A method, system, storage medium and intelligent terminal for anti-interference of a torque sensor

Abstract

The present application relates to an anti-interference method, system, storage medium and intelligent terminal for a torque sensor, belonging to the field of torque sensors. The method includes obtaining an indication signal; when the indication signal is a preset installation signal, controlling the rotating part of the anti-interference cover to open and controlling the dust cover to open; when the indication signal is a preset installation completion signal, controlling the rotating part to close; when the indication signal is a preset removal signal, controlling the rotating part to open; when the indication signal is a preset removal completion signal, controlling the rotating part to close and controlling the dust cover to close. The present application has the effect of ensuring the convenient removal of the torque sensor while performing electromagnetic shielding on the torque sensor by setting a metal anti-interference cover and adopting different opening and closing schemes under different circumstances, so as to avoid the interference of the external magnetic field on the torque sensor and improve the accuracy of data sensing of the torque sensor.

Description

Technical Field

[0001] The present application relates to the field of torque sensors, and in particular to a method and system for anti-interference of torque sensors, a storage medium, and an intelligent terminal. Background Art

[0002] Torque sensors are widely used in automobiles, mainly for monitoring the torque output of engines, transmissions, and other drive systems. A torque sensor is installed on the output shaft of the engine to monitor the torque generated by the engine. A torque sensor is installed on the input shaft of an automatic transmission or a manual transmission to monitor the torque transmitted from the engine to the transmission. In some advanced vehicles, torque sensors can be installed on certain components of the suspension system to monitor the force on the suspension system, thereby optimizing the performance of the suspension system.

[0003] Refer to Figure 1 , a torque sensor includes a housing 1, an output shaft 11, a turntable 12, a first magnet 14, and a main board 15. The output shaft 11 and the first magnet 14 are both rotatably connected to the housing 1, the main board 15 is fixedly connected to the housing 1, a second magnet 16 facing the first magnet 14 is also provided on the main board 15, the first magnet 14 and the second magnet 16 cooperate to form a uniform magnetic field, and the first magnet 14 and the output shaft 11 are in gear transmission so that the magnetic field changes. The turntable 12 is fixedly connected to the output shaft 11, and a plurality of cutting pieces 13 are provided on the turntable 12 in the circumferential direction. When the turntable 12 rotates, the cutting pieces 13 sequentially cut the magnetic field to change the magnetic flux received on the main board 15, so that the magnetic flux is converted into torque by the control system on the main board 15 for output. A connection port 17 connected to the outside is provided on the housing 1, and the connection port 17 is electrically connected to the main board 15 to transmit the torque to the vehicle's central control system through the connection port 17.

[0004] In the prior art, there are the following problems. The torque sensor converts the magnetic field cutting into torque for output, and is easily affected by external magnetic fields, resulting in inaccurate torque on the torque sensor, and there is still room for improvement. Summary of the Invention

[0005] In order to improve the problem that the torque sensor converts the magnetic field cutting into torque for output and is easily affected by external magnetic fields, resulting in inaccurate torque on the torque sensor, the present application provides a method and system for anti-interference of torque sensors, a storage medium, and an intelligent terminal.

[0006] In a first aspect, the present application provides a method for anti-interference of a torque sensor, adopting the following technical solution:

[0007] A method for anti-interference of a torque sensor includes:

[0008] Obtain an indication signal;

[0009] When the indication signal is a preset installation signal, control the rotating part of the anti-interference cover to open and control the dust cover to open. The anti-interference cover includes a mounting post and two rotating parts. The two rotating parts are rotatably connected to the mounting post. A cavity for shielding the torque sensor is formed by the cooperation of the two rotating parts. A connection port for exposing the connection port is provided on one of the rotating parts. A dust cover for covering the connection port is rotatably connected to the rotating part provided with the connection port. A negative electrode of an automotive battery or a ground wire of the chassis is provided on the rotating part;

[0010] When the indication signal is a preset installation completion signal, control the rotating part to close;

[0011] When the indication signal is a preset removal signal, control the rotating part to open;

[0012] When the indication signal is a preset removal completion signal, control the rotating part to close and control the dust cover to close.

[0013] By adopting the above technical solution, by setting a metal anti-interference cover and then adopting different opening and closing solutions under different circumstances, the torque sensor can be conveniently taken out while being electromagnetically shielded to avoid interference from external magnetic fields on the torque sensor, thereby improving the accuracy of data sensing of the torque sensor.

[0014] Optionally, it further includes a subsequent method for controlling the rotating part to close when the indication signal is an installation completion signal. This method includes:

[0015] Perform a torque detection test step, and the torque detection test step includes: obtain the shielded torque; obtain the open torque after controlling the rotating part to open;

[0016] When the shielded torque and the open torque are different, control the rotating part to close;

[0017] When the shielded torque and the open torque are the same, keep the rotating part open and obtain the current torque curve;

[0018] When a preset mutation point appears in the current torque curve, control the rotating part to close;

[0019] When no mutation point appears in the current torque curve, continue to keep the rotating part open until a mutation point appears or a new indication signal appears.

[0020] By adopting the above technical solution, the torque is detected by opening and closing. If the torque is different, it indicates that there is an external interfering magnetic field, and then it is closed. If the torque is the same, it indicates that there is no external interfering magnetic field, and then it can be opened. While ensuring the anti-interference effect, it is as convenient as possible for the staff to take it out; on the other hand, it also prevents the internal heat from being too high and affecting the operation of the torque sensor.

[0021] Optionally, the method for continuously maintaining the opening of the rotating part when there is no mutation point in the current torque curve includes:

[0022] Obtain the service life of the torque sensor and the current operating time of the torque sensor;

[0023] Determine the working degree based on the current operating time of the torque sensor and the service life of the torque sensor;

[0024] Calculate the current opening angle based on the working degree and the preset fully open angle;

[0025] Control the rotating part to maintain the opening according to the current opening angle.

[0026] By adopting the above technical solution, when it is closer to the service life, it indicates that it is more likely to be replaced at this time, so the opening degree is higher, improving the opening efficiency. And the closer it is to the initial installation stage, the less likely it is to have problems and the less likely it is to be replaced, so the possibility of taking it out is lower. Therefore, at this time, more shielding is needed, and it is closer to the closed state, improving the intelligence of the opening of the anti-interference cover without external magnetic field interference.

[0027] Optionally, it also includes another method for controlling the rotating part to maintain the opening after determining the working degree. This method includes:

[0028] Obtain the ambient temperature and the internal temperature when the working degree is less than the preset damage judgment critical degree;

[0029] Calculate the temperature difference based on the internal temperature and the ambient temperature;

[0030] When the temperature difference is greater than the preset critical value for rapid heat dissipation difference, control the rotating part to open according to the preset maximum heat dissipation angle;

[0031] When the temperature difference is less than the critical value for rapid heat dissipation difference, control the rotating part to open according to the preset heat exchange opening angle;

[0032] When the working degree is greater than the damage judgment critical degree, control the rotating part to open according to the current opening angle.

[0033] By adopting the above technical solutions, in the stage where there is no damage at the front, considering the heat dissipation requirements, if the internal temperature is high and heat dissipation is needed, different angles need to be set. If there is no heat dissipation requirement, a small opening is made to prevent foreign objects from entering the outside; when damage occurs, a large opening is made, which improves the intelligence of the anti-interference cover opening without external magnetic field interference.

[0034] Optionally, the method for controlling the rotating part to open at the maximum heat dissipation angle includes:

[0035] Continue to calculate the temperature difference;

[0036] When the temperature difference is less than the preset damage critical temperature difference, control the rotating part to open at the maximum heat dissipation angle;

[0037] When the temperature difference is greater than the damage critical temperature difference, determine the change rate based on the temperature difference;

[0038] Calculate the damage temperature difference based on the internal temperature and the damage critical temperature;

[0039] Calculate the change duration based on the temperature difference, the damage critical temperature difference and the change rate;

[0040] When the change duration is less than the preset short-time critical duration, control the rotating part to open at the maximum heat dissipation angle;

[0041] When the change duration is greater than the short-time critical duration, control the rotating part to open at the maximum heat dissipation angle and shake according to the preset heat dissipation shaking amplitude.

[0042] By adopting the above technical solutions, if the heat dissipation requirement is large and simply opening the shielding cover cannot meet the requirement of rapid heat dissipation, then shaking heat dissipation is increased to make the air start to circulate, thereby improving the heat dissipation efficiency of the anti-interference cover.

[0043] Optionally, it further includes a method for checking the current opening angle, and this method includes:

[0044] Control the rotating part to close and obtain the actual rotation angle;

[0045] When the actual rotation angle no longer changes, compare the actual rotation angle with the preset zero angle;

[0046] When the actual rotation angle is the zero angle, normally output the current opening angle;

[0047] When the actual rotation angle is not the zero angle, correct the actual rotation angle based on the zero angle.

[0048] By adopting the above technical solution, the opening angle can be verified by fitting the output shaft of the torsion sensor. When the rotation no longer occurs during the closing process, it indicates that the torsion sensor has been fitted at this time. If the angle is not zero at this time, it means that the angle is incorrect. If it is zero, it means that the angle is correct, improving the accuracy of angle verification.

[0049] Optionally, it further includes a subsequent method for maintaining the opening of the rotating part when the shielding torsion and the opening torsion are the same. This method includes:

[0050] Obtain the current vehicle speed;

[0051] Close the rotating part when the current vehicle speed is zero and obtain the current torsion curve and the current time;

[0052] Output a preset shielding cover failure signal when the shielding torsion corresponding to the current time in the current torsion curve is not zero;

[0053] Determine the torsion change speed based on the opening torsion when the shielding torsion corresponding to the current time in the current torsion curve is zero;

[0054] Maintain the opening of the rotating part when the torsion change speed is zero;

[0055] Output a shielding cover failure signal when the torsion change speed is not zero.

[0056] By adopting the above technical solution, when the torques are the same, could it be the reason for the electromagnetic field failure? At this time, the internal magnetic field is static, so no torque will be generated. If a torque is generated at this time, it means that there is a changing magnetic field outside, causing the situation of cutting the magnetic field, thus generating torque. Therefore, the shielding cover has failed at this time, improving the efficiency of shielding cover fault identification.

[0057] In a second aspect, the present application provides a torsion sensor anti-interference system, adopting the following technical solution:

[0058] A torsion sensor anti-interference system includes:

[0059] An acquisition module for acquiring an indication signal, shielding torsion, opening torsion, ambient temperature, internal temperature, actual rotation angle, current vehicle speed, and current time;

[0060] A memory for storing the program of the control method of any of the above torsion sensor anti-interference methods;

[0061] A processor, and the program in the memory can be loaded and executed by the processor to implement the control method of any of the above torsion sensor anti-interference methods.

[0062] By adopting the above technical solution, by setting a metal anti-interference cover and then adopting different opening and closing solutions under different circumstances, the torque sensor can be conveniently taken out while being electromagnetically shielded to avoid interference of the external magnetic field on the torque sensor, thereby improving the accuracy of data sensing of the torque sensor.

[0063] In a third aspect, the present application provides an intelligent terminal, adopting the following technical solution:

[0064] The intelligent terminal includes a memory and a processor, and a computer program capable of being loaded and executed by the processor for any one of the above torque sensor anti-interference methods is stored on the memory.

[0065] By adopting the above technical solution, by setting a metal anti-interference cover and then adopting different opening and closing solutions under different circumstances, the torque sensor can be conveniently taken out while being electromagnetically shielded to avoid interference of the external magnetic field on the torque sensor, thereby improving the accuracy of data sensing of the torque sensor.

[0066] In a fourth aspect, the present application provides a computer storage medium, which can store corresponding programs and has the characteristics of fast large-data interaction in memory.

[0067] The computer-readable storage medium adopts the following technical solution:

[0068] The computer-readable storage medium stores a computer program capable of being loaded and executed by the processor for any one of the above torque sensor anti-interference methods.

[0069] By adopting the above technical solution, by setting a metal anti-interference cover and then adopting different opening and closing solutions under different circumstances, the torque sensor can be conveniently taken out while being electromagnetically shielded to avoid interference of the external magnetic field on the torque sensor, thereby improving the accuracy of data sensing of the torque sensor.

[0070] In summary, the present application includes at least the following beneficial technical effects:

[0071] By setting a metal anti-interference cover and then adopting different opening and closing solutions under different circumstances, the torque sensor can be conveniently taken out while being electromagnetically shielded to avoid interference of the external magnetic field on the torque sensor, thereby improving the accuracy of data sensing of the torque sensor;

[0072] By opening and closing to detect whether the torque is different. If the torque is different, it indicates that there is an external interference magnetic field;

[0073] If there is no external interfering magnetic field, it can be opened, and on the premise of ensuring the anti-interference effect, it is as convenient as possible for the staff to take it out;

[0074] If there is no external interfering magnetic field, it can be opened to prevent the internal heat from being too high and affecting the operation of the torque sensor. Description of the Drawings

[0075] Figure 1 It is an exploded view of a torque sensor in the related art.

[0076] Figure 2 It is a flowchart of a method for anti-interference of a torque sensor in an embodiment of the present application.

[0077] Figure 3 It is a structural schematic diagram of an anti-interference cover and a torque sensor in an embodiment of the present application.

[0078] Figure 4 It is a flowchart of a subsequent method for controlling the closing of the rotating part when the indication signal is the installation completion signal in an embodiment of the present application.

[0079] Figure 5 It is a flowchart of a method for continuously maintaining the opening of the rotating part when there is no mutation point in the current torque curve in an embodiment of the present application.

[0080] Figure 6 It is a flowchart of another method for controlling the rotating part to maintain the opening after determining the working degree in an embodiment of the present application.

[0081] Figure 7 It is a flowchart of a method for controlling the rotating part to open at the maximum heat dissipation angle in an embodiment of the present application.

[0082] Figure 8 It is a flowchart of a method for checking the current opening angle in an embodiment of the present application.

[0083] Figure 9 It is a flowchart of a subsequent method for maintaining the opening of the rotating part when the shielding torque is the same as the open torque in an embodiment of the present application.

[0084] Figure 10 It is a system module diagram of a method for anti-interference of a torque sensor in an embodiment of the present application.

[0085] Description of the reference numerals: 1. Housing; 11. Output shaft; 12. Turntable; 13. Cutting piece; 14. First magnet; 15. Main board; 16. Second magnet; 17. Connection port; 2. Mounting post; 21. Rotating part; 22. Cavity; 23. Connection port; 24. Dust cover; 25. Ground wire. Detailed Description of the Invention

[0086] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the following further details the present application in conjunction with the accompanying Figures 2 - 10 drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0087] An embodiment of the present application discloses an anti-interference method for a torque sensor. Referring to Figure 2 , an anti-interference method for a torque sensor includes:

[0088] Step 100: Obtain an indication signal.

[0089] The indication signal is a signal that requires an operation on the protective cover and is manually input. The obtaining method can be to manually control the corresponding button to be pressed.

[0090] Step 101: When the indication signal is a preset installation signal, control the rotating part 21 to open and control the dust cover 24 to open.

[0091] Referring to Figure 3 , the anti-interference cover includes a mounting post 2 and two rotating parts 21. The two rotating parts 21 are rotatably connected to the mounting post 2. The two rotating parts 21 cooperate to form a cavity 22 that shields the torque sensor. One of the rotating parts 21 has a connection port 23 that exposes the connection port 17, so as to facilitate the data cable to be inserted into the connection port 17 through the connection port 23. A dust cover 24 that covers the connection port 23 is rotatably connected to the rotating part 21 having the connection port 23, so that when the connection port 17 is not in use, the cavity 22 formed by the cooperation of the rotating parts 21 is closed. The rotating part 21 has a ground wire 25 connected to the negative pole of the vehicle battery or the chassis, so as to better guide the extra current to the ground and enhance the shielding ability.

[0092] The installation signal is a signal that requires the installation of the torque sensor. When the indication signal is the installation signal, avoidance is required, so both of them are fully opened at this time.

[0093] It should be noted that the rotating part 21 can be controlled by any one of the drive sources, for example: the motor drives the gear, and then the gear drives the rotating part to rotate.

[0094] Step 102: When the indication signal is a preset installation completion signal, control the rotating part 21 to close.

[0095] The installation completion signal is a signal that the torque sensor has been installed. When the installation has been completed, it means that the installation has been completed at this time. In order to prevent external interference with the torque sensor, the rotating part 21 is closed at this time. Since the data cable is connected through the connection port 23 and the connection port 17 at this time, the dust cover 24 is not closed at this time.

[0096] Step 103: Control the rotating part 21 to open when the indication signal is a preset taking-out signal.

[0097] The taking-out signal is a signal for taking out the torque sensor. When it is necessary to take out the torque sensor, the rotating part 21 can be opened.

[0098] Step 104: Control the rotating part 21 to close and control the dust-proof cover 24 to close when the indication signal is a preset taking-out completion signal.

[0099] The taking-out completion signal is a signal indicating that the torque sensor has been taken out completely. When it has been taken out completely, the rotating part 21 can be covered and the dust-proof cover 24 can be covered at this time, so that the entire anti-interference cover is completely enclosed and not easily contaminated by dust.

[0100] Refer to Figure 4 , and it also includes a subsequent method of controlling the rotating part 21 to close when the indication signal is an installation completion signal. This method includes:

[0101] Step 200: Perform a torque detection test step.

[0102] The torque detection test step is a test step for determining whether there is magnetic field interference from the outside and detecting the torque.

[0103] The torque detection test step includes:

[0104] Step 2000: Obtain the shielded torque.

[0105] The shielded torque is the internal torque when the anti-interference cover covers the torque sensor and completely shields the external magnetic field. The obtaining method is to directly read the data output on the torque sensor. It should be noted here that at this time, the rotating part 21 is closed and the dust-proof cover 24 is open.

[0106] Step 2001: Control the rotating part 21 to open and then obtain the open torque.

[0107] The open torque is the internal torque when the anti-interference cover does not cover the torque sensor and is completely open, if there is a magnetic field from the outside. The obtaining method is to directly read the data output on the torque sensor.

[0108] Step 201: Control the rotating part 21 to close when the shielded torque and the open torque are different.

[0109] When the shielded torque and the open torque are different, it indicates that the cut magnetic fields are different. Therefore, there is a magnetic field from the outside at this time, so it is necessary to shield the external interference magnetic field and control the rotating part 21 to close.

[0110] Step 202: Keep the rotating part 21 open when the shielding torque and the open torque are the same, and obtain the current torque curve.

[0111] The current torque curve is a curve of the output torque and time. The obtaining method here is to draw according to the torque and time obtained at each moment.

[0112] When the shielding torque and the open torque are the same, it means that the torque is the same and the magnetic field is the same at this time, so there is no external magnetic field. However, since it is impossible to detect at every moment, and generally the torque will change instantaneously when a magnetic field appears, it is only necessary to monitor the torque curve.

[0113] Step 203: Control the rotating part 21 to close when a preset mutation point appears in the current torque curve.

[0114] The mutation point is the point where the curvature of the curve changes abruptly compared with the previous curve, or the coordinate points are completely different. When a mutation point appears, it means that there is an abnormality at this time, and it is very likely that there is an external interfering magnetic field, so control the rotating part 21 to close.

[0115] Step 204: Keep the rotating part 21 open until a mutation point appears or a new indication signal appears when no mutation point appears in the current torque curve.

[0116] When no mutation point appears in the current torque curve, it means that there is no external interfering magnetic field at this time, so the rotating part 21 can continue to be kept open.

[0117] Refer to Figure 5 , the method of keeping the rotating part 21 open when no mutation point appears in the current torque curve includes:

[0118] Step 300: Obtain the life of the torque sensor and the current operating time of the torque sensor.

[0119] The life of the torque sensor is the service life of the torque sensor without being affected by the outside world. It is input by the staff in this field after analyzing according to the operation manual provided by the manufacturer and their respective experiences. The current operating time of the torque sensor is the length of time that the current torque sensor has been working. It is obtained by starting to time when the vehicle starts to be used after the torque sensor is installed in this position.

[0120] Step 301: Determine the working degree based on the current operating time of the torque sensor and the life of the torque sensor.

[0121] The working degree is the degree of the life that has been worked now. The determination method here is to divide the current operating time of the torque sensor by the life of the torque sensor.

[0122] Step 302: Calculate the current opening angle based on the working degree and the preset fully open angle.

[0123] The fully open angle is the angle when it is fully opened. Here, when the operating time of the current torque sensor is the same as the duration corresponding to the service life of the torque sensor, it means that the usage has reached the service life, and then it needs to be scrapped to avoid abnormal situations. The current opening angle is the angle that can be opened now, approaching full opening or closing.

[0124] Step 303: Control the rotating part 21 to maintain the opening according to the current opening angle.

[0125] When approaching the service life, it means that replacement is more likely at this time, so the opening degree is higher, improving the opening efficiency. And when approaching the initial installation stage, problems are less likely to occur and replacement is less likely, so the possibility of removal is lower. Therefore, shielding is more needed at this time, and it is closer to the closed state, improving the intelligence of the anti-interference cover opening without external magnetic field interference.

[0126] Refer to Figure 6 , and it also includes another method of controlling the rotating part 21 to maintain the opening after determining the working degree. This method includes:

[0127] Step 400: Obtain the ambient temperature and the internal temperature when the working degree is less than the preset damage judgment critical degree.

[0128] The damage judgment critical degree is the degree at which it may be damaged at any time if it exceeds this value. Here, this degree is determined by humans based on the long-term usage process. The ambient temperature is the temperature of the environment outside the anti-interference cover. The internal temperature is the temperature inside the anti-interference cover. Here, both are obtained by temperature sensors.

[0129] Step 401: Calculate the temperature difference based on the internal temperature and the ambient temperature.

[0130] The temperature difference is the difference between the internal and external temperatures. The calculation method is the internal temperature minus the ambient temperature. The purpose of this calculation is to determine the temperature that the torque sensor still rises under the influence of the environment. On the one hand, if the ambient temperature is high, and it still rises on this basis, it means that the internal temperature is continuing to rise; similarly, if the ambient temperature is low, it will be affected by the environment, and even if the generated heat is high, it will not make the internal environment high.

[0131] Step 402: When the temperature difference is greater than the preset critical value of the required rapid heat dissipation difference, control the rotating part 21 to open according to the preset maximum heat dissipation angle.

[0132] The critical value for rapid heat dissipation is the critical value at which the internal temperature is too high and rapid heat dissipation is required to avoid affecting the service life of the torque sensor. It is set manually. The maximum heat dissipation angle is the angle at which the rotating part 21 is fully opened for the fastest heat dissipation. It is measured by the staff in the field according to the actual maximum opening angle. When the temperature difference is greater than the critical value for rapid heat dissipation, it indicates that rapid heat dissipation is required at this time, so it is opened at the maximum heat dissipation angle.

[0133] Step 403: When the temperature difference is less than the critical value for rapid heat dissipation, control the rotating part 21 to open at a preset heat exchange opening angle.

[0134] The heat exchange opening angle is an angle for maintaining the heat exchange function conventionally. Here, this angle is less than the maximum heat dissipation angle. It is set manually. The purpose is to conduct heat exchange.

[0135] Step 404: When the working degree is greater than the critical degree for damage judgment, control the rotating part 21 to open at the current opening angle.

[0136] When the working degree is greater than the critical degree for damage judgment, it may be damaged at any time, so it is opened first at this time.

[0137] Refer to Figure 7 , the method for controlling the rotating part 21 to open at the maximum heat dissipation angle includes:

[0138] Step 500: Continue to calculate the temperature difference.

[0139] Step 501: When the temperature difference is less than the preset critical temperature difference for damage, control the rotating part 21 to open at the maximum heat dissipation angle.

[0140] The critical temperature difference for damage is the temperature difference caused by the fact that although it is opened at the maximum heat dissipation angle, heat is still generated quickly and damaged, and this heat cannot overflow quickly. Here, this difference is the difference exceeding the critical value for rapid heat dissipation, that is, simply meeting the critical value for rapid heat dissipation is not enough, and additional operations are required to further accelerate heat dissipation. When the temperature difference is less than the critical temperature difference for damage, it means that it has not reached the point of damage, and it only needs to be opened at the maximum heat dissipation angle.

[0141] Step 502: When the temperature difference is greater than the critical temperature difference for damage, determine the change rate based on the temperature difference.

[0142] The change rate is the change rate of the temperature difference. The calculation method is to subtract two temperature differences close in time and then divide by the interval time. This interval time is as close as possible, for example: 0.01 seconds.

[0143] Step 503: Calculate the change duration based on the temperature difference, the critical damage temperature difference, and the change rate.

[0144] The change duration is the time required for the temperature difference to change to less than the critical damage temperature difference. The calculation method is obtained by dividing the quotient of the temperature difference minus the critical damage temperature difference by the change rate. Here, the calculated duration is for opening at the maximum heat dissipation angle and then natural heat exchange.

[0145] Step 504: When the change duration is less than the preset short-time critical duration, control the rotating part 21 to open at the maximum heat dissipation angle.

[0146] The short-time critical duration is such that if it is less than this duration, it means that it can quickly return to the time when the temperature difference is less than the critical damage temperature difference. If it is less, it means that damage can be quickly avoided, and no other measures need to be taken. Only control the rotating part 21 to open at the maximum heat dissipation angle.

[0147] Step 505: When the change duration is greater than the short-time critical duration, control the rotating part 21 to open at the maximum heat dissipation angle and shake according to the preset heat dissipation shaking amplitude.

[0148] The heat dissipation shaking amplitude is the amplitude required for shaking to increase air flow in order to increase heat dissipation. It is set artificially. When the change duration is greater than the short-time critical duration, it means that it cannot quickly recover. Then, at this time, not only need to control the rotating part 21 to open at the maximum heat dissipation angle, but also other measures need to be taken. This measure is shaking, so shake according to the heat dissipation shaking amplitude.

[0149] Refer to Figure 8 , and it also includes a method for checking the current opening angle. This method includes:

[0150] Step 600: Control the rotating part 21 to close and obtain the actual rotation angle.

[0151] The actual rotation angle is the angle rotated after closing the rotating part 21. Theoretically, the angle at closing is set to 0.

[0152] Step 601: Compare the actual rotation angle with the preset zero angle when the actual rotation angle no longer changes.

[0153] The zero angle is the angle with an angle of 0. When the actual rotation angle no longer changes, it means that it has abutted against the output shaft 11 of the torsion sensor at this time. Then, theoretically, the actual rotation angle is 0.

[0154] Step 602: Normally output the current opening angle when the actual rotation angle is the zero angle.

[0155] When the actual rotation angle is zero, it indicates that any current opening angle at this time is accurate and the current opening angle can be opened normally.

[0156] Step 603: When the actual rotation angle is not zero, correct the actual rotation angle based on the zero angle.

[0157] When the actual rotation angle is not zero, it indicates that the angle is incorrect at this time and needs to be corrected. Then, correct the actual rotation angle to 0 and start opening again.

[0158] Refer to Figure 9 , and further includes a subsequent method for maintaining the opening of the rotating part 21 when the shielding torque and the opening torque are the same. This method includes:

[0159] Step 700: Obtain the current vehicle speed.

[0160] The current vehicle speed is the speed of the current vehicle, which is obtained by the central control system.

[0161] Step 701: When the current vehicle speed is zero, close the rotating part 21 and obtain the current torque curve and the current time.

[0162] The current torque curve is the curve of the torque inside when the current vehicle speed is zero. The current time is the current time, which is obtained by the timer. Here, the time when the current vehicle speed is zero can be recorded as zero and then start accumulating. When the current vehicle speed is zero, it indicates that the torque sensor does not work at this time, the magnetic field will not be cut, and the anti-interference cover is closed, so the external magnetic field will not interfere with the internal torque sensor. At this time, the torque should be zero. In order to monitor the change of torque in real time, the current torque curve will continue to be obtained at this time.

[0163] Step 702: When the shielding torque corresponding to the current time in the current torque curve is not zero, output a preset shielding cover failure signal.

[0164] The shielding cover failure signal is the signal of the shielding cover failure. Here, this signal can be output in text form. When the shielding torque corresponding to the current time in the current torque curve is not zero, it indicates that there is still a magnetic field being cut and it is interfered by the external magnetic field. Therefore, it shows that the anti-interference cover fails, so the signal of the shielding cover failure is output.

[0165] Step 703: When the shielding torque corresponding to the current time in the current torque curve is zero, continue to maintain the opening of the rotating part 21.

[0166] When the shielding torque corresponding to the current time in the current torque curve is zero, it indicates that at least no problem with the anti-interference cover has been found yet. Then, continue to maintain the opening of the rotating part 21.

[0167] Based on the same inventive concept, an embodiment of the present invention provides an anti-interference system for a torque sensor.

[0168] Referring to Figure 10 , an anti-interference system for a torque sensor includes:

[0169] An acquisition module, configured to acquire an indication signal, a shielding torque, an open torque, an ambient temperature, an internal temperature, an actual rotation angle, a current vehicle speed, and a current time;

[0170] A memory, configured to store a program of a control method for an anti-interference method of a torque sensor;

[0171] A processor, the program in the memory can be loaded and executed by the processor and implement a control method for an anti-interference method of a torque sensor.

[0172] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of each functional module is used as an example. In actual applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the system, device, and unit described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0173] An embodiment of the present invention provides a computer-readable storage medium, storing a computer program that can be loaded and executed by a processor and implement an anti-interference method for a torque sensor.

[0174] Computer storage media include, for example: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0175] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, and a computer program that can be loaded and executed by the processor and implement an anti-interference method for a torque sensor is stored on the memory.

[0176] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited by this. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for preventing interference of a torque sensor, characterized in that: include: Obtaining an indication signal; When the indication signal is a preset installation signal, the rotating part (21) of the anti-interference cover is controlled to open and the dust cover (24) is controlled to open, the anti-interference cover comprises a mounting post (2) and two rotating parts (21), the two rotating parts (21) are rotatably connected to the mounting post (2), the two rotating parts (21) cooperate to form a cavity (22) for shielding the torque sensor, one of the rotating parts (21) is provided with a connection port (23) exposing the connection port (17), the rotating part (21) provided with the connection port (23) is rotatably connected with a dust cover (24) covering the connection port (23), and the rotating part (21) is provided with a grounding wire (25) connected to the negative pole of the vehicle battery or the chassis; When the indication signal is a preset installation completion signal, the rotating part (21) is controlled to close; When the indication signal is a preset removal signal, the rotating part (21) is controlled to open; When the indication signal is a preset removal completion signal, the rotating part (21) is controlled to be closed and the dust cover (24) is controlled to be closed; Also included is a subsequent method for controlling the rotating part (21) to close when the indication signal is an installation completion signal, the method comprising: A torque detection test step is performed, the torque detection test step comprising: obtaining shielding torque; obtaining opening torque after controlling the rotating part (21) to open; When the shielding torque and the opening torque are different, the rotating part (21) is controlled to close; When the shielding torque and the opening torque are the same, the rotating part (21) is kept open, and a current torque curve is obtained; When a preset mutation point appears in the current torque curve, the rotating part (21) is controlled to close; When no mutation point appears in the current torque curve, the rotating part (21) continues to be opened until a mutation point appears or a new indication signal appears.

2. A method for preventing interference of a torque sensor according to claim 1, characterized in that: The method of continuing to maintain the rotation part (21) open when the current torque curve does not have a sudden change point includes: Get the torque sensor life and current torque sensor operation time; Determining the degree of operation based on the current torque sensor operation time and the torque sensor life; Calculate the current opening angle based on the degree of work and the preset full opening angle; The rotating portion (21) is controlled to remain open according to the current opening angle.

3. A method for preventing interference of a torque sensor according to claim 2, characterized in that: Another method for controlling the rotating part (21) to maintain opening after determining the degree of operation is also included, the method comprising: When the working degree is less than the preset damage judgment critical degree, the ambient temperature and the internal temperature are obtained; Calculate the temperature difference based on the internal temperature and the ambient temperature; When the temperature difference is greater than a preset critical value requiring rapid heat dissipation, the rotating part (21) is controlled to open according to a preset maximum heat dissipation angle; When the temperature difference is less than a critical value of the temperature difference requiring rapid heat dissipation, the rotating part (21) is controlled to open according to a preset heat exchange opening angle; When the working degree is greater than the critical degree for damage judgment, the rotating part (21) is controlled to open according to the current opening angle.

4. The method for preventing interference of a torque sensor according to claim 3, characterized in that: The method of controlling the rotating part (21) to open according to the maximum heat dissipation angle comprises: Continue to calculate the temperature difference; When the temperature difference is less than a preset damage critical temperature difference, the rotating part (21) is controlled to open at a maximum heat dissipation angle; When the temperature difference is greater than a critical damage temperature difference, determining a rate of change based on the temperature difference; Calculate the damage temperature difference based on the internal temperature and the damage critical temperature; Calculate the change duration based on the temperature difference, the damage critical temperature difference and the change rate; When the change duration is less than a preset short-time critical duration, the rotating part (21) is controlled to open at a maximum heat dissipation angle; When the changing time length is greater than the short-time critical time length, the rotating part (21) is controlled to open according to the maximum heat dissipation angle and to shake according to a preset heat dissipation shaking amplitude.

5. A method for preventing interference of a torque sensor according to claim 4, characterized in that: Also included is a method for checking the current opening angle, the method comprising: Controlling the rotating part (21) to close and obtaining an actual rotation angle; When the actual rotation angle no longer changes, the actual rotation angle is compared with a preset zero angle; When the actual rotation angle is zero, the current opening angle is output normally; When the actual rotation angle is not zero, the actual rotation angle is corrected based on the zero angle.

6. The method for preventing interference of a torque sensor according to claim 1, characterized in that: Also included is a subsequent method for maintaining the rotating part (21) open when the shielding torque and the opening torque are the same, the method comprising: Get the current vehicle speed; When the current vehicle speed is zero, the rotating part (21) is closed and the current torque curve and the current time are obtained; When the shielding torque corresponding to the current time in the current torque curve is not zero, a preset shielding cover failure signal is output; Determining the torque change rate based on the open torque when the shielding torque corresponding to the current time in the current torque curve is zero; When the torque change speed is zero, the rotating part (21) is kept open; When the torque change speed is not zero, a shield failure signal is output.

7. A torque sensor anti-interference system, characterized in that: include: An acquisition module, used to acquire an indication signal, shielding torque, opening torque, ambient temperature, internal temperature, actual rotation angle, current vehicle speed and current time; A memory for storing a program of a control method for a torque sensor anti-interference method according to any one of claims 1 to 6; The program in the memory can be loaded and executed by the processor to implement a control method for a torque sensor anti-interference method as described in any one of claims 1 to 6.

8. Intelligent terminal, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes a method for preventing interference of a torque sensor as claimed in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that A computer program is stored which can be loaded by a processor and executes a method for preventing interference with a torque sensor as claimed in any one of claims 1 to 6.

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