Method and device for determining driving state of indicator lamp

文档序号：1949564 发布日期：2021-12-10 浏览：15次中文

阅读说明：本技术 指示灯的驱动状态确定方法和装置 (Method and device for determining driving state of indicator lamp ) 是由刘丽冉冯春涛梁权于 2021-09-10 设计创作，主要内容包括：本发明提供一种指示灯的驱动状态确定方法和装置,该方法包括：使用第一控制器局域网络CAN总线向发动机的仪表发送第一指示报文,其中,仪表在成功驱动第一指示报文指示的指示灯点亮时,仪表反馈第一应答报文；在接收到仪表反馈的第一应答报文时,将指示灯的驱动状态设置为报文驱动。本发明发动机在确定仪表是否接收报文以及仪表成功驱动指示灯点亮,再设置指示灯的驱动状态,提高了指示灯的驱动状态的确定准确性。(The invention provides a method and a device for determining the driving state of an indicator light, wherein the method comprises the following steps: the method comprises the steps that a first indication message is sent to an instrument of an engine by using a first Controller Area Network (CAN) bus, wherein when the instrument successfully drives an indicator lamp indicated by the first indication message to light, the instrument feeds back a first response message; and when a first response message fed back by the instrument is received, setting the driving state of the indicator lamp as message driving. The engine of the invention determines whether the instrument receives the message and the instrument successfully drives the indicator lamp to light up, and then sets the driving state of the indicator lamp, thereby improving the determination accuracy of the driving state of the indicator lamp.)

1. A driving state determination method for an indicator lamp, characterized by comprising:

the method comprises the steps that a first indication message is sent to an instrument of an engine by using a first Controller Area Network (CAN) bus, wherein when an indicator lamp indicated by the first indication message is driven to be lightened by the instrument successfully, the instrument feeds back a first response message;

and when the first response message fed back by the instrument is received, setting the driving state of the indicator lamp as message driving.

2. The method for determining the driving state of an indicator light according to claim 1, wherein after the step of sending the first indication message to the meter of the engine using the first Controller Area Network (CAN) bus, the method further comprises:

when a first response message fed back by the instrument is not received within a first preset time length, a second indication message is sent to the instrument by using a second CAN bus;

and when a second response message fed back by the instrument is received, setting the driving state of the indicator lamp as a message 2 drive, wherein the message drive comprises a message 1 drive and the message 2 drive, and the message 1 drive is set when the engine receives the first response message.

3. The method for determining the driving state of the indicator light according to claim 2, wherein after the step of sending the second indication message to the meter using the second CAN bus, the method further comprises:

when a second response message fed back by the instrument is not received within the second preset time, whether the indicator lamp is connected with the hard wire or not is detected, when the indicator lamp is not connected with the hard wire, prompt information of the fact that the indicator lamp is not connected with the hard wire and a message line fails is output, and the driving state of the indicator lamp is set to be a default state, wherein the indicator lamp in the default state is not lightened.

4. The method for determining the driving state of an indicator lamp according to claim 3, wherein the step of detecting whether the indicator lamp is connected to a hard wire further comprises:

and when the indicator light is connected with a hard wire, setting the driving state of the indicator light to be hard wire driving.

5. The method of claim 2, wherein the step of sending the first indication message to the engine meter using the first CAN bus is preceded by the step of:

detecting whether the indicator light is connected with a hard wire or not;

the step of sending a first indication message to an instrument of the engine using a first controller area network, CAN, bus comprises:

and when the indicator lamp is not connected with the hard wire, a first CAN bus is used for sending a first indication message to an instrument of the engine.

6. The method for determining the driving state of an indicator lamp according to claim 5, wherein the step of detecting whether the indicator lamp is connected to a hard wire further comprises:

and when the indicator light is connected with a hard wire, setting the driving state of the indicator light to be hard wire driving.

7. The method for determining the driving state of the indicator light according to claim 5, wherein after the step of sending the second indication message to the meter using the second CAN bus, the method further comprises:

and when a second response message fed back by the instrument is not received within a second preset time, outputting prompting information of disconnection between an indicator lamp and a hard wire and message line fault, and setting the driving state of the indicator lamp to be a default state, wherein the indicator lamp in the default state is not lightened.

8. The method for determining the driving state of the indicator light according to claim 4 or 6, wherein when the determined state of the indicator light is hard-wired driving, a message fault reminding function is turned off.

9. The method for determining the driving state of the indicator light according to any one of claims 2 to 7, wherein when the driving state of the indicator light is message 1 driving or message 2 driving, a function of prompting a hard wire fault is turned off.

10. An engine, comprising:

the transmitting module is used for transmitting a first indication message to an instrument of the engine by using a first Controller Area Network (CAN) bus, wherein when the instrument successfully drives an indicator lamp indicated by the first indication message to light, the instrument feeds back a first response message;

and the setting module is used for setting the driving state of the indicator lamp as message driving when the first response message fed back by the instrument is received.

11. An engine, comprising: the system comprises a first CAN bus, a meter, an indicator light, a memory and a processor;

the first CAN bus is connected with the instrument and used for sending a first indication message to the instrument;

the instrument is connected with the indicator light and used for driving the indicator light to be turned on according to the first indication message;

the memory stores computer-executable instructions;

the processor executes the computer-executable instructions stored in the memory, so that the processor performs the method of determining the driving state of the indicator light according to any one of claims 1 to 9.

12. A computer-readable storage medium having stored therein computer-executable instructions for implementing the method of determining the driving state of an indicator light according to any one of claims 1 to 9 when executed by a processor.

13. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the method of determining the driving state of an indicator light of any one of claims 1 to 9.

Technical Field

The invention relates to an engine technology, in particular to a method and a device for determining a driving state of an indicator light.

Background

In the field of engine control, indicator light driving methods include message driving. Message driving means that an indicator lamp indicated by a message signal is driven by an instrument of an engine to be lightened.

In the prior art, after an Electronic Control Unit (ECU) of an engine sends a message to an instrument, the driving state of an indicator light is set to be message driving. The engine cannot know whether the instrument receives the message and whether the instrument drives the indicator lamp to light, so that the determination of the driving state of the indicator lamp is inaccurate.

Disclosure of Invention

The invention provides a method and a device for determining the driving state of an indicator light, which are used for solving the problem that the determination of the driving state of the indicator light is inaccurate.

In one aspect, the present invention provides a method for determining a driving state of an indicator light, including:

and when the first response message fed back by the instrument is received, setting the driving state of the indicator lamp as message driving.

In one embodiment, after the step of sending the first indication message to the meter of the engine by using the first controller area network CAN bus, the method further comprises:

when a first response message fed back by the instrument is not received within a first preset time length, a second indication message is sent to the instrument by using a second CAN bus;

In an embodiment, after the step of sending the second indication message to the meter by using the second CAN bus, the method further includes:

In an embodiment, after the step of detecting whether the indicator light is connected to a hard wire, the method further includes:

and when the indicator light is connected with a hard wire, setting the driving state of the indicator light to be hard wire driving.

In one embodiment, before the step of sending the first indication message to the meter of the engine by using the first CAN bus, the method further includes:

detecting whether the indicator light is connected with a hard wire or not;

the step of sending a first indication message to an instrument of the engine using a first controller area network, CAN, bus comprises:

and when the indicator lamp is not connected with the hard wire, a first CAN bus is used for sending a first indication message to an instrument of the engine.

In an embodiment, after the step of detecting whether the indicator light is connected to a hard wire, the method further includes:

and when the indicator light is connected with a hard wire, setting the driving state of the indicator light to be hard wire driving.

In an embodiment, after the step of sending the second indication message to the meter by using the second CAN bus, the method further includes:

In an embodiment, when the determined status of the indicator light is hard-wired driving, the message fault reminding function is turned off.

In an embodiment, when the driving state of the indicator light is message 1 driving or message 2 driving, the reminding function of the hard line fault is turned off.

In another aspect, the present invention also provides an engine comprising:

and the setting module is used for setting the driving state of the indicator lamp as message driving when the first response message fed back by the instrument is received.

In another aspect, the present invention also provides an engine comprising: the system comprises a first CAN bus, a meter, an indicator light, a memory and a processor;

the first CAN bus is connected with the instrument and used for sending a first indication message to the instrument;

the instrument is connected with the indicator light and used for driving the indicator light to be turned on according to the first indication message;

the memory stores computer-executable instructions;

the processor executes the computer-executable instructions stored in the memory, so that the processor performs the method of determining the driving state of the indicator light as described above.

In another aspect, the present invention also provides a computer-readable storage medium having stored therein computer-executable instructions for implementing the method for determining the driving state of an indicator light as described above when the computer-executable instructions are executed by a processor.

In another aspect, the present invention also provides a computer program product comprising a computer program which, when executed by a processor, implements the method for determining the driving state of an indicator light as described above.

According to the method for determining the driving state of the indicator lamp, the engine sends the first indication message to the instrument of the engine by using the first CAN bus, when the instrument successfully drives the indicator lamp indicated by the first indication message to light, the first response message is fed back to the engine, and the engine sets the driving state of the indicator lamp to be message driving based on the received first response message. In the invention, the engine sends the indication message to the instrument through the CAN bus, the instrument feeds back the first response message to the engine after the indicator lamp indicated by the drive indication message is lightened, the engine CAN determine that the instrument has received the message based on the first response message and successfully lightens the indicator lamp, and the engine sets the driving state of the indicator lamp as message driving, namely the engine determines whether the instrument receives the message and the instrument successfully drives the indicator lamp to lighten, and then sets the driving state of the indicator lamp, thereby improving the determination accuracy of the driving state of the indicator lamp.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of signal processing involved in the method for determining the driving state of an indicator light according to the present invention;

FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for determining a driving state of an indicator according to the present invention;

FIG. 3 is a flowchart illustrating a second embodiment of a method for determining a driving state of an indicator according to the present invention;

FIG. 4 is a functional block diagram of the engine of the present invention;

fig. 5 is a schematic diagram of the hardware structure of the engine of the present invention.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The invention provides a method for determining a driving state of an indicator light, which is specifically realized by a signal processing schematic diagram shown in fig. 1. In the field of engine control, the indicator lamp driving method includes: message driving and hard-line driving. The message driving means that an ECU (Electronic Control Unit, ECU for short) of the engine sends a message through a meter of the CAN longitudinal engine, where the message includes data of an indicator lamp driven by the indicator meter, that is, the message driving realizes the driving of the indicator lamp through data transmission. The hard-wired driving means that the indicator lamp is connected with the ECU through a hard wire, the ECU sends a signal to the indicator lamp through the hard wire, the signal comprises a high level and a low level, and the hard wire determines that the indicator lamp is driven through the high level and the low level.

As shown in fig. 1, a message state 1 indicates a first CAN bus, a message state 2 indicates a second CAN bus, the first CAN bus and the second CAN bus are connected to one end of a message selection switch, that is, the ECU CAN select the first CAN bus or the second CAN bus to send a message to the instrument through the message selection switch. Further, the ECU is connected to the indicator lamp by a hard wire, and the ECU may drive the indicator lamp to light based on the hard wire.

And after determining that the driving mode of the indicator light is the message state 1 or the message state 2, the ECU sends message state information to the signal source selection switch, and the signal source selection switch selects the signal source in the message state to display the driving state of the indicator light as message driving. And if the ECU determines that the state of the indicator lamp is the hard-line drive, the ECU sends information of the hard-line state to the signal source selection switch, and the signal source selection switch selects the signal source in the hard-line state to display that the driving state of the indicator lamp is the hard-line drive.

The following describes the technical solutions of the present invention and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a first embodiment of a driving state determining method of an indicator lamp according to the present invention, the driving state determining method of the indicator lamp including the steps of:

step S10, a first indication message is sent to an instrument of the engine by using a first Controller Area Network (CAN) bus, wherein when the instrument successfully drives an indicator lamp indicated by the first indication message to light, the instrument feeds back a first response message;

in the present embodiment, the execution subject is an engine. A first CAN bus is arranged in the engine and connected with an instrument of the engine. The indicator light of the meter-drivable engine lights up. When the engine needs to light the indicator lamp, the identification information of the indicator lamp is obtained, and then a message is generated through the identification information, namely the message includes the information of the indicator lamp which needs to be driven by the instrument. The identification information characterizes the unique identity of the indicator light, for example, the identification information may be the number of the indicator light.

The engine sends a message to the instrument of the transmitter by using the first CAN bus, and the message sent by the first CAN bus is defined as a first indication message. After the instrument receives the first indication message, the instrument analyzes the first indication message so as to determine the indicator lamp which needs to be driven, and then the instrument drives the indicator lamp to light. The instrument is provided with a response logic, and the response logic is as follows: after the instrument lights the indicator light, the instrument feeds back a message to the engine, and the fed back message is defined as a first response message.

In addition, the engine sends a request message to the instrument at the same time of sending the first indication message through the first CAN bus, and the request message requests the instrument to feed back information of the indicator lamp which is successfully lighted to the engine after the indicator lamp is successfully driven to light. The request message is defined as a first request message.

And step S20, when receiving the first response message fed back by the instrument, setting the driving state of the indicator lamp as message driving.

When the engine receives the first response message fed back by the instrument, the engine can determine that the instrument has successfully received the first indication message, and the instrument successfully drives the indicator lamp indicated by the first indication message to light up, and the engine can set the driving state of the indicator lamp as message driving.

In the technical scheme provided by this embodiment, the engine uses the first CAN bus to send the first indication message to the instrument of the engine, when the instrument successfully drives the indicator light indicated by the first indication message to light, the first response message is fed back to the engine, and the engine sets the driving state of the indicator light to message driving based on the received first response message. In the invention, the engine sends the indication message to the instrument through the CAN bus, the instrument feeds back the first response message to the engine after the indicator lamp indicated by the drive indication message is lightened, the engine CAN determine that the instrument has received the message based on the first response message and successfully lightens the indicator lamp, and the engine sets the driving state of the indicator lamp as message driving, namely the engine determines whether the instrument receives the message and the instrument successfully drives the indicator lamp to lighten, and then sets the driving state of the indicator lamp, thereby improving the determination accuracy of the driving state of the indicator lamp.

Referring to fig. 3, fig. 3 is a second embodiment of the method for determining the driving state of the indicator light according to the present invention, and based on the first embodiment, after step S10, the method further includes:

step S30, when the first response message fed back by the instrument is not received within the first preset time, the second indication message is sent to the instrument by using the second CAN bus;

step S40, when receiving a second response message fed back by the instrument, setting the driving state of the indicator light as a message 2 driver, where the message driver includes a message 1 driver and a message 2 driver, and the message 1 driver is set when receiving the first response message.

In this embodiment, the engine is further provided with a second CAN bus, and the engine CAN select the first CAN bus or the second CAN bus to send a message to the instrument through the message selection switch.

The first predetermined period of time is set in the engine and may be any suitable value, for example, the first predetermined period of time is 1 min. When the engine does not receive a first response message fed back by the instrument within a first preset time length, the first CAN bus is switched to a second CAN bus, and the second CAN bus is used for sending a message to the instrument. And defining the message sent by the second CAN bus as a second indication message.

After the instrument receives the second indication message, the instrument can analyze the second indication message so as to determine the indicator lamp needing to be driven, and then the instrument drives the indicator lamp to be lightened. The instrument is provided with a response logic, and the response logic is as follows: after the instrument lights the indicator lamp, the instrument feeds back a message to the engine, and the fed back message is defined as a second response message.

In addition, the engine sends a request message to the instrument at the same time of sending a second indication message through the second CAN bus, and the request message requests the instrument to feed back information of the indicator lamp which is successfully lighted to the engine after the indicator lamp is successfully driven to light. The request message is defined as a second request message.

When the engine receives a second response message fed back by the instrument, the engine can determine that the instrument has successfully received the second indication message, and the instrument successfully drives the indicator lamp indicated by the second indication message to light up, and the engine can set the driving state of the indicator lamp as message 2 driving. The message driver comprises a message 1 driver and a message 2 driver, wherein the message 1 driver is set when the engine receives a first response message, and the message 2 driver is set when the engine receives a second response message.

Further, after the engine sends a second indication message to the instrument by using a second CAN bus, whether a second response message is received within a second preset time is judged. The second preset time period may be any suitable value, for example, the second preset time period may be 2 min.

And if a second response message fed back by the instrument is received, setting the driving state of the indicator lamp as message 2 driving. And if the second response message fed back by the instrument is not received within the second preset time, detecting whether the indicator lamp is connected with the hard wire. Specifically, the engine can detect whether the hard-line open-circuit fault diagnosis is set, and if the hard-line open-circuit fault diagnosis is not set, the indication lamp is connected with the hard line; if the signal is set, the signal indicates that the indicator light is not connected with the hard wire.

When the situation that the indicator lamp is not connected with the hard wire is determined, the situation that the hard wire has a fault can be determined, the engine outputs prompt information of the condition that the indicator lamp is not connected with the hard wire and the message line has a fault, namely, the fault related to the connection of the indicator lamp and the fault related to the unsuccessful receiving of the message 1 and the message 2 are reported at the same time. The engine also sets the indicator light actuation state to a default state, which indicates that the indicator light is not illuminated. And if the indicator light is connected with the hard wire, setting the driving state of the indicator light to be in hard wire driving.

It should be noted that, when the driving state of the indicator light is hard-line driving, the engine turns off the message fault prompting function, that is, the engine is prevented from reporting the message fault prompting information. And when the driving state of the indicating lamp is the message driving 1 or the message driving 2, the engine closes the prompting function of the hard line fault, namely, the engine is prevented from reporting the prompting information of the hard line fault.

In the technical scheme provided by this embodiment, when the engine does not receive the first response message fed back by the instrument within the first preset time, the second CAN bus is used to send the second indication message to the instrument, and if the second response message fed back by the instrument is received, the driving state of the indicator lamp is set to message 2 driving, that is, the engine is provided with multiple paths of CAN buses, so that the message CAN be successfully sent to the instrument.

In an embodiment, the hard-line driver and the message driver are provided with corresponding priorities, if the priority of the message driver is higher than the priority of the hard-line driver, a first CAN bus is used to send a first indication message to the instrument, if the first response message is not received within a first preset time period, a second CAN bus is used to send a second indication message to the instrument, if the second response message is not received within a second preset time period, whether the indicator light is connected with the hard line is detected, and if the indicator light is connected with the hard line, the driving state of the indicator light is set as the hard-line driver.

If the priority of the message drive is lower than that of the hard-wire drive, the engine detects whether the indicator light is connected with the hard-wire. If the indicator light is not connected with the hard wire, a first CAN bus is used for sending a first indication message to the instrument, if the first response message is not received within the first preset time, a second CAN bus is used for sending a second indication message to the instrument, if the second response message is not received within the second preset time, prompt information that the indicator light is not connected with the hard wire and a message line fault is output, the driving state of the indicator light is set to be a default state, and the indicator light in the default state is not lightened. And if the indicator light is connected with the hard wire, setting the driving state of the indicator light to be in hard wire driving.

The present invention also provides an engine, and referring to fig. 4, the engine 400 includes:

the sending module 401 is configured to send a first indication message to an instrument of the engine by using a first Controller Area Network (CAN) bus, where the instrument feeds back a first response message when an indicator lamp indicated by the first indication message is successfully driven to light by the instrument;

the setting module 402 is configured to set a driving state of the indicator light to be message driving when receiving a first response message fed back by the instrument.