CN211783504U - North seeking mechanism and inertia detection device - Google Patents
North seeking mechanism and inertia detection device Download PDFInfo
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- CN211783504U CN211783504U CN202020883535.9U CN202020883535U CN211783504U CN 211783504 U CN211783504 U CN 211783504U CN 202020883535 U CN202020883535 U CN 202020883535U CN 211783504 U CN211783504 U CN 211783504U
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Abstract
The application relates to an inertia detection device and a north-seeking mechanism, wherein the north-seeking mechanism comprises a motor, a speed reducer and an inertia detection device; the motor comprises a shell and a motor shaft, wherein one end of the motor shaft extends out of the shell and is connected with one end of the speed reducer; the speed reducer comprises a speed reducer output shaft, and the other end of the speed reducer output shaft is connected with the inertia detection device. This application can be when detecting the motor shaft turned angle condition with reduction gear output shaft, can reduce the turned angle error of motor shaft again to the influence of inertia detection device's detection precision, and then improve and seek north precision. In the prior art, the motor is directly connected with the inertia detection device, so that when the rotation angle of the motor has an error, the detection result of the inertia detection device is greatly influenced, and the north-seeking precision is reduced. Therefore, compared with the prior art, the method has better north-seeking precision.
Description
Technical Field
The application relates to the field of measurement, in particular to a north seeking mechanism and an inertia detection device.
Background
The existing north seeker generally adopts a mode that a motor is directly connected with an inertia measurement unit, the inertia measurement unit is driven by the rotation angle of the motor, and the data of the inertia measurement unit at a plurality of different positions are analyzed to obtain the true north direction, however, the north seeking precision of the mode is limited by the motor precision; namely, when the motor precision is insufficient, the resolved north-seeking precision is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome at least the above-mentioned deficiencies in the prior art, the present application provides an inertial detection device and a north-seeking mechanism for providing north-seeking accuracy.
A first aspect of the present application provides a north-seeking mechanism, which includes a motor, a speed reducer, and an inertia detecting device;
the motor comprises a shell and a motor shaft, wherein one end of the motor shaft extends out of the shell and is connected with one end of the speed reducer;
the speed reducer comprises a speed reducer output shaft, and the other end of the speed reducer output shaft is connected with the inertia detection device.
In this application first aspect, through being connected reduction gear output shaft and inertia detection device, can make that inertia detection device detects be the turned angle of reduction gear output shaft, so, just can detect the motor shaft turned angle condition with reduction gear output shaft connection, can reduce the influence of the turned angle error of motor shaft to inertia detection device's detection precision again, and then improve and seek north precision. In the prior art, the motor is directly connected with the inertia detection device, so that when the rotation angle of the motor has an error, the detection result of the inertia detection device is greatly influenced, and the north-seeking precision is reduced.
In the first aspect of the present application, as an optional implementation manner, the motor is a stepping motor.
In this optional embodiment, since the stepping motor is favorable to the accurate control, and then the motor is selected as the stepping motor, the north-seeking precision can be further improved.
In the first aspect of the present application, as an alternative embodiment, the speed reducer is a gear speed reducer.
In this alternative embodiment, the reducer is selected as a gear reducer, which facilitates adjustment of the gear ratio between the reducer and the motor.
In the first aspect of the present application, as an optional implementation manner, the motor further includes a first gear, and the speed reducer further includes a second gear, and the first gear is in gear connection with the second gear.
In this optional embodiment, the first gear of the motor is connected to the second gear of the speed reducer, so that the ratio of the rotation angle between the speed reducer and the motor can be adjusted by the number of the first gear and the second gear, thereby reducing the influence of the rotation angle error of the motor on the north-seeking precision.
In the first aspect of the present application, as an optional embodiment, a ratio of the number of teeth of the first gear to the number of teeth of the second gear is between 5:1 and 15: 1.
In the optional embodiment, the ratio of the number of teeth of the first gear to the number of teeth of the second gear is set to be 5:1 to 15:1, so that the influence of the rotation angle error of the motor on the north-seeking precision can be reduced, and meanwhile, the speed reducer and the motor can be conveniently installed by an operator.
In the first aspect of the present application, as an optional embodiment, a ratio of the number of teeth of the first gear to the number of teeth of the second gear is 10: 1.
In this alternative embodiment, the operator can be further facilitated to install the reducer and the motor by setting the ratio of the number of teeth of the first gear to the number of teeth of the second gear to 10: 1.
The second aspect of the application provides an inertia detection device, inertia detection device is applied to this first aspect of the application in seeking north mechanism, inertia detection device includes central processing unit, gyroscope, the gyroscope with central processing unit electric connection, the gyroscope is used for detecting the turned angle of reduction gear output shaft and will the turned angle of reduction gear output shaft is input extremely central processing unit, central processing unit is used for the basis the turned angle output earth true north angle of reduction gear output shaft.
In the second aspect of the present application, the rotation angle of the speed reducer can be detected by the gyroscope, and the accuracy of the central processing unit in calculating the true north angle of the earth can be improved.
In the second aspect of the present application, as an optional implementation manner, the inertia detecting apparatus further includes a motor controller, an input end of the motor controller is electrically connected to the central processing unit, an output end of the motor controller is electrically connected to the motor, and the motor controller is configured to receive the processing signal sent by the central processing unit and convert the processing signal into a motor control signal.
In the second aspect of the present application, in this alternative embodiment, the processing signal sent by the central processing unit may be converted into a motor control signal executable by the motor controller.
In the second aspect of the present application, as an optional implementation manner, the inertia detecting device further includes a photoelectric encoder, and the photoelectric encoder is electrically connected to the motor controller.
In this optional embodiment, the accuracy of controlling the motor by the motor controller can be further improved by the feedback signal of the photoelectric encoder, so that the error of the rotation angle of the motor is reduced, and the north-seeking accuracy is further improved.
In the second aspect of the present application, as an alternative embodiment, the gyroscope is a micromechanical gyroscope.
In the optional embodiment, the micromechanical gyroscope has the advantages of high precision and low noise, so that the detection precision of the speed reducer can be improved by adopting the micromechanical gyroscope.
Synthesize, this application is through being connected reduction gear output shaft and inertia detection device, can make that inertia detection device detects be the turned angle of reduction gear output shaft, so, just can be when detecting the motor shaft turned angle condition with reduction gear output shaft connection, can reduce the influence of the turned angle error of motor shaft to inertia detection device's detection precision again, and then improve and seek north precision. In the prior art, the motor is directly connected with the inertia detection device, so that when the rotation angle of the motor has an error, the detection result of the inertia detection device is greatly influenced, and the north-seeking precision is reduced. Therefore, compared with the prior art, the method has better north-seeking precision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a north-seeking mechanism disclosed in an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a north-seeking mechanism according to an embodiment of the present application.
Wherein the reference numerals are: the device comprises a motor 1, a motor shaft 11, a speed reducer 2, a speed reducer output shaft 21 and an inertia detection device 3;
gyroscope 101, motor controller 102, central processing unit 103, and photoelectric encoder 104.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
Referring to fig. 1, fig. 1 is a schematic structural diagram of a north-seeking mechanism disclosed in the embodiment of the present application. As shown in fig. 1, the north-seeking mechanism of the embodiment of the present application includes a motor 1, a speed reducer 2, and an inertia detecting device 3;
the motor 1 comprises a shell and a motor shaft 11, wherein one end of the motor shaft 11 extends out of the shell and is connected with one end of the speed reducer 2;
the speed reducer 2 includes a speed reducer output shaft 21, and the other end of the speed reducer output shaft 21 is connected to the inertia detection device 3.
In the embodiment of the present application, the reducer output shaft 21 is connected to the inertia detecting device 3, so that the rotation angle of the reducer output shaft 21 is detected by the inertia detecting device 3, and thus, while the rotation angle of the motor shaft 11 connected to the reducer output shaft 21 is detected, the influence of the rotation angle error of the motor shaft 11 on the detection precision of the inertia detecting device 3 can be reduced, and the north seeking precision is further improved. In the prior art, the motor 1 is directly connected with the inertia detection device 3, so that when the rotation angle of the motor 1 has an error, the detection result of the inertia detection device 3 is greatly influenced, and the north-seeking precision is reduced.
In the embodiment of the present application, as an alternative implementation, the motor 1 is a stepping motor. Further optionally, the stepper motor is a variable reluctance stepper motor.
In this optional embodiment, since the stepping motor is favorable to the precise control, and further the motor 1 is selected as the stepping motor, the north-seeking precision can be further improved. On the other hand, the variable reluctance stepping motor can improve the control flexibility of the motor 1.
In the present embodiment, as an alternative, the speed reducer 2 is a gear speed reducer 2.
In this alternative embodiment, the reducer 2 is selected as the gear reducer 2, and the rotation angle of the reducer 2 is related to the rotation angle of the motor 1 through gear engagement between the gears, and then the rotation angle is determined by
The gear ratio between the reducer and the motor 1 is adjusted, and the ratio between the rotation angle of the reducer 2 and the rotation angle of the motor 1 is adjusted.
As an alternative embodiment, the motor 1 further includes a first gear, and the reducer 2 further includes a second gear, and the first gear is connected with the second gear.
In the optional embodiment, the first gear of the motor 1 is connected with the second gear of the speed reducer 2 through a gear, and the ratio of the rotation angle between the speed reducer 2 and the motor 1 can be adjusted through the number of the first gear and the second gear, so that the influence of the rotation angle error of the motor 1 on the north-seeking precision is reduced.
In the embodiment of the application, the ratio of the tooth number of the first gear to the tooth number of the second gear is 5:1 to 15:1 as an optional implementation mode.
In the optional embodiment, the ratio of the number of teeth of the first gear to the number of teeth of the second gear is set to be 5:1 to 15:1, so that the influence of the rotation angle error of the motor 1 on the north-seeking precision can be reduced, and meanwhile, the speed reducer 2 and the motor 1 can be conveniently installed by an operator.
In the embodiment of the application, as an optional implementation mode, the ratio of the tooth number of the first gear to the tooth number of the second gear is 10: 1.
In this alternative embodiment, the operator can further facilitate the installation of the reducer 2 and the motor 1 by setting the ratio of the number of teeth of the first gear to the number of teeth of the second gear to 10: 1.
In addition, this application embodiment still provides an inertia detection device. Referring to fig. 2, fig. 2 is a schematic circuit diagram of a north-seeking mechanism according to an embodiment of the present disclosure. As shown in fig. 2, the north-seeking mechanism includes an inertia detecting device and a motor, wherein the inertia detecting device 3 includes a central processing unit 103 and a gyroscope 101, the gyroscope 101 is electrically connected to the central processing unit 103, the gyroscope 101 is configured to sense the earth rotation speed when the reducer output shaft 21 rotates to different angles and input the sensed earth rotation speed to the central processing unit 103, and the central processing unit 103 is configured to calculate and output the true north angle of the earth according to the rotation angle of the reducer output shaft 21 and the output of the gyroscope 101 at different positions.
In the embodiment of the present application, the rotation angle of the speed reducer 2 can be detected by the gyroscope 101, so that the accuracy of the central processing unit 103 in calculating the true north angle of the earth can be improved.
In the embodiment of the present application, as an optional implementation manner, the inertia detecting apparatus 3 further includes a motor controller 102, an input end of the motor controller 102 is electrically connected to the central processing unit 103, an output end of the motor controller 102 is electrically connected to the motor 1, and the motor controller 102 is configured to receive a processing signal sent by the central processing unit 103 and convert the processing signal into a control signal of the motor 1.
In the embodiment of the present application, in this optional implementation, the motor controller 102 may convert the processing signal sent by the central processing unit 103 into a motor 1 control signal executable by the motor 1.
In the embodiment of the present application, as an optional implementation manner, the inertia detecting apparatus 3 further includes a photoelectric encoder 104, an input end of the photoelectric encoder 104 is electrically connected to an output end of the motor controller 102, and an output end of the photoelectric encoder 104 is electrically connected to the motor 1.
In this optional embodiment, the feedback signal of the photoelectric encoder 104 can further improve the accuracy of the motor controller 102 controlling the motor 1, thereby reducing the error of the rotation angle of the motor 1, and further improving the north-seeking accuracy.
In the embodiment of the present application, as an alternative implementation, the gyroscope 101 is a micromechanical gyroscope.
In the optional embodiment, the micromechanical gyroscope has the advantages of high precision and low noise, so that the detection precision of the speed reducer can be improved by adopting the micromechanical gyroscope.
It can be seen that, this application is connected through reducing gear output shaft and inertia detection device, can make that inertia detection device detects be the turned angle of reducing gear output shaft, so, just can reduce the influence of the turned angle error of motor shaft to inertia detection device's detection precision again when detecting the motor shaft turned angle condition with reducing gear output shaft connection, and then improve and seek north precision. In the prior art, the motor is directly connected with the inertia detection device, so that when the rotation angle of the motor has an error, the detection result of the inertia detection device is greatly influenced, and the north-seeking precision is reduced. Therefore, compared with the prior art, the method has better north-seeking precision.
The above description is only for various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and all such changes or substitutions are included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A north-seeking mechanism is characterized by comprising a motor, a speed reducer and an inertia detection device;
the motor comprises a shell and a motor shaft, wherein one end of the motor shaft extends out of the shell and is connected with one end of the speed reducer;
the speed reducer comprises a speed reducer output shaft, and the other end of the speed reducer output shaft is connected with the inertia detection device.
2. The north-seeking mechanism of claim 1 wherein the motor is a stepper motor.
3. The north-seeking mechanism according to claim 1, wherein the speed reducer is a gear speed reducer.
4. The north-seeking mechanism according to claim 3, wherein the motor further includes a first gear, and the decelerator further includes a second gear, the first gear being in gear connection with the second gear.
5. The north-seeking mechanism of claim 4 wherein the ratio of the number of teeth of the first gear to the number of teeth of the second gear is between 5:1 and 15: 1.
6. The north-seeking mechanism of claim 5 wherein the ratio of the number of teeth of the first gear to the number of teeth of the second gear is 10: 1.
7. An inertia detecting device, wherein the inertia detecting device is applied to the north seeking mechanism according to claim 1, the inertia detecting device comprises a central processing unit and a gyroscope, the gyroscope is electrically connected with the central processing unit, the gyroscope is used for detecting the rotation angle of the output shaft of the speed reducer and inputting the rotation angle of the output shaft of the speed reducer to the central processing unit, and the central processing unit is used for outputting the true north angle of the earth according to the rotation angle of the output shaft of the speed reducer.
8. The inertia detection assembly of claim 7, further comprising a motor controller, wherein an input of the motor controller is electrically connected to the central processing unit, an output of the motor controller is electrically connected to the motor, and the motor controller is configured to receive a processing signal from the central processing unit and convert the processing signal into a motor control signal.
9. The inertial detection device of claim 8, further comprising a photoelectric encoder electrically connected to the motor controller.
10. Inertial detection device according to any one of claims 7 to 9, characterised in that said gyroscope is a micromechanical gyroscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883535.9U CN211783504U (en) | 2020-05-22 | 2020-05-22 | North seeking mechanism and inertia detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883535.9U CN211783504U (en) | 2020-05-22 | 2020-05-22 | North seeking mechanism and inertia detection device |
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| CN211783504U true CN211783504U (en) | 2020-10-27 |
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| CN202020883535.9U Active CN211783504U (en) | 2020-05-22 | 2020-05-22 | North seeking mechanism and inertia detection device |
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