A distributed driving recorder power management system and method

Abstract

The present invention discloses a distributed power management system and method for a driving recorder. The system includes a power STC management module and multiple power STC management sub-modules. The power STC management module is respectively connected to each power STC management sub-module, and each power STC management sub-module is respectively connected to one or more application modules. When each application module works, it sends an application to the corresponding power STC management sub-module. The power STC management sub-module summarizes the power status reported by the application module and uploads it to the power STC management module, and the power STC management module uniformly regulates the power resources of the whole machine. The task processing efficiency of the present invention is relatively high and the reliability is high. Due to the adoption of distributed and modular design, the cohesion of the system is improved, the coupling of the system is reduced, and the reusability and portability of the system are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of driving recorders, and in particular to a distributed-based driving recorder power management system and method. Background Art

[0002] With the wide application and development of commercial vehicles, the design requirements for commercial vehicle recorders are increasing day by day. The new national standard (GB / T19056-2021) and major vehicle manufacturers have put forward higher requirements for the functions and performance of commercial vehicle recorders.

[0003] In order to adapt to the increasingly complex actual driving application environment, there is an urgent need to implement a framework for distributed power management services with a wide range of applicable scenarios and strong reliability in the in-vehicle electronic product system, which is used for power state management of recorder products, status monitoring management in the life cycle of the terminal system, etc., to reduce the failure rate of recorder products and ensure the reliability of commercial vehicles.

[0004] In the existing embedded systems of commercial vehicle recorders, the state management systems used are all single-processing mechanisms. For all tasks, serial processing is performed, and the next task can only be processed after one task is completed. This serial processing mode has many disadvantages: 1. All tasks are piled up in a main program, which will make the whole mechanism very cumbersome. 2. The portability is relatively poor, and the difficulty of secondary development based on the program is relatively high. 3. In this mechanism, once an exception occurs, the entire processing flow may be blocked. Summary of the Invention

[0005] The purpose of the present invention is to provide a distributed-based driving recorder power management system and method to solve the technical problems of low task processing efficiency and poor fault tolerance of the existing commercial vehicle recorder power management system.

[0006] The purpose of the present invention is achieved by adopting the following technical solutions: A distributed-based driving recorder power management system includes a power STC management module and multiple power STC management sub-modules. The power STC management module is respectively connected to each power STC management sub-module, and each power STC management sub-module is respectively connected to one or more application modules. When each application module works, it will send an application to the corresponding power STC management sub-module. The power STC management sub-module summarizes the power states reported by the application modules and uploads them to the power STC management module, and the power STC management module uniformly regulates the power resources of the whole machine.

[0007] Furthermore, the application module is used to obtain the power status and vehicle ignition signal, wherein the power status includes the main power status and the internal lithium battery status of the recorder, the main power status is the main power status provided by the vehicle on which the recorder is installed, including connected, disconnected, overvoltage, undervoltage, and normal; the internal lithium battery status of the recorder is the status of the lithium battery that comes with the recorder, including connected, disconnected, undervoltage, and normal.

[0008] Furthermore, when the lithium battery is fully charged, it is necessary to ensure that the recorder can operate normally for no less than 10 minutes.

[0009] Furthermore, the power STC management module obtains the power status obtained by each application module, and after making a voting request to initiate shutdown or hibernation to each application module, makes a corresponding power control strategy.

[0010] Furthermore, the power control strategy includes: when the recorder detects that the ignition signal state is ON, if the main power state is normal at this time, the power STC management module does not perform regulation and the recorder works normally.

[0011] Furthermore, the power control strategy includes: when the recorder detects that the ignition signal state is ON, if the main power state is abnormal at this time, the power STC management module switches the power supply to the lithium battery; if the lithium battery state is normal at this time, the power STC management module initiates a shutdown vote to each application module of the recorder and performs a shutdown countdown. If the main power is restored within the preset time, the shutdown is canceled; if the lithium battery state is abnormal at this time, the power STC management module sends a shutdown vote to each application module of the recorder and enters the shutdown state.

[0012] Furthermore, the power control strategy includes: when the recorder detects that the ignition signal status is OFF, if the main power status is normal, a sleep vote is initiated and a sleep countdown is performed. When the ignition signal status changes from OFF to ON within the preset time, the sleep state is canceled; if the main power status is abnormal, the power STC management module switches the power supply to lithium battery.

[0013] Furthermore, if the lithium battery status is normal, the power supply STC management module sends a shutdown request to each application module of the recorder and performs a shutdown countdown. If the main power is restored within the preset time, the shutdown is canceled; if the lithium battery status is abnormal, the power supply STC management module sends a shutdown vote to each application module of the recorder and enters the shutdown state.

[0014] Furthermore, the application modules include a CAN application module, a JTT808 application module, a TGB19056 application module and a network application module.

[0015] A distributed-based power management method for a driving recorder, comprising the following steps:

[0016] S1: The application module obtains the power status and the vehicle ignition signal, and uploads them to the power STC management sub-module for summarization;

[0017] S2: The power STC management module decides the migration of the overall machine power status according to the summarization result of the power STC management sub-module.

[0018] The beneficial effects of the present invention are as follows: High task processing efficiency: If a specific computing task can be divided into several sub-tasks that run in parallel, these sub-tasks can be distributed to different nodes and run on these nodes simultaneously, thus accelerating the computing speed. In addition, the distributed system has a computing migration function. If the load on a certain node is too heavy, some of the jobs can be moved to other nodes for execution, thus reducing the load on this node. This job migration is called load balancing.

[0019] High reliability: The distributed system has high reliability. If a certain node fails, the remaining nodes can continue to operate, and the entire system will not collapse due to the failure of one or a few nodes. Therefore, the distributed system has good fault tolerance performance.

[0020] Low design cost: Each application (function) is a module, so each module can be used alone or in combination, which can perfectly meet the product requirements and flexibly support the low-cost requirements caused by future product function changes.

[0021] High function reusability: Since the system adopts a distributed and modular design, the cohesion of the system is improved and the coupling of the system is reduced, so the reusability and portability of the system are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 It is the system block diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein generally can be arranged and designed in a variety of different configurations.

[0025] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0027] Embodiment 1:

[0028] Refer to Figure 1 , a distributed driving recorder power management system, including a power STC management module and multiple power STC management sub-modules. The power STC management module is respectively connected to each power STC management sub-module, and each power STC management sub-module is respectively connected to one or more application modules. When each application module works, it will send an application to the corresponding power STC management sub-module. The power STC management sub-module summarizes the power states reported by the application modules and uploads them to the power STC management module, and the power STC management module uniformly regulates the power resources of the whole machine.

[0029] STC (Signal Tracking Center mechanism), the advantages of the Signal Tracking Center mechanism are mainly as follows: The program is developed based on C language, which increases the portability of the program; the main processing of power management is encapsulated by using the Signal Tracking Center mechanism, that is, it is easy to transplant and at the same time ensures the stability of the program; it combines the characteristics of the power supply on the actual vehicle and avoids the influence of voltage jitter on the vehicle-mounted product functions.

[0030] In this embodiment, when each application module performs the corresponding function, it will apply to its corresponding power STC management submodule, and the application module is used to obtain the power status and vehicle ignition signal, wherein the power status includes the main power status and the internal lithium battery status of the recorder. The main power status is the main power status provided by the vehicle where the recorder is installed, including connection, disconnection, overvoltage, undervoltage, and normal; the internal lithium battery status of the recorder is the lithium battery status of the recorder, including connection, disconnection, undervoltage, and normal. Furthermore, when the lithium battery is fully charged, it is necessary to ensure that the recorder can work normally for no less than 10 minutes.

[0031] In this embodiment, the power STC management module obtains the power status of each application module, and after making a voting request to initiate shutdown or hibernation to each application module, makes a corresponding power control strategy.

[0032] In this embodiment, the power control strategy includes: when the recorder detects that the ignition signal state is ON, if the main power state is normal at this time, the normal main power state means that the main power is connected and the voltage is normal, the power STC management module does not perform any regulation, and the recorder works normally.

[0033] In this embodiment, the power control strategy also includes: when the recorder detects that the ignition signal state is ON, if the main power state is abnormal at this time, the abnormal main power state includes that the main power is not connected, overvoltage, and undervoltage, at this time, the power STC management module switches the power supply to lithium battery power supply. Lithium battery power supply includes two situations: 1. If the lithium battery state is normal at this time, the normal lithium battery state includes that the lithium battery is connected and the voltage is normal. At this time, the power STC management module initiates a shutdown vote to each application (function) module of the recorder and starts a 10-minute shutdown timer. If each application module completes the sleep preparation work according to its own working status and informs the power STC management module through voting, when the 10-minute timer is reached, the system enters the shutdown state; if the 10 minutes are not reached and the main power returns to normal, the power STC management module cancels the 10-minute timer and notifies each application module of the recorder system that the main power voltage is normal. 2. If the lithium battery status is abnormal at this time, the abnormal lithium battery status includes that the lithium battery is not connected and the lithium battery is undervoltage. At this time, the power supply STC management module enters the emergency shutdown process and issues a shutdown vote to each application module of the recorder. When each application module completes the voting, the power supply STC management module controls the recorder to enter the shutdown state.

[0034] In this embodiment, the power control strategy further includes: when the recorder detects that the ignition signal status is OFF, if the main power supply status is normal, a sleep vote request is initiated, and a sleep timer of 5 minutes is started by default. If each application module completes the sleep preparation work according to its respective working status and notifies the power STC management module through voting, when the 5-minute timer expires, the system enters the sleep state. When the 5-minute timer has not expired, if the vehicle ignition status changes from OFF to ON, the power STC management module cancels the 5-minute timer and notifies each functional module of the recorder. When the power STC management module detects that the vehicle ignition status is OFF, if the main power supply is abnormally powered at this time, the main power supply abnormal power supply includes that the main power supply is not connected, overvoltage, undervoltage. At this time, the power STC management module switches the power supply to lithium battery power supply. At this time, there are two cases: 1. If the lithium battery status is normal at this time, the lithium battery status normal includes that the lithium battery is connected and the voltage is normal. At this time, the power STC management module sends a shutdown vote request to each application module of the recorder and starts a 10-minute shutdown timer. If each application module completes the sleep preparation work according to its respective working status and notifies the power STC management module through voting, when the 10-minute timer expires, the system enters the shutdown state; when the 10 minutes have not passed, if the main power supply returns to normal at this time. 2. If the lithium battery status is abnormal at this time, the lithium battery status abnormal includes that the lithium battery is not connected and the lithium battery is undervoltage. At this time, the power STC management module enters the emergency shutdown process and votes for emergency shutdown of each application module of the recorder. When each application module completes the voting, the power STC management module controls the recorder to enter the shutdown state.

[0035] In this embodiment, the application modules include a CAN application module, a JTT808 application module, a TGB19056 application module, and a network application module. When the recorder is in a normal working state, the above application modules will report the power supply status summary to their respective power STC management sub-modules according to their own situations. The power STC management sub-module uploads the aggregated status information to the power STC management module, and the power STC management module decides the migration of the overall machine power supply status.

[0036] The present invention has at least the following technical effects:

[0037] The task processing efficiency is relatively high: If a specific computing task can be divided into several sub-tasks that run in parallel, these sub-tasks can be distributed to different nodes and run on these nodes simultaneously, thus accelerating the computing speed. In addition, the distributed system has a computing migration function. If the load on a certain node is too heavy, some of the jobs can be moved to other nodes for execution, thus reducing the load on that node. This kind of job migration is called load balancing.

[0038] High reliability: The distributed system has high reliability. If a certain node fails, the remaining nodes can continue to operate, and the entire system will not collapse due to the failure of one or a few nodes. Therefore, the distributed system has good fault tolerance performance.

[0039] Lower design cost: Each application (function) is a module, so each module can be used alone or in combination, which can perfectly meet the product requirements and flexibly support the low-cost requirements caused by future product function changes.

[0040] High function reusability: Since the system adopts distributed and modular design, the cohesion of the system is improved and the coupling of the system is reduced, so the reusability and portability of the system are greatly improved.

[0041] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily required by this application.

[0042] In the above embodiments, the basic principles, main features and advantages of the present invention are described. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A distributed power management system for a driving recorder, characterized in that, It includes a power STC management module and multiple power STC management submodules. The power STC management module is connected to each power STC management submodule respectively. Each power STC management submodule is connected to one or more application modules respectively. When each application module is working, it will send an application to the corresponding power STC management submodule. The power STC management submodule summarizes the power status reported by the application module and uploads it to the power STC management module. The power STC management module uniformly regulates the power resources of the whole machine. The application module is used to obtain the power status and vehicle ignition signal, wherein the power status includes the main power status and the internal lithium battery status of the recorder. The main power status is the main power status provided by the vehicle on which the recorder is installed, including connected, disconnected, overvoltage, undervoltage, and normal; the internal lithium battery status of the recorder is the status of the lithium battery that comes with the recorder, including connected, disconnected, undervoltage, and normal.

2. The power management system of a distributed driving recorder according to claim 1, wherein, When the lithium battery is fully charged, the recorder must be able to operate normally for at least 10 minutes.

3. The power management system of a distributed driving recorder according to claim 1, characterized in that, The power STC management module obtains the power status of each application module, and after making a voting request to each application module to shut down or sleep, makes a corresponding power control strategy.

4. The power management system of a distributed driving recorder according to claim 3, wherein The power control strategy includes: when the recorder detects that the ignition signal state is ON, if the main power state is normal at this time, the power STC management module does not perform regulation and the recorder works normally.

5. The power management system of a distributed driving recorder according to claim 3, characterized in that, The power control strategy includes: when the recorder detects that the ignition signal state is ON, if the main power state is abnormal at this time, the power STC management module switches the power supply to the lithium battery; if the lithium battery state is normal at this time, the power STC management module initiates a shutdown vote to each application module of the recorder and performs a shutdown countdown. If the main power is restored within the preset time, the shutdown is canceled; if the lithium battery state is abnormal at this time, the power STC management module sends a shutdown vote to each application module of the recorder and enters the shutdown state.

6. The power management system of a distributed driving recorder according to claim 3, wherein, The power control strategy includes: when the recorder detects that the ignition signal state is OFF, if the main power state is normal, a sleep vote is initiated and a sleep countdown is performed. When the ignition signal state changes from OFF to ON within the preset time, the sleep state is canceled; if the main power state is abnormal, the power STC management module switches the power supply to lithium battery.

7. The power management system of a distributed driving recorder according to claim 6, wherein, If the lithium battery is in normal condition, the power supply STC management module sends a shutdown request to each application module of the recorder and performs a shutdown countdown. If the main power supply is restored within the preset time, the shutdown is canceled; If the lithium battery status is abnormal, the power supply STC management module sends a shutdown vote to each application module of the recorder and enters the shutdown state.

8. The power management system of a driving recorder based on distribution according to claim 1, characterized in that, The application modules include a CAN application module, a JTT808 application module, a TGB19056 application module and a network application module.

9. A distributed-based power management method for a driving recorder, implemented based on the distributed-based power management system for a driving recorder described in any one of claims 1 to 8, characterized in that, The steps include: S1: The application module obtains the power status and vehicle ignition signal, and uploads them to the power STC management submodule for summary; S2: The power STC management module determines the power state migration of the entire device based on the summary results of the power STC management submodules.

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