such as a vehicle-mounted information entertainment system, a streaming media rearview mirror, a visual perception system, a voice interaction system, an intelligent seat, a rear-row display screen and the like. The method is used for upgrading the traditional cockpit in an all-round way, and in the aspect of hardware, the traditional mechanical instrument is upgraded into a digital liquid crystal instrument to provide picture display of rich technological sense for driving information; the streaming media rearview mirror, the HUD and the rear row display screen are added, and perfect navigation information, surrounding environment information and entertainment information are provided for consumers. Meanwhile, human-computer interaction technologies such as voice recognition, face recognition, touch control, gesture recognition and iris recognition are further integrated into the system.

Under the more and more environmental condition of demand to the application scene of automobile product and function to current market, the realization of the high and present domestic ETC functional requirement of frequency of use still relies on the later stage to install ETC equipment additional completely and realizes, generally is that the user applies for by oneself, can select directly to apply for or the current precious urban service with little letter of payment also can apply for ETC equipment by oneself in the bank.

The ETC applied to the bank has the following defects:

1. the installation process needs bank supply equipment and is guided by bank workers in the whole process, and the installation point is generally arranged on a front windshield;

2. ETC equipment provided by the existing bank is a solar energy supply product, and influences the overall aesthetic appearance of the automobile;

3. the whole service is provided by the banking service industry, the participation time length of the user is in direct proportion to the busy degree of corresponding bank staff, and the user experience sense is reduced.

Apply for believe a little and pay precious ETC and have following defect:

1. the ETC equipment deposit needs to be paid in advance;

2. ETC equipment needs to be installed and activated according to a network tutorial by oneself, and certain requirements are provided for the practical ability of a user.

Disclosure of Invention

The invention mainly aims to provide a vehicle-mounted intelligent cabin system integrating an ETC function, and aims to solve the problems that the installation of ETC equipment in the middle and later periods in the prior art needs to be guided by bank workers, and the attractiveness of a vehicle is influenced.

In order to achieve the purpose, the invention provides a vehicle-mounted intelligent cockpit system integrating ETC function, wherein an ETC module is integrated in the vehicle-mounted intelligent cockpit system, the vehicle-mounted intelligent cockpit system starts and controls a plurality of control units of the vehicle-mounted intelligent cockpit through a hardware isolation scheme of a heterogeneous ARM core, and the control units at least comprise an instrument, an infotainment system and the ETC module.

According to a further technical scheme, the vehicle-mounted intelligent cockpit system comprises an SOC chip, the ETC module comprises an MCU, a radio frequency module RF and a split antenna, the MCU is respectively connected with the SOC chip and the radio frequency module RF, the split antenna is connected with the radio frequency module RF, and the split antenna is integrally arranged in an antenna assembly of a vehicle.

The invention further adopts the technical scheme that the normal line of the antenna forms an included angle of 60 degrees with the horizontal line and faces the outside of the vehicle.

According to a further technical scheme, the ETC module further comprises an ESAM chip connected with the MCU, and the ESAM chip supports an independent SM4 algorithm and a 7816 hardware interface.

The further technical scheme of the invention is that the SOC chip is provided with a two-way CAN controller, and TJA1042 is used as a CAN protocol controller and a physical bus interface.

According to a further technical scheme, the ETC module further comprises a PMU module connected with the MCU.

According to a further technical scheme, the vehicle-mounted intelligent cabin system further comprises a BT-WIFI chip connected with the SOC chip.

The further technical scheme of the invention is that the BT-WIFI chip adopts an MT6630 chip of the joint distribution department, and the MT6630 chip supports the mode switching of a Bluetooth 5.1 protocol and a WIFI Station/AP.

The invention further adopts the technical scheme that the safety of the vehicle-mounted intelligent cabin system is obtained by using a MTK Trustzone safety hard isolation control component, the SOC chip kernel is isolated into a double partition of an instrument and an infotainment system, the instrument belongs to Secure World defined in Trustzone, and the infotainment host belongs to Normal World.

The invention further adopts the technical scheme that the vehicle-mounted intelligent cabin system also comprises an instrument display screen and a navigation display screen which are connected with the SOC chip.

The vehicle-mounted intelligent cabin system integrating the ETC function has the beneficial effects that: according to the technical scheme, the ETC module is integrated in the vehicle-mounted intelligent cockpit system, the vehicle-mounted intelligent cockpit system starts and controls the plurality of control units of the vehicle-mounted intelligent cockpit through a hardware isolation scheme of the heterogeneous ARM core, the plurality of control units at least comprise the instrument, the infotainment system and the ETC module, and the problems that the ETC equipment needs to be installed depending on guidance of bank workers in the middle and later periods and the attractiveness of a vehicle is influenced in the prior art can be solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a system block diagram of an on-vehicle intelligent cabin system integrating ETC functions according to the present invention;

FIG. 2 is a hardware architecture diagram of the on-board intelligent cockpit system of the present invention incorporating ETC functionality;

fig. 3 is a system block diagram of the ETC control unit;

FIG. 4 is a schematic diagram of a CAN interface circuit;

fig. 5 is a schematic diagram of a BT-WIFI interface circuit.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the invention provides a vehicle-mounted intelligent cockpit system integrating an ETC function. The ETC module is arranged in the preferred embodiment of the vehicle-mounted intelligent cockpit system integrating the ETC function, the vehicle-mounted intelligent cockpit system starts and controls a plurality of control units of the vehicle-mounted intelligent cockpit through a hardware isolation scheme of the heterogeneous ARM core, and the plurality of control units at least comprise an instrument, an information entertainment system and the ETC module.

This embodiment is through integrated ETC module in on-vehicle intelligent cockpit system, can solve prior art middle and later stages and install ETC equipment additional and need rely on bank's staff to guide the installation, and influence the pleasing to the eye problem of vehicle.

Specifically, in this embodiment, the vehicle-mounted intelligent cockpit system includes an SOC chip, and the ETC module includes MCU, radio frequency module RF and disconnect-type antenna, wherein, MCU is connected with SOC chip, radio frequency module RF respectively, and the disconnect-type antenna is connected with radio frequency RF module, and the disconnect-type antenna integration sets up in the antenna assembly of vehicle.

Wherein, the antenna normal is 60 contained angles with the level, and faces the car outward, can avoid the inside embellishment of vehicle to shelter from the influence for signal transmission stability is higher.

Further, in this embodiment, the ETC module further includes an ESAM chip connected to the MCU, and the ESAM chip supports the independent SM4 algorithm and the 7816 hardware interface. The ESAM chip conforms to the standard of integrated circuit card with contacts ISO/IEC/7816-3/4, can support the rapid generation of true random numbers in the card, and has good random performance; various rate selections are supported, and different communication rates such as 9600/38400/115200bps can be supported.

Further, in this embodiment, the SOC chip has a dual-channel CAN controller, and adopts TJA1042 as a CAN protocol controller and a physical bus interface. The SOC chip is used for collecting and sending message information on the CAN bus.

Further, in this embodiment, the ETC module further includes a PMU connected to the MCU, and the PMU is mainly used for power control of the ETC module.

Furthermore, in this embodiment, the vehicle-mounted intelligent cabin system further includes a BT-WIFI chip connected to the SOC chip.

Specifically, in this embodiment, the BT-WIFI chip adopts an MT6630 chip of the distribution department, and the MT6630 chip supports mode switching of the bluetooth 5.1 protocol and the WIFI Station/AP.

In the embodiment, the safety of the vehicle-mounted intelligent cabin system is obtained by using the MTK Trustzone safety hard isolation control component, the SOC chip kernel is isolated into a double partition of the instrument and the infotainment system, the instrument belongs to Secure World defined in Trustzone, and the infotainment host belongs to Normal World.

In this embodiment, the vehicle-mounted intelligent cabin system further includes an instrument display screen and a navigation display screen connected to the SOC chip.

The structure and the working principle of the on-vehicle intelligent cabin system integrating the ETC function are explained in detail below.

1. The invention solves the problems of the prior art treated by a vehicle-mounted intelligent cabin system integrating ETC function

1.1 dealing with safety issues

In the vehicle-mounted intelligent cockpit system integrating the ETC function, the ETC module adopts an ESAM chip passing through safety certification and supports an independent SM4 algorithm and a 7816 hardware interface. Meanwhile, the ESAM chip conforms to the standard of an integrated circuit card with contacts (ISO/IEC/7816-3/4), can support the rapid generation of true random numbers in the card and has good random performance; various rate selections are supported, and different communication rates such as 9600/38400/115200bps can be supported.

The ETC module can support equipment to carry out system self-checking and fault alarm when awakening initialization, and is embodied through human-computer interaction of the vehicle-mounted intelligent cabin system. When the ETC module detects that the control unit works abnormally, the fault information is sent to the cabin system through the SPI, and the cabin system displays and reminds through the instrument and the information entertainment system.

1.2 functional realizability problem handling

The ETC module is integrated in the vehicle-mounted intelligent cockpit control system, and a plurality of control units of the intelligent cockpit are started and controlled through a hardware isolation scheme of the heterogeneous ARM core, wherein the control units comprise an instrument, an infotainment system and the ETC module. Each subsystem operates independently, and operates according to the resource condition of ARM core hardware isolation allocation, the integration degree of the whole system is higher, and the cost is reduced while the resource use efficiency is increased.

2. Aiming at the current situation of ETC functional products, the invention provides a solution for embedding an ETC module into a vehicle-mounted intelligent cabin system, and a separated ETC antenna is installed on the top of a vehicle. The invention can effectively solve the aesthetic problem of the later-stage additional installation of ETC equipment, and can also be compatible with various payment scenes of WeChat payment, Paibao payment, parking APP payment and the like of a user by combining the processing capability of a vehicle-mounted intelligent cabin system and the advantages of man-machine interaction.

In the invention, the intelligent internet cabin system is composed of two 12.3-inch color screens (with the resolution of 1920 x 720), a loudspeaker, a light guide support, a backlight module, a front frame, a rear shell and the like, and vehicle basic state data, alarm prompt and the like are comprehensively displayed in a graphical display mode. The system hardware architecture diagram is shown in fig. 2.

The ETC MODULE in the system hardware architecture block diagram shown in fig. 2 is an internal device of the used ETC MODULE, and the ETC control unit includes an ESAM and a radio frequency MODULE RF, wherein the ETC split antenna is installed in an antenna assembly of an automobile (shark fin antenna, generally placed on the top of the automobile), the normal direction of the antenna needs to form an included angle of 60 degrees with the horizontal, the normal faces the outside of the automobile, and is not shielded and influenced by an internal ornament of the automobile, and the signal transmission stability is higher. An enlarged diagram of a system block diagram of the ETC control unit is shown in FIG. 3, the internal construction mainly comprises that an MCU processes information instructions of an SOC and an ETC module and mutually transmits the information instructions, and a PMU mainly controls a power supply of the ETC module.

The ETC in the prior art is structured as an active RFID (self-contained power supply), and a toll station is provided with a reader and an antenna.

The RFID is an independent electronic identification tag, and the RFID internally comprises two data area IDs (unique identification marks) + a data storage area (data adding and deleting operation). An antenna is a device that handles wireless communication, and a reader communicates with the antenna by electromagnetic waves.

When the reader identifies the RFID, the antenna sends a certain frequency signal (ultrahigh frequency electromagnetic wave), the RFID receives the signal and then sends ID information through the certain frequency signal, the antenna receives the signal and then sends the signal to the reader, the reader sends the ID information to the host, the host calculates the cost needing to be paid through information processing such as vehicle type and the like and sends the cost to the RFID through the antenna, the charging is not only stored, and the cost paying is finished after the cost is sent to a bank through the host.

The main part of the ETC module shown in fig. 3 is an RF and ESAM device, where ESAM is an encrypted information storage area, RF is responsible for receiving and receiving external high-frequency electromagnetic wave signals (charging or data recording after passing a certain road section), MCU is responsible for transmitting charging information of toll stations and data in the information storage area to SOC, and information sent from toll stations can be selectively displayed on the host interface/meter interface.

The information in the vehicle-mounted intelligent cabin system integrated with the ETC function CAN be normally transmitted in the system mainly depending on MT2712 (the model name of an SOC chip in fig. 2) and is provided with a two-way CAN controller, the system is designed by adopting TJA1042 (the TJA1042 is a fault-tolerant high-speed CAN device) as a CAN protocol controller and a physical bus interface, and a CAN interface circuit based on the TJA1042 is shown in fig. 4 (a node without an external wire in the figure is a detection node and has no great influence on the whole circuit). The protocol control chip is used for collecting and sending message information on the CAN bus.

Subsequently, if payment apps such as a payment treasure and WeChat are added to directly pay fees online, the bluetooth & WiFi module in fig. 2 may be used to implement the app wireless payment function.

The BT-WIFI chip adopts MT6630 of the co-distribution department, supports mode switching of a Bluetooth 5.1 protocol and WIFI Station/AP, and is based on a BT-WIFI interface circuit of the MT6630 as shown in figure 5.

In the invention, the security of the vehicle-mounted intelligent cabin system is acquired by using the MTK Trustzone security hard isolation control component, the Soc kernel is isolated into a meter and infotainment system double partition, the meter area belongs to Secure World defined in Trustzone, the infotainment host belongs to Normal World, wherein the latter is provided with a WiFi module and a 4G module for realizing networking function, thereby ensuring that the data access of the infotainment part and the data access of the meter area part are separated, and realizing the security of the vehicle-mounted intelligent cabin system.

Specifically, the single A35 kernel is used for driving and realizing the function of an instrument end, an RTOS system is operated, a display unit of a 12.3-inch full liquid crystal instrument can be driven, and the functions of a speedometer, a tachometer, a traveling computer and a driving information prompting lamp are realized. Due to the Trustzone safety hard isolation control assembly, the normal use of the functions of the instrument end cannot be influenced by the dead halt or the restart caused by the android system abnormity of the information entertainment host end.

The infotainment host computer runs the Android P system to realize the traditional functions of the infotainment system by using the MT2712 residual hardware resources isolated by the Trustzone hard isolation component, including two A72 cores + 3A 35 cores + GPU. The instrument or other subsystems of the intelligent cockpit can render the complex 3D model through hardware resources of the infotainment host and transmit the rendered complex 3D model in a video streaming mode.

3. The beneficial effect of ETC module:

3.1, the ETC control unit needs to support software upgrading of the ETC system in order to meet corresponding national policies and subsequent regulatory requirements, and the software upgrading version of the ETC control unit is acquired through a 4G module of the vehicle-mounted intelligent cockpit system and is transmitted to the ETC control unit through the SPI for upgrading and iteration of the software version.

3.2, for satisfying other payment scenes except high-speed charging such as parking payment, the corresponding human-computer interaction interface is increased through the vehicle-mounted intelligent cabin system, so that a terminal user can clearly and visually acquire information needing payment, and payment and recharging of the ETC equipment can be confirmed through the human-computer interaction interface of the vehicle-mounted intelligent cabin system.

3.3, when the main consumer of ETC changes from car to human, the process is a complete subversion of the whole process of dealing with road tolling currently in banks and countries, and the flow tracking for cars can be changed into the flow tracking for human.

3.4, the ETC product fuses to the automobile production front-loading market, has the guide to the future automobile function trend and adds and holds the effect.

The technical terms involved in the invention are explained as follows:

1、ETC

electronic Toll Collection, Chinese translation is Electronic Toll Collection, and is automatic Toll Collection for highways or bridges. The special short-range communication is carried out between the vehicle-mounted electronic tag arranged on the vehicle windshield and the microwave antenna on the ETC lane of the toll station, and the computer networking technology and the bank are utilized to carry out background settlement processing, so that the purpose that the vehicle can pay the highway or bridge expenses through the highway or bridge toll station without parking is achieved.

2. Heterogeneous ARM core

Processing high bandwidth data, executing system applications, responding to real-time requests, and meeting industry security standards cannot be simultaneously satisfied on a single processor, but a multi-core heterogeneous chip can achieve these functions. Such a device having a plurality of processing units, each unit having the capability to handle one or more of the aforementioned needs, is referred to as a heterogeneous processing system.

3. ESAM chip

The embedded security control module is a CPU card chip packaged by a DIP or SOP chip, is used as a wallet in an IC card ammeter at first, stores recharging amount and consumption amount and other important parameters, and has an identity identification function and bidirectional identity authentication with an external card. With the increasing importance on the terminal security, the method is widely applied to various embedded terminals to realize the functions of data secure storage, data encryption and decryption, terminal identity identification and authentication, embedded software copyright protection, DRM digital copyright management and the like.

4. SM4.0 (original name SMS4.0)

Is a block cipher standard adopted by the government of the people's republic of China, and is issued by the national cipher administration in 3/21/2012. The relevant standard is "GM/T0002-.

5. Hardware ISO7816 interface

The user can directly communicate with 7816-supporting cards such as SIM cards, CPU cards, Smart cards and the like through the interface.

6. SPI interface

SPI (Serial Peripheral Interface) is a synchronous, Serial communication Interface specification, is commonly used for short-distance communication, mainly in embedded systems. This interface is introduced by Mototola corporation and has become a de facto standard (there is no uniform protocol specification, but based on its widespread use, a standard similar to a rule is formed according to the common practice in actual use).

7、MTK Trustzone

TrustZone is a hardware architecture designed by ARM aiming at consumer electronic equipment, and aims to construct a security framework for consumer electronic products to resist various possible attacks.

8. RTOS system

A Real-time operating system (RTOS), also known as a Real-time operating system, runs and manages system resources in an ordered manner, and provides a consistent basis for developing application programs.

Compared with a general operating system, the real-time operating system has the greatest characteristic of real-time performance, and if a task needs to be executed, the real-time operating system can execute the task immediately (within a short time) without long delay. This feature ensures timely execution of the respective tasks.

9、MT2712

Autus I20(MT2712)

The six-core vehicle-mounted information entertainment system has high performance, flexible interfaces and multi-display solutions.

The concurrency technology Autus I20 is a high performance six-core system-in-chip including four ARM Cortex-A35 processors and two Cortex-A72 processors.

Meanwhile, the high-performance ARM Mali-T880 MP4 GPU and the high-speed LPDDR4/DDR4 of up to 4GB are combined, and the Autus I20 fully supports various rich applications and images on a vehicle-mounted information entertainment system through multimedia processing and highly flexible video and audio interfaces. Connecting the combined chip: the MT6630 can add Bluetooth, Wi-Fi, and GNSS to the platform.

The vehicle-mounted intelligent cabin system integrating the ETC function has the beneficial effects that: according to the technical scheme, the ETC module is integrated in the vehicle-mounted intelligent cabin system, the vehicle-mounted intelligent cabin system starts and controls the plurality of control units of the vehicle-mounted intelligent cabin through a hardware isolation scheme of the heterogeneous ARM core, the plurality of control units at least comprise the instrument, the infotainment system and the ETC module, and the problems that the ETC equipment needs to be installed depending on guidance of bank workers in the middle and later periods and the attractiveness of a vehicle is influenced in the prior art can be solved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an on-vehicle intelligent cockpit system of integrated ETC function, its characterized in that, the integration is provided with the ETC module in the on-vehicle intelligent cockpit system, on-vehicle intelligent cockpit system starts and controls through the hardware isolation scheme of heterogeneous ARM core a plurality of the control unit of on-vehicle intelligent cockpit, a plurality of the control unit include instrument, infotainment system at least and the ETC module.

2. The on-board intelligent cockpit system integrating ETC function of claim 1, wherein the on-board intelligent cockpit system comprises an SOC chip, the ETC module comprises an MCU, a radio frequency module RF and a separate antenna, wherein the MCU is respectively connected with the SOC chip and the radio frequency module RF, the separate antenna is connected with the radio frequency RF module, and the separate antenna is integrally arranged in an antenna assembly of a vehicle.

3. The ETC function integrated onboard intelligent cockpit system of claim 2 where the antenna normal is at a 60 ° angle to the horizontal and faces out of the vehicle.

4. The on-board intelligent cockpit system integrating ETC function of claim 2 wherein said ETC module further comprises an ESAM chip connected to said MCU, said ESAM chip supporting independent SM4 algorithm and 7816 hardware interface.

5. The ETC-integrated onboard intelligent cockpit system of claim 2 where the SOC chip has a two-way CAN controller, employing TJA1042 as a CAN protocol controller and physical bus interface.

6. The on-board intelligent cockpit system integrating ETC functionality of claim 2 wherein said ETC module further comprises a PMU connected to said MCU.

7. The ETC-capable onboard intelligent cockpit system of claim 2 further comprising a BT-WIFI chip connected to the SOC chip.

8. The on-vehicle intelligent cockpit system of integrated ETC function of claim 7, characterized in that, the BT-WIFI chip adopts the MT6630 chip of the Union department, and the MT6630 chip supports the mode switching of Bluetooth 5.1 protocol and WIFI Station/AP.

9. The ETC enabled in-vehicle intelligent cockpit system of claim 2 where the security of the in-vehicle intelligent cockpit system is obtained by using MTK Trustzone Secure hard isolation control component to isolate the SOC chip kernel into dual partitions of meters and infotainment system, where meters belong to Secure World as defined in Trustzone and infotainment hosts belong to Normal World.

10. The ETC function integrated vehicle-mounted intelligent cockpit system of claim 2 further comprising an instrument display screen and a navigation display screen connected to the SOC chip.