Rear-row passenger getting-off early warning and locking system and method

Abstract

The invention relates to a back-row passenger getting-off early warning and locking system and method. The system comprises an angle radar, an angle radar controller, a sound box, a mechanical lock sensor, a door lock controller, a seat sensor and a whole vehicle controller. The angle radar detects the speed and the distance of a vehicle running from the rear side and sends data to the angle radar controller for processing and then transmits a signal to the vehicle control unit, and the vehicle control unit sends a control instruction to a loudspeaker of the sound box when judging that the risk of collision with the vehicle is likely to happen. If yes, the loudspeakers of the sound boxes on the two sides of the rear row send out alarm prompts to prompt that a vehicle comes behind the passenger who wants to get off the vehicle and send a control instruction to the door lock controller, the door lock controller sends a rear door lock locking signal to control the rear door to be automatically attracted and locked, and the passenger is forbidden to open the door at the current time. The system can actively give an alarm sound and lock a rear door lock on the getting-off side of a passenger to remind the passenger of getting-off danger so as to avoid car accidents caused by door opening, and the safety of the passenger is protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobiles, and in particular relates to a rear passenger getting off-vehicle warning and locking system and method. Background Art

[0002] As the automobile and electric vehicle markets grow, complex road conditions are also increasing. When the rear passengers get off the vehicle, they are at risk of being hit or killed by vehicles coming from behind. The reason for this traffic accident is that under such complex road conditions, the rear passengers cannot observe the blind spot on the side and rear of the vehicle when getting off. When opening the door to get off, if there is a vehicle coming from the side and rear, there is a risk of collision, resulting in tragedies such as death and injury. Based on this, it is urgent to develop a rear passenger getting off warning, locking system and method to effectively solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a rear passenger getting off the vehicle warning and locking system, and also to provide a rear passenger getting off the vehicle warning and locking method, so as to solve the problem of preventing rear passengers from being injured or killed by vehicles coming from behind when getting off the vehicle.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A rear passenger exit warning and locking system, including a corner radar, a corner radar controller, an audio system, a mechanical lock sensor, a door lock controller, a seat sensor and a vehicle controller;

[0006] The corner radar is connected to the radar controller via a signal line, and can transmit the acquired vehicle speed and distance information to the corner radar controller; the corner radar controller is connected to the vehicle controller via a signal line, and can process the received information, calculate the TTC of the rear vehicle and transmit it to the vehicle controller;

[0007] The audio system is installed on both sides of the rear row of the vehicle, and its speakers are connected to the vehicle controller via signal lines;

[0008] The vehicle controller determines whether there is a collision risk based on the received vehicle speed and vehicle distance data. If there is a possibility of collision with the vehicle itself, it sends a control command to the speaker to control it to issue a voice prompt to remind the rear passenger who is about to get off that there is an oncoming vehicle behind him;

[0009] The seat sensor is used to identify whether there are passengers in the rear row and transmit the information to the main controller;

[0010] The mechanical lock sensor is installed on the door lock, and the mechanical lock sensor is connected to the door lock controller through a signal line, and can transmit the acquired signal to the door lock controller; the door lock controller is connected to the vehicle controller through a signal line, and can process the received signal and transmit it to the vehicle controller;

[0011] When the vehicle controller determines that there is a possibility of collision risk, it sends a rear door lock signal to the door lock controller, and the door lock controller controls the rear door to automatically attract and lock, prohibiting passengers from opening the door at the current time.

[0012] Furthermore, the corner radar is a millimeter wave radar, which is installed on the rear side of the vehicle and is used to detect the speed and distance of the vehicle coming from behind.

[0013] Furthermore, the corner radar controller is installed on the inner side of the rear tailgate of the vehicle.

[0014] Furthermore, the seat sensor is installed on the seat.

[0015] Furthermore, the mechanical lock sensor is installed on the door lock to detect whether the door lock is closed.

[0016] Furthermore, the door lock controller is installed on the inner side of the rear door of the vehicle.

[0017] A method for warning and locking a rear passenger from getting off a vehicle comprises the following steps: a corner radar detects the speed and distance of a vehicle approaching from the side and rear, and sends the data to a corner radar controller for processing, and then transmits the signal to a whole vehicle controller; when the whole vehicle controller determines that there is a possibility of a collision with the vehicle, a control command is sent to the speakers of the audio system, and the speakers of the audio system on both sides of the rear row issue an alarm prompt, prompting the rear passenger who is about to get off the vehicle that there is an approaching vehicle from the rear side; at the same time, a control command is sent to a door lock controller, and the door lock controller sends a rear door lock signal to control the rear door to automatically attract and lock, and prohibit the passenger from opening the door at the current time.

[0018] Furthermore, a method for early warning and locking a rear passenger when getting off a vehicle specifically comprises the following steps:

[0019] A. Determine whether there is someone sitting in the back seat:

[0020] A1. If the seat sensor recognizes that there is no passenger in the rear seat, the seat sensor signal is set to 0, the vehicle controller signal is an invalid value, and the system is in standby mode;

[0021] A2. If the seat sensor recognizes at least one passenger, the seat sensor signal is set to 1, the vehicle controller signal is set to 0, and the system is activated;

[0022] B. Determine the vehicle status:

[0023] B1. When the vehicle speed is not 0 km / h or the door is locked, the system is in standby mode;

[0024] B2: When the vehicle speed is 0 km / h and the doors are unlocked / locked, the system remains activated;

[0025] C. When the mechanical lock sensor determines that the passenger has pre-opened the door, the corresponding passenger seat side door open signal is set to 1, and the door lock controller transmits the signal to the vehicle controller;

[0026] D. The vehicle controller determines whether there is a risk of collision by receiving the speed and distance data of the vehicle coming from behind. Specifically, the radar sensor detects the speed and distance information of the vehicle coming from behind in real time and transmits it to the radar controller. After processing, the radar controller sends the TTC of the vehicle coming from behind to the vehicle controller to determine whether there is a risk of collision;

[0027] E. The vehicle controller controls the speaker alarm and whether the door locks are normally opened or locked according to the risk level:

[0028] E1: If there is no collision risk, the vehicle controller signal is set to 1, no risk, you can open the vehicle normally and get off, without any related alarms or actions;

[0029] E2: If there is a collision risk, but it is not a high risk, the vehicle controller signal is set to 2, low risk, the vehicle controller controls the speaker to work, and the alarm sounds for 3 seconds to remind passengers that there is a collision risk;

[0030] E3. If there is a collision risk, and it is a high risk, the vehicle controller signal is set to 3, high risk, the vehicle controller controls the speaker to work, the alarm sounds, and the vehicle controller sends a locking signal to the door lock controller. The door lock controller controls the corresponding door to automatically attract and lock, lock the door, prevent the rear door from unlocking, and prohibit passengers from opening the door to get off the vehicle at this time.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The rear passenger getting off warning and locking system of the present invention comprises a millimeter wave radar installed on the side of the vehicle, speakers on both sides of the rear row and a rear door mechanical lock sensor. The radar detects the speed and distance of the vehicle approaching from the side and rear. If there is a possibility of collision with the vehicle, the speakers on both sides send out an alarm to remind the rear passengers who are about to get off that there is an approaching vehicle from the side and rear. At the same time, the mechanical lock sensor sends a rear door lock signal. At this time, the passengers cannot open the rear door, thereby achieving the purpose of prohibiting the rear passengers from getting off.

[0033] The rear passenger getting off warning and locking method of the present invention can well protect the safety of the elderly, visually impaired people and children. Since they cannot fully judge whether it is safe when getting off the vehicle, if there is danger, the system will actively send out an alarm sound through the speaker on the side of the vehicle to get off and lock the rear door locks to remind the passengers of the danger of getting off the vehicle to avoid traffic accidents caused by opening the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A flowchart of the steps of the rear passenger exit warning and locking system method of the present invention;

[0036] Figure 2 The structural block diagram of the rear passenger getting off warning and locking system of the present invention;

[0037] Figure 3 Schematic diagram of signal transmission of the rear passenger getting off warning and locking system of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with embodiments:

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] The rear passenger getting off the vehicle warning and locking system of the present invention comprises a corner radar, a corner radar controller, an audio system, a mechanical lock sensor, a door lock controller, a seat sensor and a vehicle controller.

[0042] The corner radar is a millimeter-wave radar installed on the rear side of the vehicle, which is used to detect the speed and distance of the vehicle coming from behind. The corner radar is connected to the corner radar controller through a signal line, and can transmit the acquired speed and distance information to the corner radar controller. The corner radar controller is installed on the inner side of the rear tailgate of the vehicle, and is connected to the vehicle controller through a signal line. It can process the received information, calculate the TTC of the vehicle coming from behind, and transmit it to the vehicle controller.

[0043] In the prior art, TTC is an indicator for measuring collision risk, which refers to the time required for a vehicle to collide with the obstacle ahead while maintaining the current speed and direction. It can be expressed by the following formula:

[0044]

[0045] Wherein, Distance represents the distance between the vehicle and the obstacle, and Relative Speed ​​represents the relative speed between the vehicle and the obstacle. In the present invention, TTC is the time required for the target vehicle to collide with the host vehicle while maintaining the current motion state.

[0046] The audio system is installed on both sides of the rear row of the vehicle, and its speakers are connected to the vehicle controller through a signal line. In addition, if the vehicle audio system is only connected to the central control, the vehicle controller can also send a signal to the central control, and the central control controls the audio system.

[0047] The vehicle controller determines whether there is a risk of collision based on the received vehicle speed and distance data. If there is a possibility of collision with the vehicle itself, it sends a control command to the speaker to control it to issue a voice prompt to remind the rear passengers who are about to get off the vehicle that there is an oncoming vehicle behind them and there is a risk of collision.

[0048] The seat sensor is installed on the seat and can identify whether there are passengers in the back row and transmit the information to the main controller.

[0049] The mechanical lock sensor is installed on the door lock to detect whether the door lock is closed. The mechanical lock sensor is connected to the door lock controller via a signal line and can transmit the acquired signal to the door lock controller. The door lock controller is installed on the inside of the rear door of the vehicle and is connected to the vehicle controller via a signal line and can process the received signal and transmit it to the vehicle controller.

[0050] When the vehicle controller determines that there is a possibility of collision risk, it sends a rear door lock signal to the door lock controller, and the door lock controller controls the rear door to automatically attract and lock, prohibiting passengers from opening the door at the current time.

[0051] The rear passenger getting off warning and locking method of the present invention uses a corner radar to detect the speed and distance of the vehicle coming from the side and rear, and sends the data to the corner radar controller for processing and then transmits the signal to the vehicle controller. When the vehicle controller determines that there is a possibility of collision with the vehicle, it sends a control command to the speakers of the audio system, and the speakers of the audio system on both sides of the rear row issue an alarm prompt to remind the rear passenger who is about to get off that there is a vehicle coming from the rear side. At the same time, it sends a control command to the door lock controller, and the door lock controller sends a rear door lock signal to control the rear door to automatically attract and lock, prohibiting passengers from opening the door at the current time. Specifically, it includes the following steps:

[0052] 1. Determine whether there is someone sitting in the back seat:

[0053] If the seat sensor recognizes that there are no passengers in the rear seats, the seat sensor signal is set to 0, the vehicle controller signal is an invalid value, and the system is in standby mode.

[0054] If the seat sensor recognizes that there is at least one passenger, the seat sensor signal is set to 1 (indicating that there is a passenger), the vehicle controller signal is 0, and the system is activated.

[0055] 2. Determine the vehicle status:

[0056] When the vehicle speed is not 0 km / h or the doors are locked, the system is on standby.

[0057] The system remains active when the vehicle speed is 0 km / h and the doors are unlocked / locked.

[0058] 3. When the mechanical lock sensor determines that the passenger has pre-opened the door, the corresponding passenger seat side door opening signal is set to 1 (open door), and the door lock controller transmits the signal to the vehicle controller.

[0059] 4. The vehicle controller determines whether there is a risk of collision by receiving the speed and distance data of the vehicle coming from behind. Specifically, the corner radar detects the speed and distance information of the vehicle coming from behind in real time and transmits it to the corner radar controller. After processing, the radar controller sends the TTC of the vehicle coming from behind to the vehicle controller to determine whether there is a risk of collision.

[0060] 5. The vehicle controller controls whether the door locks are normally opened or locked according to the risk level:

[0061] If there is no risk of collision, the vehicle controller signal is set to 1 (no risk), and you can open the door and get off the vehicle normally without any related alarms or actions.

[0062] If there is a collision risk, but it is not a high risk, the vehicle controller signal is set to 2 (low risk), the vehicle controller controls the speaker to work, and the alarm sounds for 3S to remind passengers that there is a collision risk.

[0063] If there is a collision risk, and it is a high risk, the vehicle controller signal is set to 3 (high risk), the vehicle controller controls the speaker to work, the alarm sounds, and the vehicle controller sends a locking signal to the door lock controller. The door lock controller controls the corresponding door to automatically attract and lock, lock the door, prevent the rear door from unlocking, and prohibit passengers from opening the door to get off the vehicle at this time.

[0064] In addition, the rear passenger getting off warning, locking system and method of the present invention do not take into account the abnormal driving situation where the vehicle speed is high but the door is forced to open.

[0065] In the present invention, on the vehicle, the door unlocking / locking can be in the door closed state, and the door unlocking / locking state does not affect the realization of the system function. In the present invention, the high risk, low risk and no risk determined by the vehicle controller can be customized according to actual conditions, and are not further limited here.

[0066] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A rear passenger exit warning and locking system, characterized in that: Including corner radar, corner radar controller, audio, mechanical lock sensor, door lock controller, seat sensor and vehicle controller; The corner radar is connected to the radar controller via a signal line, and can transmit the acquired vehicle speed and distance information to the corner radar controller; the corner radar controller is connected to the vehicle controller via a signal line, and can process the received information, calculate the TTC of the rear vehicle and transmit it to the vehicle controller; The audio system is installed on both sides of the rear row of the vehicle, and its speakers are connected to the vehicle controller via signal lines; The vehicle controller determines whether there is a collision risk based on the received vehicle speed and vehicle distance data. If there is a possibility of collision with the vehicle itself, it sends a control command to the speaker to control it to issue a voice prompt to remind the rear passenger who is about to get off that there is an oncoming vehicle behind him; The seat sensor is used to identify whether there are passengers in the rear row and transmit the information to the main controller; The mechanical lock sensor is installed on the door lock, and the mechanical lock sensor is connected to the door lock controller through a signal line, and can transmit the acquired signal to the door lock controller; the door lock controller is connected to the vehicle controller through a signal line, and can process the received signal and transmit it to the vehicle controller; When the vehicle controller determines that there is a possibility of collision risk, it sends a rear door lock signal to the door lock controller, and the door lock controller controls the rear door to automatically attract and lock, prohibiting passengers from opening the door at the current time.

2. A rear passenger exit warning and locking system according to claim 1, characterized in that: The corner radar is a millimeter-wave radar installed on the rear side of the vehicle and is used to detect the speed and distance of the vehicle coming from behind.

3. The rear passenger exit warning and locking system according to claim 1, characterized in that: The corner radar controller is installed on the inner side of the rear tailgate of the vehicle.

4. The rear passenger exit warning and locking system according to claim 1, characterized in that: The seat sensor is installed on the seat.

5. The rear passenger exit warning and locking system according to claim 1, characterized in that: The mechanical lock sensor is installed on the door lock and is used to detect whether the vehicle door lock is closed.

6. The rear passenger exit warning and locking system according to claim 1, characterized in that: The door lock controller is installed on the inner side of the rear door of the vehicle.

7. A method for warning and locking a rear passenger when getting off a vehicle, characterized in that: The following steps are involved: The corner radar detects the speed and distance of the vehicle coming from the rear and sends the data to the corner radar controller for processing and then transmits the signal to the vehicle controller. If the vehicle controller determines that there is a possibility of collision with the vehicle, it sends a control command to the speakers of the audio system. The speakers of the audio system on both sides of the rear row will sound an alarm to remind the passengers in the rear row who are about to get off the vehicle that there is a vehicle coming from the rear. At the same time, the control command is sent to the door lock controller, and the door lock controller sends a signal to lock the rear door locks to control the rear doors to automatically attract and lock, prohibiting passengers from opening the doors at the current time.

8. The rear passenger getting off the vehicle warning and locking method according to claim 1, characterized in that: The specific steps include: A. Determine whether there is someone sitting in the back seat: A1. If the seat sensor recognizes that there is no passenger in the rear seat, the seat sensor signal is set to 0, the vehicle controller signal is an invalid value, and the system is in standby mode; A2. If the seat sensor recognizes at least one passenger, the seat sensor signal is set to 1, the vehicle controller signal is set to 0, and the system is activated; B. Determine the vehicle status: B1. When the vehicle speed is not 0 km / h or the door is locked, the system is in standby mode; B2: When the vehicle speed is 0 km / h and the doors are unlocked / locked, the system remains activated; C. When the mechanical lock sensor determines that the passenger has pre-opened the door, the corresponding passenger seat side door open signal is set to 1, and the door lock controller transmits the signal to the vehicle controller; D. The vehicle controller determines whether there is a risk of collision by receiving the speed and distance data of the vehicle coming from behind. Specifically, the radar sensor detects the speed and distance information of the vehicle coming from behind in real time and transmits it to the radar controller. After processing, the radar controller sends the TTC of the vehicle coming from behind to the vehicle controller to determine whether there is a risk of collision; E. The vehicle controller controls the speaker alarm and whether the door locks are normally opened or locked according to the risk level: E1: If there is no collision risk, the vehicle controller signal is set to 1, no risk, you can open the vehicle normally and get off, without any related alarms or actions; E2: If there is a collision risk, but it is not a high risk, the vehicle controller signal is set to 2, low risk, the vehicle controller controls the speaker to work, and the alarm sounds for 3 seconds to remind passengers that there is a collision risk; E3. If there is a collision risk, and it is a high risk, the vehicle controller signal is set to 3, high risk, the vehicle controller controls the speaker to work, the alarm sounds, and the vehicle controller sends a locking signal to the door lock controller. The door lock controller controls the corresponding door to automatically attract and lock, lock the door, prevent the rear door from unlocking, and prohibit passengers from opening the door to get off the vehicle at this time.

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