Detection method and device, electronic equipment and storage medium

Abstract

Embodiments of the present application provide a detection method and device, electronic equipment and storage medium. The method comprises: in the case that the first device controls the to-be-detected gear to rotate, acquiring a first curve corresponding to the to-be-detected gear in a magnetic field generated by the detection system; the first curve represents a relationship between a first position of each tooth and a tooth slot corresponding to each tooth of at least one tooth of the to-be-detected gear and a first voltage generated by the first position in the detection system; the first curve is processed by using a first preset threshold to obtain a second curve corresponding to the first curve; the second curve represents a relationship between the first position and a second voltage converted from the first voltage; determining a first parameter representing a uniformity of the tooth of the to-be-detected gear based on the second curve; and determining a detection result of the to-be-detected gear based on the first parameter.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of locomotive manufacturing, and in particular to a detection method and device, an electronic device and a storage medium. BACKGROUND

[0002] With the rapid development of rail transportation, the number of traction motors also becomes more and more. In order to ensure the safety of the train, various sensors for monitoring the state of the motor are installed on the traction motor, and the speed detection system composed of the speed gear and the speed sensor is one of the important components for monitoring the state of the motor. The uniformity of the gear teeth of the speed gear directly affects the stability of the detected speed signal, and the stability of the speed signal directly affects the traction control of the train, so the uniformity of the speed gear is required to be high in the traction control, and the machining precision is required to be high. However, the speed gear is small in size, large in number of gear teeth, high in required machining precision, and difficult to measure, and the manual measurement has large error and long detection time. At present, there is no effective solution to the problem. SUMMARY

[0003] Therefore, the main purpose of the present application is to provide a detection method, device, electronic device and storage medium.

[0004] To achieve the above purpose, the technical scheme of the present application is as follows:

[0005] The embodiment of the present application provides a detection method applied to a detection system comprising a first device for driving a to-be-detected gear to rotate, and the method comprises the following steps:

[0006] In the case that the first device controls the to-be-detected gear to rotate, a first curve corresponding to the to-be-detected gear in a magnetic field generated by the detection system is obtained; the first curve represents a relationship between a first position of each gear tooth and a corresponding tooth slot in at least one gear tooth of the to-be-detected gear and a first voltage generated by the first position in the detection system;

[0007] The first curve is processed by using a first preset threshold to obtain a second curve corresponding to the first curve; the second curve represents a relationship between the first position and a second voltage obtained by converting the first voltage;

[0008] A first parameter representing the uniformity of the gear tooth of the to-be-detected gear is determined based on the second curve;

[0009] A detection result of the to-be-detected gear is determined based on the first parameter.

[0010] In the scheme, the second voltage includes a first voltage value and a second voltage value; the first voltage value is greater than the second voltage value; the first curve is processed by using a first preset threshold to obtain a second curve corresponding to the first curve, including:

[0011] A first voltage greater than or equal to the first preset threshold is determined in the first curve, and the first voltage greater than or equal to the first preset threshold is converted into the first voltage value;

[0012] A first voltage less than the first preset threshold is determined in the first curve, and the first voltage less than the first preset threshold is converted into the second voltage value;

[0013] The second curve corresponding to the first curve is determined based on the first voltage value and the second voltage value.

[0014] In the scheme, the uniform parameter includes a distance parameter of any tooth and a tooth groove corresponding to the tooth in the to-be-detected gear; the first parameter representing the uniformity of the tooth in the to-be-detected gear is determined based on the second curve, including:

[0015] A first time length corresponding to each adjacent first voltage value and second voltage value in the second curve is obtained;

[0016] The distance parameter of any tooth and a tooth groove corresponding to the tooth in the to-be-detected gear is determined according to the first time length.

[0017] In the scheme, the detection result of the to-be-detected gear is determined based on the first parameter, including:

[0018] Any two distance parameters are compared to obtain a second comparison result;

[0019] In the case where the second comparison result represents that the absolute value of the difference between any two distance parameters is less than a second preset threshold, it is determined that the uniformity of the tooth and the tooth groove corresponding to the tooth in the to-be-detected gear is high.

[0020] In the case where the second comparison result represents that the absolute value of the difference between any two distance parameters is greater than or equal to the second preset threshold, it is determined that the uniformity of the tooth and the tooth groove corresponding to the tooth in the to-be-detected gear is low.

[0021] In the scheme, the uniform parameter includes a first width parameter of any tooth in the to-be-detected gear; the first parameter representing the uniformity of the tooth in the to-be-detected gear is determined based on the second curve, including:

[0022] acquire a second time length corresponding to each first voltage value in the second curve;

[0023] determine a first width parameter of any tooth in the gear to be detected according to the second time length.

[0024] In the above scheme, the determination of the detection result of the gear to be detected based on the first parameter comprises:

[0025] compare any two first width parameters to obtain a third comparison result;

[0026] In the case where the third comparison result represents that the absolute value of the difference between any two first width parameters is less than a third preset threshold, it is determined that the detection result is that the uniformity of the teeth in the gear to be detected is high.

[0027] In the case where the third comparison result represents that the absolute value of the difference between any two first width parameters is greater than or equal to the third preset threshold, it is determined that the detection result is that the uniformity of the teeth in the gear to be detected is low.

[0028] In the above scheme, the uniformity parameter comprises a second width parameter of a tooth groove corresponding to any tooth in the gear to be detected; and the determination of the first parameter representing the uniformity of the teeth in the gear to be detected based on the second curve comprises:

[0029] acquire a third time length corresponding to each second voltage value in the second curve;

[0030] determine a second width parameter of a tooth groove corresponding to any tooth in the gear to be detected according to the third time length.

[0031] In the above scheme, the determination of the detection result of the gear to be detected based on the first parameter comprises:

[0032] compare any two second width parameters to obtain a fourth comparison result;

[0033] In the case where the fourth comparison result represents that the absolute value of the difference between any two second width parameters is less than a fourth preset threshold, it is determined that the detection result is that the uniformity of the tooth groove corresponding to the tooth in the gear to be detected is high.

[0034] In the case where the fourth comparison result represents that the absolute value of the difference between any two second width parameters is greater than or equal to the fourth preset threshold, it is determined that the detection result is that the uniformity of the tooth groove corresponding to the tooth in the gear to be detected is low.

[0035] In the above scheme, the determination of the first parameter representing the uniformity of the teeth in the gear to be detected based on the second curve comprises:

[0036] obtain at least one second curve corresponding to the first position of the gear to be detected;

[0037] determine at least one second voltage corresponding to the first position based on the at least one second curve;

[0038] perform operation processing on the at least one second voltage to obtain an average voltage;

[0039] determine the first parameter based on the average voltage.

[0040] An embodiment of the present application provides a detection device, which is applied to a detection system comprising a first device for driving a gear to be detected to rotate, and comprises:

[0041] a first obtaining module, configured to obtain a first curve corresponding to the gear to be detected in a magnetic field generated by the detection system when the first device controls the gear to be detected to rotate; the first curve represents a relationship between a first position of each tooth and a tooth slot corresponding to each tooth in the gear to be detected and a first voltage generated by the first position in the detection system;

[0042] a conversion module, configured to perform conversion processing on the first curve by using a first preset threshold to obtain a second curve corresponding to the first curve; the second curve represents a relationship between the first position and a second voltage obtained by converting the first voltage;

[0043] a first determining module, configured to determine a first parameter representing a uniformity of the gear to be detected based on the second curve;

[0044] a second determining module, configured to determine a detection result of the gear to be detected based on the first parameter.

[0045] An embodiment of the present application provides a detection device, which comprises a memory and a processor, the memory stores a computer program capable of running on the processor, and the processor implements the method described in any one of the above embodiments when executing the program.

[0046] An embodiment of the present application provides a storage medium, which stores executable instructions, and the executable instructions are executed by a processor to implement the method described in any one of the above embodiments.

[0047] The embodiment of the present application provides a detection method, a device, electronic equipment and a storage medium. The method is applied to a detection system comprising a first device for driving a to-be-detected gear to rotate, and the method comprises the following steps: acquiring a first curve corresponding to the to-be-detected gear in a magnetic field generated by the detection system under the condition that the first device controls the to-be-detected gear to rotate; the first curve represents a relationship between a first position of each tooth in at least one tooth of the to-be-detected gear and a tooth groove corresponding to each tooth and a first voltage generated by the first position in the detection system; performing transformation processing on the first curve by using a first preset threshold to obtain a second curve corresponding to the first curve; the second curve represents a relationship between the first position and a second voltage obtained by transforming the first voltage; determining a first parameter representing a uniformity of the teeth in the to-be-detected gear based on the second curve; and determining a detection result of the to-be-detected gear based on the first parameter. By establishing a mapping relationship between the first position of each tooth in at least one tooth of the to-be-detected gear and the first voltage generated by the first position in the detection system, and then establishing a mapping relationship between the first position and the second voltage obtained by transforming the first voltage, the first parameter representing the uniformity of the teeth in the to-be-detected gear is determined by analyzing and calculating the second voltage, so that the detection result of the to-be-detected gear is obtained, and the problems of high difficulty, large error and long time consumption in manually measuring the first parameter of the gear are solved. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 A flowchart of a detection method of the embodiment of the present application is shown;

[0049] Figure 2 A schematic diagram in which the tooth top and the tooth bottom of the to-be-detected gear of the detection method of the embodiment of the present application pass through a permanent magnetic field in turn is shown;

[0050] Figure 3 A schematic diagram of the to-be-detected gear, the first curve and the second curve in the detection method of the embodiment of the present application is shown;

[0051] Figure 4 A schematic diagram of the composition structure of the first device in the detection method of the embodiment of the present application is shown;

[0052] Figure 5a A schematic diagram of a gear fixing assembly fixing a speed gear in the detection method of the embodiment of the present application is shown;

[0053] Figure 5b A schematic diagram of another gear fixing assembly fixing a speed gear in the detection method of the embodiment of the present application is shown;

[0054] Figure 6 A schematic diagram of a distance parameter in the detection method of the embodiment of the present application is shown;

[0055] Figure 7 This is a schematic diagram of the first width parameter and the second width parameter in the detection method of this embodiment of the invention;

[0056] Figure 8 This is a schematic diagram of the composition and structure of the detection device according to an embodiment of the present invention;

[0057] Figure 9 This is a schematic diagram of the hardware structure of a detection device according to an embodiment of the present invention. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the specific technical solutions of the invention will be further described in detail below with reference to the accompanying drawings of the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0059] This invention provides a detection method. The function of this method can be implemented by a processor in a detection device calling program code. Of course, the program code can be stored in a computer storage medium. It can be seen that the computing device includes at least a processor and a storage medium.

[0060] Figure 1 This is a schematic diagram of the detection method implementation process according to an embodiment of the present invention, such as... Figure 1 As shown, the method is applied to a detection system including a first device for rotating the gear to be detected, and the method includes:

[0061] Step 101: When the first device controls the gear to be tested to rotate, obtain the first curve corresponding to the gear to be tested in the magnetic field generated by the detection system; the first curve characterizes the relationship between the first position of each tooth and the tooth groove corresponding to each tooth in at least one tooth of the gear to be tested and the first voltage generated by the first position in the detection system.

[0062] Step 102: The first curve is transformed using a first preset threshold to obtain a second curve corresponding to the first curve; the second curve represents the relationship between the first position and the second voltage after the first voltage is transformed.

[0063] Step 103: Determine a first parameter characterizing the uniformity of the teeth in the gear to be tested based on the second curve;

[0064] Step 104: Determine the detection result of the gear to be detected based on the first parameter.

[0065] In step 101, the detection method can be determined according to the actual situation and is not limited here. As an example, the detection method can be a detection method for speed gears, used to quickly detect the uniformity of speed gear teeth.

[0066] The first device can be determined according to the actual situation and is not limited here. As an example, the first device can be a speed gear rotating device for connecting the gear to be tested and for driving the gear to be tested to rotate at a preset speed at a uniform speed.

[0067] The magnetic field generated by the detection system can be determined according to the actual situation and is not limited here. As an example, the magnetic field generated by the detection system can be a constant magnetic field. Figure 2 This is a schematic diagram illustrating how the tooth tip and tooth root of the gear to be tested sequentially pass through a constant magnetic field in the detection method of this embodiment of the invention. Figure 2 As shown, the constant magnetic field is generated using a constant voltage power supply and a magnetic field generator 203. The constant voltage power supply can be a voltage generator 204, which is connected to an output lead 202. The magnetic field generator 203 is connected to a power supply lead 201. The voltage generator 204 is loaded onto the magnetic field generator 203 to generate a constant magnetic field. The gear to be tested 205 is positioned below the voltage generator 204.

[0068] in, Figure 2 (a) indicates the case where the gear teeth of the gear under test cut magnetic field lines, that is, the case where the area of ​​magnetic field lines cut by the gear under test in the constant magnetic field is large. Figure 2 (b) indicates the case where the tooth grooves of the gear under test cut magnetic field lines, that is, the case where the area of ​​the magnetic field lines cut by the gear under test in the constant magnetic field is small.

[0069] The first curve can be determined according to the actual situation, and is not limited here. As an example, the first curve can be a voltage curve that is similar to a sine wave.

[0070] The first position can be determined according to the actual situation and is not limited here. As an example, the first position can be any position between the gear position corresponding to each of the gear teeth and the tooth root position corresponding to each of the tooth grooves.

[0071] The first curve corresponding to the gear under test in the magnetic field generated by the detection system can be obtained by having the tooth tip and tooth groove of the gear under test cut the magnetic field lines of the constant magnetic field to obtain a voltage curve similar to a sine wave.

[0072] Specifically, the gear under test generates a larger first voltage when the area of ​​the magnetic field lines it cuts within the constant magnetic field is large, and a smaller first voltage when the area of ​​the magnetic field lines it cuts within the constant magnetic field is small. As the tooth tips and tooth root spaces of the gear under test pass sequentially through the constant magnetic field, a periodic, sinusoidal voltage curve can be obtained. Figure 3 This is a schematic diagram of the gear to be detected, the first curve, and the second curve in the detection method of this embodiment of the invention, as shown below. Figure 3 As shown, on the periodic sinusoidal voltage curve, the same first position of different periods represents the same first position of different teeth and tooth grooves on the gear to be tested. A first mapping relationship between each first voltage and the first position of the gear to be tested is established to obtain the first curve.

[0073] In step 102, the first preset threshold can be determined according to the actual situation, and is not limited here. As an example, the first preset threshold can be the value corresponding to 0.5 times the maximum value of the first voltage.

[0074] The second curve can be determined according to the actual situation, and is not limited here. As an example, the second curve can be a rectangular high-low voltage curve.

[0075] The transformation of the first curve using a first preset threshold can be determined based on actual circumstances and is not limited here. As an example, a voltage shaping circuit with threshold judgment can be used to transform the sinusoidal voltage curve into a rectangular high-low voltage curve.

[0076] The voltage shaping circuit can be determined according to actual conditions and is not limited here. As an example, the voltage shaping circuit converts voltages above a threshold into high voltages and voltages below a threshold into low voltages. Based on the high voltage and the low voltage, a second voltage is formed, thereby realizing the transformation processing of the first curve using a first preset threshold to obtain the second curve corresponding to the first curve. That is, the voltage curve with a continuous voltage-like sine wave is transformed into a rectangular high-low voltage curve with rapidly changing high and low voltages.

[0077] In step 103, determining the first parameter characterizing the uniformity of the teeth in the gear under test based on the second curve can be achieved by obtaining the time length corresponding to the voltage value of the second curve and determining the first parameter based on the time length.

[0078] Specifically, the voltage value corresponds to the first position in the second curve; the time length characterizes the duration of the voltage value, that is, the duration of the first position cutting magnetic field lines in the magnetic field; the first parameter characterizes the size parameter of the first position, that is, the size parameter of the first position is determined according to the duration of the first position cutting magnetic field lines in the magnetic field.

[0079] In step 104, determining the detection result of the gear to be tested based on the first parameter can be achieved by comparing any two of the at least one first parameter to obtain a comparison result; if the comparison result indicates that the absolute value of the difference between any two first parameters is less than a preset threshold, the detection result is determined to be that the uniformity of the teeth in the gear to be tested is high; if the comparison result indicates that the absolute value of the difference between any two first parameters is greater than or equal to the preset threshold, the detection result is determined to be that the uniformity of the teeth in the gear to be tested is low.

[0080] The preset threshold can be determined based on actual conditions and is not limited here. As an example, the preset threshold can be the allowable error value of the first parameter.

[0081] In some embodiments, Figure 4 This is a schematic diagram of the composition of the first device in the detection method of this invention, as shown in the embodiment. Figure 4 As shown, the first device 400 includes a fixing component 402 and a power component 401 for fixing the gear 403 to be tested; the fixing component 402 is connected to the power component 401; the power component 401 is used to control the rotation of the fixing component 402. The fixing component 402 is a gear fixing component that can detachably fix the gear 403 to be tested. The power component 401 can be an electric motor capable of providing a uniform rotational speed to the fixing component 402.

[0082] In some embodiments, FIG5(a) is a schematic diagram of a gear fixing assembly fixing a speed gear in the detection method of the present invention. As shown in FIG5(a), the fixing assembly includes a first connector 501 and a fastener 502; the first connector 501 is provided with a through hole, and the fastener 502 passing through the through hole fixes the gear 505 to be tested. The first connector 501 may be a connector that is detachably or non-detachably connected to the power assembly. The fastener 502 may include a head and a screw with external threads. The through hole provided on the first connector 501 may be a hole with internal threads. The fastener 502 passing through the through hole fixes the gear 505 to be tested by aligning the through hole of the gear 505 to be tested with the through hole of the first connector 501; the fastener 502 passes through the through hole and the through hole.

[0083] In some embodiments, the first connector 501 is provided with a blind hole, and a fastener inserted into the blind hole fixes the gear 505 to be tested. Fixing the gear 505 to be tested by inserting the fastener 502 into the blind hole can be achieved by aligning the through hole of the gear 505 to the blind hole of the first connector 501; the fastener 502 is inserted into both the through hole and the blind hole.

[0084] In some embodiments, FIG5(b) is a schematic diagram of a gear fixing assembly fixing a speed gear in the detection method of the present invention. As shown in FIG5(b), the fixing assembly includes a second connector 503; at least one clamping portion 504 is provided on the second connector 503 in a circumferentially distributed manner; the at least one clamping portion 504, which tightens towards the center of the second connector 503, fixes the gear 505 to be tested. The second connector 503 may be a connector that is detachably or non-detachably connected to the power assembly. The clamping portion 504 may be a pawl provided on the second connector 503.

[0085] In some embodiments, the number of clamping portions 504 may be two, and the two clamping portions 504 are centrally symmetrically distributed on the second connector 503. The number of clamping portions 504 may also be three, and the three clamping portions 504 are evenly distributed at 360 degrees on the second connector 503. In some embodiments, the gear to be detected 505 is released by at least one clamping portion 504 that retracts in the circumferential direction of the second connector 503.

[0086] This invention provides a detection method that establishes a mapping relationship between the first position of each tooth in at least one tooth of the gear to be tested and the first voltage generated at the first position in the detection system; then establishes a mapping relationship between the first position and the second voltage converted from the first voltage; analyzes and calculates the second voltage to determine a first parameter characterizing the uniformity of the teeth in the gear to be tested, thereby obtaining the detection result of the gear to be tested. This method solves the problems of high difficulty, large error, and long time consumption in directly measuring the first parameter of the gear manually.

[0087] In an optional embodiment of the present invention, the second voltage includes a first voltage value and a second voltage value; the first voltage value is greater than the second voltage value; the step of converting the first curve using a first preset threshold to obtain the second curve corresponding to the first curve includes:

[0088] In the first curve, a first voltage greater than or equal to the first preset threshold is determined, and the first voltage greater than or equal to the first preset threshold is converted into the first voltage value.

[0089] In the first curve, a first voltage that is less than the first preset threshold is determined, and the first voltage that is less than the first preset threshold is converted into the second voltage value;

[0090] The second curve corresponding to the first curve is determined based on the first voltage value and the second voltage value.

[0091] In this embodiment, the first voltage value and the second voltage value can be determined according to actual conditions, and are not limited here. As an example, the first voltage value can be a high voltage, and the second voltage value can be a low voltage.

[0092] The determination of the second curve corresponding to the first curve based on the first voltage value and the second voltage value can be achieved by arranging the high voltage and the low voltage sequentially according to a periodicity. The position where the same low voltage rises to high voltage on different periods of the periodic rectangular high-low voltage curve represents the same second position of different teeth of the gear under test; the position where the same high voltage falls to low voltage on different periods of the periodic rectangular high-low voltage curve represents the same third position of different teeth of the gear under test.

[0093] like Figure 3As shown, in the first cycle, the first position between the second position and the third position corresponds to the high voltage in the second voltage; in the first and second cycles, the first position between the third position and the second position corresponds to the low voltage in the second voltage. A second mapping relationship is established between each high and low voltage in the second voltage and the first position of the gear to be detected, resulting in a second curve corresponding to the first curve.

[0094] In an optional embodiment of the present invention, the uniformity parameter includes the distance parameter between any tooth in the gear to be tested and the corresponding tooth groove of any tooth; the step of determining the first parameter characterizing the uniformity of the teeth in the gear to be tested based on the second curve includes:

[0095] Obtain the first time length corresponding to each adjacent first voltage value and second voltage value in the second curve;

[0096] The distance parameters of any tooth and its corresponding groove in the gear to be tested are determined based on the first time length.

[0097] In this embodiment, the adjacent first voltage value and second voltage value correspond to the positions of the teeth and tooth grooves adjacent to the gear to be detected in the second curve.

[0098] The first time length characterizes the duration of adjacent first voltage values ​​and second voltage values, that is, the duration of adjacent teeth and tooth grooves of the gear under test cutting magnetic field lines in the magnetic field.

[0099] Figure 6 This is a schematic diagram of the distance parameters in the detection method of this embodiment of the invention, as shown below. Figure 6 As shown, the distance parameters A1, A2... represent the distance between the same position of adjacent teeth and teeth in the tooth groove in different periods. That is, the distance between the same position of adjacent teeth and teeth in the tooth groove is determined according to the duration of the adjacent teeth and teeth groove of the gear under test cutting the magnetic field lines in the magnetic field.

[0100] The second rising position in the periodic rectangular high and low voltage curve is the same position of different gear teeth. That is, according to the second mapping relationship, the duration of adjacent high and low voltages in one cycle is recorded. Comparing the duration of different adjacent high and low voltages is to compare the distance between different adjacent gear teeth and the same position of the gear teeth in the tooth groove. Thus, the tooth pitch corresponding to the sum of different gear teeth and tooth grooves can be compared, so as to achieve the purpose of detecting the uniformity of gear teeth.

[0101] In an optional embodiment of the present invention, determining the detection result of the gear to be detected based on the first parameter includes:

[0102] Compare any two of the distance parameters to obtain a second comparison result;

[0103] If the absolute value of the difference between any two distance parameters is less than a second preset threshold as indicated by the second comparison result, the detection result is determined to be that the uniformity of the teeth and the corresponding tooth grooves in the gear to be detected is high.

[0104] If the absolute value of the difference between any two distance parameters is greater than or equal to the second preset threshold, the detection result is determined to be that the uniformity of the teeth and the corresponding tooth grooves in the gear to be detected is low.

[0105] In this embodiment, the step of comparing any two distance parameters to obtain a second comparison result can be achieved by subtracting any two distance parameters to obtain the absolute value of the difference between the two distance parameters; and then comparing the absolute value of the difference between the two distance parameters with a second preset threshold to obtain a second comparison result.

[0106] The second preset threshold can be determined according to the actual situation, and is not limited here. As an example, the second preset threshold can be the allowable error value of the gear teeth and the corresponding tooth groove distance parameters in the gear to be detected.

[0107] In an optional embodiment of the present invention, the uniformity parameter includes a first width parameter of any tooth in the gear to be tested; determining the first parameter characterizing the uniformity of the teeth in the gear to be tested based on the second curve includes:

[0108] Obtain the second time length corresponding to each first voltage value in the second curve;

[0109] The first width parameter of any tooth in the gear to be tested is determined based on the second time length.

[0110] In this embodiment, the first voltage value corresponds to the tooth position of the gear to be detected in the second curve.

[0111] The second time length characterizes the duration of the first voltage value, that is, the duration for which the teeth of the gear to be tested cut magnetic field lines in the magnetic field.

[0112] Figure 7 This is a schematic diagram of the first width parameter and the second width parameter in the detection method of this embodiment of the invention, as shown below. Figure 7 As shown, the first width parameters B1, B2... represent the distance between the same position of the gear teeth in different periods, that is, the distance between the same position of the gear teeth is determined according to the duration of the gear teeth cutting magnetic field lines in the magnetic field.

[0113] The second rising position in the periodic rectangular high and low voltage curve is the same position of different gear teeth. That is, according to the second mapping relationship, the duration of high voltage in one cycle is recorded. Comparing the duration of different high voltages is to compare the distance of the same position of different gear teeth, so that the width of different gear teeth can be compared, thus achieving the purpose of detecting the uniformity of gear teeth.

[0114] In an optional embodiment of the present invention, determining the detection result of the gear to be detected based on the first parameter includes:

[0115] Compare any two of the first width parameters to obtain a third comparison result;

[0116] If the third comparison result indicates that the absolute value of the difference between any two of the first width parameters is less than a third preset threshold, the detection result is determined to be that the uniformity of the teeth in the gear to be detected is high.

[0117] If the third comparison result indicates that the absolute value of the difference between any two of the first width parameters is greater than or equal to the third preset threshold, the detection result is determined to be that the uniformity of the teeth in the gear to be detected is low.

[0118] In this embodiment, the comparison of any two first width parameters to obtain a third comparison result can be achieved by subtracting any two first width parameters to obtain the absolute value of the difference between the two first width parameters; and comparing the absolute value of the difference between the two first width parameters with the third preset threshold to obtain a third comparison result.

[0119] The third preset threshold can be determined based on actual conditions and is not limited here. As an example, the third preset threshold can be the allowable error value of the first width parameter of the teeth in the gear to be detected.

[0120] In an optional embodiment of the present invention, the uniformity parameter includes a second width parameter of the tooth groove corresponding to any tooth in the gear to be tested; the step of determining a first parameter characterizing the uniformity of the teeth in the gear to be tested based on the second curve includes:

[0121] Obtain the third time length corresponding to each second voltage value in the second curve;

[0122] The second width parameter of the tooth groove corresponding to any tooth in the gear to be tested is determined based on the third time length.

[0123] In this embodiment, the second voltage value corresponds to the tooth groove position of the gear to be detected in the second curve.

[0124] The third time length characterizes the duration of the second voltage value, that is, the duration for which the tooth groove of the gear to be tested cuts the magnetic field lines in the magnetic field.

[0125] like Figure 7 As shown, the second width parameters C1, C2... represent the distance between the same position of the tooth groove in different periods, that is, the distance between the same position of the tooth groove is determined according to the duration of the tooth groove of the gear under test cutting the magnetic field lines in the magnetic field.

[0126] The third position of the periodic rectangular high and low voltage curve is the same position of different tooth grooves. That is, according to the second mapping relationship, the duration of low voltage in one cycle is recorded. Comparing the duration of different low voltages is to compare the distance of the same position of different tooth grooves. Thus, the width of different tooth grooves can be compared, so as to achieve the purpose of detecting the uniformity of tooth grooves in gears.

[0127] In an optional embodiment of the present invention, determining the detection result of the gear to be detected based on the first parameter includes:

[0128] Compare any two of the second width parameters to obtain a fourth comparison result;

[0129] If the absolute value of the difference between any two of the second width parameters is less than a fourth preset threshold, the detection result is determined to be that the uniformity of the tooth grooves corresponding to the teeth in the gear to be detected is high.

[0130] If the absolute value of the difference between any two of the second width parameters is greater than or equal to the fourth preset threshold, the detection result is determined to be that the uniformity of the tooth grooves corresponding to the teeth in the gear to be detected is low.

[0131] In this embodiment, the step of comparing any two second width parameters to obtain a fourth comparison result can be achieved by subtracting any two second width parameters to obtain the absolute value of the difference between the two second width parameters; and comparing the absolute value of the difference between the two second width parameters with the fourth preset threshold to obtain a fourth comparison result.

[0132] The fourth preset threshold can be determined based on actual conditions and is not limited here. As an example, the fourth preset threshold can be the allowable error value of the second width parameter of the tooth groove in the gear to be detected.

[0133] In an optional embodiment of the present invention, determining the first parameter characterizing the uniformity of the teeth in the gear to be tested based on the second curve includes:

[0134] Obtain at least one second curve corresponding to the gear to be detected;

[0135] Based on the at least one second curve, determine at least one second voltage corresponding to the first position;

[0136] The at least one second voltage is processed to obtain an average voltage;

[0137] The first parameter is determined based on the average voltage.

[0138] In this embodiment, obtaining at least one second curve corresponding to the gear under test can be achieved by controlling the gear under test to rotate at least one revolution in the constant magnetic field; wherein, a second curve is generated for each revolution of the gear under test; at least one second curve is obtained based on the gear under test that has rotated at least one revolution.

[0139] The determination of at least one second voltage corresponding to the first position based on the at least one second curve can be achieved by determining at least one second voltage corresponding to the first position in the at least one second curve based on the number of teeth of the gear to be detected.

[0140] The step of performing calculations on the at least one second voltage to obtain an average voltage can be achieved by averaging the at least one second voltage to obtain the average voltage corresponding to the first position.

[0141] Determining the first parameter based on the average voltage can be achieved by performing calculations on the time length corresponding to the at least one second voltage value to obtain an average time length; and then determining the first parameter based on the average time length.

[0142] like Figure 6 and Figure 7 As shown, the number of teeth Z of the gear to be tested is known, and the at least one second curve is also a periodic rectangular high and low voltage curve. The first (e.g., A1, B1, C1) and the (Z+1)th (e.g., A) data points detected in the at least one second curve are... Z+1 B Z+1 C Z+1 The 2Z+1th, ..., are all detection data from the same first position in the gear to be tested. By averaging the data from at least one second voltage detection, the influence of systematic errors on the detection results can be eliminated, thus obtaining an accurate detection result. The systematic errors include measurement errors caused by magnetic field variations due to voltage fluctuations of the constant voltage source, as well as response errors of some electrical components.

[0143] This invention provides a detection device applied to a detection system including a first device for driving the gear to be detected to rotate. Figure 8This is a schematic diagram of the composition and structure of the detection device according to an embodiment of the present invention, as shown below. Figure 8 As shown, the device 800 includes:

[0144] The first acquisition module 801 is used to acquire a first curve corresponding to the gear under test in the magnetic field generated by the detection system when the first device controls the gear under test to rotate; the first curve represents the relationship between the first position of each tooth and the tooth groove corresponding to each tooth in at least one tooth of the gear under test and the first voltage generated in the detection system at the first position.

[0145] The conversion module 802 is used to convert the first curve using a first preset threshold to obtain a second curve corresponding to the first curve; the second curve represents the relationship between the first position and the second voltage after the first voltage is converted.

[0146] The first determining module 803 is used to determine a first parameter characterizing the uniformity of the teeth in the gear to be detected based on the second curve;

[0147] The second determining module 804 is used to determine the detection result of the gear to be detected based on the first parameter.

[0148] In other embodiments, the second voltage includes a first voltage value and a second voltage value; the first voltage value is greater than the second voltage value; the conversion module 802 is further configured to: determine a first voltage greater than or equal to a first preset threshold in the first curve; convert the first voltage greater than or equal to the first preset threshold into the first voltage value; determine a first voltage less than the first preset threshold in the first curve; convert the first voltage less than the first preset threshold into the second voltage value; and determine a second curve corresponding to the first curve based on the first voltage value and the second voltage value.

[0149] In other embodiments, the uniformity parameter includes the distance parameter between any tooth in the gear to be tested and the corresponding tooth groove of any tooth; the first determining module 803 is further configured to obtain the first time length corresponding to each adjacent first voltage value and second voltage value in the second curve; and determine the distance parameter between any tooth in the gear to be tested and the corresponding tooth groove of any tooth based on the first time length.

[0150] In other embodiments, the second determining module 804 is further configured to compare any two of the distance parameters to obtain a second comparison result; if the second comparison result indicates that the absolute value of the difference between any two of the distance parameters is less than a second preset threshold, the detection result is determined to be that the uniformity of the teeth and corresponding tooth grooves in the gear to be detected is high; if the second comparison result indicates that the absolute value of the difference between any two of the distance parameters is greater than or equal to the second preset threshold, the detection result is determined to be that the uniformity of the teeth and corresponding tooth grooves in the gear to be detected is low.

[0151] In other embodiments, the uniformity parameter includes a first width parameter of any tooth in the gear to be tested; the first determining module 803 is further configured to obtain a second time length corresponding to each first voltage value in the second curve; and determine the first width parameter of any tooth in the gear to be tested based on the second time length.

[0152] In other embodiments, the second determining module 804 is further configured to compare any two of the first width parameters to obtain a third comparison result; if the third comparison result indicates that the absolute value of the difference between any two of the first width parameters is less than a third preset threshold, the detection result is determined to be that the uniformity of the teeth in the gear to be detected is high; if the third comparison result indicates that the absolute value of the difference between any two of the first width parameters is greater than or equal to the third preset threshold, the detection result is determined to be that the uniformity of the teeth in the gear to be detected is low.

[0153] In other embodiments, the uniformity parameter includes a second width parameter of the tooth groove corresponding to any tooth in the gear to be tested; the first determining module 803 is further configured to obtain a third time length corresponding to each second voltage value in the second curve; and determine the second width parameter of the tooth groove corresponding to any tooth in the gear to be tested based on the third time length.

[0154] In other embodiments, the second determining module 804 is further configured to compare any two of the second width parameters to obtain a fourth comparison result; if the fourth comparison result indicates that the absolute value of the difference between any two of the second width parameters is less than a fourth preset threshold, the detection result is determined to be that the uniformity of the tooth groove corresponding to the tooth in the gear to be detected is high; if the fourth comparison result indicates that the absolute value of the difference between any two of the second width parameters is greater than or equal to the fourth preset threshold, the detection result is determined to be that the uniformity of the tooth groove corresponding to the tooth in the gear to be detected is low.

[0155] In other embodiments, the first determining module 803 is further configured to acquire at least one second curve corresponding to the gear to be detected; determine at least one second voltage corresponding to the first position based on the at least one second curve; perform calculation processing on the at least one second voltage to obtain an average voltage; and determine the first parameter based on the average voltage.

[0156] The description of the above device embodiments is similar to that of the above method embodiments, and has similar beneficial effects. For technical details not disclosed in the device embodiments of the present invention, please refer to the description of the method embodiments of the present invention for understanding.

[0157] It should be noted that, in the embodiments of the present invention, if the above-described detection method is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical embodiments of the present invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a detection device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of the present invention are not limited to any specific hardware and software combination.

[0158] Correspondingly, embodiments of the present invention provide a detection device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the program, it implements the method described in any of the above-mentioned embodiments.

[0159] Correspondingly, embodiments of the present invention provide a storage medium storing executable instructions, which, when executed by a processor, implement the method described in any of the above-mentioned embodiments.

[0160] It should be noted that the descriptions of the storage medium and device embodiments above are similar to those of the method embodiments above, and have similar beneficial effects. For technical details not disclosed in the storage medium and device embodiments of the present invention, please refer to the descriptions of the method embodiments of the present invention for understanding.

[0161] It should be noted that, Figure 9 This is a schematic diagram of a hardware entity structure of the detection device according to an embodiment of the present invention, such as... Figure 9As shown, the hardware entity of the detection device 900 includes a processor 901 and a memory 903. Optionally, the detection device 900 may also include a communication interface 902.

[0162] It is understood that memory 903 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memory 903 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0163] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 901. Processor 901 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 901 or by instructions in software form. The processor 901 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 901 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present invention can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in memory 903. Processor 901 reads the information in memory 903 and combines its hardware to complete the steps of the aforementioned method.

[0164] In an exemplary embodiment, the detection device may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0165] In the several embodiments provided by this invention, it should be understood that the disclosed methods and apparatus can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components may be combined, or integrated into another observation, or some features may be ignored or not executed. In addition, the communication connections between the various components shown or discussed may be through some interfaces, indirect coupling or communication connections between devices or units, and may be electrical, mechanical, or other forms.

[0166] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0167] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0168] Alternatively, if the integrated units described above in the embodiments of the present invention are implemented as software functional units and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical embodiments of the present invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a testing device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0169] The detection methods, apparatus, and computer storage media described in this invention are only examples of the embodiments of this invention, but are not limited thereto. Any detection methods, apparatus, and computer storage media involved are within the protection scope of this invention.

[0170] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of the invention, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the invention. The sequence numbers of the above-described embodiments of the invention are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0171] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0172] The above description is merely an embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method of detection, characterized in that, The method is applied to a detection system comprising a first device for driving a gear to be detected to rotate, and the method comprises the following steps: In the case that the first device controls the gear to be detected to rotate, a first curve corresponding to the gear to be detected in a magnetic field generated by the detection system is obtained; the first curve represents a relationship between a first position of each tooth and a corresponding tooth gap in the gear to be detected and a first voltage generated by the first position in the detection system; A first preset threshold is used to transform the first curve to obtain a second curve corresponding to the first curve; the second curve represents a relationship between the first position and a second voltage obtained by transforming the first voltage; A first parameter representing a uniformity of the gear to be detected is determined based on the second curve; A detection result of the gear to be detected is determined based on the first parameter; The second voltage comprises a first voltage value and a second voltage value; the first voltage value is greater than the second voltage value; the first curve is transformed by using the first preset threshold to obtain the second curve corresponding to the first curve, which comprises: A first voltage greater than or equal to the first preset threshold is determined in the first curve, and the first voltage greater than or equal to the first preset threshold is transformed into the first voltage value; A first voltage less than the first preset threshold is determined in the first curve, and the first voltage less than the first preset threshold is transformed into the second voltage value; The second curve corresponding to the first curve is determined based on the first voltage value and the second voltage value; The first parameter representing the uniformity of the gear to be detected is determined based on the second curve, which comprises: A time length corresponding to a voltage value of the second curve is obtained; the voltage value of the second curve corresponds to a first position in the second curve; the time length represents a duration of the first position cutting a magnetic induction line in the magnetic field; The first parameter is determined based on the time length; the first parameter represents a uniformity parameter of the first position.

2. The method of claim 1, wherein, The uniformity parameter comprises a distance parameter between any tooth and a corresponding tooth gap of the gear to be detected; the first parameter representing the uniformity of the gear to be detected is determined based on the second curve, which comprises: A first time length corresponding to each adjacent first voltage value and second voltage value in the second curve is obtained; The distance parameter between any tooth and a corresponding tooth gap of the gear to be detected is determined according to the first time length.

3. The method of claim 2, wherein, The detection result of the gear to be detected is determined based on the first parameter, which comprises: Any two distance parameters are compared to obtain a second comparison result; In the case that the second comparison result represents that an absolute value of a difference between any two distance parameters is less than a second preset threshold, it is determined that the uniformity of the gear to be detected is high. In a case where the second comparison result represents that an absolute value of a difference between any two distance parameters is greater than or equal to the second preset threshold, it is determined that the detection result is that uniformity of the gear teeth and the gear tooth grooves in the to-be-detected gear is low.

4. The method of claim 1, wherein, The uniformity parameter comprises a first width parameter of any gear tooth in the to-be-detected gear; the first parameter representing uniformity of the gear teeth in the to-be-detected gear is determined based on the second curve, comprising: A second time length corresponding to each first voltage value in the second curve is obtained; A first width parameter of any gear tooth in the to-be-detected gear is determined according to the second time length.

5. The method of claim 4, wherein, The detection result of the to-be-detected gear is determined based on the first parameter, comprising: Any two first width parameters are compared to obtain a third comparison result; In a case where the third comparison result represents that an absolute value of a difference between any two first width parameters is less than a third preset threshold, it is determined that the detection result is that uniformity of the gear teeth in the to-be-detected gear is high; In a case where the third comparison result represents that an absolute value of a difference between any two first width parameters is greater than or equal to the third preset threshold, it is determined that the detection result is that uniformity of the gear teeth in the to-be-detected gear is low.

6. The method of claim 1, wherein, The uniformity parameter comprises a second width parameter of a gear tooth groove corresponding to any gear tooth in the to-be-detected gear; the first parameter representing uniformity of the gear teeth in the to-be-detected gear is determined based on the second curve, comprising: A third time length corresponding to each second voltage value in the second curve is obtained; A second width parameter of a gear tooth groove corresponding to any gear tooth in the to-be-detected gear is determined according to the third time length.

7. The method of claim 6, wherein, The detection result of the to-be-detected gear is determined based on the first parameter, comprising: Any two second width parameters are compared to obtain a fourth comparison result; In a case where the fourth comparison result represents that an absolute value of a difference between any two second width parameters is less than a fourth preset threshold, it is determined that the detection result is that uniformity of the gear tooth grooves corresponding to the gear teeth in the to-be-detected gear is high; In a case where the fourth comparison result represents that an absolute value of a difference between any two second width parameters is greater than or equal to the fourth preset threshold, it is determined that the detection result is that uniformity of the gear tooth grooves corresponding to the gear teeth in the to-be-detected gear is low.

8. The method of claim 1, wherein, The first parameter representing uniformity of the gear teeth in the to-be-detected gear is determined based on the second curve, comprising: At least one second curve corresponding to the to-be-detected gear is obtained; At least one second voltage corresponding to the first position is determined based on the at least one second curve; The at least one second voltage is processed to obtain an average voltage; The first parameter is determined based on the average voltage.

9. A detection device, characterized in that The detection system comprises a first device for driving the to-be-detected gear to rotate. The first acquisition module is configured to acquire a first curve corresponding to the gear to be detected in a magnetic field generated by the detection system when the first device controls the gear to be detected to rotate, the first curve representing a relationship between a first position of each tooth and a corresponding tooth slot in the gear to be detected and a first voltage generated by the first position in the detection system; The conversion module is configured to perform conversion processing on the first curve by using a first preset threshold to obtain a second curve corresponding to the first curve, the second curve representing a relationship between the first position and a second voltage converted from the first voltage; The first determination module is configured to determine a first parameter representing a uniformity of the gear to be detected based on the second curve; The second determination module is configured to determine a detection result of the gear to be detected based on the first parameter; The second voltage includes a first voltage value and a second voltage value, the first voltage value being greater than the second voltage value, the conversion module being further configured to determine a first voltage greater than or equal to the first preset threshold in the first curve, convert the first voltage greater than or equal to the first preset threshold into the first voltage value, determine a first voltage less than the first preset threshold in the first curve, and convert the first voltage less than the first preset threshold into the second voltage value; determine a second curve corresponding to the first curve based on the first voltage value and the second voltage value; The first determination module is further configured to acquire a time length corresponding to a voltage value of the second curve, the voltage value of the second curve corresponding to a first position in the second curve, the time length representing a duration of the first position cutting a magnetic induction line in the magnetic field; determine the first parameter based on the time length, the first parameter representing a uniformity parameter of the first position. The processor executes the program to implement the method in any one of claims 1 to 8.

10. A detection device comprising a memory and a processor, the memory storing a computer program capable of running on the processor, characterized in that, The storage medium stores executable instructions, and when the executable instructions are executed by the processor, the method in any one of claims 1 to 8 is implemented.

11. A storage medium, characterized by ​

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