Vehicle door control device with anti-pinch function, vehicle door anti-pinch control method and vehicle

Abstract

This invention belongs to the field of automotive intelligent anti-pinch technology, and discloses a door control device and method with anti-pinch function, as well as a vehicle. The door control device includes a drive motor, a control component, a door position detection component, an infrared detection component, and an electromagnetic locking component. The drive motor drives the door, and the control component controls the drive motor to rotate clockwise, counterclockwise, or stop. The control component includes a sampling circuit for collecting the voltage and current of the drive motor. The door position detection component detects the door position; the infrared detection component detects the presence of an object; and the electromagnetic locking component locks the door. This design allows for different methods of determining the presence of an object depending on the door's position, improving accuracy and ensuring vehicle safety. The door anti-pinch control method improves the accuracy of door anti-pinch measures. This vehicle effectively prevents injuries from door-pinch situations, ensuring safety.

Description

Technical Field

[0001] This invention relates to the field of intelligent anti-pinch technology for automobiles, and more particularly to a door control device with anti-pinch function, a door anti-pinch control method, and a vehicle. Background Technology

[0002] Cars are a common means of transportation, and while they bring us convenience, they also bring some safety hazards. For example, when closing a car door, a part of your body may be unintentionally placed in the trajectory of the door's movement, resulting in injury.

[0003] In the existing technology, common door control devices with anti-pinch function are relatively simple. They usually only use a single sensing element to detect whether there is an object in the door's running trajectory, such as using an infrared sensor. However, this setting usually has the problem of not being able to detect objects, which still poses a safety hazard.

[0004] Therefore, there is an urgent need for a door control device with anti-pinch function, a door anti-pinch control method, and a vehicle to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a door control device with anti-pinch function, a door anti-pinch control method, and a vehicle. This door control device with anti-pinch function can effectively prevent pinching when the door is in different positions, ensuring the safety of the user.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A door control device with anti-pinch function includes:

[0008] A drive motor is installed in the vehicle body and is connected to the door drive mechanism to open and close the door.

[0009] The control component is electrically connected to the drive motor and can control the drive motor to rotate clockwise, counterclockwise, or stop. The control component includes a sampling circuit for acquiring the voltage and current of the drive motor.

[0010] A door position detection component is installed on a door or vehicle body and is electrically connected to a control component. The door position detection component is used to detect the position of the door.

[0011] An infrared detection component includes an infrared generator and an infrared receiver. One of the infrared generator and the infrared receiver is installed on the vehicle body, and the other is installed on the vehicle door. The infrared generator and the infrared receiver are compatible, and the infrared receiver is electrically connected to the control component.

[0012] An electromagnetic locking assembly, electrically connected to a control assembly, is used to lock the vehicle door.

[0013] Preferably, the door is provided with a first bracket, and the vehicle body is provided with a second bracket. One of the first and second brackets is provided with a bolt shaft, which is rotatably connected to the other of the first and second brackets. A worm gear is connected to the output end of the drive motor, and a helical gear is connected to the bolt shaft. The worm gear meshes with the helical gear. The drive motor drives the bolt shaft to rotate through the worm gear and the helical gear to open or close the door. The end face of the helical gear has multiple wedge-shaped grooves, which are used to engage with the electromagnetic locking assembly to lock the door.

[0014] Preferably, the electromagnetic locking assembly includes an electromagnetic locker, a control component, and a drive component. The electromagnetic locker includes a connector, a magnetic component, and a locking component. The connector is vertically mounted on the second bracket. Both the magnetic component and the locking component are mounted on the connector. The magnetic component generates electromagnetic energy. The locking component can engage with the wedge-shaped groove of the helical gear under the drive of the electromagnetic energy to limit the rotation of the helical gear. The control component is electrically connected to the control assembly and to the electromagnetic locker. The control component controls the opening or closing of the electromagnetic locker. The drive component supplies power to the electromagnetic locker.

[0015] Preferably, the drive motor is equipped with a Hall sensor, and the Hall sensor is electrically connected to the control component.

[0016] Preferably, the control component includes a microcontroller, which is mounted on the vehicle body.

[0017] Preferably, the door control device with anti-pinch function also includes an electromagnetic induction component, which includes an electromagnetic sensor and a permanent magnet. One of the electromagnetic sensor and the permanent magnet is installed in the vehicle body, and the other is installed in the door. The electromagnetic sensor is electrically connected to the control component. The electromagnetic sensor can determine whether the door is completely closed by collecting the magnitude of the magnetic force of the permanent magnet.

[0018] Preferably, the door control device with anti-pinch function also includes a temperature sensor, which is electrically connected to the control component.

[0019] The present invention also adopts the following technical solutions:

[0020] A door anti-pinch control method is used to control the aforementioned door control device with anti-pinch function. The door anti-pinch control method includes the following steps:

[0021] S10. Determine if the car door is in the closing process. If so, execute S20.

[0022] S20. Determine the position of the car door and whether there is an object between the car door and the vehicle body; if so, proceed to S30. S20 includes: determining the anti-pinch zone of the car door based on the car door position detection component. The anti-pinch zones include a first anti-pinch zone, a second anti-pinch zone, and a third anti-pinch zone. If the car door is in the first anti-pinch zone, determine whether there is an object in the first anti-pinch zone by comparing the current of the drive motor with a current threshold and the rotational speed of the drive motor with a rotational speed threshold. If there is an object in the first anti-pinch zone, proceed to S30. If the car door is in the second anti-pinch zone, determine whether there is an object in the second anti-pinch zone by comparing the current of the drive motor with a current threshold and by checking whether the infrared detection component detects an object in the second anti-pinch zone. If there is an object in the second anti-pinch zone, proceed to S30. If the car door is in the third anti-pinch zone, determine whether there is an object in the third anti-pinch zone by comparing the current of the drive motor with a current threshold. If there is an object in the third anti-pinch zone, proceed to S30.

[0023] S30, Electromagnetic locking assembly prevents the door from closing.

[0024] Preferably, determining whether there is an object in the first anti-pinch area by comparing the current of the drive motor with a current threshold and the speed of the drive motor with a speed threshold includes: if the current of the drive motor exceeds the current threshold and the speed of the drive motor is lower than the speed threshold, then it is determined that there is an object in the first anti-pinch area.

[0025] The method of determining whether there is an object in the second anti-pinch area by comparing the current of the drive motor with the current threshold and whether the infrared detection component detects an object in the second anti-pinch area includes: if the current of the drive motor exceeds the current threshold and the infrared detection component detects an object in the second anti-pinch area, then it is determined that there is an object in the second anti-pinch area.

[0026] Determining whether there is an object in the third anti-pinch zone by comparing the current of the drive motor with the current threshold includes: if the current of the drive motor exceeds the current threshold, it is determined that there is an object in the third anti-pinch zone.

[0027] The present invention also adopts the following technical solutions:

[0028] The vehicle includes a body and doors, and also includes the aforementioned door control device with anti-pinch function.

[0029] The beneficial effects of this invention are:

[0030] This invention discloses a vehicle door control device with anti-pinch function. The device includes a drive motor, a control component, a door position detection component, an infrared detection component, and an electromagnetic locking component. The drive motor drives the door to open and close. The control component is electrically connected to the drive motor and can control the drive motor to rotate clockwise, counterclockwise, or stop. The control component includes a sampling circuit for collecting the voltage and current of the drive motor. The door position detection component detects the door position and is electrically connected to the control component. The infrared detection component includes an infrared generator and an infrared receiver, which are respectively disposed on the vehicle body and the door, and the infrared receiver is electrically connected to the control component. The electromagnetic locking component is electrically connected to the control component and locks the door. This design allows the door position detection component to detect the door position and uses different methods to determine the presence of an object depending on the door's position, improving accuracy and ensuring vehicle safety.

[0031] The present invention also discloses a door anti-pinch control method with a door control device having an anti-pinch function, which can improve the accuracy of door anti-pinch and ensure the safety of personnel using the vehicle.

[0032] The present invention also provides a vehicle, which includes a door and a body, and also includes the aforementioned door control device with anti-pinch function, which can effectively prevent people from being pinched by the door and ensure safe use. Attached Figure Description

[0033] Figure 1 This is a partial structural schematic diagram of a vehicle according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the electromagnetic locking device according to an embodiment of the present invention;

[0035] Figure 3 This is a flowchart illustrating the working principle of the anti-pinch mechanism in an embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram of the electrical connection principle according to an embodiment of the present invention;

[0037] Figure 5 This is a flowchart illustrating the working principle of the diagnostic process in an embodiment of the present invention.

[0038] In the picture:

[0039] 2. Door; 201. First bracket; 202. Bolt axle; 3. Vehicle body; 301. Second bracket;

[0040] 10. Drive motor; 11. Worm gear; 12. Helical gear; 121. Wedge groove;

[0041] 21. Angle sensor;

[0042] 30. Infrared detection component; 31. Infrared generator; 32. Infrared receiver;

[0043] 41. Electromagnetic locking device; 411. Connecting component; 412. Locking component;

[0044] 51. Electromagnetic sensor; 52. Permanent magnet. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0046] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0049] With the development of technology, more and more people are using cars for travel. While vehicles bring many conveniences, accidents can easily occur where people are pinched by car doors if one is not careful. Current technology typically uses simple sensors to detect whether an object is within the door's travel path to prevent pinching. However, this method usually has a limited sensing range, poor reliability, and poses safety hazards.

[0050] Accordingly, this embodiment provides a door control device with anti-pinch function.

[0051] like Figure 1As shown, the door control device with anti-pinch function provided in this embodiment includes a drive motor 10, a control component, a door position detection component, an infrared detection component 30, and an electromagnetic locking component. The drive motor 10 is mounted on the vehicle body 3 and is connected to the door 2. The drive motor 10 drives the door 2 to open and close. The control component is electrically connected to the drive motor 10 and can control the drive motor 10 to rotate clockwise, counterclockwise, or stop. The control component includes a sampling circuit for collecting the voltage and current of the drive motor 10. The door position detection component is installed on the door 2 and is electrically connected to the control component. The door position detection component is used to detect the position of the door 2. The infrared detection component 30 includes an infrared generator 31 and an infrared receiver 32. One of the infrared generator 31 and the infrared receiver 32 is installed on the vehicle body 3 and the other is installed on the door 2. The infrared generator 31 and the infrared receiver 32 are compatible and the infrared receiver 32 is electrically connected to the control component. The electromagnetic locking component is electrically connected to the control component and is used to lock the door 2. Specifically, in this embodiment, the fully open position of the car door 2 is designated as point A, the position where the car door 2 can trap most of the human body is designated as point B, the position where the car door 2 is close to the sealing strip of the vehicle body 3 (e.g., 5cm) is designated as point C, the point where the car door 2 just contacts the sealing strip is designated as point D, and the point where the car door 2 is completely attached to the vehicle body 3 is designated as point E. The area between A and B is the non-pinch zone, where no injury to the human body will occur. The area between B and C is the first anti-pinch zone, where accidents involving trapping the human body are more likely to occur. The area between C and D is the second anti-pinch zone, where it is more likely to trap the arm or other parts of the body. The area between D and E is the third anti-pinch zone, where it is more likely to trap the finger or other parts of the body.In the first anti-pinch zone, if the door 2 traps an object, it will cause the drive motor 10 to stall. The sampling circuit of the control component detects an increase in the current of the drive motor 10 and a decrease in its speed. Based on this, the control component determines that an object exists in the first anti-pinch zone and controls the electromagnetic locking component to lock the door 2, preventing it from closing further and thus avoiding further trapping of the object. In the second anti-pinch zone, if the door 2 traps an object, it will cause the drive motor 10 to stall. The sampling circuit of the control component detects an increase in the current of the drive motor 10. Since the door 2 is closer to the vehicle body 3, it needs to close more slowly. The drive motor 10's speed decreases due to speed adjustment. Using the drive motor's speed for judgment might lead to incorrect results. In this case, an infrared detection component 30 is introduced. In this embodiment, the infrared detection component 30 includes an infrared generator 31 and an infrared receiver 32, with the infrared generator 31 located on the door 2. Infrared receiver 32 is installed on the vehicle body 3. The two work together to detect objects in the second anti-pinch zone. The control component controls the drive motor 10 based on the current of the drive motor 10 and the feedback information from the infrared detection component 30. This effectively prevents the door 2 from continuing to clamp when an object appears in the second anti-pinch zone, ensuring safety. In the third anti-pinch zone, the resistance to the drive motor 10 increases as the door 2 begins to press against the sealing strip. As a result, the current of the drive motor 10 increases. When an object appears in the third anti-pinch zone, the resistance to the door 2 is greater than when it is only blocked by the sealing strip. This causes the sampling circuit of the control component to collect a larger current value of the drive motor 10. The control component controls the drive motor 10 based on whether the current value exceeds the current threshold. If the current threshold is exceeded, it indicates that an object exists in the third anti-pinch zone. The control component will then control the electromagnetic locking component to lock the door 2, preventing the door 2 from closing and avoiding injury to the user or damage to the door 2 due to being caught in a hard object. This door control device with anti-pinch function can adopt corresponding judgment strategies for different door positions 2, resulting in more accurate judgment and ensuring that pinching accidents do not occur, thus ensuring personnel safety and preventing damage to the vehicle from other objects. Optionally, in other embodiments, the infrared generator 31 is disposed on the vehicle body 3, and the infrared receiver 32 is disposed on the door 2. In this embodiment, the door position detection component is an angle sensor 21.

[0052] Optionally, in this embodiment, the control component controls the electromagnetic locking component to work. After the door 2 stops closing, the control component controls the electromagnetic locking component to reset and controls the drive motor 10 to reverse. The reverse drive motor 10 drives the door 2 to retract, which can further ensure safety in use.

[0053] Furthermore, such as Figure 2 As shown, the car door 2 is provided with a first bracket 201, and the car body 3 is provided with a second bracket 301. One of the first bracket 201 and the second bracket 301 is provided with a bolt shaft 202, which is rotatably connected to the other of the first bracket 201 and the second bracket 301. The output end of the drive motor 10 is connected to a worm gear 11, and a helical gear 12 is connected to the bolt shaft 202. The worm gear 11 meshes with the helical gear 12. The drive motor 10 drives the bolt shaft 202 to rotate through the worm gear 11 and the helical gear 12 to open or close the car door 2. The end face of the helical gear 12 has multiple wedge-shaped grooves 121, which are used to engage with the electromagnetic locking assembly to lock the car door 2. Specifically, in this embodiment, the bolt shaft 202 is provided on the first bracket 201, and the bolt shaft 202 is rotatably connected to the second bracket 301. The use of the worm gear 11 and the helical gear 12 for transmission enables the drive motor 10 to have good smoothness when controlling the opening and closing of the car door 2. Optionally, in this embodiment, the helical gear 12 has multiple wedge-shaped grooves 121 on its end face arranged circumferentially along the helical gear, which can be inserted and engaged with the electromagnetic locking assembly to restrict the movement of the door 2. Specifically, in this embodiment, the angle sensor 21 is disposed on the bolt shaft 202.

[0054] Furthermore, such as Figure 2As shown, the electromagnetic locking assembly includes an electromagnetic locker 41, a control component, and a drive component. The electromagnetic locker 41 includes a connector 411, a magnetic component, and a locking component 412. The connector 411 is vertically mounted on the second bracket 301. The magnetic component and the locking component 412 are both mounted on the connector 411. The magnetic component generates electromagnetic energy. The locking component 412 can engage with the wedge groove 121 of the helical gear 12 under the drive of electromagnetic energy to limit the rotation of the helical gear 12. The control component is electrically connected to the control assembly and to the electromagnetic locker. The control component controls the opening or closing of the electromagnetic locker. The drive component supplies power to the electromagnetic locker. Specifically, in this embodiment, when the drive motor 10 rotates, it drives the worm gear 11 to rotate. The worm gear 11 meshes with the helical gear 12, which in turn drives the helical gear 12 to rotate. The helical gear 12 is connected to the bolt shaft 202, so that the bolt shaft 202 rotates with the helical gear 12. Since the bolt shaft 202 is connected to the first bracket 201, and the first bracket 201 is connected to the car door 2, the purpose of opening and closing the car door 2 is achieved. The magnetic component of the electromagnetic lock 41 can generate electromagnetic energy under the control of the control component. The electromagnetic energy causes the locking component 412 to engage with the wedge groove 121 of the helical gear 12, so that the helical gear 12 stops rotating, thereby restricting the movement of the car door 2. When the magnetic component no longer generates electromagnetic energy, the locking component 412 separates from the wedge groove 121 of the helical gear 12, the car door 2 is unlocked, and the drive motor 10 can continue to drive the movement of the car door 2. The control element is electrically connected to the control assembly and can control the opening or closing of the electromagnetic locking assembly according to the instructions issued by the control assembly. This configuration makes the door 2 react quickly, efficiently, and sensitively, minimizing the risk of injury to people or the vehicle. In this embodiment, the control element is a relay, and the drive element is a motor. Both relays and motors are commonly used components in the prior art, and their structures and principles will not be described in detail here.

[0055] Optionally, this embodiment also involves performance diagnosis of the electromagnetic locking component, specifically including locking diagnosis and release diagnosis. During locking diagnosis, when the anti-pinch command is triggered, the system monitors whether the speed of the door 2 drops suddenly. If so, it indicates that the electromagnetic locking component is functioning correctly; otherwise, a fault in the electromagnetic locking component is reported, and the control component controls the drive motor 10 to reverse and move the door 2 back, preventing injury to the person or vehicle due to anti-pinch failure. During release diagnosis, after the locking command stops, the control component controls the drive motor 10 to reverse and move the door 2 back, detecting whether the door 2 has any speed. If so, it indicates that the electromagnetic locking component is functioning correctly; otherwise, a fault in the electromagnetic locking component is reported.

[0056] Furthermore, the drive motor 10 is equipped with a Hall sensor, and the Hall sensor is electrically connected to the control component. Specifically, in this embodiment, when the armature on the drive motor 10 passes the Hall sensor, it generates a pulse signal. The control component can calculate the number of Hall sensors that have rotated per unit time based on the pulse signal to obtain the speed of the door 2, and store the pulse signal. The door 2 has different Hall position information values ​​at different positions, which are compared with the position information read by the angle sensor 21 to ensure the accuracy of the door 2 position information.

[0057] Furthermore, the control components include a microcontroller, which is installed on the vehicle body 3. The microcontroller has the advantages of high integration, small size, light weight, and flexible use, and can avoid occupying too much space.

[0058] Furthermore, the door control device with anti-pinch function also includes an electromagnetic induction component, which includes an electromagnetic sensor 51 and a permanent magnet 52. One of the electromagnetic sensor 51 and the permanent magnet 52 is disposed on the vehicle body 3, and the other is disposed on the door 2. The electromagnetic sensor 51 and the permanent magnet 52 are compatible, and the electromagnetic sensor 51 is electrically connected to the control component. Specifically, in this embodiment, the permanent magnet 52 is disposed on the vehicle body 3, and the electromagnetic sensor 51 is disposed on the door 2. The electromagnetic sensor 51 and the permanent magnet 52 work together to determine whether the door 2 is closed properly by the magnitude of the magnetic force. If the door 2 is closed properly, it confirms that there are no foreign objects stuck between the door 2 and the vehicle body 3, further confirming safe use. Optionally, in other embodiments, the permanent magnet 52 is disposed on the door 2, and the electromagnetic sensor 51 is disposed on the vehicle body 3.

[0059] Optionally, such as Figure 4 and Figure 5 As shown, this embodiment also involves diagnosing whether the car door 2 is fully closed. Specifically, when the car door 2 is fully closed, the electromagnetic sensor 51 detects whether the magnetic force it senses is close to a set value. If it is, it indicates that the car door 2 is fully closed; otherwise, it reports that the car door 2 is not fully closed.

[0060] Furthermore, the door control device with anti-pinch function also includes a temperature sensor, which is electrically connected to the control component. Specifically, in this embodiment, since the performance of the drive motor 10 is greatly affected by temperature, setting a temperature sensor to collect the ambient temperature ensures the operating temperature of the drive motor 10. This temperature sensor can also serve as the basis for motor operation, anti-pinch current sampling compensation, and magnetic force acquisition compensation, ensuring the validity of the current and voltage information collected by the sampling circuit of the control component. Optionally, another reason for setting a temperature sensor is that the electromagnetic sensor 51 is greatly affected by the ambient temperature. The control component can compensate the current value fed back by the drive motor 10 based on the temperature value of the temperature sensor, making the anti-pinch function more accurate and effective.

[0061] Optionally, the door control device with anti-pinch function also includes a memory, which is electrically connected to the control component. Specifically, in this embodiment, the memory can store data, such as the voltage, current, position information collected by the Hall sensor, and speed of the drive motor 10 during the door 2 initialization process. This allows for comparison of real-time data with initialization data, which is beneficial for fault diagnosis.

[0062] Optionally, this embodiment also involves confirming the position information of the door 2. The position information of the door 2 corresponds to the position information detected by the Hall sensor and the position information value of the angle sensor 21 stored in the memory. Based on this, the position of the door 2 can be confirmed. If the information of the door 2 is incorrect, an error needs to be reported. Here, taking the diagnostic process when the door 2 is fully closed as an example, specifically, firstly, if the position information value detected by the Hall sensor is consistent with the position information of the angle sensor 21 when the door is fully closed, it can be considered that the position information of the door 2 is correct at this time; if the position information value detected by the Hall sensor is inconsistent with the position information of the angle sensor 21 when the door is fully closed, the actual position information value detected by the Hall sensor when the door is fully closed is compared with the position information value of the Hall sensor stored in the memory when the door 2 is fully closed. If the two are different, a Hall sensor fault is reported. If the two are the same, the information value of the angle sensor 21 when fully closed is compared with the information value of the angle sensor 21 when fully closed in the memory. If the two are different, an angle sensor 21 fault is reported.

[0063] like Figure 3 As shown, this embodiment also discloses a door anti-pinch control method for controlling the aforementioned door control device with anti-pinch function. The door anti-pinch control method includes the following steps:

[0064] S10. Determine if door 2 is in the closing process. If so, execute S20.

[0065] Optionally, it can be determined whether the door 2 is in the closing process by whether the door close button has been pressed, or by the angle information of the angle sensor 21. Specifically, if the angle information, i.e. the angle between the door 2 and the vehicle body 3, gradually decreases, it is determined that the door 2 is in the closing process.

[0066] S20. Determine the position of door 2 and whether there is an object between door 2 and vehicle body 3. If so, execute S30.

[0067] Specifically, in this process, it is necessary to determine whether the door 2 is in the first anti-pinch zone, the second anti-pinch zone, or the third anti-pinch zone, and then adopt different anti-pinch judgment strategies. In this embodiment, since the closing process of the door 2 is that the door 2 passes through the first anti-pinch zone, the second anti-pinch zone, and the third anti-pinch zone in sequence, it is first determined whether the door 2 is in the first anti-pinch zone. If the door 2 is not in the first anti-pinch zone, it is then determined whether the door 2 is in the second anti-pinch zone. If the door 2 is not in the second anti-pinch zone, it is then determined whether the door 2 is in the third anti-pinch zone. In other embodiments, different judgment orders may also be used, which will not be elaborated here.

[0068] S20 includes: determining the anti-pinch zone of the door 2 based on the door position detection component. The anti-pinch zone includes a first anti-pinch zone, a second anti-pinch zone, and a third anti-pinch zone. If the door 2 is in the first anti-pinch zone, it is determined whether there is an object in the first anti-pinch zone by comparing the current of the drive motor 10 with the current threshold and the rotation speed of the drive motor 10 with the rotation speed threshold. If there is an object in the first anti-pinch zone, S30 is executed.

[0069] Specifically, if a person's body or a large object is located in the first anti-pinch zone, the door 2 will continue to clamp the body between the door 2 and the vehicle body 3, which may cause injury to the person or damage to the vehicle. Therefore, the anti-pinch function needs to be triggered at this time.

[0070] Specifically, during the closing process of the door 2 driven by the drive motor 10, to ensure safety, the drive motor 10 usually operates relatively stably. Correspondingly, the current and speed of the drive motor 10 are relatively stable. However, when the door 2 comes into contact with an external object, the door 2 stops moving, causing the drive motor 10 to stall. This stalling of the drive motor 10 results in a change in its current value, which can be used as a criterion for determining whether the door 2 has come into contact with an object. However, the current value of the drive motor 10 is also affected by other factors, such as ambient temperature. Relying solely on the current of the drive motor 10 may not be sufficient to prove that the door 2 has come into contact with an object. Therefore, a change in the speed of the drive motor 10 is introduced to determine whether the door 2 has come into contact with an object.

[0071] S20 also includes: if the door is in the second anti-pinch zone, then by comparing the current of the drive motor with the current threshold and whether the infrared detection component detects an object in the second anti-pinch zone, it is determined whether there is an object in the second anti-pinch zone; if there is an object in the second anti-pinch zone, then S30 is executed.

[0072] Specifically, if a person's arm or a small object appears in the second anti-pinch zone, the door 2 will continue to clamp the arm or small object between the door 2 and the vehicle body 3, which may cause injury to the arm or damage to the vehicle. Therefore, the anti-pinch function needs to be triggered at this time.

[0073] The principle of using the current of the drive motor 10 as the criterion for judgment here is the same as the principle of the anti-pinch strategy in the first anti-pinch area, and will not be elaborated here. In the second anti-pinch area, since the door 2 is about to be completely closed, in this embodiment, the closing strategy of the door 2 itself is that the closing speed decreases when the door 2 is about to close, that is, the rotation speed of the drive motor 10 will change at this time. If the rotation speed of the drive motor 10 is used again, there may be a deviation. Therefore, an infrared detection component 30 is introduced to detect objects in the second anti-pinch area. When the infrared detection component 30 detects an object, the anti-pinch is triggered.

[0074] S20 also includes: if the door is in the third anti-pinch zone, then the current of the drive motor is compared with the current threshold to determine whether there is an object in the third anti-pinch zone; if there is an object in the third anti-pinch zone, then S30 is executed.

[0075] Specifically, if a person's finger or a smaller object appears in the third anti-pinch zone, the door 2 will continue to clamp, causing the person's finger or the smaller object to be clamped between the door 2 and the vehicle body 3. This could result in damage to the person's finger or damage to the vehicle from the smaller object. Therefore, the anti-pinch function needs to be triggered at this time.

[0076] In the third anti-pinch zone, the door 2 begins to squeeze the sealing strip, increasing the resistance to the drive motor 10 and thus increasing the current. When an object appears in the third anti-pinch zone, the resistance to the door 2 will be greater than when it only experiences resistance from the sealing strip. Consequently, the current value of the drive motor 10 collected by the sampling circuit of the control component will change. The control component compares this current value with the current threshold under normal conditions to determine whether there is an object in the third anti-pinch zone. Then, the control component controls the door 2 to stop closing, ensuring the safety of personnel and preventing damage to the vehicle.

[0077] S30, The electromagnetic locking assembly prevents door 2 from closing.

[0078] Specifically, after the control component controls the electromagnetic locking component to prevent the door 2 from closing, the control component then controls the drive motor 10 to reverse, thereby driving the door 2 to move back, ensuring safe use.

[0079] Furthermore, determining whether there is an object in the first anti-pinch area by comparing the current of the drive motor 10 with the current threshold and the rotation speed of the drive motor 10 with the rotation speed threshold includes: if the current of the drive motor 10 exceeds the current threshold and the rotation speed of the drive motor 10 is lower than the rotation speed threshold, then it is determined that there is an object in the first anti-pinch area.

[0080] Specifically, when the drive motor 10 is stalled, a sudden increase in current will occur. If the current exceeds the current threshold during the operation of the door 2, the control component will consider that the drive motor 10 is stalled, and the operation of the door 2 may be obstructed, i.e., the door 2 has come into contact with an object or a person. The drive motor 10 drives the door 2 to close, and the speed of the drive motor 10 is directly proportional to the closing speed of the door 2. After the door 2 comes into contact with an object, the closing speed of the door 2 decreases, which will cause the speed of the drive motor 10 to decrease. When the speed of the drive motor 10 is lower than the speed threshold, the anti-pinch function is triggered to ensure safety. This setting uses both whether the current of the drive motor 10 exceeds the current threshold and whether the speed of the drive motor 10 is lower than the speed threshold as the judgment criteria, avoiding accidental situations caused by a single factor and ensuring the safety of personnel during vehicle use.

[0081] The method of determining whether there is an object in the second anti-pinch area by comparing the current of the drive motor 10 with the current threshold and whether the infrared detection component 30 detects an object in the second anti-pinch area includes: if the current of the drive motor 10 exceeds the current threshold and the infrared detection component 30 detects an object in the second anti-pinch area, then it is determined that there is an object in the second anti-pinch area.

[0082] Specifically, the principle of using the current of the drive motor 10 as the judgment criterion is the same as that of the anti-pinch strategy in the first anti-pinch area, and will not be elaborated here. Using the current of the drive motor 10 as the judgment criterion has a certain degree of randomness, and in the second anti-pinch area, the rotational speed of the drive motor 10 itself changes, making it unsuitable as a judgment criterion at this time. Therefore, an infrared detection component 30 is introduced. The infrared detection component 30 includes an infrared generator 31 and an infrared receiver 32. The infrared generator 31 is located on the door 2, and the infrared receiver 32 is located on the vehicle body 3, with the infrared generator 31 and infrared receiver 32 positioned opposite each other. When an object exists between them, the infrared receiver 32 cannot receive the infrared light emitted by the infrared generator 31, thus determining that an object exists between the door 2 and the vehicle body 3, triggering the anti-pinch mechanism. This setup also avoids accidental situations caused by a single factor, ensuring the safety of personnel during vehicle use.

[0083] Determining whether there is an object in the third anti-pinch area by comparing the current of the drive motor 10 with the current threshold includes: if the current of the drive motor 10 exceeds the current threshold, it is determined that there is an object in the third anti-pinch area.

[0084] Specifically, because the door 2 squeezes the sealing strip, the current of the drive motor 10 increases. If an object in the third anti-pinch area squeezes the door 2 together with the sealing strip, the current value of the drive motor 10 collected by the sampling circuit of the control component will be even greater. The control component will make a judgment based on whether the current value at this time exceeds the current threshold. If it exceeds the current threshold, it means that there is an object in the third anti-pinch area at this time, and the control component will control the electromagnetic locking component to lock the door 2.

[0085] Optionally, when the door 2 is in the non-anti-pinch zone, even if there is an object at the door 2, the object will not be trapped between the door 2 and the vehicle body 3, thus causing injury. Therefore, the anti-pinch operation is not performed at this time, which can save energy.

[0086] This embodiment also discloses a vehicle, which includes a door 2 and a vehicle body 3, and includes the aforementioned door control device with anti-pinch function. The vehicle can effectively prevent people or objects from being pinched by the door 2, and can prevent injury to people or the vehicle.

[0087] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A door control device with anti-pinch function, characterized in that, The vehicle door control device with the anti-pinch function comprises: a driving motor (10) arranged on a vehicle body (3), the driving motor (10) being in driving connection with a vehicle door (2), and the driving motor (10) driving the vehicle door (2) to open or close; a control assembly electrically connected with the driving motor (10), the control assembly being capable of controlling the driving motor (10) to rotate clockwise, rotate counterclockwise or stop, and the control assembly comprising a sampling circuit for collecting voltage and current of the driving motor (10); a vehicle door position detection assembly arranged on the vehicle door (2) or the vehicle body (3) and electrically connected with the control assembly, the vehicle door position detection assembly being used for detecting the position of the vehicle door (2); an infrared detection assembly (30) comprising an infrared generator (31) and an infrared receiver (32), one of the infrared generator (31) and the infrared receiver (32) being arranged on the vehicle body (3) and the other being arranged on the vehicle door (2), the infrared generator (31) and the infrared receiver (32) being matched with each other, and the infrared receiver (32) being electrically connected with the control assembly; an electromagnetic locking assembly electrically connected with the control assembly and used for locking the vehicle door (2); wherein the vehicle door (2) is provided with a first support (201), the vehicle body (3) is provided with a second support (301), one of the first support (201) and the second support (301) is provided with a bolt shaft (202), the bolt shaft (202) is in rotational connection with the other of the first support (201) and the second support (301), the driving motor (10) is connected with a worm (11) at an output end, the bolt shaft (202) is connected with a helical gear (12), the worm (11) is in meshing connection with the helical gear (12), the driving motor (10) drives the bolt shaft (202) to rotate through the worm (11) and the helical gear (12) to open or close the vehicle door (2), and an end surface of the helical gear (12) is provided with a plurality of wedge-shaped grooves (121) for plug-in cooperation with the electromagnetic locking assembly to lock the vehicle door (2).

2. The door control device with anti-pinch function according to claim 1, characterized in that, The electromagnetic locking assembly comprises an electromagnetic locker (41), a control member and a driving member, the electromagnetic locker (41) comprises a connecting member (411), a magnetic member (412) and a locking member (413), the connecting member (411) is arranged on the second support in the vertical direction, the magnetic member (412) and the locking member (413) are arranged on the connecting member (411), the magnetic member (412) is used for generating electromagnetic energy, and the locking member (413) can be inserted and matched with the wedge-shaped groove of the helical gear under the driving of the electromagnetic energy, so as to limit the rotation of the helical gear; the control member is electrically connected with the control assembly and the electromagnetic locker (41), the control member is used for controlling the opening or closing of the electromagnetic locker (41), and the driving member is used for supplying energy for the electromagnetic locker (41).

3. The door control device with anti-pinch function according to claim 1, characterized in that, The driving motor (10) is provided with a Hall sensor, and the Hall sensor is electrically connected with the control assembly.

4. The door control device with anti-pinch function according to claim 1, characterized in that, The control assembly comprises a single-chip microcomputer, and the single-chip microcomputer is arranged on the vehicle body (3).

5. The door control device with anti-pinch function according to claim 1, wherein The vehicle door control device with the anti-pinch function further comprises an electromagnetic induction assembly, the electromagnetic induction assembly comprises an electromagnetic sensor (51) and a permanent magnet (52), one of the electromagnetic sensor (51) and the permanent magnet (52) is arranged on the vehicle body (3), and the other is arranged on the vehicle door (2), the electromagnetic sensor (51) is electrically connected with the control assembly, and the electromagnetic sensor (51) can judge whether the vehicle door (2) is completely closed by collecting the magnetic force of the permanent magnet (52).

6. The door control device with anti-pinch function according to claim 1, wherein The vehicle door control device with the anti-pinch function further comprises a temperature sensor, and the temperature sensor is electrically connected with the control assembly.

7. A door anti-pinch control method for controlling a door control apparatus having an anti-pinch function as claimed in any one of claims 1 to 6, characterized by, The vehicle door anti-pinch control method comprises the following steps: S10, judging whether the vehicle door (2) is in a closing process, if yes, executing S20; S20, judging the position of the door (2) and judging whether there is an object between the door (2) and the vehicle body (3), if yes, executing S30; wherein, the S20 comprises: judging the anti-pinch area where the door (2) is located according to the door position detection assembly, the anti-pinch area comprises a first anti-pinch area, a second anti-pinch area and a third anti-pinch area, if the door (2) is in the first anti-pinch area, judging whether there is an object in the first anti-pinch area by comparing the current of the drive motor (10) with the current threshold and comparing the rotating speed of the drive motor (10) with the rotating speed threshold, if there is an object in the first anti-pinch area, executing S30; if the door (2) is in the second anti-pinch area, judging whether there is an object in the second anti-pinch area by comparing the current of the drive motor (10) with the current threshold and whether the infrared detection assembly (30) detects an object in the second anti-pinch area, if there is an object in the second anti-pinch area, executing S30; if the door (2) is in the third anti-pinch area, judging whether there is an object in the third anti-pinch area by comparing the current of the drive motor (10) with the current threshold, if there is an object in the third anti-pinch area, executing S30; S30, the electromagnetic locking assembly prevents the door (2) from closing.

8. The door anti-pinch control method according to claim 7, characterized in that: the judging whether there is an object in the first anti-pinch area by comparing the current of the drive motor (10) with the current threshold and comparing the rotating speed of the drive motor (10) with the rotating speed threshold comprises: if the current of the drive motor (10) exceeds the current threshold and the rotating speed of the drive motor (10) is lower than the rotating speed threshold, it is determined that there is an object in the first anti-pinch area; the judging whether there is an object in the second anti-pinch area by comparing the current of the drive motor (10) with the current threshold and whether the infrared detection assembly (30) detects an object in the second anti-pinch area comprises: if the current of the drive motor (10) exceeds the current threshold and the infrared detection assembly (30) detects an object in the second anti-pinch area, it is determined that there is an object in the second anti-pinch area; the judging whether there is an object in the third anti-pinch area by comparing the current of the drive motor (10) with the current threshold comprises: if the current of the drive motor (10) exceeds the current threshold, it is determined that there is an object in the third anti-pinch area.

9. Vehicle comprising a body (3) and a door (2), characterized in that The vehicle further comprises the door control device with anti-pinch function according to any one of claims 1-6.

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