MPV vehicle door anti-pinch control system and method and MPV vehicle

Abstract

The invention discloses an MPV vehicle door anti-pinch control system and method and an MPV vehicle, and belongs to the technical field of vehicle door anti-pinch. The MPV vehicle door anti-pinch control system comprises an infrared sensor module which is arranged on an instrument panel assembly in the vehicle and is used for detecting distance information of an object; the infrared sensor module is connected with an MCU control module used for judging whether an obstacle exists in a dangerous area or not according to the received door closing signal sent by the electric side sliding door controller and the distance information, sent by the infrared sensor module, of the object. According to the MPV vehicle door anti-pinch control system and method and the MPV vehicle, the distance change curve on the vehicle door closing path can be monitored in real time through the infrared sensor module, the human body and the swing door can be distinguished, and when an obstacle does not exist on the normal door closing curve, a signal is sent to the control system immediately, so that the vehicle door anti-pinch control system is started. Therefore, the anti-pinch function is realized.

Description

Technical Field

[0001] The invention discloses a door anti-pinch control system and method for an MPV vehicle and an MPV vehicle, belonging to the technical field of door anti-pinch. Background Art

[0002] With the rapid development of the automobile industry and the advancement of intelligent technology, the safety and comfort of automobiles have become the focus of consumers' attention. Among them, electric sliding doors are widely used in commercial vehicles, MPVs and other multi-functional models as a convenient way to open doors. However, during the closing process of the electric sliding door, the door panel is connected to the body by a connecting rod. There is a certain amount of moving space at the connecting rod support of the sliding door. The legs / feet are between the two connecting rods, and the legs / feet will be squeezed when the door is closed. Based on the current 8A anti-pinch current, there is obvious pain when being pinched, and children aged 5 to 10 years old (or younger) may be injured. How to distinguish between the human body and the swing door itself at the moment of closing the door, and be able to detect obstacles at the connecting rod to stop the door closing action to prevent passengers or other obstacles from being pinched has become a problem that MPV model manufacturers need to solve today.

[0003] To solve this problem, there are already some anti-pinch systems on the market that detect obstacles in dangerous areas during the door closing process and stop or reverse the movement of the door in time to avoid pinching passengers. However, they are relatively poor in detection accuracy, response speed and stability. Summary of the invention

[0004] In view of the defects of the prior art, the present invention proposes a door anti-pinch control system, method and MPV car for an MPV model, which solves the problems of poor detection accuracy, response speed and stability of the current anti-pinch system.

[0005] The technical solution of the present invention is as follows:

[0006] According to a first aspect of an embodiment of the present invention, there is provided an anti-pinch control system for a door of an MPV vehicle, comprising an infrared sensor module for detecting distance information of an object, which is arranged on an instrument panel assembly inside a vehicle, and an MCU control module for judging whether there is an obstacle in a dangerous area based on a door closing signal sent by a power sliding door controller and distance information of the object sent by the infrared sensor module.

[0007] Preferably, the dangerous area includes:

[0008] The first area is the entire area from 30 cm above the side sliding door guard plate and the inner frame of the vehicle to the ground;

[0009] The second area and the third area are triangular areas adjacent to the first area above and below, and the triangular area is a 20 cm gap area between the vehicle side sliding door and the two connecting rods;

[0010] The fourth area is the connecting rod area close to the door frame when the vehicle side sliding door is closed;

[0011] The fifth area is the squeezing area formed 30cm between the door side guard plate and the door frame when the vehicle's side sliding door is closed.

[0012] According to a second aspect of an embodiment of the present invention, a door anti-pinch control method for an MPV model is provided, which is applied to the door anti-pinch system for the MPV model described in the first aspect, comprising:

[0013] Step S1, when the electric side sliding door controller receives a door closing signal, the electric side sliding door controller starts to execute the door closing action and sends the current state of the electric door and the opening and closing angle of the electric side sliding door to the MCU control module;

[0014] Step S2, after receiving the information of the current state of the electric door and the opening and closing angle of the door, the MCU control module executes the dirt detection strategy and sends a dirt detection instruction to the infrared sensor module to determine whether the sensor is blocked by dirt;

[0015] Step S3, if not, execute the anti-pinch function strategy and send an anti-pinch detection instruction to the infrared sensor module and determine whether an obstacle is detected. If so, send a stop closing request to the electric sliding door controller, and the electric sliding door controller executes the stop closing action.

[0016] Preferably, executing the dirt detection strategy and sending a dirt detection instruction to the infrared sensor module to determine whether the sensor is blocked by dirt includes:

[0017] The MCU control module sends a dirt detection instruction to the infrared sensor module, and the infrared sensor module transmits distance data to the MCU control module in a period of 10ms. The MCU control module performs a filtering algorithm according to the current distance and analyzes the distance data sent by at least 10 infrared sensor modules to determine whether the current sensor data is less than 10cm:

[0018] Yes, the infrared sensor module is blocked by dirt, and the projection light flashes at a period of 200ms to give a prompt;

[0019] No, the infrared sensor module is not blocked by dirt and proceed to the next step.

[0020] Preferably, the step of executing the anti-pinch function strategy and sending an anti-pinch detection instruction to the infrared sensor module and determining whether an obstacle is detected includes:

[0021] The MCU control module sends an anti-pinch detection instruction to the infrared sensor module, and the infrared sensor module transmits distance data to the MCU control module in a period of 10ms. The MCU control module obtains the opening and closing angle of the electric sliding door and determines whether it is less than the calibrated sliding door closing angle threshold:

[0022] Yes, execute the first anti-pinch judgment strategy;

[0023] No, execute the second anti-pinch judgment strategy.

[0024] Preferably, the first anti-pinch judgment strategy includes:

[0025] Obtaining a sensor detection distance difference value according to the sensor detection distance value sent by the infrared sensor module and the sensor detection initial door guard plate distance value;

[0026] Determine whether the sensor detection distance difference is greater than the sensor detection distance difference threshold:

[0027] If yes, it is currently detected that there is an obstacle in the dangerous area, and a stop door closing request is sent to the electric sliding door controller;

[0028] No, repeat the judgment.

[0029] Preferably, the second anti-pinch judgment strategy includes:

[0030] Obtaining a sensor detection distance difference value according to the sensor detection distance value sent by the infrared sensor module and the initial ground reference distance value detected by the sensor;

[0031] Determine whether the sensor detection distance difference is greater than the sensor detection distance difference threshold:

[0032] If yes, it is currently detected that there is an obstacle in the dangerous area, and a stop door closing request is sent to the electric sliding door controller;

[0033] No, repeat the judgment.

[0034] According to a third aspect of an embodiment of the present invention, there is provided an MPV vehicle, comprising an MPV vehicle body and the door anti-pinch system of the MPV model described in the first aspect.

[0035] The beneficial effects of the present invention are:

[0036] The present invention provides a door anti-pinch control system and method for an MPV vehicle, and an MPV vehicle. The infrared sensor module can monitor the distance change curve on the door closing path in real time, and can distinguish between a human body and a swing door itself. When an obstacle is not on the normal door closing curve, a signal is immediately sent to the control system, thereby controlling the door to stop or reverse, thereby realizing the anti-pinch function.

[0037] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The figure is a schematic block diagram of a door anti-pinch control system for an MPV vehicle according to an exemplary embodiment.

[0039] Figure 2 The figure is a schematic diagram of a dangerous area in a door anti-pinch control system of an MPV vehicle according to an exemplary embodiment.

[0040] Figure 3 The figure is a flow chart of a door anti-pinch control method for an MPV vehicle according to an exemplary embodiment.

[0041] Figure 4 The invention discloses a door anti-pinch control method for an MPV vehicle according to an exemplary embodiment, in which an infrared sensor module forms a calibration curve diagram through sampling time and detected distance value. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Embodiment 1: Figure 1The present invention is a schematic block diagram of the structure of a door anti-pinch control system for an MPV vehicle according to an exemplary embodiment, including an infrared sensor module installed on an instrument panel assembly inside a car for detecting distance information of an object, the infrared sensor module and an MCU control module for judging whether there is an obstacle in a dangerous area based on a door closing signal sent by an electric sliding door controller and distance information of the object sent by the infrared sensor module.

[0046] The infrared sensor module is installed at a position where it can detect both the lowest position of the vehicle's side sliding door and the dangerous area, and the distance between the sensor and the lowest position of the vehicle's side sliding door is the initial ground reference distance value detected by the ground reference sensor.

[0047] Dangerous areas such as Figure 2 As shown, including:

[0048] The first area ① is the entire area from 30 cm above the side sliding door guard plate and the inner frame of the vehicle to the ground;

[0049] The second area ② and the third area ③ are triangular areas adjacent to the first area above and below, and the triangular area is the 20cm gap area between the vehicle side sliding door and the two connecting rods;

[0050] The fourth area ④ is the connecting rod area close to the door frame when the vehicle side sliding door is closed;

[0051] The fifth area ⑤ is a squeeze area formed 30 cm between the door side guard plate and the door frame when the vehicle's side sliding door is closed.

[0052] Embodiment 2:

[0053] The embodiment of the present application provides a door anti-pinch control method for an MPV vehicle, such as Figure 3 As shown, the specific steps are as follows:

[0054] Step S1: When the electric sliding door controller receives the door closing signal, the electric sliding door controller starts to execute the door closing action and sends the current state of the electric door and the opening and closing angle of the electric sliding door to the MCU control module, wherein:

[0055] Before the above steps, the infrared sensor forms a calibration curve through the sampling time and the detected distance value. The infrared sensor detects the closing action of the electric sliding door when there is no obstacle, and projects the distance values ​​of the three stages to the ground, the connecting rod and the swing door during the closing process, and the door panel after the closing is completed as the calibration curve, such as Figure 4 As shown, the MCU control module stores the calibration curve in the program, and at the same time determines the sliding door closing angle threshold, sensor detection distance value, sensor detection initial ground reference distance value, sensor detection distance difference threshold and sensor detection initial door guard plate distance value through the above calibration curve.

[0056] Step S2: After receiving the information about the current state of the electric door and the opening and closing angle of the door, the MCU control module executes the dirt detection strategy and sends a dirt detection instruction to the infrared sensor module to determine whether the sensor is blocked by dirt, wherein:

[0057] The specific contents of executing the dirt detection strategy and sending the dirt detection instruction to the infrared sensor module to determine whether the sensor is blocked by dirt are as follows:

[0058] The MCU control module sends a dirt detection command to the infrared sensor module. The infrared sensor module transmits distance data to the MCU control module in a 10ms cycle. The MCU control module performs a filtering algorithm based on the current distance and analyzes the distance data sent by at least 10 infrared sensor modules to determine whether the current sensor data is less than 10cm:

[0059] Yes, the infrared sensor module is blocked by dirt, and the projection light flashes at a period of 200ms to indicate the situation.

[0060] No, the infrared sensor module is not blocked by dirt and proceed to the next step.

[0061] Step S3: If not, execute the anti-pinch function strategy and send an anti-pinch detection instruction to the infrared sensor module and determine whether an obstacle is detected. If yes, send a stop door closing request to the electric sliding door controller, and the electric sliding door controller executes the stop door closing action, wherein:

[0062] The above-mentioned execution of the anti-pinch function strategy and sending the anti-pinch detection command to the infrared sensor module and judging whether an obstacle is detected include:

[0063] The MCU control module sends an anti-pinch detection command to the infrared sensor module. The infrared sensor module transmits distance data to the MCU control module at a cycle of 10ms. The MCU control module obtains the opening and closing angle of the electric sliding door and determines whether it is less than the calibrated sliding door closing angle threshold:

[0064] Yes, execute the first anti-pinch judgment strategy;

[0065] No, execute the second anti-pinch judgment strategy.

[0066] The first anti-pinch judgment strategy includes:

[0067] Obtaining a sensor detection distance difference value according to the sensor detection distance value sent by the infrared sensor module and the sensor detection initial door guard plate distance value;

[0068] Determine whether the sensor detection distance difference is greater than the sensor detection distance difference threshold:

[0069] If yes, it is currently detected that there is an obstacle in the dangerous area, and a stop door closing request is sent to the electric sliding door controller;

[0070] No, repeat the judgment.

[0071] The second anti-pinch judgment strategy includes:

[0072] Obtaining a sensor detection distance difference value according to the sensor detection distance value sent by the infrared sensor module and the initial ground reference distance value detected by the sensor;

[0073] Determine whether the sensor detection distance difference is greater than the sensor detection distance difference threshold:

[0074] If yes, it is currently detected that there is an obstacle in the dangerous area, and a stop door closing request is sent to the electric sliding door controller;

[0075] No, repeat the judgment.

[0076] When the MCU control module detects that there is no obstacle, it periodically reports the obstacle-free signal in the current detection area. When it detects that the current electric sliding door is in the fully closed or open state, it is necessary to turn off the detection function and anti-pinch detection function of the infrared sensor in order to reduce the power consumption of the product.

[0077] Embodiment three:

[0078] An MPV vehicle provided in an embodiment of the present application includes an MPV vehicle body and the door anti-pinch system of the MPV model described in Example 1.

[0079] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A door anti-pinch control system for an MPV vehicle, characterized in that: The invention comprises an infrared sensor module arranged on a dashboard assembly in a car for detecting distance information of an object, and an MCU control module for judging whether there is an obstacle in a dangerous area according to a door closing signal sent by an electric sliding door controller and distance information of the object sent by the infrared sensor module.

2. The door anti-pinch control system of an MPV model according to claim 1, characterized in that: The hazardous areas include: The first area is the entire area from 30 cm above the side sliding door guard plate and the inner frame of the vehicle to the ground; The second area and the third area are triangular areas adjacent to the first area above and below, and the triangular area is a 20 cm gap area between the vehicle side sliding door and the two connecting rods; The fourth area is the connecting rod area close to the door frame when the vehicle side sliding door is closed; The fifth area is the squeezing area formed 30cm between the door side guard plate and the door frame when the vehicle's side sliding door is closed.

3. A door anti-pinch control method for an MPV vehicle, applied to the door anti-pinch system for an MPV vehicle according to claim 1 or 2, characterized in that: include: Step S1, when the electric side sliding door controller receives a door closing signal, the electric side sliding door controller starts to execute the door closing action and sends the current state of the electric door and the opening and closing angle of the electric side sliding door to the MCU control module; Step S2, after receiving the information of the current state of the electric door and the opening and closing angle of the door, the MCU control module executes the dirt detection strategy and sends a dirt detection instruction to the infrared sensor module to determine whether the sensor is blocked by dirt; Step S3, if not, execute the anti-pinch function strategy and send an anti-pinch detection instruction to the infrared sensor module and determine whether an obstacle is detected. If so, send a stop closing request to the electric sliding door controller, and the electric sliding door controller executes the stop closing action.

4. The door anti-pinch control method for an MPV vehicle according to claim 3, characterized in that: The executing of the dirt detection strategy and sending a dirt detection instruction to the infrared sensor module to determine whether the sensor is blocked by dirt includes: The MCU control module sends a dirt detection instruction to the infrared sensor module, and the infrared sensor module transmits distance data to the MCU control module in a period of 10ms. The MCU control module performs a filtering algorithm according to the current distance and analyzes the distance data sent by at least 10 infrared sensor modules to determine whether the current sensor data is less than 10cm: Yes, the infrared sensor module is blocked by dirt, and the projection light flashes at a period of 200ms to give a prompt; No, the infrared sensor module is not blocked by dirt and proceed to the next step.

5. The door anti-pinch control method for an MPV vehicle according to claim 3, characterized in that: The method of executing the anti-pinch function strategy and sending an anti-pinch detection instruction to the infrared sensor module and determining whether an obstacle is detected includes: The MCU control module sends an anti-pinch detection instruction to the infrared sensor module, and the infrared sensor module transmits distance data to the MCU control module in a period of 10ms. The MCU control module obtains the opening and closing angle of the electric sliding door and determines whether it is less than the calibrated sliding door closing angle threshold: Yes, execute the first anti-pinch judgment strategy; No, execute the second anti-pinch judgment strategy.

6. The door anti-pinch control method for an MPV vehicle according to claim 5, characterized in that: The first anti-pinch judgment strategy includes: Obtaining a sensor detection distance difference value according to the sensor detection distance value sent by the infrared sensor module and the sensor detection initial door guard plate distance value; Determine whether the sensor detection distance difference is greater than the sensor detection distance difference threshold: If yes, it is currently detected that there is an obstacle in the dangerous area, and a stop door closing request is sent to the electric sliding door controller; No, repeat the judgment.

7. The door anti-pinch control method for an MPV vehicle according to claim 5, characterized in that: The second anti-pinch judgment strategy includes: Obtaining a sensor detection distance difference value according to the sensor detection distance value sent by the infrared sensor module and the initial ground reference distance value detected by the sensor; Determine whether the sensor detection distance difference is greater than the sensor detection distance difference threshold: If yes, it is currently detected that there is an obstacle in the dangerous area, and a stop door closing request is sent to the electric sliding door controller; No, repeat the judgment.

8. An MPV vehicle, characterized in that: The invention comprises an MPV vehicle body and the door anti-pinch system of the MPV model as claimed in claim 1 or 2.

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