Method for pausing low-speed warning sound of electric vehicle and vehicle

Abstract

The present invention discloses a method for pausing a low-speed warning sound of an electric vehicle and an electric vehicle, the method comprising: detecting the state of the whole vehicle to determine whether the warning sound system is in the on-off enabling state; when the warning sound system is in the on-off enabling state, detecting the driver's intention signal recorded based on the vehicle switch, and switching the on and off state of the warning sound system after detecting the driver's intention signal. The advantages of the present invention are: pausing the low-speed warning sound by means of vehicle logic control without increasing hardware costs, improving user experience, and facilitating users to close the warning sound as needed without increasing any hardware costs; only the software corresponding to the method needs to be integrated into the vehicle.

Description

Technical Field

[0001] The invention relates to the field of electric vehicle electrical control, and in particular to a method for pausing a low-speed prompt sound of an electric vehicle and an electric vehicle. Background Art

[0002] Electric cars are very quiet when driving. For safety reasons, they are equipped with a car warning sound system, which is used to emit warning sounds to effectively convey information to other road users. It can only be used when there are no other road users within a short distance and the surrounding environment obviously does not need the warning sound, allowing customers to temporarily turn it off. The current mainstream method is to equip the car with an independent warning sound system pause / start hardware switch; this method has a high hardware cost. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for pausing the low-speed warning sound of an electric vehicle and an electric vehicle, so as to realize the closing and opening of the low-speed warning sound without requiring hardware costs.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a method for pausing the low-speed warning sound of an electric vehicle, comprising: detecting the state of the whole vehicle to determine whether the warning sound system is in the on-off enabling state;

[0005] When the prompt sound system is in the on / off enabling state, the driver's intention signal recorded based on the vehicle switch is detected, and the prompt sound system is switched on or off when the driver's intention signal is detected.

[0006] The vehicle's ignition status, gear status, and brake pedal status are detected to determine whether the prompt sound system is enabled or disabled.

[0007] The vehicle controller is used to determine whether the current ignition state is in the READY state and send a signal to the CAN bus.

[0008] The brake pedal signal is collected by the vehicle controller and sent to the CAN bus.

[0009] The gear shifter is used to collect and judge the gear position signal and send it to the CAN bus.

[0010] The car prompt sound system obtains the READY status, brake pedal status, and gear position information from the CAN bus to determine whether the prompt sound system on and off enable status is met at this time. When the entire vehicle is in the READY status, the vehicle is in N gear, and the brake pedal is pressed, it is determined that the prompt sound system on and off enable status is met.

[0011] The driver's intention is detected when the warning sound system is in the on / off enable state. The driver's intention is obtained based on the ultrasonic light signal. When the driver's intention to switch the warning sound system on or off is obtained based on the overtaking light signal, the warning sound system switches its own on / off state.

[0012] The body controller is used to send the ultrasonic light signal to the CAN bus, and the warning sound system obtains the ultrasonic light signal through the CAN bus. If multiple overtaking light signals are received continuously in a short period of time, it is judged that the driver has the intention to switch on and off at this time, and the warning sound system switches its own on and off state.

[0013] The warning sound system feeds back the current status value to the instrument after switching its own on / off status. The instrument reminds the user of the on / off status of the low-speed warning sound system through any method such as text, indicator light or voice.

[0014] The chime system is on by default and remains on by default each time the vehicle is started.

[0015] A car adopts the low-speed prompt sound pause method to control the on-off switching of a prompt sound system.

[0016] The advantages of the present invention are: the low-speed warning sound can be paused by vehicle logic control without increasing hardware costs, which improves user experience and facilitates users to turn it off as needed without increasing any hardware costs; only the software corresponding to the method needs to be integrated into the vehicle. The overtaking lights and vehicle status are used to control the on and off, and the control on and off avoids affecting the normal overtaking lights function and does not interfere with the normal use of the vehicle; no additional physical switches or large vehicle screens are required, and it is suitable for many low-configuration vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents expressed in the drawings of the present specification and the marks in the drawings:

[0018] Figure 1 A schematic diagram of the interaction of signals involved in the pause method of the present invention;

[0019] Figure 2 Flow chart of the suspension method of the present invention. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0021] The present invention mainly realizes the shutdown control of the low-speed warning sound system of the car, and realizes this purpose without increasing the hardware cost. The present application realizes this function through the vehicle state and the switch of the multiplexed vehicle. The specific scheme is as follows:

[0022] like Figure 1 , 2 As shown, a method for pausing a low-speed warning sound of an electric vehicle of the present application includes: detecting the enabling state of the vehicle and the intention of the driver, wherein:

[0023] Enabled state: Detect the vehicle status to determine whether it meets the enabled state of the prompt sound system. In the enabled state, the prompt sound system can be turned on and off. Otherwise, the vehicle cannot be turned on and off, and the on and off states cannot be switched;

[0024] Driver intention: The driver's intention is input through the vehicle switch;

[0025] Pause control: When the prompt sound system is in the enabled state of on and off, the driver's intention signal recorded based on the vehicle switch is detected. When the driver's intention signal is detected, the prompt sound system is switched on and off. That is to say, after detecting the driver's switching intention, the prompt sound system switches the on and off state to achieve on and off control of the prompt sound system.

[0026] The enabling state of the present application is determined based on the existing state signal of the vehicle, specifically including: detecting the ignition state, gear state, and brake pedal state of the vehicle to determine whether the enabling state of the prompt sound system is turned on and off.

[0027] like Figure 1 As shown, the vehicle controller is used to determine whether the current ignition state is in the READY state, and the signal is sent to the CAN bus. The brake pedal signal is collected by the vehicle controller and sent to the CAN bus. The shifter is used to collect and determine the gear position signal and send it to the CAN bus; the body controller is used to send the ultrasonic light signal to the CAN bus;

[0028] The low-speed warning sound system of the car reads the corresponding ignition status, gear status, and brake pedal status through the CAN bus to determine whether the warning sound system is on or off. The car warning sound system obtains the READY status, brake pedal status, and gear position information from the CAN bus to determine whether the warning sound system is on or off. When the vehicle is in the READY state, the vehicle is in N gear, and the brake pedal is pressed, it is determined that the warning sound system is on or off. The purpose of setting the enable state in this application is to prevent the driver from switching intentions under any circumstances, otherwise it will interfere with the normal use of the vehicle's functions. Therefore, this application is set in N gear, braking, and READY state. At this time, general vehicles will not use overtaking lights, that is, it will not interfere with the normal use of overtaking lights.

[0029] The driver's intention is detected when the prompt sound system is in the on / off enable state. The driver's intention is obtained based on the ultrasonic light signal. When the driver's prompt sound system on / off switching intention is obtained based on the overtaking light signal, the prompt sound system switches its own on / off state. The ultrasonic light signal is sent to the CAN bus by the body controller. The prompt sound system obtains the ultrasonic light signal through the CAN bus. If multiple overtaking light signals are received continuously in a short period of time, it is determined that the driver has the intention to switch on / off at this time, and the prompt sound system switches its own on / off state.

[0030] The warning sound system feeds back the current status value to the instrument after switching its own on and off status. The instrument reminds the user of the on and off status of the low-speed warning sound system through any method such as text, indicator light or voice, so that the driver can be reminded in time when the low-speed reminder function is turned on or off.

[0031] In this application, the warning sound system is turned on by default and is in the default on state each time the vehicle is started. The low-speed warning sound is turned on by default to ensure safe driving at low speeds. The driver can be allowed to turn it off in some special circumstances. At the same time, turning it on and off does not add new hardware, saving hardware costs.

[0032] The present application also provides a car, which adopts the low-speed prompt sound pause method of the present application to perform on-off switching control of the prompt sound system.

[0033] like Figure 2 As shown in the figure, when the vehicle is in the ready state and in the N gear and the brake pedal is pressed, the enabling conditions are met. At this time, the prompt sound system is turned on and off. When the overtaking light signal is activated twice in a row within 3 seconds, it is judged that the driver has the intention to switch the prompt sound function on and off. At this time, the low-speed reminder is generally in the on state, so it is switched to the off state, thereby completing the off state. When the vehicle is powered on again, the vehicle feedback default state is the low-speed reminder function on state, thereby ensuring the reliable operation of the low-speed reminder function. Among them, the overtaking light refers to the high and low beam alternating light, that is, the high and low beam lights are turned on and off alternately. When the high and low beam lights are turned on and off alternately in a short period of time, it is judged that the overtaking light is activated at this time. At this time, the low-speed reminder function is switched on and off according to the actual situation.

[0034] The present application provides a method for realizing the function of turning off and on the prompt sound by multiplexing the overtaking lights and performing special operations without adding a hardware switch or equipping a large vehicle screen.

[0035] In order to achieve the above object, the method of the present invention specifically comprises the following steps:

[0036] 1. The switch function of the car warning sound system is related to the vehicle status, overtaking light status, brake pedal status, gear status, etc.;

[0037] 2. The car warning sound system obtains the overtaking light status, brake pedal status, gear status, and driving status through the CAN bus;

[0038] 3. The car reminder sound system determines whether it is currently in a state that can be turned off and whether there is an effective execution of the turning-off action;

[0039] 4. When the vehicle is in a state where the prompt sound can be turned off and the turning-off action is effective, the prompt sound turning-off function is executed immediately, and the user is prompted through the instrument that the prompt sound has been turned off.

[0040] like Figure 1 This is an example application system diagram provided by an embodiment of the present invention, which includes a passing light switch, a brake switch, a body controller, a shifter, a vehicle controller, a car prompt sound system, an instrument, and a CAN bus:

[0041] exist Figure 1 Based on this, a control method is provided:

[0042] The vehicle controller determines whether it is currently in the READY state and sends a signal to the CAN bus;

[0043] The vehicle controller status sends the brake pedal signal to the CAN bus;

[0044] The shifter determines and sends the gear position signal to the CAN bus;

[0045] The body controller sends the overtaking light status to the CAN bus;

[0046] The car warning sound system obtains the READY status, brake pedal status, gear position, overtaking light status, etc. from the CAN bus;

[0047] The car reminder sound system determines whether the reminder sound is currently in a state where it can be turned off or on based on the information obtained. Conditions 1-3 are all met:

[0048] 1. The vehicle is in READY state; and

[0049] 2. The vehicle is in non-drive gear; and

[0050] 3. The brake pedal is in the depressed state;

[0051] Whether the car warning sound system closing or opening action is effective: receiving 2 consecutive overtaking light openings within 3s.

[0052] It should be noted that the closing or opening function can only be executed when the vehicle is in the openable / closed state and a valid action is received;

[0053] If the car's reminder sound system is currently on, turn off the reminder sound and feed back the current status to the instrument;

[0054] If the car's reminder sound system is currently off, turn on the reminder sound and feed back the current status to the instrument;

[0055] The instrument panel will prompt the user that the prompt sound function is turned on / off by text prompts or indicator lights according to the on / off status of the prompt sound function fed back by the car prompt sound system.

[0056] It should be noted that if the reminder sound function is turned off, it should be turned on again the next time the vehicle is restarted.

[0057] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A method for pausing a low-speed warning sound of an electric vehicle, characterized in that: include: Detect the vehicle status to determine whether it meets the enable state of the prompt sound system. In the enable state, the prompt sound system can be turned on and off. Otherwise, the vehicle cannot be turned on and off, and the on and off states cannot be switched; When the prompt sound system is in the on / off enabling state, detecting the driver's intention signal recorded based on the vehicle switch, and switching the prompt sound system on / off when the driver's intention signal is detected; Detect the vehicle's ignition status, gear status, and brake pedal status to determine whether the prompt sound system is enabled or disabled; The vehicle controller is used to determine whether the current ignition state is in the READY state, and the signal is sent to the CAN bus; The brake pedal signal is collected through the vehicle controller and sent to the CAN bus; The gear shifter is used to collect and judge the gear position signal and send it to the CAN bus; The car prompt sound system obtains the READY state, brake pedal state, and gear position information from the CAN bus to determine whether the prompt sound system is in the on / off state. When the vehicle is in the READY state, the gearbox is in the N gear, and the brake pedal is pressed, it is determined that the prompt sound system is in the on / off state. Detecting the driver's intention when the prompt sound system is in the on / off enabling state, and obtaining the driver's intention based on the overtaking light signal; The body controller is used to send the overtaking light signal to the CAN bus, and the warning sound system obtains the overtaking light signal through the CAN bus. If multiple overtaking light signals are received continuously in a short period of time, it is judged that the driver has the intention to switch on and off at this time. At this time, the warning sound system switches its own on and off state and switches it to the off state.

2. A method for pausing a low-speed warning sound of an electric vehicle as claimed in claim 1, characterized in that: The warning sound system feeds back the current status value to the instrument after switching its own on / off status. The instrument reminds the user of the on / off status of the low-speed warning sound system through text, indicator lights or voice.

3. A car, characterized in that: The automobile adopts the low-speed warning sound pause method as described in claim 1 or 2 to control the on and off switching of the warning sound system.

Images