Method and system for controlling sudden deceleration and reversing intention prompt signal of vehicle

Abstract

The invention relates to the technical field of automotive electronics and vehicle safety, in particular to a vehicle sudden deceleration and backing intention prompt signal control method and system.The method is applied to a vehicle provided with a special sudden deceleration lamp and comprises the steps that sudden deceleration triggering conditions are obtained, and at least the situation that the braking force reaches a preset threshold value is included; when the condition is met, controlling the sudden-decreasing lamp to flicker at a preset frequency, and synchronously displaying the state on the instrument; the braking force is continuously monitored in the flickering process; when the force is lower than a threshold value, timing is started, and after timing reaches a first preset time length, the urgent turn-off lamp is turned off; when the vehicle stops, if a steering lamp instruction is received, the sudden reduction lamp and the steering lamp are controlled to flicker synchronously to form a reversing intention combination signal. The system comprises corresponding function modules. According to the invention, through the special light signal, the intention of rapid deceleration and reversing is clearly transmitted, and the driving safety is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics and vehicle safety technology, and in particular to a method and system for controlling vehicle rapid deceleration and reversing intention indication signals. Background Technology

[0002] In road traffic, effectively communicating a vehicle's emergency status or operational intentions to following vehicles is crucial for preventing rear-end collisions and improving traffic safety. Currently, vehicles primarily use brake lights, hazard warning lights, and emergency braking flashers on some high-end models to signal deceleration or danger to following vehicles. Brake lights illuminate during braking to indicate that the vehicle is slowing down, but they cannot distinguish between regular braking and emergency braking. Hazard lights are usually manually activated by the driver, and their usage varies across different scenarios and their meaning differs in different regions and cultures, making it difficult for following drivers to quickly and accurately determine the true intentions of the vehicle ahead. Emergency braking flashers typically only trigger in extreme situations where the vehicle is traveling at high speeds and the brake pedal is suddenly floored, failing to cover rapid deceleration scenarios at low to medium speeds. However, current technology lacks a dedicated light signal that is unrestricted by speed or braking force and has a single, clear meaning to immediately and clearly convey the specific dangerous state of "this vehicle is rapidly decelerating or has come to a sudden stop" to following vehicles when a vehicle needs to decelerate rapidly due to an emergency. This forces drivers of following vehicles to rely on a combination of vague signals such as brake light brightness and hazard lights to judge the state of the vehicle in front, resulting in a delayed reaction. This can easily lead to rear-end collisions in complex scenarios such as high speeds, traffic jams, low visibility, or cross-border driving, posing a significant safety hazard. Summary of the Invention

[0003] To overcome the above deficiencies, this invention provides a method and system for controlling vehicle emergency deceleration and reversing intention prompt signals. It aims to improve the problem that existing vehicles, when undergoing emergency deceleration or needing to express reversing intentions, suffer from unclear signal transmission and delayed response from drivers behind due to the lack of dedicated light signals with single, clear, and triggerable signals in all scenarios, which can lead to rear-end collisions. In a first aspect, the present invention provides the following technical solution: a method for controlling vehicle emergency deceleration and reversing intention indication signals, the method being applied to vehicles equipped with dedicated emergency deceleration lights at the rear, the method comprising the following steps: The emergency deceleration triggering conditions of the vehicle are obtained, and the emergency deceleration triggering conditions include at least detecting that the force of the brake pedal being pressed reaches or exceeds a preset force threshold. When the emergency deceleration triggering condition is met, the emergency deceleration light is controlled to flash at a preset flashing frequency, and an indicator graphic consistent with the flashing state of the emergency deceleration light is displayed synchronously on the in-vehicle instrument panel. During the flashing of the emergency deceleration indicator, the real-time force applied to the brake pedal is continuously monitored. When the real-time force is lower than the preset force threshold, a timer is started, and the emergency deceleration light is controlled to continue flashing. After the first preset duration is reached, the emergency deceleration light is controlled to turn off. When the vehicle is stationary, if a turn signal activation command is received, the emergency stop light and the turn signal will be controlled to flash synchronously to form a combined signal that conveys the intention to reverse to vehicles behind. Preferably, the step of obtaining the vehicle's rapid deceleration trigger condition specifically includes: The brake pedal status signal is acquired in real time and converted into a real-time force value; The real-time force value is compared with a preset force threshold. When the real-time force value reaches or exceeds the preset force threshold, it is determined that the rapid deceleration trigger condition is met. Preferably, the step of obtaining the vehicle's rapid deceleration trigger condition further includes: In response to the user's triggering operation on the emergency stop light switch, a manual trigger signal is generated; When the manual trigger signal is received, it is determined that the rapid deceleration trigger condition is met. Preferably, the step of controlling the emergency deceleration light to flash at a preset flashing frequency and synchronously displaying an indicator graphic on the in-vehicle instrument panel that matches the flashing state of the emergency deceleration light when the emergency deceleration trigger condition is met specifically includes: When the aforementioned rapid deceleration triggering condition is met, a rapid deceleration light control command is generated. According to the emergency reduction light control command, the emergency reduction light is driven to periodically flash bright and dark at a preset flashing frequency; The current actual flashing state of the emergency deceleration lamp is collected synchronously; Based on the actual flashing state, a corresponding indicator graphic control signal is generated, and the in-vehicle instrument panel displays an indicator graphic synchronized with the actual flashing state. Preferably, the step of continuously monitoring the real-time force of the brake pedal during the flashing of the emergency deceleration light specifically includes: After the emergency deceleration indicator light starts flashing, the cyclic acquisition of the brake pedal status signal is initiated. During each cycle of data acquisition, the current state signal of the brake pedal is obtained, and the current state signal is converted into the current real-time force value. The current real-time intensity value is output as the monitoring result for subsequent judgment. Preferably, the step of starting a timer and controlling the rapid deceleration light to continue flashing when the real-time force is lower than the preset force threshold, and controlling the rapid deceleration light to turn off after a first preset duration, specifically includes: Receive the current real-time force value obtained from monitoring, and compare the current real-time force value with the preset force threshold; When the comparison result indicates that the current real-time force value is lower than the preset force threshold, a timer is started to keep track. During the timer's timing, the drive on the rapid decrease lamp is maintained, causing it to continue flashing at the preset flashing frequency; The cumulative count value of the timer is acquired in real time, and the cumulative count value is compared with a first preset duration; When the comparison result indicates that the cumulative time value has reached or exceeded the first preset duration, an emergency deceleration lamp shutdown command is generated and executed to stop driving the emergency deceleration lamp and turn it off. Preferably, the step of controlling the emergency stop light and the turn signal to flash synchronously when the vehicle is stationary, to form a combined signal conveying the intention to reverse to vehicles behind, specifically includes: Monitor the vehicle's current driving status and determine whether the vehicle is stationary; When the vehicle is determined to be stationary, monitor whether a turn signal activation command has been received. When the turn signal activation command is received, the emergency stop light is controlled to enter the reversing signal working mode; In the reversing signal working mode, the current flashing state of the turn signal is collected; Based on the current flashing state of the turn signal, the emergency stop lamp is synchronously driven to flash at the same flashing frequency and flashing phase as the turn signal, so that the emergency stop lamp and the turn signal form a combined signal of synchronous flashing. Secondly, the present invention provides the following technical solution: a vehicle emergency deceleration and reversing intention indication signal control system, the system comprising: The trigger condition acquisition module is used to acquire the vehicle's emergency deceleration trigger condition, which includes at least detecting that the force of the brake pedal being pressed reaches or exceeds a preset force threshold. The signal triggering and feedback module is used to control the emergency deceleration light to flash at a preset flashing frequency when the emergency deceleration triggering condition is met, and to simultaneously display an indicator graphic on the in-vehicle instrument panel that is consistent with the flashing state of the emergency deceleration light. The status monitoring module is used to continuously monitor the real-time force of the brake pedal during the flashing of the emergency deceleration light; The delayed shutdown judgment and execution module is used to start timing when the real-time force is lower than the preset force threshold, and control the rapid deceleration light to continue flashing. After reaching the first preset time, it controls the rapid deceleration light to turn off. The reversing intention signal generation module is used to control the emergency stop light and the turn signal to flash synchronously when the vehicle is stationary and a turn signal activation command is received, so as to form a combined signal to convey the reversing intention to vehicles behind. The present invention has the following beneficial effects: 1. In this invention, by adding an independently controlled emergency deceleration light and defining its automatic or manual flashing trigger when the vehicle decelerates rapidly, a light signal is provided to the following vehicles to indicate that the vehicle is decelerating rapidly or has stopped rapidly. This avoids signal misjudgment caused by the diverse meanings of hazard lights and the ambiguous intentions of brake lights, and significantly improves the accuracy and timeliness of communication between vehicles. 2. In this invention, by setting the automatic triggering condition to the braking force reaching a preset threshold, rather than relying on vehicle speed, the emergency deceleration lights can be automatically activated in all emergency deceleration scenarios, including high speed, medium speed, low speed, and even the starting phase. This overcomes the limitation of traditional flashing lights, which are only triggered during high-speed emergency braking, and greatly expands the scope of application of active safety protection. 3. In this invention, by controlling the emergency stop light to flash synchronously with the turn signal when the vehicle is stopped, a unique combined signal is formed, which clearly and intuitively conveys to the vehicles behind that the vehicle is about to reverse in that direction. This effectively solves the safety problem that when vehicles behind do not understand the intention of the vehicle in front or misjudge when parking, the vehicles behind may not yield or misjudge the situation. Attached Figure Description Figure 1 This is a flowchart illustrating the vehicle rapid deceleration and reversing intention indication signal control method proposed in this invention. Figure 2 This is a schematic diagram of the architecture of the vehicle rapid deceleration and reversing intention indication signal control system proposed in this invention. Detailed Implementation The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1: In a first embodiment of the present invention, the present invention provides a method for controlling vehicle emergency deceleration and reversing intention indication signals. This method is applied to vehicles equipped with dedicated emergency deceleration lights at the rear, such as... Figure 1 As shown, it includes the following steps: Obtain the vehicle's emergency deceleration trigger conditions, which include at least detecting that the force of the brake pedal being pressed reaches or exceeds a preset force threshold. Furthermore, the specific steps for obtaining the vehicle's rapid deceleration trigger conditions include: The brake pedal status signal is acquired in real time and converted into a real-time force value; Compare the real-time force value with the preset force threshold; When the real-time force value reaches or exceeds the preset force threshold, it is determined that the rapid deceleration trigger condition is met. Furthermore, the steps for obtaining the vehicle's rapid deceleration trigger conditions also include: In response to the user's triggering operation on the emergency stop light switch, a manual trigger signal is generated; When a manual trigger signal is received, it is determined that the rapid deceleration trigger condition is met. Specifically, when the vehicle is in motion or preparing to move, the system continuously collects pressure or displacement signals from the brake pedal in real time via force or displacement sensors mounted on the brake pedal assembly. The control unit, such as the body controller, receives these signals and, according to a preset calibration relationship, converts the received pressure or displacement signals into corresponding real-time force values. These real-time force values ​​represent the force applied by the driver when pressing the brake pedal as a percentage or in a specific physical unit. The control unit internally stores a preset force threshold, which is calibrated and set, for example, to 60% of the force corresponding to the full travel of the brake pedal. The control unit cyclically compares the calculated real-time force value with the preset force threshold. When the comparison result indicates that the real-time force value reaches or exceeds the preset force threshold, the control unit determines that the emergency deceleration trigger condition is met, generates a corresponding trigger signal, and enters the subsequent emergency deceleration light control process. Inside the vehicle interior, in easily accessible locations for the driver, such as on the steering wheel spokes or the center console area, there is a dedicated manual switch for the emergency deceleration lights. This switch can be a physical button, a touch-sensitive sliding area, or a control button integrated into the multi-function steering wheel. When the driver senses the need for rapid deceleration or to issue an emergency warning to vehicles behind, they can actively operate the switch. Once triggered, the switch generates a clear manual trigger signal and sends it to the control unit. Upon receiving this signal, the control unit determines that the emergency deceleration triggering conditions are met, generates a trigger flag signal, and initiates the subsequent emergency deceleration light control process. Furthermore, as a preferred implementation, the manual triggering path can also integrate voice control functionality. The in-vehicle microphone captures the driver's voice; when the voice recognition module identifies a voice command matching a preset keyword, such as "rapid deceleration," it generates a manual trigger signal and sends it to the control unit, thus achieving voice-controlled triggering. The two triggering paths described above are logically related by an "OR" condition. If either path is met, the system determines that the emergency deceleration triggering condition has been met and then initiates the flashing control of the emergency deceleration lights. The automatic triggering path ensures that the signal is automatically issued in emergency situations where the driver cannot react in time; the manual triggering path gives the driver the ability to actively warn the driver. Together, they constitute a reliable and flexible emergency deceleration signal triggering mechanism. When the emergency deceleration trigger condition is met, the emergency deceleration lights are controlled to flash at a preset flashing frequency, and an indicator graphic consistent with the flashing state of the emergency deceleration lights is displayed synchronously on the in-vehicle instrument panel. Furthermore, when the emergency deceleration triggering conditions are met, the steps of controlling the emergency deceleration lights to flash at a preset flashing frequency and simultaneously displaying an indicator graphic on the in-vehicle instrument panel that matches the flashing state of the emergency deceleration lights specifically include: When the emergency deceleration trigger condition is met, an emergency deceleration light control command is generated. According to the emergency stop light control command, drive the emergency stop light to periodically flash bright and dark at a preset flashing frequency; Synchronously collect the current actual flashing status of the emergency deceleration lights; Based on the actual flashing state, a corresponding indicator graphic control signal is generated, and the in-vehicle instrument display is driven to display an indicator graphic synchronized with the actual flashing state. Specifically, when the control unit, such as the body controller, determines that the emergency deceleration trigger condition is met, it executes control of the emergency deceleration lights and synchronizes their status display. The control unit first generates an emergency deceleration light control command. This command includes an enable signal and a preset flashing frequency parameter. The preset flashing frequency is, for example, 2 Hz, or it can be set to the same frequency as the vehicle's original hazard warning lights. The control unit sends this emergency deceleration light control command to the drive circuit. According to the frequency parameter in the command, the drive circuit outputs a periodic current signal to drive the dedicated emergency deceleration light bulb or LED light group installed at the rear of the vehicle, causing it to flash regularly between bright and dark according to the preset flashing frequency, thus completing the periodic bright and dark flashing. To achieve synchronized feedback of the vehicle's status, the system incorporates a status acquisition loop. This loop can monitor the voltage or current signal at the output of the drive circuit, or it can detect the actual illumination of the emergency stop lights using an independent photosensitive sensor. The control unit uses this loop to acquire the actual flashing state of the emergency stop lights outside the vehicle in real time, i.e., the timing of the lights turning on and off. Based on the acquired flashing state, the control unit synchronously generates an indicator graphic control signal. This signal is sent to the vehicle's instrument cluster controller. Upon receiving this signal, the instrument cluster controller activates the display screen or dedicated indicator light on the instrument panel to display an indicator graphic that is completely synchronized with the actual flashing state of the emergency stop lights outside the vehicle. This indicator graphic is preferably a red rectangle, and its lighting and extinguishing rhythm matches the brightness changes of the emergency stop lights outside the vehicle. In this way, the driver can directly confirm on the instrument cluster whether the emergency stop lights are flashing normally as required without looking back at the rear of the vehicle, achieving closed-loop verification of external signal transmission and internal status feedback. During the flashing of the emergency stop light, continuously monitor the real-time pressure on the brake pedal. Furthermore, the steps for continuously monitoring the real-time force on the brake pedal during the flashing of the emergency stop light specifically include: After the emergency stop light starts flashing, the cyclic acquisition of the brake pedal status signal is initiated. In each cycle of data acquisition, the current state signal of the brake pedal is obtained and converted into the current real-time force value; The current real-time intensity value is output as the monitoring result for subsequent judgment. Specifically, after the emergency stop lights are activated and begin flashing at a preset frequency, the system does not cease monitoring the brake status. Instead, it immediately initiates a parallel, cyclical monitoring task targeting the brake pedal status signal. Specifically, the control unit initializes and starts a high-priority background cyclical acquisition process the moment the emergency stop lights begin flashing. This process executes periodically at fixed time intervals, such as every 10 milliseconds or every 50 milliseconds. During each cyclic acquisition, the control unit acquires the brake pedal's current status signal via a force sensor or displacement sensor on the brake pedal. This signal is a real-time physical quantity characterizing the degree to which the pedal is depressed. The control unit immediately converts the acquired current status signal into a current real-time force value based on a preset conversion algorithm or lookup table method. This current real-time force value uses the same measurement method as the force value used when the emergency stop lights are activated, for example, a percentage of the pedal travel. After each cycle of data acquisition and conversion, the control unit outputs the current real-time force value as the latest monitoring result and stores it in a designated register or variable. This monitoring result is specifically used in subsequent steps to determine whether the delayed shutdown condition has been met. This cyclical monitoring process continues uninterrupted during the flashing of the emergency hazard lights until the lights are turned off. In this way, the system can track changes in the driver's braking force in real time, providing accurate data for determining whether the emergency has been resolved. When the real-time force is lower than the preset force threshold, the timer starts and the emergency deceleration light continues to flash. After the first preset duration is reached, the emergency deceleration light is turned off. Furthermore, when the real-time force is lower than a preset force threshold, a timer is started, and the emergency deceleration light continues to flash. After reaching the first preset duration, the emergency deceleration light is turned off. The specific steps include: Receive the current real-time force value obtained from monitoring, and compare the current real-time force value with the preset force threshold; When the comparison result shows that the current real-time force value is lower than the preset force threshold, the timer is started to keep track. During the timer's timing, the drive on the rapid decrease light is maintained, causing it to continue flashing at a preset flashing frequency; The cumulative countdown value of the timer is acquired in real time and compared with the first preset duration. When the comparison result shows that the cumulative time value reaches or exceeds the first preset duration, an emergency deceleration lamp off command is generated and executed to stop driving the emergency deceleration lamp and turn it off. Specifically, during continuous monitoring, the system compares the current real-time force value acquired each time with a preset force threshold that serves as the trigger condition. This comparison is performed in real time by the control unit. When a comparison shows that the current real-time force value is lower than the preset force threshold, the control unit determines that the emergency braking phase of the rapid deceleration may have ended or weakened. At this point, the control unit does not immediately turn off the emergency braking lights, but instead starts a timer. This timer can be a software counter or a hardware timer. Throughout the timer's startup and timing period, the control unit continues to output the original control command to the emergency stop light drive circuit, meaning the emergency stop light continues to flash at the original preset flashing frequency. The emergency stop light remains operational during this phase, continuously emitting a warning signal. Simultaneously, the control unit reads the cumulative timer value in real time. The control unit compares the cumulative timer value with a pre-set first preset duration. This first preset duration is calibrated and determined, for example, set to 4 seconds. The control unit continuously compares the accumulated time value with a first preset duration. When the comparison shows that the accumulated time value has reached or exceeded the first preset duration, the control unit generates an emergency braking light off command and sends this command to the drive circuit. Upon receiving the off command, the drive circuit stops outputting drive current, and the emergency braking light immediately turns off, ending its flashing state. Through this delayed-off mechanism, the emergency braking light can continue to provide a warning for a period of time after the emergency braking force weakens, effectively avoiding the risk of misjudgment by following vehicles due to premature signal disappearance, and ensuring the integrity and effectiveness of the warning signal. When the vehicle is stationary, if a turn signal activation command is received, the emergency stop lights and turn signals will be controlled to flash synchronously to form a combined signal that conveys the intention to reverse to vehicles behind. Furthermore, when the vehicle is stationary, if a turn signal activation command is received, the steps of controlling the emergency stop lights and turn signals to flash synchronously to form a combined signal conveying the intention to reverse to vehicles behind include: Monitor the vehicle's current driving status and determine whether the vehicle is stationary; When the vehicle is determined to be stationary, monitor whether a turn signal activation command has been received. When a turn signal activation command is received, the emergency stop lights are controlled to enter the reversing signal working mode. In reversing signal working mode, the current flashing status of the turn signals is collected; Based on the current flashing state of the turn signals, the emergency stop lamps are synchronously driven to flash at the same flashing frequency and phase as the turn signals, so that the emergency stop lamps and turn signals form a combined signal of synchronous flashing. Specifically, the system independently monitors the vehicle's driving status. The control unit acquires signals from the vehicle speed sensor. When it determines that the vehicle speed is consistently zero and the vehicle is not in a driving gear, it confirms that the vehicle is currently stationary. While confirming the vehicle is stationary, the control unit simultaneously monitors command signals from the turn signal control circuit or the turn signal switch. When a turn signal activation command is detected—that is, the driver moves the turn signal control lever to activate the left or right turn signal—the system determines that the reversing signal trigger condition has been met. At this point, the control unit switches the emergency stop light control logic to the reversing signal operating mode. In this mode, the control priority and logic of the emergency stop light are independent of the aforementioned emergency deceleration trigger mode. In the reversing signal operating mode, the system continuously monitors the current flashing state of the target turn signal. Specifically, the control unit obtains the precise timing of its illumination and extinguishing—that is, the flashing frequency and flashing phase—by monitoring the voltage or current signal of the corresponding side turn signal drive circuit. Based on the acquired turn signal flashing state, the control unit generates an emergency stop light drive command that is completely synchronized with it. This command ensures that the emergency stop light operates with the exact same flashing frequency and flashing phase as the target turn signal, meaning both illuminate and extinguish simultaneously. Through the aforementioned control, the turn signal on the same side of the vehicle's rear end and the emergency stop light in the center form a flashing light combination with completely synchronized frequency and phase. This unique combination signal clearly conveys the single and clear intention that "this vehicle is about to reverse in this direction" to vehicles behind, effectively solving the problem of ambiguous intention caused by relying solely on flashing turn signals or hazard lights, and improving active safety before reversing. Example 2: When a vehicle needs to decelerate suddenly due to an emergency, there is a lack of a dedicated light signal that is not limited by speed or braking force and has a single, clear meaning to immediately and clearly convey the specific dangerous state of "this vehicle is decelerating suddenly or stopping suddenly" to following vehicles. This forces drivers of following vehicles to rely on a combination of vague signals such as brake light brightness and hazard lights to judge the state of the vehicle in front, resulting in a delayed reaction and easily causing rear-end collisions in complex scenarios such as high speeds, traffic jams, low visibility, or cross-country driving, posing a significant safety hazard. To solve the above problems, this invention provides a vehicle emergency deceleration and reversing intention indication signal control system, the structure of which is as follows: Figure 2 As shown. The specific implementation process of this system is as follows: The trigger condition acquisition module is used to acquire the vehicle's emergency deceleration trigger conditions. The emergency deceleration trigger conditions include at least detecting that the force of the brake pedal being pressed reaches or exceeds a preset force threshold. The signal triggering and feedback module is used to control the emergency deceleration lights to flash at a preset flashing frequency when the emergency deceleration triggering conditions are met, and to simultaneously display an indicator graphic on the in-vehicle instrument panel that is consistent with the flashing state of the emergency deceleration lights. The status monitoring module is used to continuously monitor the real-time force of the brake pedal during the flashing of the emergency deceleration light; The delayed shutdown judgment and execution module is used to start timing when the real-time force is lower than the preset force threshold, and control the emergency deceleration light to continue flashing. After the first preset time is reached, the emergency deceleration light is controlled to turn off. The reversing intention signal generation module is used to control the emergency stop light and the turn signal to flash synchronously when the vehicle is stationary and a turn signal activation command is received, so as to form a combined signal to convey the reversing intention to vehicles behind. Specifically, the trigger condition acquisition module is connected to the brake pedal sensor and the manual switch for the emergency deceleration light. This module acquires the pressure or displacement signal of the brake pedal from the brake pedal sensor in real time or periodically and calculates the real-time force value. A preset force threshold is pre-stored within this module. The module compares the calculated real-time force value with the preset force threshold; when the real-time force value reaches or exceeds the preset force threshold, the module generates an automatic trigger signal. Simultaneously, this module also monitors the status of the manual switch for the emergency deceleration light or the output of the voice recognition module. When a valid manual trigger operation or voice command is detected, a manual trigger signal is generated. Both the automatic and manual trigger signals are valid representations of the emergency deceleration trigger condition, and this module outputs either trigger signal to the signal triggering and feedback module. The signal triggering and feedback module is connected to the emergency stop lamp drive circuit and the in-vehicle instrument controller. This module receives a trigger signal from the trigger condition acquisition module. When a valid trigger signal is received, the module generates an emergency stop lamp control command containing preset flashing frequency parameters and sends this command to the emergency stop lamp drive circuit, causing the emergency stop lamps at the rear of the vehicle to begin flashing at the preset frequency. Simultaneously, the module acquires the actual output state of the emergency stop lamp drive circuit or the actual illumination state of the emergency stop lamps through a status feedback circuit to obtain the actual flashing state of the emergency stop lamps. Based on this actual flashing state, the module generates a synchronized display control signal and sends it to the in-vehicle instrument controller, driving the instrument display screen to show an indicator graphic synchronized with the flashing state of the emergency stop lamps outside the vehicle. After the emergency stop lamps begin flashing, this module sends a start monitoring command to the status monitoring module. The status monitoring module is connected to the brake pedal sensor. Upon receiving a start monitoring command from the signal triggering and feedback module, this module begins operating in a cyclic acquisition manner. It continuously acquires the current status signal of the brake pedal from the sensor and converts it into a current real-time force value. This real-time force value is then continuously output as the monitoring result to the delay-off judgment and execution module. The delayed shutdown judgment and execution module receives the current real-time intensity value from the status monitoring module. This module also stores a preset intensity threshold. It compares the received current real-time intensity value with the preset threshold. When the comparison result shows the current real-time intensity value is lower than the preset threshold, the module starts its internal timer and sends a sustain command to the signal triggering and feedback module, keeping the emergency stop light flashing. Simultaneously, the module acquires the cumulative count of the timer and compares it with a first preset duration stored internally. When the cumulative count reaches or exceeds the first preset duration, the module generates an emergency stop light shutdown command and sends it to the signal triggering and feedback module. Based on this shutdown command, the signal triggering and feedback module stops outputting control commands to the emergency stop light drive circuit, and the emergency stop light shuts off. The reversing intention signal generation module is connected to the vehicle speed sensor, turn signal switch, and turn signal drive circuit. This module continuously monitors the vehicle speed signal to determine if the vehicle is stationary. When the vehicle is determined to be stationary, the module monitors the turn signal switch for commands. When a valid turn signal activation command is detected, the module enters an active state and sends a mode switching command to the signal triggering and feedback module, transferring control of the emergency stop lamp to this module. This module then acquires signals from the target turn signal drive circuit to obtain the current flashing state of the turn signal. Based on the acquired turn signal flashing state, this module generates an emergency stop lamp drive command that is perfectly synchronized with its frequency and phase, and sends this command to the signal triggering and feedback module. The signal triggering and feedback module drives the emergency stop lamp according to this command, causing it to flash synchronously with the turn signal, forming a combined signal. When the turn signal is turned off or the vehicle resumes movement, this module exits the active state. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling vehicle sudden deceleration and reversing intention indication signals, characterized in that, The method is applied to vehicles equipped with dedicated emergency stop lights at the rear, and includes the following steps: The emergency deceleration triggering conditions of the vehicle are obtained, and the emergency deceleration triggering conditions include at least detecting that the force of the brake pedal being pressed reaches or exceeds a preset force threshold. When the emergency deceleration triggering condition is met, the emergency deceleration light is controlled to flash at a preset flashing frequency, and an indicator graphic consistent with the flashing state of the emergency deceleration light is displayed synchronously on the in-vehicle instrument panel. During the flashing of the emergency deceleration indicator, the real-time force applied to the brake pedal is continuously monitored. When the real-time force is lower than the preset force threshold, a timer is started, and the emergency deceleration light is controlled to continue flashing. After the first preset duration is reached, the emergency deceleration light is controlled to turn off. When the vehicle is stationary, if a turn signal activation command is received, the emergency stop light and the turn signal will be controlled to flash synchronously to form a combined signal that conveys the intention to reverse to vehicles behind.

2. The vehicle emergency deceleration and reversing intention indication signal control method according to claim 1, characterized in that, The steps for obtaining the vehicle's rapid deceleration trigger conditions specifically include: The brake pedal status signal is acquired in real time and converted into a real-time force value; The real-time force value is compared with a preset force threshold. When the real-time force value reaches or exceeds the preset force threshold, it is determined that the rapid deceleration trigger condition is met.

3. The vehicle rapid deceleration and reversing intention indication signal control method according to claim 1, characterized in that, The step of obtaining the vehicle's rapid deceleration trigger condition further includes: In response to the user's triggering operation on the emergency stop light switch, a manual trigger signal is generated; When the manual trigger signal is received, it is determined that the rapid deceleration trigger condition is met.

4. The vehicle emergency deceleration and reversing intention indication signal control method according to claim 1, characterized in that, The step of controlling the emergency deceleration light to flash at a preset flashing frequency when the emergency deceleration trigger condition is met, and synchronously displaying an indicator graphic on the in-vehicle instrument panel that matches the flashing state of the emergency deceleration light, specifically includes: When the aforementioned rapid deceleration triggering condition is met, a rapid deceleration light control command is generated. According to the emergency reduction light control command, the emergency reduction light is driven to periodically flash bright and dark at a preset flashing frequency; The current actual flashing state of the emergency deceleration lamp is collected synchronously; Based on the actual flashing state, a corresponding indicator graphic control signal is generated, and the in-vehicle instrument panel displays an indicator graphic synchronized with the actual flashing state.

5. The vehicle emergency deceleration and reversing intention indication signal control method according to claim 1, characterized in that, The step of continuously monitoring the real-time force of the brake pedal during the flashing of the emergency deceleration light specifically includes: After the emergency deceleration indicator light starts flashing, the cyclic acquisition of the brake pedal status signal is initiated. During each cycle of data acquisition, the current state signal of the brake pedal is obtained, and the current state signal is converted into the current real-time force value. The current real-time intensity value is output as the monitoring result for subsequent judgment.

6. The vehicle emergency deceleration and reversing intention indication signal control method according to claim 1, characterized in that, The step of starting a timer when the real-time force is lower than the preset force threshold, controlling the emergency deceleration light to continue flashing, and controlling the emergency deceleration light to turn off after a first preset duration specifically includes: Receive the current real-time force value obtained from monitoring, and compare the current real-time force value with the preset force threshold; When the comparison result indicates that the current real-time force value is lower than the preset force threshold, a timer is started to keep track. During the timer's timing, the drive on the rapid decrease lamp is maintained, causing it to continue flashing at the preset flashing frequency; The cumulative count value of the timer is acquired in real time, and the cumulative count value is compared with a first preset duration; When the comparison result indicates that the cumulative time value has reached or exceeded the first preset duration, an emergency deceleration lamp shutdown command is generated and executed to stop driving the emergency deceleration lamp and turn it off.

7. The vehicle emergency deceleration and reversing intention indication signal control method according to claim 1, characterized in that, The step of controlling the emergency stop light and the turn signal to flash synchronously when the vehicle is stationary, in order to form a combined signal to convey the intention to reverse to vehicles behind, specifically includes: Monitor the vehicle's current driving status and determine whether the vehicle is stationary; When the vehicle is determined to be stationary, monitor whether a turn signal activation command has been received. When the turn signal activation command is received, the emergency stop light is controlled to enter the reversing signal working mode; In the reversing signal working mode, the current flashing state of the turn signal is collected; Based on the current flashing state of the turn signal, the emergency stop lamp is synchronously driven to flash at the same flashing frequency and flashing phase as the turn signal, so that the emergency stop lamp and the turn signal form a combined signal of synchronous flashing.

8. A vehicle emergency deceleration and reversing intention indication signal control system, characterized in that, The system is used in the vehicle emergency deceleration and reversing intention indication signal control method according to any one of claims 1-7, the system comprising: The trigger condition acquisition module is used to acquire the vehicle's emergency deceleration trigger condition, which includes at least detecting that the force of the brake pedal being pressed reaches or exceeds a preset force threshold. The signal triggering and feedback module is used to control the emergency deceleration light to flash at a preset flashing frequency when the emergency deceleration triggering condition is met, and to simultaneously display an indicator graphic on the in-vehicle instrument panel that is consistent with the flashing state of the emergency deceleration light. The status monitoring module is used to continuously monitor the real-time force of the brake pedal during the flashing of the emergency deceleration light; The delayed shutdown judgment and execution module is used to start timing when the real-time force is lower than the preset force threshold, and control the rapid deceleration light to continue flashing. After reaching the first preset time, it controls the rapid deceleration light to turn off. The reversing intention signal generation module is used to control the emergency stop light and the turn signal to flash synchronously when the vehicle is stationary and a turn signal activation command is received, so as to form a combined signal to convey the reversing intention to vehicles behind.

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