WO2023202019A1

WO2023202019A1 - Automobile electromagnetic attraction door system and control method

Info

Publication number: WO2023202019A1
Application number: PCT/CN2022/127318
Authority: WO
Inventors: 王天洋; 王宇; 杨冬冬; 马良
Original assignee: 一汽奔腾轿车有限公司
Priority date: 2022-04-22
Filing date: 2022-10-25
Publication date: 2023-10-26
Also published as: CN114909058B; CN114909058A

Abstract

Disclosed are an automobile electromagnetic attraction door system and a control method. The automobile electromagnetic attraction door system comprises an information acquisition system, a control system, and an execution and display system. The signal acquisition system comprises an ignition switch, an electromagnetic attraction door switch, and a door signal sensor, and the ignition switch and the electromagnetic attraction door switch are connected to the door signal sensor, respectively. The control system comprises a door module control unit, and the door module control unit is connected to the door signal sensor and the electromagnetic attraction door switch. The execution and display system comprises an electromagnetic coil arranged on a door frame and a vehicle door edge, and the electromagnetic coil is connected to the door module control unit. In the automobile electromagnetic attraction door system of the present invention, any vehicle door only needs to be gently closed to a certain angle, and the vehicle door can gently close by means of the door module control unit controlling the electromagnetic coil attraction until the vehicle door is locked, providing an anti-pinch function, solving the increased danger due to the vehicle door not being completely closed, and guaranteeing safety while better protecting the vehicle.

Description

An automobile electromagnetic closing door system and control method

Technical field

The invention belongs to the field of automobile electronic technology, and specifically relates to an automobile electromagnetic closing door system and a control method.

Background technique

With the widespread popularity of cars and the continuous improvement of people's living standards, people are no longer satisfied with the status quo of cars being a single means of transportation. On the basis of meeting basic needs, more and more car brands provide many novel car "black technologies" to meet people's spiritual needs.

Nowadays, many cars make loud and noisy sounds when closing the door. If the door is closed lightly, there is a risk that the door will not close, which will bring a bad car experience to the car owners. Many car owners do not want to see the doors of their cars being slammed. In addition, there is a risk of being pinched when closing the door, posing safety risks to passengers.

Contents of the invention

The present invention aims to solve the problem that the car door makes a loud sound when closing, cannot be closed even if the door is closed gently, and there is also a risk of being pinched during the closing process, thereby providing a car electromagnetic suction door system and a control method that can be closed gently. The car door, until the door is locked, has an anti-pinch function, which solves the increased risk of the door not being fully closed, ensuring safety while better protecting the car and giving car owners a better car experience.

In order to solve the above problems, the present invention proposes an automobile electromagnetic closing door system, which includes an information collection system, a control system, an execution and a display system, and the signal collection system includes an ignition switch, an electromagnetic closing door switch, and a door signal sensor. The ignition switch and the electromagnetic door switch are respectively connected to the door signal sensor; the control system includes a door module control unit, and the door module control unit is connected to the door signal sensor and the electromagnetic door switch; the execution and display system includes Electromagnetic coils arranged on the door frame and door side, the electromagnetic coils are connected to the door module control unit;

The electromagnetic door switch is a normally open switch that closes when pressed or receives a closing signal from the door module control unit; at the same time, it sends a switching signal to the door signal sensor;

The door signal sensor is used to collect the door status signal and the door angle signal; when the door signal sensor simultaneously collects the door unclosed signal and the angle signal, the door signal sensor immediately outputs a lock signal to the door module control unit; the door signal When the sensor collects the blocked signal, it immediately outputs an unlocking signal to the door module control unit;

The door module control unit is responsible for receiving the locking signal and unlocking signal from the door signal sensor in real time. When receiving the locking signal, it sends a current opening signal to the electromagnetic coil; when receiving the unlocking signal, it sends a current closing signal to the electromagnetic coil, and at the same time, it sends a current closing signal to the electromagnetic coil. The electromagnetic door switch sends a closing signal;

The electromagnetic coil is responsible for receiving the signal current opening signal and current closing signal from the door module control unit, and making the current opening and closing operations. The current opening time is the set working time, and after the current continuous opening time exceeds the set working time, The system default functions are completed.

Further, the automobile electromagnetic door system also includes a body control unit, and the door module control unit is integrated in the body control unit.

Further, the door signal sensor is arranged in the door or under the B-pillar.

Further, the execution and display system also includes an infotainment system, which is connected to the door module control unit, and its display screen is integrated on the central control screen; the infotainment system is responsible for receiving signals from the door module control unit, and displayed on the display screen,

The invention also provides a control method for an automobile electromagnetic door system, which includes the following steps:

Step 1: Turn on the ignition switch and power on the vehicle;

Step 2: The electromagnetic door switch recognizes the driver's operating intention. If it is closed, it provides an input signal to the door signal sensor. The door signal sensor stops working. If it is not closed, the system starts normally;

Step 3: The door signal sensor starts to collect the door status signal and the door angle signal; the door signal sensor determines whether the door is closed based on the door status signal. If it is closed, it stops working. If it is not closed, it collects the signal that the door is not closed; The signal sensor determines whether the angle between the door angle and the longitudinal direction of the body is less than the set angle based on the door angle signal, and whether the duration is greater than the angle set time. If not, the process ends and the system does not work. If the above conditions are met, the collected The angle meets the signal; when the door signal sensor collects the door unclosed signal and the angle meets signal at the same time, the door signal sensor immediately outputs a lock signal to the door module control unit;

Step 4: When the door module control unit receives the locking signal, the door module control unit sends a current opening signal to the electromagnetic coil;

Step 5: The electromagnetic coil immediately turns on the current, and the door starts closing;

Step 6: After collecting the signal that the door is not closed and the angle is satisfied, the door signal sensor starts to continuously collect the door resistance signal after the delay time. When the size of the door resistance N is greater than the door resistance specified value, and the time is greater than the resistance setting time When the door signal sensor collects a blocked signal, the door signal sensor immediately outputs an unlocking signal to the door module control unit, and performs step seven; if the door signal sensor does not collect a blocked signal, perform step nine;

Step 7: When the door module control unit receives the unlock signal, the door module control unit sends a current closing signal to the electromagnetic coil, controls the current to close, stops the door closing, and sends a closing signal to the electromagnetic closing door switch to perform step 8;

Step 8: After receiving the closing signal, the electromagnetic door switch changes from the open state to the closed state, and the function ends;

Step 9: The electromagnetic coil will continue to work for a set working time and will automatically disconnect and close. At this time, the door is completely closed and the function ends.

Further, the execution and display system also includes an infotainment system, the infotainment system is connected to the door module control unit, and its display screen is integrated on the central control screen; in step five, the door module control unit receives the signal sensor When the unlock signal is received, a closing failure signal is sent to the infotainment system. After receiving the closing failure signal, the infotainment system immediately transmits a failure prompt signal to the display screen through the LVDS video line, and the display screen prompts that the door has failed to close;

Further, in the seventh step, after the door is closed, the door module control unit sends a closing success signal to the infotainment system. After receiving the closing success signal, the infotainment system immediately transmits a success prompt signal to the display screen through the LVDS video line, and the display screen Indicates that the door is closed.

Compared with the existing technology, the present invention has the following advantages and beneficial effects:

The automatic electromagnetic suction door is used to maximize the protection of the car door, preventing the danger caused by the door not closing tightly, and at the same time increasing the number of times the door is used to achieve better protection of the car. At the same time, the anti-pinch function ensures the safety of passengers and drivers. The functional principle is simple and the technology is reliable.

The door module control unit (DCM) can be integrated into the body control unit or other systems, achieving a high degree of system integration.

The door signal sensor (DSS) system can be arranged in the car door or under the B-pillar or other dry areas, saving indoor space, being convenient and effective, and maximizing space utilization.

This system realizes automatic control of car door closing, is highly automated and modern, meets the needs of modern automotive electronics, and at the same time maximizes the user's car experience and feelings.

Description of the drawings

Figure 1 is a block diagram of the system of the present invention.

Figure 2 is a functional principle diagram of the system of the present invention.

Figure 3 is a flow chart of system function operation of the present invention.

Detailed ways

In order to describe the technical content, achieved objectives and effects of the present invention in detail, the following description will be made in conjunction with the embodiments and the accompanying drawings.

As shown in Figure 1, the functional system of the present invention mainly consists of an information collection system, a control system, and an execution and display system. In the signal acquisition system, there are ignition switch 1, electromagnetic door switch 2, and door signal sensor (DSS) 3. The electromagnetic door switch is a normally open switch. Ignition switch 1 and electromagnetic door switch 2 are connected to the door signals respectively. Sensor 3. The control system mainly includes a door module control unit (DCM) 4, which is connected to the door signal sensor 3 and the electromagnetic door switch 2. The execution and display system includes the electromagnetic coil 6 and the infotainment system (IVI) 7 arranged on the door frame and door side. The electromagnetic coil 6 is connected to the door module control unit 4 and the infotainment system 7. The entire system completes the automatic closing of the door. The whole process is convenient and safe. In addition, the door module control unit of the automobile's electromagnetic closing door can be integrated into the body control unit, which facilitates the realization of a high degree of system integration. The door signal sensor can be placed in the door or under the B-pillar to save space.

As shown in Figure 2, the functional principle of the system of the present invention is described as follows:

The electromagnetic door switch 2 provides a switch signal. When the vehicle is powered on, the electromagnetic door switch 2 defaults to the initial state, that is, a normally open switch. It can be actively closed by pressing it manually, or it can be automatically closed by the door module control unit ( DCM) 4 is controlled to close and provides the necessary input signal W1 to the door signal sensor (DSS) 3, and the door signal sensor (DSS) 3 stops working. Press repeatedly to cycle the electronic visor function "on" and "off".

Door signal sensor (DSS) 3 uses a high-precision sensor and is responsible for collecting three signals. One is the door status signal. When the door is not closed, it outputs the door unclosed signal C1; the other is the door angle signal, which is the longitudinal direction between the door and the body. A certain angle θ needs to satisfy the set angle θ1, where θ1 is the most appropriate angle verified by experiments, giving the operator the most convenient and comfortable experience. At the same time, the θ value needs to continue to satisfy θ<θ1 for a time S greater than the angle setting. The output angle meets the signal C2 at a fixed time S1, where S1 is a reasonable value selected after the test; when C1 and C2 are collected by the door signal sensor (DSS) 3 at the same time, the door signal sensor (DSS) 3 immediately controls the door module Unit 4 outputs the lock signal (LOCK); the third is the door force signal, which is the blocked signal C3. This signal is after collecting the signals of C1 and C2, and then starts to continuously collect the signal C3 after a delay of S2 milliseconds (the delay is to ensure that the door It is already in and has just started to automatically close. Similarly, S2 is also the optimal result obtained through combined experiments. C3 is the resistance size N when the door is closed, satisfying N greater than the specified door resistance value X, and the time S is greater than the resistance setting. The blocked signal collected at fixed time S3, in which the specified resistance value The signal sensor 3 immediately outputs the unlocking signal ULOCK to the door module control unit.

As a control system, the door module control unit 4 is responsible for receiving the lock signal and unlock signal from the door signal sensor 3 in real time, and transmits different signals to each system to complete different functions. Specifically, when the received signal is the lock signal LOCK , the door module control unit 4 sends a current turn-on signal D1 to the electromagnetic coil 6 to control the current to turn on; when the signal received is the unlock signal ULOCK, the door module control unit 4 sends a current turn-off signal D2 to the electromagnetic coil 6 to control the current to turn off. A closing failure signal D3 is sent to the infotainment system 7 to inform the door of the failure to close, and a closing signal D4 is sent to the electromagnetic door switch to control the electromagnetic door switch 2 to close. The closing success signal D5 is a signal sent to the infotainment system (IVI) after the current opening signal D1 is sent and the unlocking signal ULOCK provided by the door signal sensor 3 is not received for more than the set working time S4, where S4 is below Explain.

As an execution system, the electromagnetic coil is responsible for receiving the current opening signal D1 and the current closing signal D2 from the door module control unit 4, and making the current opening and closing operations. At the same time, when the D1 signal is received, the current opening time is the set work Time S4, setting the working time to S4 is also the optimal value obtained by comprehensive testing and calculation. If the current is continuously turned on for longer than S4, the system default function is completed.

The infotainment system (IVI) is responsible for receiving different signals and outputting the signal failure prompt signal L1 and the success prompt signal L2. The signals are transmitted to the display screen through the LVDS video line to display different contents and complete the function.

As shown in Figure 3, the system function operation process of the present invention is described as follows:

1) Function starts.

2) Turn on ignition switch 1, which can only be done after the vehicle is powered on. If the vehicle is powered off, this function cannot be turned on.

3) Press the electromagnetic door switch 2 to check whether it is pressed. If it is closed, the necessary input signal W1 is provided to the door signal sensor (DSS) 3. The door signal sensor (DSS) 3 stops working. If it is not closed, the system is normal. start up.

4) Door signal sensor (DSS) 3 starts to collect door status signals and door angle signals.

5) DSS determines whether the door status is closed based on the signal. If it is closed, the process ends. If it is not closed, the collected door is not closed signal C1.

6) DSS determines based on the signal whether the door angle and the longitudinal angle θ of the body are smaller than the set angle θ1, and whether the duration is greater than the angle setting time S1. If it is not met, the process ends and the system does not work. If the above conditions are met, the collected angle meets the signal C2.

7) If the DSS has collected the door unclosed signal C1 and the angle satisfying signal C2, it will immediately output the lock signal (LOCK) to the door module control unit (DCM).

8) When the door module control unit (DCM) 4 receives the signal LOCK, it sends the current start signal D1 signal to the electromagnetic coil 6 to make the electromagnetic coil work.

9) The electromagnetic coil current is turned on, and the door begins to close due to the magnetic force generated by the current.

10) After receiving the door unclosed signal C1 and the angle satisfying signal C2, the door signal sensor (DSS) starts to collect the door closing resistance signal C3 after the delay time S2. When the door resistance value N is greater than the door resistance specified value X, and When the time is greater than the resistance setting time S3, the door signal sensor (DSS) 3 immediately outputs the unlock signal ULOCK to the module control unit (DCM) 4.

11) When the door module control unit (DCM) 4 receives the signal ULOCK, it sends a current closing signal D2 to the electromagnetic coil 6, a closing failure signal D3 to the infotainment system (IVI), and a closing signal D4 to the electromagnetic door switch 2. .

12) The current of electromagnetic coil 6 is turned off immediately, the current operation is stopped, and the door stops closing.

13) The electromagnetic door switch 2 changes from the open state to the closed state after receiving the closing signal D4.

14) After receiving the failure signal D3 signal, the infotainment system (IVI) 7 immediately transmits the failure prompt signal L1 to the real screen through the LVDS video line. The display screen prompts that the door closing failed, please try again.

15) If no object is caught during this period, that is, the door signal sensor (DSS) 3 does not collect the resistance signal C3, the electromagnetic coil 6 will continue to work and automatically disconnect after the set working time S4 seconds, and the suction is completed. At this time, the door is completely closed. closure. At the same time, the door module control unit (DCM) 4 sends a closing success signal D5 to the infotainment system (IVI) 7 . After receiving the closing success signal D5, the infotainment system (IVI) immediately transmits the success prompt signal L2 to the real screen through the LVDS video line, and the display screen prompts that the door has been closed.

16) The process ends.

Claims

An automobile electromagnetic suction door system, which is characterized by: including an information collection system, a control system, an execution and a display system, and the signal collection system includes an ignition switch (1), an electromagnetic suction door switch (2), and a door signal sensor. (3), the ignition switch (1) and the electromagnetic door switch (2) are respectively connected to the door signal sensor (3); the control system includes a door module control unit (4), and the door module control unit (4) ) is connected to the door signal sensor (3) and the electromagnetic door switch (2); the execution and display system includes an electromagnetic coil (6) arranged on the door frame and door side, and the electromagnetic coil (6) is connected to the door module control unit (4);

The electromagnetic door switch (2) is a normally open switch that closes when pressed or receives a closing signal from the door module control unit (4); at the same time, it sends a switching signal to the door signal sensor (3);

The door signal sensor (3) is used to collect the door status signal and the door angle signal; when the door signal sensor (3) simultaneously collects the door unclosed signal (C1) and the angle signal (C2), the door signal sensor (3) Immediately output a lock signal (LOCK) to the door module control unit (4); when the door signal sensor (3) collects the blocked signal (C3), it immediately outputs an unlock signal (ULOCK) to the door module control unit (4);

The door module control unit (4) is responsible for receiving the locking signal (LOCK) and unlocking signal (ULOCK) from the door signal sensor (3) in real time. When receiving the locking signal, it sends a current opening signal (6) to the electromagnetic coil (6). D1); when receiving the unlocking signal, it sends a current closing signal (D2) to the electromagnetic coil (6), and at the same time sends a closing signal (D4) to the electromagnetic door switch;

The electromagnetic coil is responsible for receiving the current opening signal (D1) and the current closing signal (D2) from the door module control unit (4), and making the current opening and closing operations. The current opening time is the set working time (S4) , after the current continuous on time exceeds the set working time (S4), the system default function is completed.
An automobile electromagnetic closing door system according to claim 1, characterized in that it also includes a body control unit, and the door module control unit (4) is integrated in the body control unit.
An automobile electromagnetic door closing system according to claim 1, characterized in that the door signal sensor (3) is arranged in the car door or below the B-pillar.
An automobile electromagnetic door closing system according to claim 1 or 2, characterized in that the execution and display system further includes an infotainment system (7), and the infotainment system (7) is connected to the door module control unit (4), its display screen is integrated on the central control screen; the infotainment system (IVI) is responsible for receiving signals from the door module control unit (4) and displaying them through the display screen,
An automobile electromagnetic closing door system control method using the automobile electromagnetic closing door system according to claim 1, characterized in that it includes the following steps:

Step 1: Turn on the ignition switch (1) and power on the vehicle;

Step 2: The electromagnetic closing door switch (2) recognizes the driver's operating intention. If it is closed, it provides an input signal (W1) to the door signal sensor (3). The door signal sensor (3) stops working. If it is not closed, then The system starts normally;

Step 3: The door signal sensor (3) starts to collect the door status signal and the door angle signal; the door signal sensor (3) determines whether the door is closed based on the door status signal. If it is closed, it will stop working. If it is not closed, it will collect The door is not closed signal (C1); the door signal sensor (3) determines whether the angle between the door angle and the longitudinal direction of the vehicle body (θ) is less than the set angle (θ1) based on the door angle signal, and whether the duration is greater than the angle setting time (S1) , if not satisfied, the process ends and the system does not work. If the above conditions are met, the collected angle satisfies the signal (C2); the door signal sensor (3) simultaneously collects the door unclosed signal (C1) and the angle satisfies signal ( When C2), the door signal sensor (3) immediately outputs the lock signal (LOCK) to the door module control unit (4);

Step 4: When the door module control unit (4) receives the lock signal (LOCK), the door module control unit (4) sends a current opening signal (D1) to the electromagnetic coil;

Step 5: The electromagnetic coil immediately turns on the current, and the door starts closing;

Step 6: After collecting the door unclosed signal (C1) and the angle satisfying signal (C2), the door signal sensor (3) starts to continuously collect the door resistance signal after the delay time (S2). When the door resistance N is greater than When the door resistance reaches the specified value (X) and the time is greater than the resistance setting time (S3), the door signal sensor (3) collects the obstruction signal (C3), and the door signal sensor (3) immediately reports to the door module control unit (4) Output the unlock signal (ULOCK) and proceed to step seven; if the door signal sensor (3) does not collect the blocked signal (C3), proceed to step nine;

Step 7: When the door module control unit (4) receives the unlock signal (ULOCK), the door module control unit (4) sends a current closing signal (D2) to the electromagnetic coil, controls the current to close, stops the door closing, and sends a signal to the electromagnetic coil. The electromagnetic door switch sends a closing signal (D4) and executes step eight;

Step 8: After receiving the closing signal (D4), the electromagnetic door switch changes from the open state to the closed state, and the function ends;

Step 9: The electromagnetic coil continues to work for the set working time (S4) and then automatically disconnects and closes. At this time, the door is completely closed and the function ends.
The automobile electromagnetic door system control method according to claim 5, characterized in that the execution and display system further includes an infotainment system (7), and the infotainment system (7) is connected to the door module control unit (4) , its display screen is integrated on the central control screen; in step five, when the door module control unit (4) receives the unlock signal from the signal sensor (3), it sends a closing failure signal (D3) to the infotainment system, and the infotainment After receiving the closing failure signal (D3), the system (7) immediately transmits the failure prompt signal (L1) to the display screen through the LVDS video line, and the display screen prompts that the door has failed to close;
The automobile electromagnetic door system control method according to claim 6, characterized in that in step seven, after the door is closed, the door module control unit (4) sends a closing success signal (D5) to the infotainment system (7) ), the infotainment system (IVI) immediately sends a success prompt signal (L2) to the display screen through the LVDS video line after receiving the closing success signal (D5), and the display screen prompts that the door has been closed.