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Vehicle-mounted terminal device based on double central processing units (CPUs) and control method

An in-vehicle terminal and control method technology, which is applied in program control, computer control, general control system, etc., can solve the problems such as the difficulty of taking into account the security functions of the audio-visual entertainment in-vehicle system, the high power consumption of the android device, the communication of the android system, etc. Humanized design and operation, enhanced entertainment, enhanced entertainment effect

Active Publication Date: 2015-07-22
SHENZHEN HANGSHENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The entertainment effect of the traditional vehicle terminal system is average. After the introduction of the android system, the entertainment of the system can be greatly enhanced, but the android system cannot communicate with the CAN bus of the car, and the security function cannot be guaranteed, that is, the audio-visual entertainment of the android device, It is difficult to balance the basic functions such as telephone and navigation with the security function of the vehicle system at the same time; moreover, the power consumption of android devices is high, which is also a major challenge to the vehicle system

Method used

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  • Vehicle-mounted terminal device based on double central processing units (CPUs) and control method

Examples

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Embodiment 1

[0033] This example provides a vehicle-mounted terminal device based on dual CPUs, including at least one main CPU and one sub-CPU;

[0034] Wherein, the main CPU is used to run the android system and is connected with the display screen;

[0035] The secondary CPU is used to monitor the CAN bus of the automobile and is connected with the main CPU. The secondary CPU feeds back the data of the automobile CAN bus to the main CPU through the serial port in real time, and the main CPU passes the data of the automobile CAN bus through the vehicle condition The information module is displayed on the display screen; meanwhile, the sub-CPU controls the power supply state of the main CPU through the power supply chip, and automatically turns off the power supply of the main CPU when the car stops, and the sub-CPU enters a deep sleep mode.

[0036] The structure diagram of this example is as follows figure 1 As shown, in this example, the secondary CPU controls the power supply chip to...

Embodiment 2

[0040] On the basis of Embodiment 1, this example also includes a program detection module, which is used to detect and control the program run by the main CPU; the sub-CPU automatically detects whether the program run by the main CPU is a necessary program, if it is not a necessary program, Then close the program and use hardware to cut off the peripheral device corresponding to the program; if the program is necessary, wake up the program through a wake-up signal.

[0041] In the existing vehicle-mounted terminal devices, although the foreground shows that there are relatively few running programs, in fact, many programs are running in the background, and most of these programs are unnecessary, at least in the current state. The program running in the background will inevitably cause a lot of energy waste; in this example, the program detection module can automatically detect whether the program is running in the foreground or whether it has been running in the last few minut...

Embodiment 3

[0044] This example provides a kind of control method based on dual-CPU vehicle-mounted terminal device, at least comprises a main CPU and a sub-CPU; And comprises the following steps,

[0045] Automobile state judging step, described auxiliary CPU controls the power supply state of main CPU according to automobile state and by power supply chip, if automobile state is to shut down the power supply of main CPU automatically, simultaneously auxiliary CPU enters deep sleep mode; Otherwise enter monitoring step;

[0046] Monitoring step, the secondary CPU monitors the CAN bus of the automobile, and feeds back the data of the CAN bus of the automobile to the main CPU through the serial port in real time, and the main CPU then displays the data of the CAN bus of the automobile on the display screen through the vehicle condition information module. In the event of an accident, it enters the step of calling for help;

[0047] In the step of calling for help, both the main CPU and the...

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Abstract

The invention provides a vehicle-mounted terminal device based on double central processing units (CPUs) and a control method. The vehicle-mounted terminal device based on the double CPUs at least comprises a main CPU and an auxiliary CPU, the main CPU is used for operating an android system and connected with a display screen, the auxiliary CPU is used for monitoring an automobile controller area network (CAN) bus and connected with the main CPU, the auxiliary CPU enables data of the automobile CAN bus to be fed back to the main CPU through a serial port in real time, and the main CPU enables the data of the automobile CAN bus to be displayed on the display screen through a vehicle condition information module. Simultaneously, the auxiliary CPU controls power supply state of the main CPU through a power supply chip, a power supply of the main CPU is closed automatically when an automobile is parked, and the auxiliary CPU enters into deep sleep mode. The vehicle-mounted terminal device based on double CPUs and the control method can operate the android system through the main CPU, effectively reduce power consumption, simultaneously achieve remote anti-theft comprehensively, and meet security and protection requirements.

Description

technical field [0001] The present invention relates to a vehicle-mounted terminal, in particular to a dual-CPU-based vehicle-mounted terminal device, and to a control method for a dual-CPU-based vehicle-mounted terminal device. Background technique [0002] The entertainment effect of the traditional vehicle terminal system is average. After the introduction of the android system, the entertainment of the system can be greatly enhanced, but the android system cannot communicate with the CAN bus of the car, and the security function cannot be guaranteed, that is, the audio-visual entertainment of the android device, It is difficult to balance the basic functions such as telephone and navigation with the security function of the vehicle system at the same time; moreover, the power consumption of android devices is high, which is also a major challenge to the vehicle system. Contents of the invention [0003] The technical problem to be solved by the present invention is to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
Inventor 何照丹郑涛
Owner SHENZHEN HANGSHENG ELECTRONICS
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