A perturbation-increasing rotational speed sensor automatic calibration system

Abstract

The application discloses a kind of increasing disturbance's rotational speed sensor automatic calibration system, including measured gear, gear disc, driving motor, rotating shaft, rotational speed sensor, tachometer, data collector, main control unit and disturbance exerting mechanism, disturbance exerting mechanism includes synchronous ring body, thermal bimetal, simulation tooth, connecting rod, electrically controlled trolley, locking mechanism, heating sheet, first electric push rod and first abutment plate, mobile trolley can bring heating sheet to the inside of different storage slot, heating sheet generates heat and makes thermal bimetal in storage slot deform, drive simulation tooth to be collected into storage slot, simulate tooth defect state, when main control unit sends control instruction to driving motor, driving motor can rotate by rotating shaft and drive synchronous ring body and measured gear, since synchronous ring body is tooth defect state, it can exert vibration disturbance, the rotational speed of measured gear that rotational speed sensor collects can be sent to main control unit and compared and calibrated, and the accuracy of calibration can be improved by exerting different disturbance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of instrument calibration, in particular to a rotational speed sensor automatic calibration system with increased disturbance. BACKGROUND

[0002] With the continuous improvement of industrial automation and intelligence, rotational speed sensors are widely used in mechanical equipment operation monitoring, automotive electronics, aerospace and other fields, and their measurement accuracy directly affects the system control performance and operation safety. Existing rotational speed sensor calibration usually adopts static calibration or calibration under fixed rotational speed. However, in actual working conditions, rotational speed sensors often face complex disturbance factors. For example, when a gear appears missing teeth, periodic vibration impact will be caused. This vibration disturbance not only changes the output signal of the rotational speed sensor, but also affects its measurement accuracy. However, the traditional calibration method is difficult to simulate the complex disturbance environment under real working conditions caused by missing teeth of the gear, resulting in deviation between the calibration result and the actual running state, and unable to effectively guarantee the measurement accuracy. In addition, the existing calibration system relies on manual operation, and the calibration efficiency is low and the consistency is difficult to guarantee, which is difficult to meet the batch production and rapid detection demand. Although some automatic calibration systems have certain automation functions, they have obvious deficiencies in introducing key disturbance factors such as missing teeth vibration and simulating real complex working conditions, and cannot fully cover various interference situations that rotational speed sensors may face in actual application. SUMMARY

[0003] In view of this, the present application provides a rotational speed sensor automatic calibration system with increased disturbance, which can introduce vibration disturbance caused by missing teeth, close to real faults, and improve the accuracy of rotational speed sensor calibration results.

[0004] The technical scheme of the present application is as follows:

[0005] The application discloses a kind of increased disturbance rotational speed sensor automatic calibration system, including measured gear, gear disc, drive motor, rotating shaft, rotational speed sensor, tachometer, data collector, main control unit and disturbance exerting mechanism, the measured gear is arranged on gear disc, the drive motor output shaft is connected with one end of rotating shaft, the other end of rotating shaft is connected with measured gear, rotational speed sensor is arranged on the side of measured gear, data collector is respectively connected with tachometer, rotational speed sensor and main control unit data, main control unit is connected with drive motor data;The disturbance exerting mechanism includes synchronous ring body, thermal bimetal, simulation tooth, connecting rod, electric control trolley, locking mechanism, heating sheet, first electric push rod and first abutment plate, the synchronous ring body is sleeved on rotating shaft, and the outer circumferential surface thereof is provided with a plurality of receiving grooves at intervals, the thermal bimetal is connected with the inner wall of receiving groove on both sides, one end of the simulation tooth is inserted into receiving groove, the connecting rod is connected with thermal bimetal and simulation tooth end, the thermal bimetal is bent to the center of synchronous ring body when heated, the inner circumferential surface of synchronous ring body is provided with annular track, the electric control trolley moves in annular track, and is locked by locking mechanism, the heating sheet is arranged on the side wall of electric control trolley away from the center of synchronous ring body, the receiving groove is located outside the movement path of heating sheet, the first electric push rod is embedded in the inner circumferential surface of synchronous ring body, and the output shaft thereof is connected with one side of first abutment plate, the rotating shaft passes between first abutment plate, and main control unit is respectively connected with electric control trolley, locking mechanism, heating sheet and first electric push rod data.

[0006] Preferably, the thermal bimetal includes a driving layer and a passive layer arranged in layers, both sides of the driving layer and the passive layer are connected with the inner wall of the receiving groove, the passive layer is arranged on the side of the driving layer facing the center of the synchronous ring body, the connecting rod is connected with the side of the driving layer away from the passive layer and the simulation tooth, and the thermal bimetal is bent to the passive layer when heated.

[0007] Preferably, limit grooves are arranged on both sides of the annular track, the electric control trolley includes a moving body, a double-shaft motor and a driving wheel, the moving body is located in the annular track, the double-shaft motor is arranged in the moving body, the output shaft thereof extends out of the moving body and is connected with the driving wheel, the driving wheel is located in the limit groove, the main control unit is connected with the moving body data, and the heating sheet is arranged on the side wall of the moving body away from the center of the synchronous ring body.

[0008] Preferably, the electric control trolley further includes an auxiliary wheel, the auxiliary wheel is arranged on the side wall of the moving body and is in contact with the inner side wall of the annular track.

[0009] Preferably, the locking mechanism includes a second electric push rod and a second abutment plate, the second electric push rod is symmetrically arranged on the top surface of the moving body, the output shaft thereof extends out of the moving body and is connected with the side wall of the second abutment plate, and the main control unit is connected with the second electric push rod data.

[0010] Preferably, a gasket is further included, which is arranged on the outer wall of the first abutting plate and the second abutting plate away from the first electric push rod and the second electric push rod.

[0011] Preferably, the disturbance applying mechanism further comprises an electric slide, a third electric push rod and a pushing plate, the electric slide is arranged on the gear disc, the third electric push rod is arranged on the top surface of the mover of the electric slide, the output shaft of the third electric push rod is connected with the bottom surface of the pushing plate, the synchronous ring body is located on the moving path of the pushing plate, and the master control unit is in data connection with the electric slide and the third electric push rod.

[0012] Preferably, the simulation tooth comprises a metal main body and a magnetic detachable strip, one end of the metal main body extends into the receiving groove and is connected with the connecting rod, and the magnetic detachable strip is detachably connected with the end of the metal main body away from the thermal bimetallic strip.

[0013] Preferably, the disturbance applying mechanism further comprises an electromagnet, the electromagnet is embedded in the top surface of the pushing plate and used for magnetically attracting the magnetic detachable strip, and the master control unit is in data connection with the electromagnet.

[0014] Preferably, the outer wall of the metal main body is provided with a T-shaped groove, and the side wall of the magnetic detachable strip is provided with a T-shaped strip, and the T-shaped strip is located in the T-shaped groove.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] ①The master control unit can send instructions to the driving motor, the driving motor can drive the measured gear to rotate, the rotation speed sensor is used for collecting rotation speed information of the measured gear, the data collector can process the rotation speed information, and the processed data can be sent to the master control unit, the master control unit compares the rotation speed information, judges whether the data collected by the rotation speed sensor is accurate, and compensates and calibrates the driving of the driving motor;

[0017] ②The synchronous ring body is arranged on the rotating shaft, the heating piece can heat the thermal bimetallic strip in the receiving groove after the electrically controlled trolley moves to different positions, the thermal bimetallic strip is deformed, and the simulation tooth is recovered into the receiving groove, the tooth defect is simulated, when the synchronous ring body and the measured gear rotate with the rotating shaft, the tooth defect state of the synchronous ring body produces radial vibration, the rotation speed information collected by the rotation speed sensor can reflect the response characteristics of the rotation speed sensor under different vibration conditions, the performance of the rotation speed sensor can be more comprehensively evaluated, and more accurate calibration can be performed. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments description. Obviously, the drawings in the following description are only the preferred embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0019] Figure 1 A schematic diagram of a principle of an automatic calibration system of a rotational speed sensor with increased disturbance for the present application;

[0020] Figure 2 A schematic diagram of a connection structure of a disturbance applying mechanism and a rotating shaft of an automatic calibration system of a rotational speed sensor with increased disturbance for the present application;

[0021] Figure 3 A schematic diagram of a structure of a synchronous ring body of an automatic calibration system of a rotational speed sensor with increased disturbance for the present application;

[0022] Figure 4 A sectional view of a synchronous ring body of an automatic calibration system of a rotational speed sensor with increased disturbance for the present application;

[0023] Figure 5 A schematic diagram of a connection structure of a moving trolley and a ring track of an automatic calibration system of a rotational speed sensor with increased disturbance for the present application;

[0024] Figure 6 A schematic diagram of a structure of a simulation tooth of an automatic calibration system of a rotational speed sensor with increased disturbance for the present application;

[0025] In the figure, 1 is a measured gear, 2 is a gear disc, 3 is a driving motor, 4 is a rotating shaft, 5 is a rotational speed sensor, 6 is a rotational speed meter, 7 is a data collector, 8 is a main control unit, 9 is a synchronous ring body, 10 is a thermal bimetallic strip, 11 is a simulation tooth, 12 is a connecting rod, 13 is an electrically controlled trolley, 14 is a heating sheet, 15 is a first electric push rod, 16 is a first abutting plate, 17 is a storage groove, 18 is a ring track, 19 is a driving layer, 20 is a driven layer, 21 is a limiting groove, 22 is a moving main body, 23 is a double-shaft motor, 24 is a driving wheel, 25 is an auxiliary wheel, 26 is a second electric push rod, 27 is a second abutting plate, 28 is a gasket, 29 is an electric sliding table, 30 is a third electric push rod, 31 is a pushing plate, 32 is a metal main body part, 33 is a magnetically detachable strip, 34 is an electromagnet, 35 is a T-shaped groove, and 36 is a T-shaped strip. DETAILED DESCRIPTION

[0026] In order to better understand the technical content of the present application, a specific embodiment is provided below, and the present application is further described in combination with the drawings.

[0027] Reference Figures 1 to 6The application provides an automatic calibration system of a rotational speed sensor with disturbance increase, which comprises a measured gear 1, a gear disc 2, a driving motor 3, a rotating shaft 4, a rotational speed sensor 5, a rotating speed meter 6, a data collector 7, a main control unit 8 and a disturbance applying mechanism, the measured gear 1 is arranged on the gear disc 2, the output shaft of the driving motor 3 is connected with one end of the rotating shaft 4, the other end of the rotating shaft 4 is connected with the measured gear 1, the rotational speed sensor 5 is arranged on one side of the measured gear 1, the data collector 7 is connected with the rotating speed meter 6, the rotational speed sensor 5 and the main control unit 8 in data, and the main control unit 8 is connected with the driving motor 3 in data, the disturbance applying mechanism comprises a synchronous ring body 9, a thermal bimetallic strip 10, an analog gear 11, a connecting rod 12, an electric control trolley 13, a locking mechanism, a heating piece 14, a first electric push rod 15 and a first abutting plate 16, the synchronous ring body 9 is sleeved on the rotating shaft 4, a plurality of receiving grooves 17 are arranged on the outer circumferential surface of the synchronous ring body 9 at intervals, the thermal bimetallic strip 10 is connected with the inner walls of the receiving grooves 17 on the two sides, one end of the analog gear 11 extends into the receiving groove 17, the connecting rod 12 is connected with the end portions of the thermal bimetallic strip 10 and the analog gear 11, the thermal bimetallic strip 10 is curved towards the center of the synchronous ring body 9 when heated, the inner circumferential surface of the synchronous ring body 9 is provided with an annular track 18, the electric control trolley 13 moves in the annular track 18 and is locked through the locking mechanism, the heating piece 14 is arranged on the side wall of the electric control trolley 13 away from the center of the synchronous ring body 9, the receiving groove 17 is located outside the moving path of the heating piece 14, the first electric push rod 15 is embedded in the inner circumferential surface of the synchronous ring body 9, the output shaft of the first electric push rod 15 is connected with one side of the first abutting plate 16, the rotating shaft 4 passes through between the first abutting plates 16, and the main control unit 8 is connected with the electric control trolley 13, the locking mechanism, the heating piece 14 and the first electric push rod 15 in data.

[0028] The automatic calibration system of the rotational speed sensor 5 with disturbance increase is used for calibrating the rotational speed detection result of the rotational speed sensor 5, the main control unit 8 can send a control instruction to the driving motor 3, the standard rotational speed information of the driving motor 3 is contained in the control instruction, then the driving motor 3 can drive the rotating shaft 4, the rotating shaft 4 can drive the measured gear 1 on the end portion to rotate, the non-contact rotational speed sensor 5 is arranged on one side of the measured gear 1, the rotational speed information of the measured gear 1 can be collected, and the rotational speed information is processed and transmitted through the data collector 7, the actual rotational speed information after processing is transmitted to the rotating speed meter 6 for display and to the main control unit 8, the main control unit 8 compares the standard rotational speed information and the actual rotational speed information, judges whether the rotational speed information collected by the rotational speed sensor 5 is accurate, and then the driving motor 3 is transmitted with multiple control instructions, so that the driving motor 3 and the rotational speed sensor 5 are calibrated multiple times.

[0029] In order to make the information collection of the rotating speed sensor 5 more close to the actual situation, the application sets a disturbance applying mechanism, the rotating shaft 4 is sleeved with a synchronous ring body 9, a plurality of receiving grooves 17 are arranged on the outer circumferential surface of the synchronous ring body 9, and an analog tooth 11 is arranged in each receiving groove 17, the analog tooth 11 is normally extended to the outside of the synchronous ring body 9, that is, the synchronous ring body 9 and the analog tooth 11 can be used to simulate a normal gear, the inner circumferential surface of the synchronous ring body 9 is embedded with a first electric push rod 15, the first electric push rod 15 can drive a first abutting plate 16 to abut on the outer wall of the rotating shaft 4, so that the synchronous ring body 9 can rotate synchronously with the rotating shaft 4 and the measured gear 1, a thermal bimetallic strip 10 is arranged in each receiving groove 17, the thermal bimetallic strip 10 is connected with the analog tooth 11 through a connecting rod 12, when the thermal bimetallic strip 10 is heated, it will bend to the inside of the receiving groove 17, so as to drive the analog tooth 11 to be retracted into the receiving groove 17, so as to simulate the tooth loss state of the analog tooth 11, when the rotating shaft 4 drives the synchronous ring body 9 in the tooth loss state to rotate, the tooth loss will cause the eccentric rotation of the synchronous ring body 9, so as to drive the rotating shaft 4 to vibrate radially and be transmitted to the measured gear 1, at this time, the rotating speed information collected by the rotating speed sensor 5 can reflect the response characteristics of the rotating speed sensor 5 under different vibration conditions, the performance of the rotating speed sensor 5 can be more comprehensively evaluated, and more accurate calibration can be carried out, in addition, the heating time of the thermal bimetallic strip 10 is different, the bending degree is also different, so the depth of the analog tooth 11 descending into the receiving groove 17 can be adjusted, different tooth heights can be simulated, and different disturbances can be provided.

[0030] An annular track 18 is arranged on the inner circumferential surface of the synchronous ring body 9, and an electric control trolley 13 can move in the annular track 18, so as to drive a heating piece 14 to move to the inside of different receiving grooves 17, when the heating piece 14 is powered and heated, heat can be transmitted into the receiving groove 17, so as to heat the thermal bimetallic strip 10 and make the thermal bimetallic strip 10 deform, the form of the electric control trolley 13 can realize the storage of different positions of the analog tooth 11, simulate different positions and different numbers of tooth loss, further enrich the diversity of the disturbance, so as to calibrate the rotating speed sensor 5 more accurately.

[0031] Preferably, the thermal bimetallic strip 10 comprises a driving layer 19 and a passive layer 20 arranged in a superposition mode, the driving layer 19 and the passive layer 20 are connected with the inner wall of the receiving groove 17 on both sides, the passive layer 20 is arranged on the side of the driving layer 19 facing the center of the synchronous ring body 9, the connecting rod 12 connects the side of the driving layer 19 away from the passive layer 20 and the analog tooth 11, and the thermal bimetallic strip 10 bends to the passive layer 20 when heated.

[0032] The active layer 19 is a manganese-nickel-copper alloy layer, and the passive layer 20 is a nickel-iron alloy layer. The passive layer 20 is arranged inward. When the thermal bimetallic strip 10 is heated, the thermal bimetallic strip 10 as a whole will bend towards the passive layer 20 because the thermal expansion coefficient of the passive layer 20 is lower than that of the active layer 19, so that the analog teeth 11 are driven by the connecting rod 12 to be recovered into the storage groove 17, and when the temperature of the thermal bimetallic strip 10 decreases, the thermal bimetallic strip 10 will slowly deform and recover, thereby driving the analog teeth 11 to move outward to reset, so as to accommodate other different positions of the analog teeth 11 to simulate missing teeth.

[0033] Preferably, the annular track 18 is provided with a limiting groove 21 on both sides, the electric control trolley 13 includes a moving body 22, a double-shaft motor 23 and a driving wheel 24, the moving body 22 is located in the annular track 18, the double-shaft motor 23 is arranged in the moving body 22, the output shaft of the double-shaft motor 23 extends out of the moving body 22 and is connected with the driving wheel 24, the driving wheel 24 is located in the limiting groove 21, and the main control unit 8 is in data connection with the moving body 22. The heating sheet 14 is arranged on the side wall of the moving body 22 away from the center of the synchronous ring body 9.

[0034] The moving body 22 is located in the annular track 18 as a whole, the driving wheels 24 on both sides of the moving body 22 are located in the limiting grooves 21, the double-shaft motor 23 can drive the driving wheels 24 to rotate, so that the driving wheels 24 can move in the limiting grooves 21, drive the whole moving body 22 to move along the annular track 18, and thus the heating sheet 14 can be driven to move to the inside of different storage grooves 17 to heat the thermal bimetallic strip 10.

[0035] Preferably, the electric control trolley 13 further includes an auxiliary wheel 25, and the auxiliary wheel 25 is arranged on the side wall of the moving body 22 and in contact with the inner side wall of the annular track 18.

[0036] Since the annular track 18 is of an annular structure as a whole, the auxiliary wheel 25 is arranged on the outer side of the moving body 22, and the auxiliary wheel 25 can help the moving body 22 to move smoothly in the process of moving the moving body 22.

[0037] Preferably, the locking mechanism includes a second electric push rod 26 and a second abutting plate 27, the second electric push rod 26 is symmetrically arranged on the top surface of the moving body 22, the output shaft of the second electric push rod 26 extends out of the moving body 22 and is connected with the side wall of the second abutting plate 27, and the main control unit 8 is in data connection with the second electric push rod 26.

[0038] When the simulation tooth 11 is received, the first electric push rod 15 drives the first abutting plate 16 to abut against the rotating shaft 4, at this time, the rotating shaft 4 can drive the synchronous ring body 9 to rotate, in order to ensure the stability of the moving trolley in the annular track 18, the second electric push rod 26 is arranged in the moving trolley, the second electric push rod 26 can drive the second abutting plate 27 to abut against the inner wall of the annular track 18, so as to fix the moving body 22, and avoid the shaking of the moving body 22 in the rotating process of the synchronous ring body 9.

[0039] Preferably, the gasket 28 is arranged on the outer wall of the first abutting plate 16 and the second abutting plate 27 away from the first electric push rod 15 and the second electric push rod 26.

[0040] The gasket 28 arranged can abut against the outer wall of the rotating shaft 4 and the outer wall of the annular track 18, so as to improve the friction and ensure the synchronous rotation of the synchronous ring body 9, the moving body 22 and the rotating shaft 4.

[0041] Preferably, the disturbance applying mechanism further comprises an electric sliding table 29, a third electric push rod 30 and a pushing plate 31, the electric sliding table 29 is arranged on the gear disc 2, the third electric push rod 30 is arranged on the top surface of the mover of the electric sliding table 29, the output shaft of the third electric push rod 30 is connected with the bottom surface of the pushing plate 31, the synchronous ring body 9 is located on the moving path of the pushing plate 31, and the main control unit 8 is in data connection with the electric sliding table 29 and the third electric push rod 30.

[0042] The electric sliding table 29 can drive the third electric push rod 30 and the pushing plate 31 to move, and the third electric push rod 30 can drive the pushing plate 31 to ascend, when the pushing plate 31 ascends to the side of the synchronous ring body 9, under the driving of the electric sliding table 29, the pushing plate 31 can drive the synchronous ring body 9 to move to different positions along the rotating shaft 4, so as to apply different degrees of disturbance.

[0043] Preferably, the simulation tooth 11 comprises a metal main body part 32 and a magnetic detachable strip 33, one end of the metal main body part 32 extends into the receiving groove 17 and is connected with the connecting rod 12, and the magnetic detachable strip 33 is detachably connected with the end of the metal main body part 32 away from the thermal bimetallic strip 10.

[0044] The magnetic detachable strip 33 arranged on the end of the simulation tooth 11 can be detached from the metal main body part 32, so as to simulate the tooth defect state in the actual situation, so as to provide various disturbances to improve the accuracy of the calibration of the rotating speed sensor 5.

[0045] Preferably, the disturbance applying mechanism further comprises an electromagnet 34, the electromagnet 34 is embedded in the top surface of the pushing plate 31 and is used for magnetically attracting the magnetic detachable strip 33, and the main control unit 8 is in data connection with the electromagnet 34.

[0046] The electromagnet 34 is arranged on the top surface of the pushing plate 31, when the tooth defect simulation of the simulation tooth 11 is needed, the third electric push rod 30 can drive the pushing plate 31 to rise, so that the electromagnet 34 rises to the lower side of the magnetic detachable strip 33, then the electromagnet 34 is electrified to magnetically attract the magnetic detachable strip 33, under the drive of the electric sliding table 29, the pushing plate 31 and the electromagnet 34 can drive the magnetic detachable strip 33 to slide out of the metal main body part 32, when the magnetic detachable strip 33 is completely detached, the third electric push rod 30 drives the pushing plate 31 to descend, the side wall of the pushing plate 31 can drive the synchronous ring body 9 to move along the rotating shaft 4.

[0047] Preferably, the outer wall of the metal main body part 32 is provided with a T-shaped groove 35, the side wall of the magnetic detachable strip 33 is provided with a T-shaped strip 36, and the T-shaped strip 36 is arranged in the T-shaped groove 35.

[0048] In order to ensure the quick disassembly and assembly of the metal main body part 32 and the magnetic detachable strip 33, the T-shaped groove 35 is arranged on the outer wall of the metal main body part 32, and the T-shaped strip 36 of the magnetic detachable strip 33 can slide out along the T-shaped groove 35, and the direction of the T-shaped groove 35 is perpendicular to the plane formed by the rotation of the synchronous ring body 9, and under the cooperation of the magnetic force, the magnetic detachable strip 33 can be stably arranged on the metal main body part 32.

[0049] The above only describes the preferred embodiments of the present application and should not be used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A perturbation-increasing rotational speed sensor auto-calibration system, characterized by, The utility model provides a gear test device, including the gear that is measured, gear disc, drive motor, pivot, rotating speed sensor, rotating speed meter, data acquisition device, main control unit and disturbance exerting mechanism, the gear that is measured sets up on gear disc, drive motor output shaft is connected with one end of pivot, the other end of pivot is connected with the gear that is measured, rotating speed sensor sets up in the gear that is measured one side, data acquisition device respectively with rotating speed meter, rotating speed sensor and main control unit data connection, main control unit with drive motor data connection, the disturbance exerting mechanism includes synchronous ring body, hot bimetal, simulation tooth, connecting rod, electric control trolley, locking mechanism, heating piece, first electric push rod and first abutment plate, the synchronous ring body is set in pivot outside, and its outer circumferential surface is provided with a plurality of receiving grooves at intervals, the bimetal both sides are connected with the inner wall of receiving groove, one end of simulation tooth is inserted into receiving groove, the connecting rod connects bimetal and simulation tooth end, when bimetal is heated, it is curved to the center of synchronous ring body, the inner circumferential surface of synchronous ring body is provided with annular track, electric control trolley moves in annular track, and is locked through locking mechanism, heating piece is set on the side wall of electric control trolley away from the center of synchronous ring body, receiving groove is located the outside of the movement path of heating piece, first electric push rod is embedded in the inner circumferential surface of synchronous ring body, and its output shaft is connected with one side of first abutment plate, pivot passes through between first abutment plate, main control unit is connected with electric control trolley, locking mechanism, heating piece and first electric push rod data respectively.

2. A system for automatic calibration of a speed sensor with increased perturbation according to claim 1, characterized in that, The bimetal includes a driving layer and a passive layer arranged in layers, the driving layer and the passive layer are connected to the inner walls of the receiving grooves on both sides, the passive layer is arranged on the side of the driving layer facing the center of the synchronous ring body, the connecting rod is connected to the side of the driving layer away from the passive layer and the simulation tooth, and the bimetal is curved towards the passive layer when heated.

3. A system for automatic calibration of a speed sensor with increased perturbation according to claim 1, characterized in that, The annular track is provided with a limiting groove on both sides, the electric control trolley includes a moving body, a double-shaft motor, and a driving wheel, the moving body is located in the annular track, the double-shaft motor is arranged in the moving body, the output shaft of the double-shaft motor extends out of the moving body and is connected to the driving wheel, the driving wheel is located in the limiting groove, the main control unit is connected to the moving body, and the heating piece is arranged on the side wall of the moving body away from the center of the synchronous ring body.

4. A system for automatic calibration of a speed sensor with increased perturbation according to claim 3, characterized in that, The electric control trolley further includes an auxiliary wheel, the auxiliary wheel is arranged on the side wall of the moving body and is in contact with the inner side wall of the annular track.

5. A system for automatic calibration of a speed sensor with increased perturbation according to claim 3, characterized in that, The locking mechanism includes a second electric push rod and a second abutment plate, the second electric push rod is symmetrically arranged on the top surface of the moving body, the output shaft of the second electric push rod extends out of the moving body and is connected to the side wall of the second abutment plate, and the main control unit is connected to the second electric push rod.

6. A system for automatic calibration of a speed sensor with increased perturbation according to claim 5, characterized in that, It further includes a gasket, which is arranged on the outer wall of the first abutment plate and the second abutment plate away from the first electric push rod and the second electric push rod.

7. A system for automatic calibration of a speed sensor with increased perturbation according to claim 1, characterized in that, The disturbance applying mechanism further comprises an electric sliding table, a third electric push rod and a pushing plate, the electric sliding table is arranged on the gear disc, the third electric push rod is arranged on the top surface of the mover of the electric sliding table, the output shaft of the third electric push rod is connected with the bottom surface of the pushing plate, the synchronous ring body is located on the moving path of the pushing plate, and the main control unit is in data connection with the electric sliding table and the third electric push rod.

8. A system for automatic calibration of a speed sensor with increased perturbation according to claim 6, characterized in that, The simulation tooth comprises a metal main body part and a magnetic detachable strip, one end of the metal main body part extends into the receiving groove and is connected with the connecting rod, and the magnetic detachable strip is detachably connected with the end of the metal main body part away from the thermal bimetallic strip.

9. A system for automatic calibration of a speed sensor with increased perturbation according to claim 8, characterized in that, The disturbance applying mechanism further comprises an electromagnet, the electromagnet is embedded in the top surface of the pushing plate and is used for magnetically attracting the magnetic detachable strip, and the main control unit is in data connection with the electromagnet.

10. A system for automatic calibration of a speed sensor with increased perturbation according to claim 8, characterized in that, The outer wall of the metal main body part is provided with a T-shaped groove, and the side wall of the magnetic detachable strip is provided with a T-shaped strip, and the T-shaped strip is located in the T-shaped groove.

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