CN115752543A - Method for calibrating steering wheel hands-off detection function and electronic equipment - Google Patents

Abstract

The invention discloses a method for calibrating a steering wheel hands-off detection function and electronic equipment. The method comprises the following steps: setting an initial threshold value according to the position of a sensing unit in a steering wheel sensing area; within a first preset temperature range, acquiring a first induction signal corresponding to each test temperature according to the temperature step interval; determining a middle threshold value after temperature compensation according to the initial threshold value, the first induction signal and the test temperature; in a second preset temperature range, testing different working conditions of different types of test objects at each test temperature to obtain a second induction signal; and determining a calibration threshold value according to the intermediate threshold value, the second induction signal and the test temperature. The invention provides a method for calibrating a steering wheel hands-off detection function and electronic equipment, which are used for improving the precision of hands-off detection and improving driving safety.

Description

A calibration method and electronic equipment for hand-off detection function of steering wheel

technical field

Embodiments of the present invention relate to the technical field of vehicle steering wheel detection, and in particular to a method for calibrating a steering wheel hand-off detection function and electronic equipment.

Background technique

With the in-depth development and application of the automatic driving function of the car, the state of the human hand in the process of switching between automatic driving and human driving needs to be accurately detected, otherwise safety accidents will be caused due to system detection errors. At present, the hand-off detection function of the steering wheel is used in the environment, and the calibration of the usage is still insufficient, which is prone to false alarms of the hand-off state, resulting in the upper system outputting wrong alarm signals.

Contents of the invention

The invention provides a method for calibrating the hand-off detection function of a steering wheel and an electronic device, so as to improve the accuracy of the hand-off detection and improve driving safety.

In the first aspect, an embodiment of the present invention provides a method for calibrating the steering wheel hand-off detection function, including:

Set the initial threshold according to the position of the sensing unit in the steering wheel sensing area;

Within the first preset temperature range, the first sensing signal corresponding to each test temperature is obtained according to the temperature step interval;

determining a temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal, and the test temperature;

Within the second preset temperature range, different types of test objects are tested under different working conditions at each test temperature to obtain a second induction signal;

A calibration threshold is determined according to the intermediate threshold, the second sensing signal and the test temperature.

Optionally, determining a temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal, and the test temperature includes:

Draw a temperature compensation calibration curve according to the test temperature and the first induction signal;

determining temperature compensation data according to the temperature compensation calibration curve and the initial threshold;

An intermediate threshold is obtained from the initial threshold and the temperature compensation data.

Optionally, determining the calibration threshold according to the intermediate threshold, the second sensing signal and the test temperature includes:

determining a correction value according to the second sensing signal corresponding to the test temperature and the intermediate threshold;

The calibration threshold is determined according to the intermediate threshold and the correction value.

Optionally, an initial threshold is set according to the position of the sensing unit in the sensing area of the steering wheel, including:

The steering wheel includes a first surface and a second surface, wherein the first surface and the second surface are opposite surfaces; the initial thresholds of the sensing units on the first surface are the same; the second surface The initial thresholds of the sensing units on the first surface are the same; the initial thresholds of the sensing units on the first surface are different from those of the sensing units on the second surface.

Optionally, after determining the temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal and the test temperature, the method further includes:

Verifying whether the intermediate threshold eliminates the influence of different test temperatures on the induction signal; if the verification result is qualified, locking the temperature compensation data;

If it is unqualified, the temperature compensation data is adjusted, and the verification is repeated until the verification result is qualified.

Optionally, after determining the calibration threshold according to the second sensing signal and the test temperature, the method further includes:

The calibration threshold is verified according to different test object types.

Optionally, the classification conditions for the different types of test subjects include at least one of weight, age and gender of the test population.

Optionally, the first preset temperature range is -40°C to 85°C.

Optionally, the sensing unit is at least one of a capacitance unit, a pressure unit and a camera unit.

In a second aspect, an embodiment of the present invention provides an electronic device, and the electronic device includes:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor, so that the at least one processor can execute any one of the embodiments of the present invention. The calibration method of the steering wheel hand-off detection function described above.

The technical solution provided by the embodiment of the present invention improves the reliability of the initial threshold by setting the initial threshold according to the position of the sensing unit in the sensing area of the steering wheel, and uses a wider first preset temperature range to perform temperature compensation on the sensing unit, covering All user temperature ranges will be more accurate than single temperature calibration data. Within the second preset temperature range, the same type of test object and different working conditions can be distinguished, and the second induction signal can be obtained by testing at each test temperature. , using the second induction signal, the intermediate threshold after temperature compensation and the test temperature to determine the calibration threshold, thus covering the calibration thresholds of different test objects, different temperatures, different working conditions, etc., improving the accuracy of hand-off detection and driving Drive safely.

Description of drawings

FIG. 1 is a flow chart of a method for calibrating a steering wheel hand-off detection function provided by an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a steering wheel sensing area provided by an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a top view of a steering wheel sensing area provided by an embodiment of the present invention.

Fig. 4 is a flow chart of another calibration method for the steering wheel hand-off detection function provided by the embodiment of the present invention.

Fig. 5 is a flow chart of another calibration method for the steering wheel hand-off detection function provided by the embodiment of the present invention.

FIG. 6 is a flow chart of yet another calibration method for the steering wheel hand-off detection function provided by the embodiment of the present invention.

FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a flow chart of a method for calibrating the hands-off detection function of the steering wheel provided by an embodiment of the present invention. This embodiment is applicable to the calibration of the hands-off detection function of the steering wheel, and the method can be performed by a calibration device for the hands-off detection of the steering wheel. The device can be realized by hardware and/or software. The method specifically includes the following steps:

S110, setting an initial threshold according to the position of the sensing unit in the sensing area of the steering wheel;

Specifically, according to the position to be detected, a steering wheel sensing area is set on the steering wheel. For example, the steering wheel sensing area has a single area and a three-area scheme, which can not only distinguish touch and grip, but also distinguish left or right hands, improving the accuracy of judgment. Fig. 2 is a schematic cross-sectional view of a steering wheel sensing area provided by an embodiment of the present invention, and Fig. 3 is a schematic structural view of a top view of a steering wheel sensing area provided by an embodiment of the present invention, referring to Fig. 2 and Fig. 3 , in the steering wheel sensing area A corresponding sensing unit 2 can be arranged under the leather 1 covering the steering wheel, and the sensing unit 2 is connected to the control chip 4 through a wiring harness 3 . The sensing unit detects the change of the sensing signal of the driver's hand in the sensing area of the steering wheel, and uses the sensing signal to reflect the touch state of the driver's hand. When calibrating the hand-off detection function, first set the initial threshold for the sensing unit as the initial standard for the subsequent touch state sensing of the driver's hand. Since the position of the driver's hand in the sensing area of the steering wheel is not unique, and the placement The states are also different. Therefore, the initial threshold of the sensing units in the steering wheel sensing area is set according to the distribution position of the sensing units. For example, in the three-zone scheme, the front left and right sensing units in the steering wheel sensing area The initial thresholds are set to be the same, and the initial thresholds of the sensing units on the back side are greater than those of the front sensing units. This setting is made according to the characteristics of the user's grasping of the steering wheel. The user's grasping gesture is generally that the thumb is on the front of the steering wheel, and the rest of the fingers are on the back of the steering wheel, so the initial threshold is set according to the distribution of the sensing units.

S120. Within the first preset temperature range, acquire a first sensing signal corresponding to each test temperature according to the temperature step interval;

Specifically, within the first preset temperature range, the first sensing signal of the sensing unit under the influence of temperature is measured to facilitate subsequent temperature compensation, wherein the first preset temperature range is set according to the user's use temperature, It is necessary to fully cover the user's operating temperature to avoid single temperature collection, which will affect the final calibration accuracy. Exemplarily, the first preset temperature is set in the temperature range of -40°C to 85°C, and the temperature step interval is every 5°C, with a total of 25 stages. When measuring each temperature stage, the steering wheel needs to be left still for a preset time. Set the time to ensure that the steering wheel reaches the temperature condition and ensure the accuracy of data collection.

S130. Determine a temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal, and the test temperature;

Specifically, under different working environment temperatures, there will be a certain error between the actual output value and the theoretical output value of the sensing unit, that is, a temperature error. In order to eliminate or reduce this temperature error, temperature compensation is required. For example, by measuring method, measure the first induction signal corresponding to the test temperature, obtain the curve relationship between the first induction signal and the test temperature, and compensate the initial threshold value according to the deviation between the first induction signal and the initial threshold value, and obtain the compensated intermediate threshold value as Trigger criteria for hand-off detection for subsequent detections.

S140. Within the second preset temperature range, perform different working condition tests on different types of test objects at each test temperature to obtain a second induction signal;

Specifically, the second preset temperature range is the temperature simulation range when the steering wheel is in use. Exemplarily, the second preset temperature range can be between 23°C and 75°C, and the test temperature is set to 23°C→-30°C→ 75°C → 40°C → 23°C in a cycle, and each temperature test is carried out under the same humidity. It should be noted that the specific value of each temperature can be adjusted according to the test requirements. The test object refers to the user group, wherein the contact area of the hands of different user groups holding the steering wheel is different, so it is necessary to classify the test object. Exemplarily, the classification conditions can be parameters such as user age, gender, and weight. In order to test each type of test object. The working conditions of the test can be divided into multiple groups of working conditions such as not wearing gloves, wearing thin gloves, wearing thread gloves, wearing leather gloves, grasping with one hand and grasping in different positions with both hands according to the actual usage of the user. Exemplary, the test process: 5 groups of steering wheels are measured at each temperature, and the test objects are classified by body weight. Among them, each steering wheel requires a group of people with a weight of 46.7-51.25 kg, a group of people with a weight of 68.18-86.36 kg, and a group of people with a weight of >86.36 kg. The crowd was tested for gripping the steering wheel separately. The gripping test conditions included not wearing gloves, wearing thin gloves, wearing wire gloves, and wearing leather gloves. Each steering wheel needs to be tested with 10 points (8 single-handed points and 2 double-handed points). Point <2, 8 o'clock & 4, 6 o'clock>). Therefore, the second induction signal can be obtained by performing different working condition tests on different types of test objects at each test temperature.

S150. Determine a calibration threshold according to the intermediate threshold, the second sensing signal, and the test temperature.

Specifically, the relationship curve is obtained according to the second sensing signal and the test temperature, wherein the data of the second sensing signal greater than the middle threshold is the grasping state, if the corresponding grasping working condition, the detected second sensing signal does not reflect the corresponding If the grasping state is in the grip state, the intermediate threshold value is compensated according to the second sensing signal, and the calibration threshold value is finally determined. Exemplarily, for example, the intermediate threshold value is 100 at 23°C, and the measured second If the sensing signal is 90, adjust the middle threshold of the corresponding crowd and temperature under the working condition to determine the calibration threshold. Wherein, as an example, the second sensing signal corresponding to the crowd and temperature under the working condition may also be compensated so that the second sensing signal reaches a calibrated threshold.

The technical solution provided by the embodiment of the present invention improves the reliability of the initial threshold by setting the initial threshold according to the position of the sensing unit in the sensing area of the steering wheel, and uses a wider first preset temperature range to perform temperature compensation on the sensing unit, covering All user temperature ranges will be more accurate than single temperature calibration data. Within the second preset temperature range, the same type of test object and different working conditions can be distinguished, and the second induction signal can be obtained by testing at each test temperature. , using the second induction signal, the intermediate threshold after temperature compensation and the test temperature to determine the calibration threshold, thus covering the calibration thresholds of different test objects, different temperatures, different working conditions, etc., improving the accuracy of hand-off detection and driving Drive safely.

Optionally, the temperature-compensated intermediate threshold is determined according to the initial threshold, the first sensing signal and the test temperature, including:

Draw a temperature compensation calibration curve according to the test temperature and the first induction signal;

Determine the temperature compensation data according to the temperature compensation calibration curve and the initial threshold;

The intermediate threshold is obtained from the initial threshold and temperature compensation data.

Specifically, the temperature compensation calibration curve is obtained by summarizing the test temperature and the first induction signal, and the deviation value between the first induction signal of each test temperature and the initial threshold calibration is determined according to the temperature compensation calibration curve, that is, the temperature compensation data, for example, the initial threshold is 50, and the first sensing signal is 40 after measuring at -40°C, then the temperature compensation data can be obtained as 10. The initial threshold is readjusted according to the temperature compensation data, so that the intermediate threshold corresponding to each temperature can be determined.

Optionally, the calibration threshold is determined according to the intermediate threshold, the second sensing signal and the test temperature, including:

determining the correction value according to the second sensing signal corresponding to the test temperature and the intermediate threshold;

The calibration threshold is determined based on the intermediate threshold and the correction value.

Specifically, the relationship curve is obtained according to the second sensing signal and the test temperature, wherein the data of the second sensing signal greater than the middle threshold is the grasping state, if the corresponding grasping working condition, the detected second sensing signal cannot reflect the corresponding grasping state, the correction value is determined according to the second sensing signal to compensate the intermediate threshold, and finally the calibration threshold is determined. Exemplarily, for example, at 23°C, the intermediate threshold is 100, and it is measured that people with a weight of 46.7-51.25kg are not If the second induction signal of wearing gloves is 90, then the correction value is determined according to the second induction signal and the intermediate threshold value, and the intermediate threshold value is corrected by using the correction value. Exemplarily, the sensing signal can also be corrected according to the correction value, so that the measured sensing signal can correctly reflect the hand-off detection situation according to the intermediate threshold, and the intermediate threshold at this time is the calibration threshold.

Optionally, an initial threshold is set according to the position of the sensing unit in the sensing area of the steering wheel, including:

The steering wheel includes a first surface and a second surface, wherein the first surface and the second surface are opposite surfaces; the initial thresholds of the sensing units on the first surface are the same; the initial thresholds of the sensing units on the second surface are the same; the first surface The initial thresholds of the sensing cells on the surface are different from the initial thresholds of the sensing cells on the second surface.

Specifically, the opposite surface of the steering wheel is the front surface facing the user, and the opposite surface is the back surface. Exemplarily, the first surface is the front surface, and the second surface is the back surface. A corresponding sensing unit can be set under the leather covering the steering wheel in the steering wheel sensing area, and the sensing unit detects that the driver's hand is in the steering wheel sensing area. The sensing signal changes, and the sensing signal is used to reflect the touch state of the driver's hand. When calibrating the hand-off detection function, first set the initial threshold for the sensing unit as the initial standard for the subsequent touch state sensing of the driver's hand. Since the position of the driver's hand in the sensing area of the steering wheel is not unique, and the placement The states are also different. Therefore, the initial threshold of the sensing units in the steering wheel sensing area is set according to the distribution position of the sensing units. For example, in the three-zone scheme, the front left and right sensing units in the steering wheel sensing area The initial thresholds are set to be the same, and the initial thresholds of the sensing units on the back side are greater than those of the front sensing units. This setting is made according to the characteristics of the user's grasping of the steering wheel. The user's grasping gesture is generally that the thumb is on the front of the steering wheel, and the rest of the fingers are on the back of the steering wheel, so the initial threshold is set according to the distribution of the sensing units.

Fig. 3 is a flow chart of another calibration method for the steering wheel hand-off detection function provided by the embodiment of the present invention. Referring to Fig. 3, the method steps include:

S210. Set an initial threshold according to the position of the sensing unit in the sensing area of the steering wheel;

S220. Within the first preset temperature range, acquire the first sensing signal corresponding to each test temperature according to the temperature step interval;

S230. Determine a temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal, and the test temperature;

S240. Verify whether the intermediate threshold eliminates the influence of different test temperatures on the induction signal; if the verification result is qualified, lock the temperature compensation data; if not, adjust the temperature compensation data, and repeat the verification until the verification result is qualified.

Specifically, according to the corresponding intermediate threshold value of each temperature point after supplementation, a temperature compensation verification test is carried out to verify whether the temperature compensation data can eliminate the influence of different temperatures on capacitive sensing. If the verification result is qualified, lock the temperature compensation data, if not, adjust the temperature compensation data, and then adjust the intermediate threshold, and then repeat the verification test until the different test temperatures have no effect on the induction signal or the value of the effect is within the normal range .

S250. Within the second preset temperature range, perform different working condition tests on different types of test objects at each test temperature to obtain a second induction signal;

S260. Determine a calibration threshold according to the intermediate threshold, the second sensing signal, and the test temperature.

Fig. 4 is a flow chart of another method for calibrating the steering wheel hand-off detection function provided by the embodiment of the present invention. Referring to Fig. 4, the method steps include:

S310. Set an initial threshold according to the position of the sensing unit in the sensing area of the steering wheel;

S320. Within the first preset temperature range, acquire the first sensing signal corresponding to each test temperature according to the temperature step interval;

S330. Determine a temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal, and the test temperature;

S340. Verify whether the intermediate threshold eliminates the influence of different test temperatures on the induction signal; if the verification result is qualified, lock the temperature compensation data; if not, adjust the temperature compensation data, and repeat the verification until the verification result is qualified.

S350. Within the second preset temperature range, perform different working condition tests on different types of test objects at each test temperature to obtain a second induction signal;

S360. Determine a calibration threshold according to the intermediate threshold, the second sensing signal, and the test temperature.

S370. Verify the calibration threshold according to different test object types.

Specifically, the calibration threshold is input into the control chip of the steering wheel, and the verification of the user's accidental touch of the steering wheel (knee, water bottle) is added to the verification, the purpose is to verify the validity, accuracy and anti-mis-touch performance of the calibration results. At the same time, verify the reliability of the hardware in the control chip. If the test result is qualified, the calibration ends and the calibration threshold is determined. Otherwise, it is necessary to continue to adjust the calibration threshold and write it into the control chip, and then perform the environmental verification test and water spray test again until the test result is qualified to determine the calibration threshold.

Fig. 5 is a flow chart of another method for calibrating the steering wheel hand-off detection function provided by the embodiment of the present invention. Referring to Fig. 5, the method steps include:

Calibration starts, S410, the sensing unit sets an initial threshold. S420. Perform temperature compensation on the sensing unit. Within the first preset temperature range, obtain the first sensing signal corresponding to each test temperature according to the temperature step interval. S430. Determine the compensated intermediate threshold and write it into the control chip of the steering wheel. S440, verify whether the intermediate threshold eliminates the influence of different test temperatures on the induction signal, S450, if the verification result is qualified, then lock the temperature compensation data and write it into the control chip; S460, if it is unqualified, adjust the temperature compensation data, and repeat the verification until The verification result is qualified. S470. Acquisition of environmental data. Within the second preset temperature range, conduct different working condition tests on different types of test objects at each test temperature to obtain a second induction signal. S480. Set a water spray test to verify hardware reliability, S490 1. Determine the calibration threshold according to the intermediate threshold, the second sensing signal and the test temperature, and write it into the control chip. S500, verifying the calibration threshold, adding water spray verification and false touch verification at the same time, the purpose is to verify the validity, accuracy and anti-mis-touch performance of the calibration results, and at the same time verify the reliability of the hardware in the control chip. If the test result is qualified, then S510, the calibration ends, and the calibration threshold is determined. Otherwise, the S520 needs to continue to adjust the calibration threshold and write it into the control chip, and then conduct the environmental verification test and water spray test again until the test result is qualified to determine the calibration threshold.

Optionally, the classification conditions for different types of test objects include at least one of weight, age and gender of the test population. Specifically, in order to ensure that the test objects cover a wide range of data, user group classification can be completed according to any one or more conditions. Exemplarily, in the embodiment of the present invention, user groups are distinguished according to body weight, such as people with a weight of 46.7-51.25kg, people with a weight of 68.18-86.36kg, and people with a weight >86.36kg. Different weights can reflect the difference between the palm and the steering wheel sensing area. contact area to meet the needs of test object classification.

Optionally, the first preset temperature range is -40°C to 85°C. Specifically, temperature compensation is performed on the sensing unit, wherein the first preset temperature range set by the temperature compensation is wider than that of a single temperature calibration, covering the temperature range of -40°C to 85°C, which can completely cover the temperature range of all users temperature range

Optionally, the sensing unit is at least one of a capacitance unit, a pressure unit and a camera unit.

Specifically, according to the type of the sensing unit, correspondingly measure the first sensing signal and the second sensing signal, the calibration threshold of the sensing unit can be determined according to the calibration method of any embodiment of the present invention, so as to be applicable to the image recognition of the camera unit, the capacitance unit of the steering wheel, etc. Hand release detection by means of induction and pressure unit monitoring.

The embodiment of the present invention also provides an electronic device, and the electronic device includes:

at least one processor; and

memory communicatively coupled to at least one processor; wherein,

The memory stores a computer program that can be executed by at least one processor, and the computer program is executed by at least one processor, so that the at least one processor can execute any steering wheel hand-off detection function calibration method in the embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. Electronic device is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other suitable computers. Electronic devices may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (eg, helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are by way of example only, and are not intended to limit implementations of the inventions described and/or claimed herein.

As shown in FIG. 6, the electronic device 10 includes at least one processor 11, and a memory connected in communication with the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores There is a computer program executable by at least one processor, and the processor 11 can operate according to a computer program stored in a read-only memory (ROM) 12 or loaded from a storage unit 18 into a random access memory (RAM) 13. Various appropriate actions and processes are performed. In the RAM 13, various programs and data necessary for the operation of the electronic device 10 are also stored. The processor 11 , ROM 12 , and RAM 13 are connected to each other through a bus 14 . An input/output (I/O) interface 15 is also connected to the bus 14 .

Multiple components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, and the like. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices through a computer network such as the Internet and/or various telecommunication networks.

Processor 11 may be various general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing units (CPUs), graphics processing units (GPUs), various dedicated artificial intelligence (AI) computing chips, various processors that run machine learning model algorithms, digital signal processing processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A method for calibration of steering wheel hand-off detection function, characterized in that, comprising: Set the initial threshold according to the position of the sensing unit in the steering wheel sensing area; Within the first preset temperature range, the first sensing signal corresponding to each test temperature is obtained according to the temperature step interval; determining a temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal, and the test temperature; Within the second preset temperature range, different types of test objects are tested under different working conditions at each test temperature to obtain a second induction signal; A calibration threshold is determined according to the intermediate threshold, the second sensing signal and the test temperature. 2. The steering wheel hand-off detection function calibration method according to claim 1, wherein the temperature-compensated intermediate threshold is determined according to the initial threshold, the first sensing signal and the test temperature, comprising: Draw a temperature compensation calibration curve according to the test temperature and the first induction signal; determining temperature compensation data according to the temperature compensation calibration curve and the initial threshold; An intermediate threshold is obtained from the initial threshold and the temperature compensation data. 3. The method for calibrating the steering wheel hand-off detection function according to claim 1, wherein the calibration threshold is determined according to the intermediate threshold, the second sensing signal and the test temperature, comprising: determining a correction value according to the second sensing signal corresponding to the test temperature and the intermediate threshold; The calibration threshold is determined according to the intermediate threshold and the correction value. 4. The method for calibrating the hand-off detection function of the steering wheel according to claim 1, wherein the initial threshold is set according to the position of the sensing unit in the sensing area of the steering wheel, comprising: The steering wheel includes a first surface and a second surface, wherein the first surface and the second surface are opposite surfaces; the initial thresholds of the sensing units on the first surface are the same; the second surface The initial thresholds of the sensing units on the first surface are the same; the initial thresholds of the sensing units on the first surface are different from those of the sensing units on the second surface. 5. The steering wheel hand-off detection function calibration method according to claim 2, characterized in that, after determining the temperature-compensated intermediate threshold according to the initial threshold, the first sensing signal and the test temperature, further comprising: : Verifying whether the intermediate threshold eliminates the influence of different test temperatures on the induction signal; if the verification result is qualified, locking the temperature compensation data; If it is unqualified, the temperature compensation data is adjusted, and the verification is repeated until the verification result is qualified. 6. The steering wheel hand-off detection function calibration method according to claim 1, characterized in that, after determining the calibration threshold according to the second sensing signal and the test temperature, further comprising: The calibration threshold is verified according to different test object types. 7. The method for calibrating the steering wheel hand-off detection function according to any one of claims 1-6, wherein the classification conditions of the different types of test objects include at least one of the weight, age and gender of the test population. 8. The method for calibrating the steering wheel hand-off detection function according to any one of claims 1-6, wherein the first preset temperature range is -40°C to 85°C. 9. The method for calibrating the steering wheel hand-off detection function according to any one of claims 1-6, wherein the sensing unit is at least one of a capacitor unit, a pressure unit and a camera unit. 10. An electronic device, characterized in that the electronic device comprises: at least one processor; and a memory communicatively coupled to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, the computer program is executed by the at least one processor, so that the at least one processor can perform any one of claims 1-9 The method for calibrating the hands-off detection function of the steering wheel.

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