Vehicle steering wheel heating method, device, processor and electronic device

Abstract

The present invention discloses a method, device, processor, and electronic device for heating a vehicle's steering wheel. The method includes: obtaining the original temperature of the vehicle's steering wheel; determining the rotational direction of the vehicle's motor based on the original steering wheel temperature, wherein the vehicle's motor is disposed within the steering wheel; adjusting the distance between a temperature sensor and a heating device based on the rotational direction of the vehicle's motor, wherein the temperature sensor is used to detect the original temperature of the steering wheel and the heating device is used to heat the steering wheel; heating the surface of the steering wheel based on the distance, wherein the surface temperature of the heated steering wheel is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold. This invention solves the technical problem of slow heating rates of vehicle steering wheels.

Description

Technical Field

[0001] The present invention relates to the field of intelligent control technology, and in particular to a method, device, processor and electronic device for heating a vehicle steering wheel. Background Art

[0002] Currently, the method for heating the steering wheel is generally achieved through sensors arranged at fixed positions. Since each steering wheel has a different shape and the relative positions of the heating pad and the sensor are different, a technical problem of a slow heating rate of the vehicle steering wheel occurs.

[0003] Currently, no effective solution has been proposed to the technical problem of the slow heating rate of the vehicle steering wheel. Summary of the Invention

[0004] Embodiments of the present invention provide a method, device, processor, and electronic device for heating a vehicle steering wheel, which at least solve the technical problem of a slow heating rate of the vehicle steering wheel.

[0005] According to one aspect of an embodiment of the invention, a method for heating a vehicle steering wheel is provided. The method may include: obtaining an original temperature of the vehicle steering wheel; determining a rotational direction of a vehicle motor based on the original temperature of the steering wheel, wherein the vehicle motor is disposed within the steering wheel; adjusting a distance between a temperature sensor and a heating device based on the rotational direction of the vehicle motor, wherein the temperature sensor is used to detect the original temperature of the steering wheel and the heating device is used to heat the steering wheel; heating a surface of the steering wheel based on the distance, wherein the surface temperature of the heated steering wheel is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold.

[0006] Optionally, the method includes: starting a heating function of the steering wheel so that the original temperature of the steering wheel rises to an initial temperature; based on the initial temperature, controlling a control unit of the vehicle to receive a temperature sensor signal; based on the temperature sensor signal, determining that the rotation direction of the vehicle motor is forward rotation.

[0007] Optionally, adjusting the distance between the temperature sensor and the heating device includes: based on the rotation direction of the vehicle motor being forward rotation, adjusting the distance between the temperature sensor and the heating device to a distance greater than a distance threshold, wherein the distance threshold is used to represent the original distance between the normally calibrated temperature sensor and the heating device when the steering wheel starts the heating function.

[0008] Optionally, the method includes: in response to the surface temperature of the steering wheel dropping to a lower limit temperature, controlling a control unit of the vehicle to receive a temperature sensing signal; based on the temperature sensing signal, determining that the rotation direction of the vehicle motor is reverse rotation; and based on the rotation direction being reverse rotation, adjusting the distance between the temperature sensor and the heating device to a distance less than a distance threshold.

[0009] Optionally, the method includes: in response to the surface temperature of the steering wheel rising to an upper limit temperature, controlling the vehicle control unit to perform a cut-off operation; in response to the surface temperature of the steering wheel being lower than a lower limit temperature, controlling the vehicle control unit to perform a cut-off operation.

[0010] Optionally, the method includes: in response to turning off the heating function of the steering wheel, controlling the vehicle's control unit to perform a cut-off operation, and controlling the vehicle's control unit to receive a temperature sensing signal; in response to the temperature sensing signal, controlling the vehicle's motor to rotate to an original position.

[0011] According to one aspect of an embodiment of the present invention, a vehicle steering wheel control device is provided, which may include: an acquisition unit for acquiring the original temperature of the vehicle's steering wheel; a first determination unit for determining the rotation direction of the vehicle's motor based on the original temperature of the steering wheel, wherein the vehicle's motor is deployed inside the steering wheel; an adjustment unit for adjusting the distance between a temperature sensor and a heating device based on the rotation direction of the vehicle's motor, wherein the temperature sensor is used to detect the original temperature of the steering wheel, and the heating device is used to heat the steering wheel; a second determination unit for heating the surface of the steering wheel according to the distance, wherein the surface temperature of the heated steering wheel is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold.

[0012] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device containing the computer-readable storage medium is controlled to execute the vehicle steering wheel control method according to an embodiment of the present invention.

[0013] According to another aspect of an embodiment of the present invention, a processor is provided, which is configured to run a program, wherein the program, when run, executes the vehicle steering wheel control method according to an embodiment of the present invention.

[0014] According to another aspect of an embodiment of the present invention, an electronic device is provided. The electronic device includes one or more processors and a memory, wherein the memory is configured to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors execute the vehicle steering wheel control method according to an embodiment of the present invention.

[0015] In an embodiment of the present invention, the original temperature of the vehicle's steering wheel is obtained; based on the original temperature of the steering wheel, the rotation direction of the vehicle's motor is determined, wherein the vehicle's motor is disposed inside the steering wheel; based on the rotation direction of the vehicle's motor, the distance between the temperature sensor and the heating device is adjusted, wherein the temperature sensor is used to detect the original temperature of the steering wheel, and the heating device is used to heat the steering wheel; based on the distance, the surface of the steering wheel is heated, wherein the surface temperature of the heated steering wheel is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold. In other words, the embodiment of the present invention can determine the rotation direction of the vehicle's motor based on the obtained original temperature of the steering wheel, and can adjust the distance between the temperature sensor and the heating device based on the obtained rotation direction to achieve the purpose of heating the steering wheel, thereby solving the technical problem of the slow heating rate of the vehicle's steering wheel and achieving the technical effect of improving the heating rate of the vehicle's steering wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 is a flow chart of a method for heating a steering wheel of a vehicle according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of a steering wheel heating structure according to an embodiment of the present invention;

[0019] Figure 3 is a flow chart of a steering wheel heating method according to an embodiment of the present invention;

[0020] Figure 4 is a flowchart of a method for turning off a steering wheel heating function according to an embodiment of the present invention;

[0021] Figure 5 2 is a schematic diagram of a vehicle steering wheel control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Example 1

[0025] According to an embodiment of the present invention, a method for heating the steering wheel of a vehicle is provided. It should be noted that in the flowchart of the accompanying drawings, the steps shown therein can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown here.

[0026] The following describes a method for heating a vehicle steering wheel according to an embodiment of the present invention.

[0027] Figure 1 : is a flow chart of a method for heating a steering wheel of a vehicle according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0028] Step S101, obtaining the original temperature of the vehicle's steering wheel.

[0029] In the technical solution provided in step S101 of the present invention, the original temperature of the steering wheel may be the working temperature of the steering wheel, such as 30 degrees Celsius (° C.), 40 degrees Celsius, etc. The original temperature is merely exemplified herein and is not specifically limited.

[0030] In this embodiment, the original temperature of the vehicle's steering wheel can be obtained using a temperature sensor. For example, the original temperature of the vehicle's steering wheel during operation can be obtained using the temperature sensor. It should be noted that this is merely an example of obtaining the original temperature of the vehicle's steering wheel and does not specifically limit the method for obtaining the original temperature of the vehicle's steering wheel. All methods for obtaining the original temperature of the vehicle's steering wheel are within the scope of the present invention and are not listed here.

[0031] Step S102 : determining a rotation direction of a vehicle motor based on an original temperature of the steering wheel, wherein the vehicle motor is disposed inside the steering wheel.

[0032] In the technical solution provided in step S102 of the present invention, the rotation direction of the vehicle motor can include forward rotation and reverse rotation. Forward rotation can increase the distance between the temperature sensor and the heater, while reverse rotation can decrease the distance between the temperature sensor and the heater. The rotation direction of the vehicle motor is merely illustrative and is not specifically limited.

[0033] Alternatively, the vehicle's control unit can directly control the motor, whose output shaft can be connected to a spring wire, allowing the spring wire to shorten or lengthen, thereby driving the negative temperature coefficient (NTC) sensor away from or closer to the heating wire to adjust the initial distance between the NTC sensor and the heating wire. The initial distance can be the distance calibrated for normal steering wheel heating.

[0034] In this embodiment, the rotation direction of the vehicle motor can be determined based on the original temperature of the steering wheel obtained in step S101. For example, when the original temperature of the steering wheel is 40 degrees Celsius, the rotation direction of the vehicle motor can be determined to be reverse rotation, thereby achieving the purpose of reducing the temperature of the steering wheel during operation.

[0035] It should be noted that this is only a preferred implementation method for determining the rotation direction of the vehicle motor. The method for determining the rotation direction of the vehicle motor is not specifically limited here. All methods for determining the rotation direction of the vehicle motor are within the scope of protection of the present invention and are not listed here one by one.

[0036] Step S103 , adjusting the distance between the temperature sensor and the heating device based on the rotation direction of the vehicle motor, wherein the temperature sensor is used to detect the original temperature of the steering wheel, and the heating device is used to heat the steering wheel.

[0037] In the technical solution provided in step S103 of the present invention, the temperature sensor may be a negative temperature coefficient sensor, and the heating device may be a heating wire. Here, the temperature sensor and the heating device are merely exemplified and are not specifically limited.

[0038] In this embodiment, the distance between the temperature sensor and the heater element can be adjusted based on the rotation direction of the vehicle motor. For example, when the vehicle motor rotates in the forward direction, the distance between the NTC sensor and the heater element can be adjusted to gradually increase, and when the vehicle motor rotates in the reverse direction, the distance between the NTC sensor and the heater element can be adjusted to gradually decrease.

[0039] Optionally, the heating function of the steering wheel can be activated so that the original temperature of the steering wheel rises to the initial calibrated temperature. According to the initial calibrated temperature, the vehicle's control unit is controlled to receive the temperature sensor signal, and further, the rotation direction of the vehicle's motor is determined to be forward rotation, thereby increasing the distance between the temperature sensor and the heating device.

[0040] Optionally, the steering wheel heating function can be turned off, the vehicle's control unit can be controlled to perform a cut-off operation, and the vehicle's control unit can be controlled to receive a temperature sensor signal and rotate the vehicle's motor to its original position to repeat the steering wheel heating process.

[0041] Step S104 : heating the surface of the steering wheel according to the distance, wherein the surface temperature of the heated steering wheel is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold.

[0042] In the technical solution provided in step S104 of the present invention, the first temperature threshold may be a stable lower temperature limit, which may be represented by T0, and the second temperature threshold may be a stable upper temperature limit, which may be represented by T1. The first and second temperature thresholds are merely exemplified herein and are not specifically limited thereto.

[0043] In this embodiment, based on the distance between the temperature sensor and the heating device determined in step S103, the surface of the steering wheel can be heated, and the surface temperature of the steering wheel can be controlled within a set required range to achieve the purpose of controlling the steering wheel temperature.

[0044] It should be noted that this is only a preferred embodiment for heating the surface of the steering wheel, and does not specifically limit the process and method for heating the surface of the steering wheel. All methods and processes for heating the surface of the steering wheel are within the scope of protection of the present invention and are not listed here one by one.

[0045] In the above steps S101 to S104 of the present invention, the original temperature of the vehicle's steering wheel is obtained; based on the original temperature of the steering wheel, the rotation direction of the vehicle's motor is determined, wherein the vehicle's motor is disposed inside the steering wheel; based on the rotation direction of the vehicle's motor, the distance between the temperature sensor and the heating device is adjusted, wherein the temperature sensor is used to detect the original temperature of the steering wheel and the heating device is used to heat the steering wheel; based on the distance, the surface of the steering wheel is heated, wherein the surface temperature of the heated steering wheel is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold. In other words, the embodiment of the present invention can determine the rotation direction of the vehicle's motor based on the obtained original temperature of the steering wheel, and can adjust the distance between the temperature sensor and the heating device based on the obtained rotation direction to achieve the purpose of heating the steering wheel, thereby solving the technical problem of the slow heating rate of the vehicle's steering wheel and achieving the technical effect of improving the heating rate of the vehicle's steering wheel.

[0046] The above method of this embodiment is further introduced below.

[0047] As an optional embodiment, the heating function of the steering wheel is started so that the original temperature of the steering wheel rises to the initial temperature; based on the initial temperature, the control unit of the vehicle is controlled to receive a temperature sensor signal; based on the temperature sensor signal, the rotation direction of the vehicle motor is determined to be forward rotation.

[0048] In this embodiment, the initial temperature may be an initially calibrated sensor temperature, which may be represented by T, e.g., 40 degrees Celsius. The temperature sensor signal may be obtained by an NTC sensor. The initial temperature and the temperature sensor signal are merely exemplified herein and are not specifically limited thereto.

[0049] In this embodiment, the heating function of the steering wheel can be activated so that the original temperature of the steering wheel rises to the initial temperature. Based on the obtained initial temperature, the vehicle's control unit can be controlled to receive the temperature sensor signal to achieve the purpose of determining that the rotation direction of the vehicle's motor is forward rotation.

[0050] It should be noted that this is only a preferred implementation method for determining the rotation direction of the vehicle motor after starting the heating function of the steering wheel. It does not specifically limit the process and method for determining the rotation direction of the vehicle motor after starting the heating function of the steering wheel. All processes and methods for determining the rotation direction of the vehicle motor after starting the heating function of the steering wheel are within the scope of protection of the present invention and are not listed here one by one.

[0051] For example, when the steering wheel heating function is started, the system is in full-power heating mode, and the operating temperature of the steering wheel detected by the NTC sensor gradually increases. When the operating temperature of the steering wheel reaches the T value (the initial calibrated sensor temperature), the vehicle's control unit can receive the NTC temperature sensing signal, thereby determining that the motor is rotating in the forward direction.

[0052] As an optional embodiment, adjusting the distance between the temperature sensor and the heating device includes: based on the rotation direction of the vehicle motor being forward rotation, adjusting the distance between the temperature sensor and the heating device to a distance greater than a distance threshold, wherein the distance threshold is used to represent the original distance between the normally calibrated temperature sensor and the heating device when the steering wheel starts the heating function.

[0053] In this embodiment, if the vehicle's motor is rotating in the forward direction, the distance between the temperature sensor and the heater is adjusted to a distance greater than a distance threshold. The distance threshold may be a distance calibrated for normal steering wheel heating. For example, when the vehicle's motor is rotating in the forward direction, the distance between the NTC sensor and the heater wire may be adjusted to be greater than the distance threshold.

[0054] For example, when the vehicle's control unit receives the NTC temperature sensor signal and the drive motor rotates forward, the NTC sensor can be driven to slowly move away from the heating wire. The specific rate and distance at which the NTC sensor slowly moves away from the heating wire need to be calibrated and confirmed.

[0055] As an optional embodiment, in response to the surface temperature of the steering wheel dropping to a lower limit temperature, the control unit of the vehicle receives a temperature sensor signal; based on the temperature sensor signal, it is determined that the rotation direction of the vehicle motor is reverse rotation; based on the rotation direction being reverse rotation, the distance between the temperature sensor and the heating device is adjusted to a distance less than a distance threshold.

[0056] In this embodiment, the lower limit temperature may be a stable lower limit temperature, which may be represented by T0. The lower limit temperature is merely illustrated here and is not specifically limited.

[0057] In this embodiment, if the surface temperature of the steering wheel drops to the lower limit temperature, the vehicle's control unit can be controlled to receive a temperature sensor signal, further determine that the rotation direction of the vehicle's motor is reverse rotation, and adjust the distance between the temperature sensor and the heating device to be less than the distance threshold.

[0058] For example, when the system is in full-power heating mode, the vehicle's control unit can control the motor to rotate in the opposite direction until the steering wheel surface temperature reaches the set stable lower limit temperature T0, thereby driving the NTC sensor to slowly approach the heating wire. The specific speed and distance at which the NTC sensor slowly approaches the heating wire require calibration.

[0059] As an optional embodiment, in response to the surface temperature of the steering wheel rising to the upper limit temperature, the control unit of the vehicle is controlled to perform a cut-off operation; in response to the surface temperature of the steering wheel being lower than the lower limit temperature, the control unit of the vehicle is controlled to perform a connect-on operation.

[0060] In this embodiment, the upper limit temperature may be a stable upper limit temperature, which may be represented by T1. The disconnection operation may be an operation of disconnecting current, and the connection operation may be an operation of connecting current. The upper limit temperature, disconnection operation, and connection operation are merely illustrative examples and are not specifically limited to these operations.

[0061] In this embodiment, if the surface temperature of the steering wheel rises to the upper limit temperature, the vehicle control unit can be controlled to perform a cut-off operation, and if the surface temperature of the steering wheel is lower than the lower limit temperature, the vehicle control unit can be controlled to perform a cut-off operation.

[0062] For example, when the vehicle's control unit controls the motor to rotate in the opposite direction, driving the NTC sensor to slowly approach the heating wire, if the steering wheel's surface temperature reaches the set stable upper limit temperature T1, the control unit immediately cuts off the current to prevent the temperature from exceeding the standard. When the steering wheel's surface temperature gradually drops below the set stable lower limit range T0, the control unit must reconnect the current, and this cycle repeats to ensure that the steering wheel's surface temperature remains within the required range. Due to the different layouts and resistance values ​​of the heating pads on different steering wheels, the corresponding T values, T0, and T1 values ​​are also different.

[0063] As an optional embodiment, in response to turning off the heating function of the steering wheel, the control unit of the vehicle is controlled to perform a cut-off operation, and the control unit of the vehicle is controlled to receive a temperature sensor signal; in response to the temperature sensor signal, the vehicle motor is controlled to rotate to the original position.

[0064] In this embodiment, the heating function of the steering wheel can be turned off, the vehicle control unit can be controlled to perform a cut-off operation, and a temperature sensing signal can be received. Further, based on the obtained temperature sensing signal, the vehicle motor can be controlled to rotate to the original position.

[0065] It should be noted that this is only a preferred implementation method for determining the rotation mode of the vehicle motor after turning off the heating function of the steering wheel. It does not specifically limit the determination of the rotation mode of the vehicle motor after turning off the heating function of the steering wheel. All processes for determining the rotation mode of the vehicle motor after turning off the heating function of the steering wheel are within the scope of protection of the present invention and are not listed here one by one.

[0066] For example, when the steering wheel heating function is turned off, the vehicle's control unit cuts off the current and controls the motor rotation to drive the NTC sensor back to the original calibration position. When the steering wheel heating function is started again, the process of turning on the steering wheel heating function for the first time is repeated.

[0067] In this embodiment, the steering wheel heating function can be activated to raise the original temperature of the steering wheel to an initial temperature. Based on the obtained initial temperature, the vehicle control unit is controlled to receive a temperature sensor signal to control the rotation direction of the vehicle motor and adjust the distance between the temperature sensor and the heating device to ensure that the temperature of the steering wheel is within a set temperature range. The steering wheel heating function can be turned off by controlling the vehicle control unit to perform a cut-off operation and control the vehicle control unit to receive a temperature sensor signal to control the vehicle motor to rotate to the original position, thereby resolving the technical problem of the slow heating rate of the vehicle steering wheel and achieving the technical effect of improving the heating rate of the vehicle steering wheel.

[0068] Example 2

[0069] The technical solutions of the embodiments of the present invention are described below with reference to preferred implementation methods.

[0070] Customers are increasingly demanding a more comfortable driving experience, and as a practical and essential feature, heated steering wheels are attracting increasing attention for their performance. Currently available steering wheel heaters generally heat up quickly at low temperatures, but this rate decreases significantly as temperatures rise, particularly above 20°C. This performance issue has led to complaints from users. The reason is that, under the current layout of the heating pads and the controller software strategy, it is impossible to maintain a high heating rate from low temperature (-20°C) to normal temperature (23°C) through heating function calibration. Because steering wheel heating ultimately has a stable temperature requirement limit (to prevent the heating temperature from being too high and hot), the heating function calibration can only maintain full-power heating during the initial stage of heating. At this time, the steering wheel's thermistor sensor NTC does not intervene in temperature control, and the controller does not control the current. Once the steering wheel leather surface temperature reaches a certain temperature (which is lower than the set stable temperature), the NTC intervenes in temperature control, and the controller will disconnect the current and stop heating. Otherwise, the leather surface temperature will exceed the set temperature range, and the user will feel hot or even burn. When the temperature drops below the leather surface temperature corresponding to the sensor temperature set by the NTC, the controller will restart heating, and this cycle will be repeated until the leather surface gradually reaches the set stable temperature.

[0071] Because the steering wheel heating pad and NTC sensor are located in fixed positions, this control strategy requires the NTC to intervene in temperature control in advance to bring the heating curve back within the set temperature range. Because each steering wheel design varies, the relative positions of the heating pad and NTC are also different. Sometimes, the NTC needs to be set to several temperature values ​​to maintain the heating curve within the set temperature range. This not only consumes time and effort to calibrate, but also has a very slow heating rate at room temperature, which can easily lead to user complaints.

[0072] In one possible implementation, a steering wheel heating control system is proposed. The system includes a steering wheel and a heating belt mounted on the steering wheel. The heating belt is equipped with a temperature sensor for collecting the real-time temperature of the steering wheel. A heating control module includes a temperature acquisition unit, a signal acquisition unit, a power input unit, and a heating power control unit. The temperature acquisition unit is electrically connected to the temperature sensor and receives real-time steering wheel temperature data transmitted by the temperature sensor as an electrical signal. The heating power control unit is electrically connected to the heating belt. The heating control module is electrically connected to a main power supply module via a power input unit, which provides power. However, the above method still suffers from the technical problem of a slow heating rate for the vehicle steering wheel.

[0073] In another possible implementation, a steering wheel heating control method based on closed-loop temperature regulation is proposed. This method includes several key control factors: a target heating temperature, a real-time temperature, the temperature difference between the target and real-time temperatures, a proportional-integral-differential (PID) control algorithm based on the temperature difference, a corresponding pulse-width modulation (PWM) duty cycle increment, and the actual control output PWM wave duty cycle, the voltage duty cycle of the heating element output, and the power output of the heating element. However, this method still suffers from the technical problem of a slow vehicle steering wheel heating rate.

[0074] In another possible implementation, a method and system for controlling vehicle steering wheel heating are proposed. The method includes: upon receiving a vehicle unlock signal, obtaining the current temperature of the vehicle steering wheel and determining whether the current temperature meets preheating conditions; if so, matching the current temperature with a preheating control table to obtain a power supply control image, and preheating the vehicle steering wheel according to the power supply control image; obtaining the preheating temperature of the vehicle steering wheel after preheating, and determining whether the preheating temperature is within a first preset temperature range; if so, obtaining the outdoor ambient temperature, matching the outdoor ambient temperature with a heating control table to obtain a heating control curve, and performing master control heating of the vehicle steering wheel according to the heating control curve. However, the above method still suffers from the technical problem of a slow heating rate of the vehicle steering wheel.

[0075] In another possible implementation, a steering wheel heating control system and method are proposed. The system includes a coolant temperature sensor and a vehicle controller (VCU). The system also includes a main relay, an auxiliary control device, and a steering wheel heater wire. The coil end of the main relay is electrically connected to the VCU. The contact end of the main relay, the auxiliary control device, a first power source, and the steering wheel heater wire are sequentially connected end to end to form a first circuit. When the auxiliary control device is not activated, the VCU controls the first circuit via the main relay based on a signal from the coolant temperature sensor, thereby starting or stopping heating the steering wheel heater wire. However, this method still suffers from the technical problem of a slow heating rate for the vehicle steering wheel.

[0076] Therefore, in order to address the above-mentioned problem, the present invention provides a method for heating the steering wheel of a vehicle. The method can determine the rotation direction of the vehicle motor based on the original temperature of the steering wheel obtained. Based on the obtained rotation direction, the distance between the temperature sensor and the heating device can be adjusted to achieve the purpose of heating the steering wheel, thereby realizing the technical effect of improving the heating rate of the vehicle steering wheel.

[0077] Figure 2 Schematic diagram of a steering wheel heating structure according to an embodiment of the present invention. Figure 2 As shown, the structure may include: a control unit 201 , a motor 202 , an NTC sensor 203 , a spring steel wire 204 , a wiring harness 205 and a heating wire 206 .

[0078] The control unit 201 is used to receive a temperature sensing signal from an NTC sensor.

[0079] The motor 202 is used to drive the motor to rotate according to the received temperature sensor signal. The motor is arranged inside the steering wheel and can be directly controlled by the control unit.

[0080] The NTC sensor 203 is used to obtain the temperature of the steering wheel.

[0081] The spring steel wire 204 is used to connect the motor output shaft to the spring steel wire, which can shorten or lengthen the spring steel wire, driving the NTC sensor away from or close to the heating wire, thereby adjusting the distance between the NTC sensor and the heating wire (the initial distance value is the distance during normal heating calibration).

[0082] The wiring harness 205 is used to connect some basic equipment to ensure the flow of current.

[0083] The heating wire 206 can use spring steel wire to adjust the distance between the NTC sensor and the heating wire.

[0084] Figure 3 is a flow chart of a steering wheel heating method according to an embodiment of the present invention. Figure 3 As shown, the method may include the following steps:

[0085] Step S301: Turn on the heating function of the steering wheel.

[0086] In this embodiment, the heating function of the steering wheel can be turned on.

[0087] In step S302, the control unit turns on the current and starts full-power heating.

[0088] In this embodiment, after the heating function of the steering wheel is turned on, the system is in full-power heating mode, and the sensing temperature of the NTC sensor gradually increases.

[0089] Step S303: Whether the sensing temperature of the NTC sensor is greater than or equal to the initial calibrated sensing temperature.

[0090] In this embodiment, when the steering wheel heating function is started, the sensing temperature of the NTC sensor gradually increases, and it is determined whether the sensing temperature of the NTC sensor is greater than or equal to the initial calibrated sensing temperature (ie, T). If so, step S304 is executed; if not, step S302 is executed.

[0091] Step S304: Control the motor to rotate, driving the NTC sensor to slowly move away from the heating wire.

[0092] In this embodiment, if it is determined that the sensing temperature of the NTC sensor is greater than or equal to the initially calibrated sensing temperature, the control unit receives the temperature sensing signal of the NTC sensor, and then drives the motor to rotate, driving the NTC sensor to slowly move away from the heating wire (the specific speed and distance need to be calibrated and confirmed).

[0093] Step S305: Check whether the steering wheel surface temperature is greater than or equal to the lower temperature limit.

[0094] In this embodiment, when the NTC sensor slowly moves away from the heating wire, the system is still in full-power heating mode, and it is determined whether the steering wheel surface temperature is greater than or equal to the lower temperature limit (T0). If so, step S306 is executed, if not, step S302 is executed.

[0095] Step S306: Control the motor to rotate in the reverse direction, driving the NTC sensor to slowly approach the heating wire.

[0096] In this embodiment, when the steering wheel surface temperature is greater than or equal to the lower temperature limit (T0), the control unit controls the motor to rotate in the opposite direction, driving the NTC to slowly approach the heating wire (the specific speed and distance need to be calibrated and confirmed).

[0097] Step S307: Check whether the steering wheel surface temperature is greater than or equal to the upper temperature limit.

[0098] In this embodiment, when the NTC slowly approaches the heating wire, it is determined whether the steering wheel surface temperature has reached the set stable temperature upper limit T1. If it has reached it, step S308 is executed; if not, step S304 is executed.

[0099] In step S308 , the control unit immediately cuts off the current.

[0100] In this embodiment, it can be determined that the surface temperature of the steering wheel has reached the set stable temperature upper limit T1, and the control unit immediately cuts off the current to prevent the temperature from exceeding the limit.

[0101] Step S309: Check whether the steering wheel surface temperature is less than the lower temperature limit.

[0102] In this embodiment, it is determined whether the steering wheel surface temperature is less than the lower temperature limit (T0). If the steering wheel surface temperature is less than the lower temperature limit, step S302 is executed; if the steering wheel surface temperature is not less than the lower temperature limit, step S308 is executed.

[0103] In this embodiment, by turning on the heating function of the steering wheel, the control unit turns on the current and turns on full-power heating. Whether the sensing temperature of the NTC sensor is greater than or equal to the initial calibrated sensing temperature, if the sensing temperature of the NTC sensor is greater than or equal to the initial calibrated sensing temperature, the motor is controlled to rotate, driving the NTC sensor to slowly move away from the heating wire, and then, by judging whether the surface temperature of the steering wheel is greater than or equal to the lower temperature limit, if the surface temperature of the steering wheel is greater than or equal to the lower temperature limit, the motor is controlled to rotate in the opposite direction, driving the NTC sensor to slowly approach the heating wire, and judging whether the surface temperature of the steering wheel is greater than or equal to the upper temperature limit, if the surface temperature of the steering wheel is greater than or equal to the upper temperature limit, the control unit immediately cuts off the current and stops heating, and finally judges whether the surface temperature of the steering wheel is less than the lower temperature limit. If the surface temperature of the steering wheel is less than the lower temperature limit, the control unit needs to turn on the current and turn on full-power heating, thereby solving the technical problem of the slow heating rate of the vehicle steering wheel and achieving the technical effect of improving the heating rate of the vehicle steering wheel.

[0104] Figure 4 FIG. 1 is a flow chart of a method for turning off a steering wheel heating function according to an embodiment of the present invention. Figure 4 As shown, the method may include the following steps:

[0105] Step S401: Turn off the heating function of the steering wheel.

[0106] Step S402: The control unit cuts off the current.

[0107] Step S403: The motor rotates to drive the NTC sensor back to the original calibration position.

[0108] Step S404, start heating again.

[0109] In this embodiment, when the motor rotates and drives the NTC sensor back to the original calibration position, the steering wheel heating function can be started again, and the process of turning on the heating function is repeated, that is, the steering wheel heating function is turned on again. Figure 3 method.

[0110] In this embodiment, when the steering wheel heating function is turned off, the control unit is required to cut off the current and at the same time control the motor rotation to drive the NTC back to the original calibration position. When the steering wheel heating function is started again, the process of turning on the heating function is repeated, thereby solving the technical problem of the slow heating rate of the vehicle steering wheel and achieving the technical effect of improving the heating rate of the vehicle steering wheel.

[0111] Example 3

[0112] According to an embodiment of the present invention, a vehicle steering wheel control device is provided. It should be noted that the vehicle steering wheel control device can be used to execute the vehicle steering wheel heating method in Example 1.

[0113] Figure 5 FIG. 1 is a schematic diagram of a vehicle steering wheel control device according to an embodiment of the present invention. Figure 5 As shown, a vehicle steering wheel control device 500 may include: an acquisition unit 501 , a first determination unit 502 , an adjustment unit 503 and a second determination unit 504 .

[0114] The acquisition unit 501 is used to acquire the original temperature of the steering wheel of the vehicle.

[0115] The first determining unit 502 is configured to determine a rotation direction of a vehicle motor based on an original temperature of a steering wheel, wherein the vehicle motor is disposed inside the steering wheel.

[0116] The adjustment unit 503 is used to adjust the distance between the temperature sensor and the heating device based on the rotation direction of the vehicle motor, wherein the temperature sensor is used to detect the original temperature of the steering wheel and the heating device is used to heat the steering wheel.

[0117] The second determining unit 504 is configured to heat the surface of the steering wheel according to the distance, wherein the surface temperature of the steering wheel after heating is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold.

[0118] Optionally, the device may also include: a starting unit for starting the heating function of the steering wheel so that the original temperature of the steering wheel rises to the initial temperature; a first control unit for controlling the vehicle's control unit to receive a temperature sensing signal based on the initial temperature; and a third determination unit for determining that the rotation direction of the vehicle's motor is forward rotation based on the temperature sensing signal.

[0119] Optionally, the adjustment unit 503 includes: an adjustment module for adjusting the distance between the temperature sensor and the heating device to a distance greater than a distance threshold based on the rotation direction of the vehicle motor being forward rotation, wherein the distance threshold is used to represent the original distance between the normally calibrated temperature sensor and the heating device when the steering wheel starts the heating function.

[0120] Optionally, the adjustment module may include: a first control submodule, used to control the vehicle's control unit to receive a temperature sensor signal in response to the surface temperature of the steering wheel dropping to a lower limit temperature; a determination submodule, used to determine that the rotation direction of the vehicle's motor is reverse rotation based on the temperature sensor signal; and an adjustment submodule, used to adjust the distance between the temperature sensor and the heating device to a distance less than a distance threshold based on the rotation direction being reverse rotation.

[0121] Optionally, the adjustment module may also include: a second control submodule, used to control the vehicle's control unit to perform a cut-off operation in response to the surface temperature of the steering wheel rising to an upper limit temperature; and a third control submodule, used to control the vehicle's control unit to perform a connect operation in response to the surface temperature of the steering wheel being lower than a lower limit temperature.

[0122] Optionally, the device may also include: a second control unit, used to control the vehicle's control unit to perform a cut-off operation in response to turning off the heating function of the steering wheel, and control the vehicle's control unit to receive a temperature sensing signal; a third control unit, used to control the vehicle's motor to rotate to its original position in response to the temperature sensing signal.

[0123] In this embodiment, the original temperature of the steering wheel of the vehicle is obtained by an acquisition unit; a first determination unit is used to determine the rotation direction of the vehicle motor based on the original temperature of the steering wheel, wherein the vehicle motor is deployed inside the steering wheel; an adjustment unit is used to adjust the distance between the temperature sensor and the heating device based on the rotation direction of the vehicle motor, wherein the temperature sensor is used to detect the original temperature of the steering wheel, and the heating device is used to heat the steering wheel; a second determination unit is used to heat the surface of the steering wheel according to the distance, wherein the surface temperature of the heated steering wheel is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, thereby solving the technical problem of the slow heating rate of the vehicle steering wheel and achieving the technical effect of improving the heating rate of the vehicle steering wheel.

[0124] Example 4

[0125] According to an embodiment of the present invention, a computer-readable storage medium is also provided, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the vehicle steering wheel control method in Example 1.

[0126] Example 5

[0127] According to an embodiment of the present invention, a processor is further provided, which is used to run a program, wherein the vehicle steering wheel control method in embodiment 1 is executed when the program is run.

[0128] Example 6

[0129] According to an embodiment of the present invention, an electronic device is also provided, which includes one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by one or more processors, the one or more processors execute the vehicle steering wheel control method in Example 1.

[0130] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0131] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0132] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, and can be electrical or other forms.

[0133] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0134] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0135] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0136] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for heating a steering wheel of a vehicle, characterized in that: The method comprises: Get the original temperature of the vehicle's steering wheel; determining a rotation direction of a vehicle motor based on an original temperature of the steering wheel, wherein the vehicle motor is disposed inside the steering wheel; adjusting a distance between a temperature sensor and a heating device based on a rotation direction of the vehicle motor, wherein the temperature sensor is used to detect an original temperature of the steering wheel and the heating device is used to heat the steering wheel; The surface of the steering wheel is heated according to the distance, wherein the surface temperature of the steering wheel after heating is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold.

2. The method according to claim 1, characterized in that The method comprises: activating a heating function of the steering wheel so that the original temperature of the steering wheel rises to an initial temperature; Based on the initial temperature, controlling a control unit of the vehicle to receive a temperature sensing signal; Based on the temperature sensing signal, it is determined that the rotation direction of the vehicle motor is forward rotation.

3. The method according to claim 2, characterized in that Adjust the distance between the temperature sensor and the heating device, including: Based on the fact that the rotation direction of the vehicle motor is the forward rotation, the distance between the temperature sensor and the heating device is adjusted to a distance greater than a distance threshold, wherein the distance threshold is used to represent the original distance between the temperature sensor and the heating device that is normally calibrated when the steering wheel starts the heating function.

4. The method according to claim 3, characterized in that The method comprises: In response to the surface temperature of the steering wheel dropping to a lower limit temperature, a control unit for controlling the vehicle receives a temperature sensing signal; determining, based on the temperature sensing signal, that the rotation direction of the vehicle motor is reverse rotation; Based on the fact that the rotation direction is the reverse rotation, the distance between the temperature sensor and the heating device is adjusted to a distance smaller than a distance threshold.

5. The method according to claim 4, characterized in that The method comprises: In response to the surface temperature of the steering wheel rising to an upper limit temperature, controlling a control unit of the vehicle to perform a cutoff operation; In response to the surface temperature of the steering wheel being lower than the lower limit temperature, a control unit of the vehicle is controlled to perform a key-on operation.

6. The method according to claim 1, characterized in that The method comprises: In response to turning off the heating function of the steering wheel, controlling the control unit of the vehicle to perform a cut-off operation, and controlling the control unit of the vehicle to receive a temperature sensing signal; In response to the temperature sensing signal, the vehicle motor is controlled to rotate to an original position.

7. A vehicle steering wheel control device, characterized in that: The device comprises: An acquisition unit, used for acquiring an original temperature of a vehicle's steering wheel; a first determining unit, configured to determine a rotation direction of a vehicle motor based on an original temperature of the steering wheel, wherein the vehicle motor is disposed inside the steering wheel; an adjusting unit, configured to adjust a distance between a temperature sensor and a heating device based on a rotation direction of the vehicle motor, wherein the temperature sensor is configured to detect an original temperature of the steering wheel and the heating device is configured to heat the steering wheel; The second determining unit is configured to heat the surface of the steering wheel according to the distance, wherein the surface temperature of the steering wheel after heating is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 6.

9. A processor, characterized in that: The processor is configured to run a program, wherein the program executes the method according to any one of claims 1 to 6 when running.

10. An electronic device, characterized in that: The invention comprises one or more processors and a memory, wherein the memory is used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors execute the method according to any one of claims 1 to 6.

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