CN108001343A - A kind of car door prior-warning device and method for early warning - Google Patents

Abstract

The invention discloses a car door early warning device and an early warning method, which belong to the field of electronic control system devices for automobile safety. The early warning device includes a sensor module, a power supply module, a start-stop module, a control module, an actuator module and a warning module. The early warning method is disclosed: 1) read information through the control module, when the vehicle speed is 0, the controllable switch is closed, and the early warning system is activated; 2) the control module reads the data of the rearview mirror, the door part, and the tail light part; 3) carries out Early warning level recognition, to judge whether to open the door; 4) Carry out emergency early warning recognition, to judge whether there is an emergency situation and the coping strategy; 5) When the car starts and the speed is not 0, turn off the early warning system; When the occupants in the car open the door, they will give an early warning, so that the occupants in the car can know the specific situation of pedestrians and driving behind the door in advance, and provide safety guarantee for the occupants in the car and the people coming behind the door.

Description

A car door early warning device and early warning method

technical field

The invention belongs to the field of electronic control system devices for automobile safety, and specifically refers to a car door early warning device and an early warning method.

Background technique

When the car stops running and the people in the car leave the car, they often do not pay attention to the pedestrians behind or open the door when the car comes, which can easily cause corresponding traffic accidents and bring unnecessary harm to themselves and others. Under certain circumstances, even if the people in the car have a certain awareness of observation, it is difficult to make appropriate responses in a short time when encountering unexpected situations.

In order to solve the above-mentioned problem of crosswind influence, based on the existing domestic research foundation, BAIC Motor Co., Ltd. invented a door opening reminder device and a car (publication number CN205498758U), which provides a reminder device that senses that the door is opened by a force-sensitive sensor. The opening action controls the voice player through the control unit to remind the occupants of the car to observe the surrounding environment. To a certain extent, the device can remind the driver or passengers to check the pedestrians and traffic behind the car, and take early evasion measures, reducing the risk of accidents due to door opening. resulting in traffic accidents. But it can only be passively reminded, and cannot play the role of active prevention.

A car door opening anti-collision reminder device invented by Yanfeng Visteon Automobile Company (public number CN203592961U), relates to a car door opening anti-collision reminder device, including a sensor and a central controller, the sensor can collect signals, and the controller controls the alarm device to remind The occupants in the car can effectively reduce or prevent collisions with other vehicles or pedestrians when opening the door, and improve driving safety, but there are fewer sensors and cannot adapt to complex road conditions.

Hou Xianjun of Wuhan University of Technology invented a control system to ensure that car occupants safely open the door and get off the car (public number CN105015417A), including detection devices, door self-locking devices, wheel speed sensors, door handle angle detection devices, etc., through sensors to detect signals , the controller determines whether the door is opened, effectively avoiding the occurrence of traffic accidents. However, the device cannot cope with emergencies and has insufficient adaptability.

Therefore, the defects in the prior art that the automobile control system cannot actively warn, the control system reminding device cannot adapt to complex situations and cannot cope with emergencies have always been technical problems to be solved by those skilled in the art.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a car door early warning device and an early warning method. The early warning device of the present invention is simple in structure, low in cost and high in feasibility; Probability of an accident when turned on.

The present invention is achieved like this:

The invention discloses a car door early warning device. The early warning device includes a sensor module, a start-stop module, a control module, a door action module and a warning module; the sensor module, start-stop module, car door action module and warning module are respectively It is connected with the control module; the control module is used to collect the data information of each sensor device, and code each sensor device to determine its position and process the collected data information.

The sensor module includes a vehicle speed sensor installed on the wheel part; a lateral distance sensor and a lateral infrared speed sensor installed on the rearview mirror part; a door opening range sensor and an infrared human body sensor installed on the door part;

The longitudinal distance sensor and longitudinal infrared speed sensor installed in the taillight part; the sensor device on the key equipment of the car connected to the sensor module is used to detect relevant information;

The door action module includes a return switch and a lock switch installed on the door part; the switch on the door connected to the door action module makes the door open/close;

The warning module includes a buzzer installed on the door part, a warning light and an alarm on the taillight part.

Further, the early warning device further includes a power supply module, which is also connected to the control module, and the power supply module provides power guarantee for the early warning device.

Further, the start-stop module includes a controllable switch, which is jointly triggered by the current signal of the vehicle start lock and the feedback signal of the control module to determine whether the power supply module supplies power to the control module.

Further, the control module includes two groups of modules for early warning degree identification and sudden early warning identification.

The invention also discloses an early warning method of a car door early warning device, the specific steps of which are as follows:

Step 1: The control module reads the information of the vehicle speed sensor. When the vehicle speed is 0, the controllable switch is closed, and the start-stop module activates the early warning system;

Step 2: The control module reads the sensor data of the rearview mirror, the door, and the taillight;

Step 3: The control module recognizes the degree of warning and judges whether to open the door;

Step 4: The control module conducts emergency early warning identification to determine whether there is an emergency situation and a response strategy;

Step 5: When the car is started and the information of the vehicle speed sensor is not 0, the start-stop module turns off the early warning system.

Further, the step three is specifically:

3.1, when the sensor does not detect pedestrians or objects approaching from the side or rear of the car, the door will open normally;

3.2. When the sensor detects that there are pedestrians or objects approaching from the side of the car, the sensor judges the time when the object approaches according to the detected distance and speed. When the time is greater than the set threshold, enter the next step of judgment. When the time is less than the set threshold When the threshold is reached, the lock switch is locked and the door cannot be opened;

3.3. When the sensor detects that there are pedestrians or objects approaching behind the car, the sensor judges the time when the object approaches according to the detected distance and speed. When the time is greater than the set threshold, the warning light turns on to warn the pedestrians behind, and the door opens normally. When the time is less than the set threshold, the sensor judges the lateral distance between the object and the car door, and the control module judges the corresponding magnitude of the door opening.

Further, the step four is specifically:

4.1. When the door is opened to a certain extent and the sensor receives an emergency, the infrared human body sensor starts to work;

4.2. When the sensor detects that people in the car have not entered the door area, the buzzer starts to alarm, and the reply switch is closed to make the door close quickly;

4.3. When the sensor detects that people in the car enter the door area, the buzzer will alarm, and the door will be closed slowly, and the alarm will be turned on. The slow movement of the door can avoid causing harm to the occupants in the car, and the opening of the alarm reminds people to pay attention.

The beneficial effect of the present invention compared with prior art is:

1) Simple and easy to install: the structure of the present invention is simple, and the installation of sensors and corresponding devices is relatively convenient;

2) Reliable work: the lateral and longitudinal sensors cooperate with each other, and there will be no misjudgment;

3) Good adaptability: Under complex working conditions, the opening range of the car door can be flexibly adjusted to adapt to different road conditions;

4) Good emergency performance: when there is an emergency, it can make a correct response to ensure the safety of drivers and passengers.

Description of drawings

Fig. 1 is the hardware composition diagram of early warning device of the present invention;

Fig. 2 is the arrangement diagram of sensor, switch and warning device of the present invention;

Fig. 3 is the work flowchart of early warning method of the present invention;

Among them, 1-sensor module, 2-power supply module, 3-start-stop module, 4-control module, 41-warning degree recognition, 42-emergency warning recognition, 5-door action module, 6-warning module, 11-wheel Part, 111-vehicle speed sensor, 12-rearview mirror part, 121-lateral distance sensor, 122-lateral infrared speed sensor, 13-door part, 131-return switch, 132-lock switch, 133-buzzer , 134-door opening range sensor, 135-infrared human body sensor, 14-tail light part, 141-warning light, 142-alarm, 143-longitudinal distance sensor, 144-longitudinal infrared speed sensor.

Detailed ways

The present invention will be further described below in conjunction with the embodiments and the accompanying drawings. The following descriptions are only some, not all, embodiments of the present invention.

As shown in Figure 1, the early warning device of the present invention comprises a sensor module 1, a power supply module 2, a start-stop module 3, a control module 4, a door action module 5 and a warning module 6, wherein the control module 4 and the sensor module 1 power supply module 2, The start-stop module 3, the door action module 5 and the warning module 6 are connected respectively. The control module 4 includes two modules of early warning degree identification 41 and emergency early warning identification 42, through which emergency situations can be effectively identified and corresponding early warning actions can be taken.

As shown in Figure 2, Fig. 2 is the arrangement diagram of sensor, switch and warning device of the present invention, and wherein sensor module 1 comprises the vehicle speed sensor 111 that is installed in wheel part 11; And the side infrared speed sensor 122; The door opening amplitude sensor 134 and the infrared human body sensor 135 installed in the car door part 13; The longitudinal distance sensor 143 and the longitudinal infrared speed sensor 144 installed in the tail light part 14; The return switch 131 and the lock switch 132 of the part 13; the warning module 6 includes a buzzer 133 installed on the door part 13 and a warning light 141 and an alarm 142 of the taillight part 14.

As shown in FIG. 3 , when the vehicle stops running, the vehicle speed sensor 111 collects the vehicle speed sensor signal, and when the vehicle speed is read to be 0, the controllable switch is closed, and the start-stop module 3 activates the early warning system.

The control module 4 reads the sensor data of the rearview mirror part 12 , the car door part 13 , and the taillight part 14 .

When the sensor does not detect pedestrians or objects approaching from the side or rear of the car, the door opens normally; when the sensor detects pedestrians or objects approaching from the side of the car, the sensor judges the approaching time of the object based on the detected distance and speed. When the threshold is set, enter the next step of judgment. When the time is less than the set threshold, the lock switch 132 is locked and the door cannot be opened; The speed judges the time when the object is approaching. When the time is greater than the set threshold, the warning light 141 is turned on to warn the pedestrians behind, and the car door is opened normally. When the time is less than the set threshold, the sensor judges the lateral distance between the object and the car door. The control module 4 judges the corresponding magnitude of the door opening.

When the car door was opened to a certain extent, when the sensor received an emergency, the infrared human body sensor 135 started to work; Close; when the sensor detects that people in the car enter the door area, the buzzer 133 will give an alarm, and the door will be closed slowly, and the alarm 142 will be turned on.

The specific implementation process is:

The vehicle speed sensor 111 transmits the signal to the control module 4. After the control module 4 receives the signal, it controls the start-stop module 3 to start the door warning system. When the signal of the vehicle is received, the longitudinal distance sensor 143 and the longitudinal infrared speed sensor 144 of the tail light part start to work. To the control module 4, the control module judges the time when pedestrians or oncoming vehicles approach. When the time is greater than the set threshold, the longitudinal distance sensor 143 and the longitudinal infrared speed sensor 144 of the taillight part 14 start to work. When the time is less than the set threshold When the threshold is reached, the lock switch 132 is locked and the door cannot be opened.

When the longitudinal distance sensor 143 and the longitudinal infrared speed sensor 144 of the tail light part 14 perceive that there is a pedestrian or an oncoming vehicle at the rear, the sensor transmits the data to the control module 4, and the control module 4 judges the time when the pedestrian or the oncoming vehicle approaches at the rear. When the time is greater than the set threshold, the warning light 141 of the taillight part 14 is turned on to warn the rear and allow the door to be opened. The distance is used to judge the opening range of the car door. The door opening range sensor 134 transmits the data to the control module 4, and the control module 4 monitors in real time.

When the car door is opened, the emergency early warning identification 42 module starts to work, and when an object breaks in suddenly at the rear or when the speed of a pedestrian coming to the car changes suddenly, the infrared human body sensor 135 starts to work, and when the sensor detects that the people in the car have not entered the door area , the buzzer 133 reports to the police, and the reply switch 131 is closed, and the car door is closed at a relatively fast speed. The car door is closed at a speed, and the alarm 142 is opened simultaneously to remind the rear.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. a kind of car door prior-warning device, it is characterised in that the prior-warning device includes sensor assembly（1）, start and stop module （3）, control module（4）, car door action module（5）And alarm module（6）；The sensor assembly（1）, start and stop module（3）、 Car door action module（5）, alarm module（6）Respectively with control module（4）Connection；

The sensor assembly（1）Including installed in wheel portion（11）Vehicle speed sensor（111）；

Installed in rearview mirror part（12）Lateral distance sensor（121）And lateral infrared velocity sensor（122）；

Installed in car door part（13）Car door opening amplitude sensor（134）And infrared human body sensor（135）；

Installed in taillight part（14）Fore-and-aft distance sensor（143）With the infrared velocity sensor in longitudinal direction（144）；

The car door action module（5）Including installed in car door part（13）Reversion switch（131）And lockup switch（132）；

The alarm module（6）Including installed in car door part（13）Buzzer（133）And taillight part（14）Warning lamp （141）, alarm（142）.

2. a kind of car door prior-warning device according to claim 1, it is characterised in that the prior-warning device further includes power supply Module（2）, the power module（2）Also with control module（4）Connection.

A kind of 3. car door prior-warning device according to claim 1, it is characterised in that the start and stop module（3）Containing controllable Switch, by the current signal and control module of start-up lock（4）Feedback signal trigger jointly.

A kind of 4. car door prior-warning device according to claim 1, it is characterised in that the control module（4）Including pre- Alert degree identification（41）And burst early warning identification（42）.

5. a kind of method for early warning of car door prior-warning device, it is characterised in that comprise the following steps that：

Step 1：Control module（4）Read vehicle speed sensor（111）Information, when it is 0 to read speed, controllable switch closure, Start and stop module（3）Start early warning system；

Step 2：Control module（4）Read rearview mirror part（12）, car door part（13）, taillight part（14）Sensor number According to；

Step 3：Control module（4）Early warning degree identification is carried out, it is determined whether to enable car door；

Step 4：Control module（4）Burst early warning identification is carried out, determines whether emergency case and countermeasure；

Step 5：Work as automobile starting, vehicle speed sensor（111）Information be 0 when, start and stop module（3）Close early warning system.

6. the method for early warning of a kind of car door prior-warning device according to claim 5, it is characterised in that the step three has Body is：

3.1, when sensor is not detected by automobile side and rear has pedestrian or object proximity, car door is normally-open；

3.2, when sensor detects that there are pedestrian or object proximity in automobile side, sensor is according to the distance and velocity estimated of detection The time of object proximity, when the time being more than set threshold value, judges into next step, is less than set threshold value when the time When, lockup switch（132）Locking, car door can not be opened；

3.3, when sensor detects that there are pedestrian or object proximity in automobile rear, sensor is according to the distance and velocity estimated of detection The time of object proximity, when the time being more than set threshold value, warning lamp（141）Open, warn rear pedestrian, car door is normal Open, when the time being less than set threshold value, the lateral distance of sensor judgment object and car door, control module（4）Judge The corresponding amplitude of car door opening.

7. the method for early warning of a kind of car door prior-warning device according to claim 5, it is characterised in that the step four has Body is：

4.1, when car door opening certain amplitude, when sensor receives emergency case, infrared human body sensor（135）Start work Make；

4.2, when sensor detects that occupant is introduced into car door region, buzzer（133）Start to alarm, reversion switch （131）Closure, makes car door quick closedown；

4.3, when sensor detects that occupant enters car door region, buzzer（133）Alarm, and car door slowly closes Close, alarm（142）Open.