CN107161007A - A kind of vehicular meter and the integration apparatus and method of middle control - Google Patents

Abstract

The invention provides an integrated device of vehicle instrument and central control, including: an information collector for collecting instrument information and central control information, which is electrically connected to the instrument information processing component and the central control information processing component respectively; the instrument information A processing component, which is electrically connected to the information collector and the display screen, and is used to generate an instrument image according to the instrument information collected by the information collector; a central control information processing component, which is electrically connected to the information collector and the display screen , for generating a central control image according to the central control information collected by the information collector; and a display screen, which is electrically connected to the instrument information processing part and the central control information processing part respectively, for displaying the instrument image and the central control image control images. The present invention also provides a method for the integration of vehicle instrumentation and central control, which combines the realization of instrumentation and central control, makes full use of existing resources, and ensures that the instrument is independent of the central control system, which not only has economic benefits but also can Satisfy the safety of instrument operation.

Description

An integrated device and method for vehicle instrumentation and central control

technical field

The invention relates to the technical field of integration of vehicle instrumentation and central control, in particular to an integrated device and method for vehicle instrumentation and central control.

Background technique

The vehicle instrument is used to display the current driving status information, such as speed, speed, temperature, fuel level, indicator light and driving mileage and other information related to driving safety. These information are acquired and processed by the single-chip MCU, integrated into an image and output to the instrument display Screen. The car central control system includes the central control door lock system (the driver can control the door switch of the whole vehicle through the car central control system), the glass lift system and the central console (audio control panel, FM and multimedia playback, etc.). On a system-on-chip SOC.

Traditional instrumentation and central control are realized independently. There are two ways to implement traditional instruments: the first one is implemented independently by MCU, which is mostly used for low-resolution screens. The MCU collects and processes vehicle information, draws images such as instrument panels and pointers, and outputs them to the screen. The second one is implemented by MCU and SOC. MCU is responsible for collecting vehicle information and sending the vehicle body information to SOC. SOC processes the received information, draws images such as instrument panels, pointers, and status information, and outputs the generated images to the screen. . The traditional central control system is generally composed of MCU and SOC. The central control system runs on the SOC. The MCU is responsible for collecting vehicle information and sending it to the SOC, as well as processing the control commands sent by the central control; the SOC is responsible for processing the vehicle information sent by the MCU. Decide whether to display the information on the screen, and send the driver's control instructions to the MCU for processing. SOC also has other application functions, such as multimedia player, FM and so on.

At present, the interaction scheme between the instrument and the central control host is more and more favored by users, which requires the instrument to display information such as the navigation map, phone list and multimedia playlist of the central control on the instrument. If you simply piece together independent instruments and independent central control hosts, it will be very difficult in terms of cost and technology. Moreover, the instrument is a safety part, while the central control is a non-safety part. Simply integrating the two together will not guarantee safety.

Contents of the invention

The purpose of the present invention is to provide an integrated device and method for vehicle instrumentation and central control, which combines the realization of instrumentation and central control, makes full use of existing resources, and ensures that the instrument is independent of the central control system. Benefits can meet the safety of instrument operation.

To achieve the above object, the present invention provides the following solutions:

The invention provides an integrated device of vehicle instrument and central control, comprising: an information collector for collecting instrument information and central control information, which is electrically connected to the instrument information processing component and the central control information processing component respectively; the instrument information A processing component, which is electrically connected to the information collector and the display screen, and is used to generate an instrument image according to the instrument information collected by the information collector; a central control information processing component, which is electrically connected to the information collector and the display screen , for generating a central control image according to the central control information collected by the information collector; and a display screen, which is electrically connected with the instrument information processing part and the central control information processing part, and is used for displaying the instrument image and the central control image control image.

Preferably, the functions of the meter information processing component and the central control information processing component are implemented by the same SOC.

Preferably, the SOC has multiple cores, and the operation of each core does not affect each other.

Preferably, the SOC is a heterogeneous SOC.

Preferably, the SOC also includes an internal image processor, part of the cores of the SOC and the internal image processor jointly realize the instrument function, and other cores implement the central control function, and the core for realizing the instrument function and the core for realizing the central control function With independent circuit support.

Preferably, the kernel implementing the instrument function runs a high-security real-time operating system, and the kernel implementing the central control function runs an ordinary security real-time operating system.

Preferably, the core that realizes the instrument function together with the internal image processor is based on ARM Cortex-M3, the core of ARM Cortex-M4 architecture; the core that realizes the central control function is based on ARM Cortex-A9, ARM Cortex-A15 , ARM Cortex-A57, the core of the ARM Cortex-A72 architecture.

Preferably, the kernel that realizes the instrument function together with the internal image processor is a kernel based on the ARM Cortex-M4 architecture, and its operating system is a FreeRTOS operating system; the kernel that realizes the central control function is based on the ARM Cortex-A72 architecture kernel, and the operating system it runs is the QNX operating system.

Preferably, the central control information processing part is an SOC, and the meter information processing part is an independent image processor arranged outside the SOC.

The present invention also provides a vehicle instrument and central control integration method, comprising the following steps: an information collector collects instrument information and central control information, and sends them to the instrument information processing unit and the central control information processing unit respectively; the instrument The information processing part receives the meter information and generates a meter image; the central control information processing part receives the central control information and generates a central control image; and the display screen receives and displays the meter image and the central control image.

Preferably, the information collector is a single-chip microcomputer, and the functions of the instrument information processing part and the central control information processing part are realized by a multi-core SOC, wherein the SOC also includes an internal image processor, and part of the SOC The core and the internal image processor jointly realize the instrument function, and other cores realize the central control function, and the core for realizing the instrument function and the core for realizing the central control function have independent circuit support.

Preferably, the central control information processing part is an SOC, and the meter information processing part is an independent image processor arranged outside the SOC.

Description of drawings

Fig. 1 is a structural block diagram of an integrated device of vehicle instrumentation and central control according to an embodiment of the present invention.

Fig. 2 is a structural block diagram of an integrated device of a vehicle instrument and a central control according to another embodiment of the present invention.

detailed description

The present invention will be described below according to the embodiments shown in the accompanying drawings. It can be thought that embodiment disclosed this time is an illustration in every point, and is not restrictive. The scope of the present invention is not limited by the description of the following embodiments but only by the scope of the claims, and includes the same meaning as the scope of the claims and all modifications within the scope of the claims.

Example 1

Referring to FIG. 1 , an integrated device for vehicle instrumentation and central control includes a single-chip MCU 101, a system-on-chip SOC102, a part of the core 103 of the SOC102, other cores 104 of the SOC102, an internal image processor 105 of the SOC, and an instrument LCD screen 106 and touch LCD screen 107. The MCU101 is connected with the SOC102, and is responsible for collecting vehicle alarm information such as vehicle speed, oil quantity and temperature, depicting instrument panels, pointers and other instrument images, and sending the instrument images to the SOC102; the SOC102 communicates with the MCU101, The instrument LCD screen 106 and the touch LCD screen 107 are connected, and part of its core 103 runs a high-security real-time operating system to obtain the instrument image and hand it over to the SOC internal image processor 5; other cores 104 of the SOC 102 run a common security real-time operating system , generate application images such as maps and phone lists, and hand them over to the SOC internal image processor 105; Superposition and synthesis are carried out and output to the liquid crystal screen 106 of the instrument. At the same time, other cores 104 of the SOC 102 realize the functions of the central control host such as radio, bluetooth phone, map navigation, multimedia player, etc., generate central control images, and output them to the touch LCD screen 107 .

The circuit design between different types of cores of heterogeneous SOCs is independent. Each core has its own front-side bus and does not interfere with each other when accessing peripherals. The cores have a fixed logical structure, a first-level cache, and a second-level cache. Logical units such as cache, execution unit, instruction-level unit, and bus interface. Each core connects the CPU core directly to external I/O through hypertransfer technology, and integrates memory control technology so that each core has its own high-speed cache that can be used. Each has its own direct I/O channel, and there is no problem of resource contention.

Heterogeneous SOCs with high-performance processing and cores running advanced operating systems and cores that implement control functions are preferred. Each core has its own front-side bus, cache, and memory. The circuit support is independent and can be used on different types of cores. Run a different operating system. Taking TI's new SitaraTM AM57x processor family as an example, this device uses the ARM Cortex-A15 core for high-performance processing and advanced operating system operation as the core and the ARM Cortex-M4 core for control functions.

In this embodiment, the high-security real-time operating system includes FreeRTOS and the like; the common-safety real-time system includes the QNX system and the like.

Example 2

Referring to FIG. 2 , an integrated vehicle instrument and central control device includes a single-chip MCU 201 , a system-on-chip SOC 202 , an independent image processor 203 , an instrument LCD screen 204 and a touch LCD screen 205 . The MCU 201 is connected with the SOC 202 and the independent image processor 203, and is responsible for collecting vehicle alarm information such as vehicle speed, fuel quantity and temperature, drawing instrument panels, pointers and other instrument images, and sending the instrument images to the independent image processor 203 ; The SOC202 is connected to the MCU201, the independent image processor 203, and the touch LCD screen 205 respectively, and the SOC202 runs a common security real-time operating system to generate application images such as maps and phone lists, and send them to the independent image processor 203; The independent image processor 203 superimposes and synthesizes the instrument image output by the MCU 201 and application images such as maps and phone lists output by the SOC 202 , and outputs them to the instrument LCD screen 204 . At the same time, the SOC 202 realizes the functions of the central control host such as radio, bluetooth phone, map navigation, multimedia player, etc., generates central control images, and outputs them to the touch LCD screen 205 .

In this embodiment, the common safety real-time system includes the QNX system and the like.

Claims (12)

1. An integrated device for vehicle instrumentation and central control, characterized in that it comprises: An information collector, used to collect instrument information and central control information, which is electrically connected to the instrument information processing unit and the central control information processing unit; A meter information processing component, which is electrically connected to the information collector and the display screen, and is used to generate a meter image according to the meter information collected by the information collector; A central control information processing component, which is electrically connected to the information collector and the display screen, and is used to generate a central control image according to the central control information collected by the information collector; and A display screen is electrically connected to the meter information processing part and the central control information processing part respectively, and is used to display the meter image and the central control image. 2. The integrated device of vehicle instrumentation and central control according to claim 1, characterized in that the functions of the instrumentation information processing component and the central control information processing component are realized by the same SOC. 3. The integrated device of vehicle instrumentation and central control according to claim 2, wherein the SOC has a plurality of cores, and the operation of each core does not affect each other. 4. The vehicle meter and central control integrated device according to claims 1-3, wherein the SOC is a heterogeneous SOC. 5. The integrated device of vehicle instrumentation and central control according to claim 3, characterized in that, the SOC also includes an internal image processor, and part of the cores of the SOC and the internal image processor jointly realize instrumentation functions , other cores realize the central control function, and the core for realizing the instrument function and the core for realizing the central control function have independent circuit support. 6. The integrated device of vehicle instrumentation and central control according to claim 5, characterized in that, the kernel that realizes the instrumentation function runs a high-security real-time operating system, and the kernel that realizes the central control function runs a normal security system real-time operating system. 7. The integrated device of vehicle instrumentation and central control according to claim 5, characterized in that, the kernel that realizes the instrumentation function together with the internal image processor is based on the ARM Cortex-M3, ARM Cortex-M4 architecture kernel The core for realizing the central control function is based on ARM Cortex-A9, ARM Cortex-A15, ARM Cortex-A57, ARM Cortex-A72 architecture. 8. The integrated device of vehicle instrumentation and central control according to claim 7, characterized in that, the kernel that realizes the instrumentation function together with the internal image processor is a kernel based on the ARM Cortex-M4 architecture, and the operation of its operation The system is a FreeRTOS operating system; the kernel that realizes the central control function is a kernel based on the ARM Cortex-A72 architecture, and the operating system it runs is a QNX operating system. 9. The integrated device of vehicle instrumentation and central control according to claim 1, characterized in that, the central control information processing part is an SOC, and the instrumentation information processing part is an independent image processor arranged outside the SOC . 10. A method for realizing the integration of vehicle instrumentation and central control, comprising the following steps: The instrument information and central control information are collected by an information collector, and sent to the instrument information processing part and the central control information processing part respectively; The meter information processing component receives the meter information and generates a meter image; The central control information processing component receives the central control information and generates a central control image; and The display screen receives and displays the instrument image and the central control image. 11. The integrated method of vehicle instrument and central control according to claim 10, characterized in that, the information collector is a single-chip microcomputer, and the functions of the instrument information processing part and the central control information processing part are composed of a multi-core SOC implementation, wherein the SOC also includes an internal image processor, part of the cores of the SOC and the internal image processor jointly realize the instrument function, other cores implement the central control function, and the core for realizing the instrument function and the central control function The core has independent circuit support. 12. The integrated method of vehicle instrumentation and central control according to claim 10, characterized in that, the central control information processing part is an SOC, and the instrumentation information processing part is an independent image processor arranged outside the SOC .