CN115437322A - Distributed task scheduling method and system based on vehicle-mounted Ethernet - Google Patents

Abstract

The invention discloses a distributed task scheduling method and a distributed task scheduling system based on a vehicle-mounted Ethernet, wherein the method comprises the following steps: s1: when the domain controllers are awakened, task scheduling instances deployed in the domain controllers register to a task scheduling center and actively pull an updated task list; s2: a user sets a task through a vehicle-mounted machine system, and the vehicle-mounted machine system synchronously sets information to a task scheduling center; s3: the task scheduling center receives task information set by a user, updates a task list and simultaneously informs each registered online domain task scheduling instance of updating the task list; s4: the task scheduling center and the task scheduling instance in the power-on state scan a task list at the same time; s5: and after meeting the task execution triggering condition, the task scheduling instance calls the task and executes the service control vehicle. The invention manages and schedules tasks in a unified way through the task scheduling center, then the distributed task scheduling embodiment executes services, and the domain controller is utilized to realize the control of vehicle hardware and equipment.

Description

A Distributed Task Scheduling Method and System Based on Vehicle Ethernet

technical field

The invention is used in the fields of automotive electronics and Internet of Vehicles, and provides a distributed task scheduling method and system based on the automotive Ethernet.

Background technique

With the gradual improvement of the intelligent level of automobiles, car owners' demand for car operability is also getting stronger and stronger. Functions such as reservation of seat heating and reservation of turning on air conditioning are emerging one after another, bringing a good car experience to car owners. At the same time, there are more and more demands for vehicle self-management, regular collection of key vehicle operation data, regular upload of vehicle-side data to the cloud, and regular OTA upgrades to perform certain tasks.

There are currently some solutions for background requirements, such as patent numbers CN202011282188.5 and CN202110555883.2. The overall idea is to integrate the vehicle task scheduling and business function logic into the vehicle TBOX terminal, and transmit execution instructions to the vehicle controller through the CAN communication network Take control of the vehicle. This method still has some shortcomings:

In the existing technology, the functions are deployed centrally in the TBOX. As the types of services and the number of tasks increase, the resource requirements of the functions also increase. Simply expanding TBOX resources for this purpose is not conducive to the balanced utilization of vehicle resources, and the scalability is poor. Poor; the task scheduling function is strongly coupled with the business function logic involved in task execution. A certain task often needs to be processed with business-related logic before execution, resulting in the overall function becoming thicker and thicker. Any modification of a business function may affect other tasks. business.

Contents of the invention

The purpose of the present invention is to provide a distributed task scheduling method based on the vehicle Ethernet. Distributed deployment of the task scheduling function on multiple domain controllers of the vehicle, unified management by the task scheduling center, using the large bandwidth and low-latency communication capabilities of the vehicle Ethernet to achieve high performance and scalability in the timing execution of a large number of tasks Extended, highly available vehicle task scheduling function.

In order to achieve the above object, the present invention adopts the following technical solutions: a distributed task scheduling method based on vehicle Ethernet, comprising the following steps:

S1: When each domain controller wakes up, the task scheduling instance deployed on each domain controller registers with the task scheduling center and actively pulls and updates the task list;

S2: The user sets the task through the vehicle-machine system, and the vehicle-machine system synchronously sets the information to the task dispatching center;

S3: The task scheduling center receives the task information set by the user, updates the task list, and notifies the registered online task scheduling instances of each domain to update the task list;

S4: The task scheduling center scans the task list simultaneously with the task scheduling instance in the power-on state;

S5: After the task execution trigger condition is satisfied, the task scheduling instance invokes the task and executes the service to control the vehicle.

Further, step S5 includes:

The task scheduling instance scans the task list in real time, and obtains a shared lock lock request from the task scheduling center after the task execution trigger condition is met;

After the lock is successfully locked, the task scheduling instance calls the task execution service to control the vehicle, and sends a task shared lock unlock request to the task scheduling center after the task execution is completed.

Further, step S4 includes:

If the domain controller is in the power-on state, execute S5;

If the domain controller is in a power-off state, the task scheduling center wakes up the domain controller to which the task execution service belongs through a network management message.

Further, in the step S2, the setting information includes task execution trigger conditions, task execution service and service home domain controller.

Further, the task execution trigger condition is task execution time.

The present invention also provides a distributed task scheduling system based on vehicular Ethernet, adopting the above-mentioned distributed task scheduling method based on vehicular Ethernet, including:

Vehicle-machine system: used for information interaction between people and vehicles, users set tasks through the vehicle-machine system;

TBOX: used to communicate with the background system/mobile application to realize the vehicle information display and control of the mobile application;

Task scheduling center: used for unified management and scheduling tasks;

Example of task scheduling: used to scan the task list and execute the task;

Domain controller: according to the task, control the hardware device;

The task dispatching center, the vehicle-machine system and the task dispatching embodiment all adopt the vehicle-mounted Ethernet connection;

The task scheduling embodiment is set on the domain controller.

Further, the user task settings include task execution conditions;

The task dispatching center also includes a task triggering module; the task triggering module is used for collecting vehicle information and judging whether the collected vehicle information satisfies the task execution conditions in the user's task setting.

Further, the task execution conditions include task execution time; the vehicle information is the current time;

The task triggering module includes a time unit, and the time unit is used to obtain the current time, which can satisfy the basic processing of time type data.

Further, the task scheduling center includes a judging module for judging whether the domain controller is powered on;

The task scheduling center also includes a wake-up module for waking up the domain controller.

Compared with the prior art, the present invention has the following beneficial effects:

1. The task scheduling function is distributed and deployed in multiple domain controllers of the vehicle as needed, effectively utilizing the resources of multiple domain controllers of the vehicle, with high availability and scalability;

2. The task scheduling center decides the wake-up strategy according to the power-on situation of the vehicle. When it needs to be woken up, only one domain controller is woken up to process the task, saving energy consumption;

3. Each task scheduling instance processes tasks in parallel through the shared lock mechanism, and performs message communication and command issuance through the vehicle-mounted Ethernet. The large bandwidth and low-latency characteristics of Ethernet can ensure the real-time nature of task processing;

4. Use service-oriented functions to realize task scheduling and execution. Task scheduling and business logic are decoupled. The specific business logic is implemented by the final execution end of the task, and the business does not affect each other.

Description of drawings

The invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

Accompanying drawing 1: the frame diagram of a kind of distributed task scheduling system based on vehicle Ethernet of the present invention;

Accompanying drawing 2: the frame diagram of the embodiment in a kind of distributed task scheduling system based on vehicle Ethernet of the present invention;

Accompanying drawing 3: The flow chart of a kind of distributed task scheduling method based on vehicle Ethernet of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts use the same figure numbers, and implementations that are not shown or described in the drawings The method is a form known to those of ordinary skill in the art. Explanation of terms: car-machine system: the abbreviation of in-vehicle infotainment products, which realizes the information communication between people and cars. TBOX: Vehicle communication module. ECU: electronic control unit, a special microcomputer controller for automobiles, responsible for controlling hardware devices. Domain controller: Integrate similar and separated ECU functions into a processor hardware platform, which is composed of domain master processor, operating system, application software and algorithms. Vehicle Ethernet: A new type of local area network technology that uses Ethernet to connect electronic units in vehicles.

Referring to Fig. 1-Fig. 3, the present invention provides a kind of distributed task scheduling method based on vehicle Ethernet, comprising the following steps:

S1: When each domain controller wakes up, the task scheduling instance deployed on each domain controller registers with the task scheduling center and actively pulls and updates the task list;

S2: The user sets the task through the vehicle-machine system, and the vehicle-machine system synchronously sets the information to the task dispatching center;

S3: The task scheduling center receives the task information set by the user, updates the task list, and notifies the registered online task scheduling instances of each domain to update the task list;

S4: The task scheduling center scans the task list simultaneously with the task scheduling instance in the power-on state;

S5: After the task execution trigger condition is satisfied, the task scheduling instance invokes the task and executes the service to control the vehicle.

The present invention manages and dispatches tasks in a unified manner through the task dispatching center, then executes the service through the distributed task dispatching embodiment, and finally uses the domain controller to realize the control of vehicle hardware and equipment. In the existing technology, the functions are deployed centrally in the TBOX. As the types of services and the number of tasks increase, the resource requirements of the functions also increase. Simply expanding TBOX resources for this purpose is not conducive to the balanced utilization of vehicle resources, and the scalability is poor. Poor, and the task scheduling function is strongly coupled with the business function logic involved in task execution. A certain task often needs to be processed with business-related logic before execution, resulting in the overall function becoming thicker and thicker. The modification of any business function may affect Other business. Compared with the prior art, the present invention distributes and deploys the task scheduling function in multiple domain controllers of the vehicle as required, effectively utilizes the resources of multiple domain controllers of the vehicle, and has high availability and scalability; adopts service-oriented The function realizes task scheduling and execution, and task scheduling is decoupled from business logic. The specific business logic is implemented by the final execution end of the task, and the business does not affect each other.

In some embodiments, step S5 includes:

The task scheduling instance scans the task list in real time, and obtains a shared lock lock request from the task scheduling center after the task execution trigger condition is met;

After the lock is successfully locked, the task scheduling instance calls the task execution service to control the vehicle, and sends a task shared lock unlock request to the task scheduling center after the task execution is completed.

Because the task scheduling embodiment will obtain a shared lock request from the task scheduling center before executing the service, and will send a task shared lock unlocking request to the task center after executing the task, which improves the security and reliability of data transmission on the one hand; On the one hand, it facilitates the scheduling management of the task center, improves the efficiency and accuracy of the task center scheduling, and further improves the security and reliability of the task center executing tasks according to the user's setting information.

In some embodiments, step S4 also includes:

If the domain controller is in the power-on state, execute S5;

If the domain controller is in a power-off state, the task scheduling center wakes up the domain controller to which the task execution service belongs through a network management message.

This setting judges whether the domain controller is powered on, and then decides whether to wake it up through the network management message. Since there are many domain controllers in the vehicle, if these domain controllers are always powered on, the energy consumption of the vehicle will increase, and some domain controllers will accelerate aging and damage, so it is necessary to make some of them infrequent or standby The domain controller keeps power off when there is no task, and wakes up first when there is a task or needs, and then executes the task execution service. This reduces the load on the vehicle and achieves the effect of saving energy.

In some embodiments, in the step S2, the setting information includes task execution trigger conditions, task execution service and domain controller to which the service belongs.

Due to the above settings, the task center can quickly identify the setting information, and schedule tasks for the domain controller to which the service belongs. When the task execution trigger condition is met, the task scheduling instance executes the service, and the domain controller performs corresponding operations.

Among them, the task execution trigger conditions can be task execution time, task execution temperature, task execution vehicle speed, task execution altitude, etc. These task execution trigger conditions can collect information through sensors and feed it back to the mission center. After the mission center obtains the collected information Compare with the task execution trigger conditions in the setting information, judge whether it is triggered, and decide whether to execute the task and perform the service.

In some embodiments, the task execution trigger condition is preferably task execution time.

With the gradual improvement of the intelligent level of automobiles, car owners' demand for car operability is also getting stronger and stronger. Functions such as reservation of seat heating and reservation of turning on air conditioning are emerging one after another, bringing a good car experience to car owners. At the same time, there are more and more demands for vehicle self-management, regular collection of key vehicle operation data, regular upload of vehicle-side data to the cloud, and regular OTA upgrades to perform certain tasks. Therefore, in this embodiment, the task execution time is selected as the task execution trigger condition, which can meet the user's increasingly strong operational needs and improve the user's convenience and satisfaction.

The present invention provides a distributed task scheduling system based on vehicle Ethernet, adopting the above-mentioned distributed task scheduling method, including:

Vehicle-machine system: used for information interaction between people and vehicles, users set tasks through the vehicle-machine system;

TBOX: used to communicate with the background system/mobile application to realize the vehicle information display and control of the mobile application;

Task scheduling center: used for unified management and scheduling tasks;

Example of task scheduling: used to scan the task list and execute the task;

Domain controller: according to the task, control the hardware device;

The task dispatching center, the vehicle-machine system and the task dispatching embodiment all adopt the vehicle-mounted Ethernet connection;

The task scheduling embodiment is set on the domain controller.

Specifically, 1. The functions of the task scheduling center include:

1) Provide a task scheduling instance registration interface, each domain task scheduling instance will actively register after startup, and the scheduling center will monitor the online status of each execution instance;

2) Provide a task setting interface, and obtain the task information synchronized by the vehicle-machine system through the interface, including task execution time, task execution service and domain controller to which the service belongs, update the task list and notify the registered task scheduling instances in each domain to update synchronously;

3) Shared lock management. The task scheduling instance deployed in each domain obtains the task shared lock from the dispatch center before executing the task. The dispatch center detects whether the task already has a shared lock. If it does not exist, it allocates the lock and returns a successful result. If it exists, it returns failure result;

4) Task scanning and wake-up function. Scan the task list in real time. When a certain task execution time is reached and no domain controller is in the power-on state, the domain controller to which the task execution service belongs will be awakened through the network management message.

2. The car machine system task setting interface and setting synchronization function. As the entrance for users to set tasks, the car-machine system needs to provide task setting interfaces in the corresponding function modules according to the task type, such as providing an entry for setting the seat heating start time in the seat control function module, and providing an air-conditioning start time setting in the air-conditioning control module entrance, etc.;

3. Task scheduling function. The task scheduling function is distributed and deployed in multiple domain controllers of the vehicle, such as the cockpit domain controller and the vehicle control domain controller. As a task execution node, it needs to have the following functions:

1) Active registration function. When the task scheduling instance is started, it needs to actively register to the task scheduling center and pull and update the full task list;

2) Task scanning and task shared lock acquisition. Scan the task list in real time, obtain the shared lock of the corresponding task from the task scheduling center when the specified time is reached, execute the task when the lock is successfully obtained, and skip this task if the lock fails to be obtained;

3) Task execution function, which controls the vehicle to perform corresponding actions through service calls during the task execution phase;

4. The vehicle control function is service-oriented, and the final execution end of each task is responsible for processing the business function logic and providing external services.

In the existing technology, CAN is often used for signal transmission, but the vehicle task scheduling function of CAN signals is less flexible and maintainable. The signal sending and receiving relationship and routing information are hard-coded in the compilation stage. All relevant functions on the entire link from the bottom vehicle controller to the upper application need to be written and configured, and any modification of the functions requires adjustment of the vehicle communication matrix.

The distributed task scheduling system in the present invention is based on Ethernet for signal transmission and communication, and has high flexibility and good maintainability. Due to the large bandwidth and low delay characteristics of Ethernet, the real-time performance of task processing can be guaranteed.

When in use, the user first sets the task through the vehicle-machine system, and transmits the task setting to the task scheduling center through TBOX, and the task scheduling center conducts unified management and scheduling tasks to the task scheduling embodiment according to the task setting, and finally the task scheduling embodiment executes the task execution Service, the domain controller controls the corresponding hardware device according to the service and task, realizes the user's task setting, and meets the user's needs.

In some embodiments, the task dispatching center further includes a task triggering module; the task triggering module is used to collect vehicle information and determine whether the collected vehicle information meets the task execution conditions in the user's task settings.

The specific vehicle information may be task execution time, task execution temperature, task execution vehicle speed, task execution altitude, etc. The task trigger module is provided with a sensor for collecting vehicle information.

In some embodiments, the execution condition in the task trigger module is the task execution time; the vehicle information is the current time;

The task triggering module includes a time unit, and the time unit is used to obtain the current time, which can satisfy the basic processing of time type data.

With the gradual improvement of the intelligent level of automobiles, car owners' demand for car operability is also getting stronger and stronger. Functions such as reservation of seat heating and reservation of turning on air conditioning are emerging one after another, bringing a good car experience to car owners. At the same time, there are more and more demands for vehicle self-management, regular collection of key vehicle operation data, regular upload of vehicle-side data to the cloud, and regular OTA upgrades to perform certain tasks. Therefore, in this embodiment, the task execution time is selected as the task execution trigger condition, which can meet the user's increasingly strong operational needs and improve the user's convenience and satisfaction.

In some embodiments, the task scheduling center includes a judging module for judging whether the domain controller is powered on;

The task scheduling center also includes a wake-up module for waking up the domain controller.

This setting judges whether the domain controller is powered on through the judgment module, and then decides whether to wake up the domain controller through the wake-up module. Since there are many domain controllers in the vehicle, if these domain controllers are always powered on, the energy consumption of the vehicle will increase, and some domain controllers will accelerate aging and damage, so it is necessary to make some of them infrequent or standby The domain controller keeps power off when there is no task, and wakes up first when there is a task or needs, and then executes the task execution service. This reduces the load on the vehicle and achieves the effect of saving energy.

The method and system for distributed task scheduling based on vehicle Ethernet provided by the present invention have been introduced in detail above. The description of specific embodiments is only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (9)

1. a distributed task scheduling method based on vehicle ethernet, it is characterized in that, comprising the following steps: S1: When each domain controller wakes up, the task scheduling instance deployed on each domain controller registers with the task scheduling center and actively pulls and updates the task list; S2: The user sets the task through the vehicle-machine system, and the vehicle-machine system synchronously sets the information to the task dispatching center; S3: The task scheduling center receives the task information set by the user, updates the task list, and notifies the registered online task scheduling instances of each domain to update the task list; S4: The task scheduling center scans the task list simultaneously with the task scheduling instance in the power-on state; S5: After the task execution trigger condition is satisfied, the task scheduling instance invokes the task and executes the service to control the vehicle. 2. a kind of distributed task scheduling method based on vehicle Ethernet according to claim 1, is characterized in that, step S5 comprises: The task scheduling instance scans the task list in real time, and obtains a shared lock lock request from the task scheduling center after the task execution trigger condition is met; After the lock is successfully locked, the task scheduling instance calls the task execution service to control the vehicle, and sends a task shared lock unlock request to the task scheduling center after the task execution is completed. 3. a kind of distributed task scheduling method based on vehicle Ethernet according to claim 1, is characterized in that, step S4 comprises: If the domain controller is in the power-on state, execute S5; If the domain controller is in a power-off state, the task scheduling center wakes up the domain controller to which the task execution service belongs through a network management message. 4. a kind of distributed task scheduling method based on vehicle Ethernet according to claim 1, is characterized in that: In the step S2, the setting information includes task execution trigger conditions, task execution service and domain controller to which the service belongs. 5. a kind of distributed task scheduling method based on vehicle Ethernet according to claim 4, is characterized in that: The task execution trigger condition is task execution time. 6. A distributed task scheduling system based on vehicular Ethernet, adopting any one of claim 1-5 based on vehicular Ethernet distributed task scheduling method, characterized in that, comprising: Vehicle-machine system: used for information interaction between people and vehicles, users set tasks through the vehicle-machine system; TBOX: used to communicate with the background system/mobile application to realize the vehicle information display and control of the mobile application; Task scheduling center: used for unified management and scheduling tasks; Example of task scheduling: used to scan the task list and execute the task; Domain controller: according to the task, control the hardware device; The task dispatching center, the vehicle-machine system and the task dispatching embodiment all adopt the vehicle-mounted Ethernet connection; The task scheduling embodiment is set on the domain controller. 7. a kind of distributed task scheduling system based on vehicle Ethernet according to claim 6, is characterized in that: The user task settings include task execution conditions; The task dispatching center also includes a task triggering module; the task triggering module is used for collecting vehicle information and judging whether the collected vehicle information satisfies the task execution conditions in the user's task setting. 8. a kind of distributed task scheduling system based on vehicle Ethernet according to claim 7, is characterized in that: The task execution conditions include task execution time; the vehicle information is the current time; The task triggering module includes a time unit, and the time unit is used to obtain the current time, which can satisfy the basic processing of time type data. 9. a kind of distributed task scheduling system based on vehicle Ethernet according to claim 6, is characterized in that: The task scheduling center includes a judging module for judging whether the domain controller is powered on; The task scheduling center also includes a wake-up module for waking up the domain controller.

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