Magnetic angle detectors

Abstract

The present invention relates to a magnetic angle detector comprising: a sleeve with a magnet, and a detection component. The sleeve with the magnet is coaxially mounted on the end of a shaft to be measured and emits identification magnetic lines of force. The detection component is disposed separately from the sleeve with the magnet. The detection component senses the identification magnetic lines of force and outputs a corresponding shaft rotation signal, calculates rotation angle information based on the shaft rotation signal, displays the rotation angle of the shaft to be measured based on the rotation angle information, and resets the rotation angle information to zero by triggering a reset switch.

Description

Technical Field

[0001] The present invention relates to the technical field of detectors, and in particular to a magnetic angle detector. Background Art

[0002] A prime mover is a driving device in mechanical equipment. Specifically, a prime mover converts electrical or thermal energy into mechanical energy, using this mechanical energy as motive force to perform specific operations. Examples include electric motors, steam engines, and internal combustion engines. For example, a stepper motor or servo motor is a motor whose shaft serves as the power output and is connected to the load at the application end. Therefore, the rotation angle (or speed) of this shaft is the target parameter of interest to field personnel.

[0003] Measuring the shaft's rotational angle during rotation is clearly a field engineering challenge that technicians in this field urgently need to address and resolve. Furthermore, after the shaft's rotational angle is measured, a core issue remains: how to display the angle to familiarize field personnel. Furthermore, when the shaft experiences axial displacement, existing devices cannot accurately measure the angle. Summary of the Invention

[0004] Therefore, the object of the present invention is to provide a magnetic angle detector that can accurately measure the rotation angle information of the shaft to be measured and provide the rotation angle information needed by on-site workers when the shaft is displaced in the axial direction.

[0005] The technical means adopted by the present invention to solve the problems of the prior art is to provide a magnetic angle detector, including: a sleeve with a magnet, which is coaxially installed on the end of the shaft to be measured so that the sleeve with the magnet rotates and moves axially with the shaft to be measured, and the sleeve with the magnet emits identification magnetic lines in the extension direction of the end; and a detection component, which is separated from the sleeve with the magnet in the extension direction of the end of the shaft to be measured to avoid direct contact between the detection component and the sleeve with the magnet, wherein the detection component has a magnetic sensor, a computing and processing unit, a shaft status display unit and a reset switch, the magnetic sensor senses the strength and direction of the identification magnetic lines emitted by the sleeve with the magnet at the current position and the shaft status display unit. An axial displacement signal and a rotational displacement signal are obtained by the change between the strength and direction of the identification magnetic lines emitted by the shaft sleeve of the magnet at the previous position. The calculation and processing unit is electrically connected to the magnetic sensor to receive the axial displacement signal and the rotational displacement signal of the shaft body and combine them to calculate the correct rotation angle information. Therefore, when the shaft body to be tested has axial displacement, the correct rotation angle information can still be obtained. The shaft body status display unit is electrically connected to the calculation and processing unit to receive the rotation angle information. The shaft body status display unit displays the rotation angle of the shaft body to be tested according to the rotation angle information, and the reset switch is electrically connected to the calculation and processing unit. The reset switch is configured to be triggered when the user needs it to reset the rotation angle information calculated by the shaft body rotation signal to zero.

[0006] In one embodiment of the present invention, a magnetic angle detector is provided, wherein the detecting component has a packaging shell, and the magnetic sensor and the computing processing unit are installed inside the packaging shell.

[0007] In one embodiment of the present invention, a magnetic angle detector is provided, wherein the shaft state display unit is installed on the outer surface of the packaging shell to display the rotation angle indication.

[0008] In one embodiment of the present invention, a magnetic angle detector is provided, wherein the shaft state display unit has a plurality of indicator components.

[0009] In one embodiment of the present invention, a magnetic angle detector is provided, wherein one of the plurality of indicating components is a system status indicator light.

[0010] In one embodiment of the present invention, a magnetic angle detector is provided, wherein the reset switch is disposed on an outer surface or inside of the packaging shell to be triggered by pressing.

[0011] The technical means adopted by the magnetic angle detector of the present invention can achieve the following technical effects: even when the shaft is displaced in the axial direction, the rotation angle information of the shaft to be measured can still be accurately measured, and the on-site staff can be informed of the rotation angle information; in addition, the calculated rotation angle information can be reset to zero when the user needs it. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 FIG. 1 is a schematic diagram illustrating the arrangement between a magnetic angle detector and a shaft to be measured according to an embodiment of the present invention.

[0013] Figure 2 FIG. 1 is a block diagram of a detection component of a magnetic angle detector according to an embodiment of the present invention.

[0014] Figure 3 FIG. 1 is a partial cross-sectional schematic diagram of a magnetic angle detector according to an embodiment of the present invention.

[0015] Figure 4 A schematic diagram showing the rotation angle of the shaft to be measured according to an embodiment of the present invention is shown.

[0016] Figure 5 FIG2 is a schematic diagram showing that the magnetic angle detector according to an embodiment of the present invention resets the rotation angle information to zero after being triggered.

[0017] Figure 6 FIG. 1 is a schematic diagram of a magnetic angle detector according to an embodiment of the present invention sensing the axial displacement of the shaft to be measured.

[0018] Reference numerals

[0019] 100 Magnetic Angle Detector

[0020] 1 Bushing with magnet

[0021] 2 Detection components

[0022] 20 Package shell

[0023] 20H connecting hole

[0024] 21 Magnetic sensor

[0025] 22 computing processing units

[0026] 23-axis status display unit

[0027] 231 indicator component

[0028] 231A System Status Indicator

[0029] 24 Reset switch

[0030] M Identify magnetic lines of force

[0031] M1 Identify magnetic lines of force

[0032] M2 Identify magnetic lines of force

[0033] S axis to be tested DETAILED DESCRIPTION

[0034] The following is based on Figures 1 to 6 , and illustrate the embodiment of the present invention. This description is not intended to limit the embodiment of the present invention, but is one example of the present invention.

[0035] like Figures 1 to 3 As shown, a magnetic angle detector 100 according to an embodiment of the present invention comprises: a sleeve 1 with a magnet, and a detection component 2. The magnetic angle detector 100 of the present invention is capable of measuring the rotation angle information of the shaft body S to be measured, and providing the on-site staff with the rotation angle information; in addition, the present invention enables the rotation angle information calculated from the shaft body rotation signal to be reset to zero when the user requires it. Moreover, the present invention also allows the shaft body S to be measured to be displaced forward and backward in the axial direction and still obtain the correct rotation angle information, and can avoid the situation where the shaft body S to be measured collides with the sleeve 1 with a magnet against the detection component 2.

[0036] like Figure 1 as well as Figure 3 As shown, the sleeve 1 with a magnet is coaxially installed on the end of the shaft S to be tested, so that the sleeve 1 with a magnet rotates and moves axially along with the shaft S to be tested; and the sleeve 1 with a magnet emits an identification magnetic line M in the extension direction toward the end.

[0037] Furthermore, according to an embodiment of the magnetic angle detector 100 of the present invention, the sleeve 1 having a magnet may be a sleeve member provided with a strong magnet, wherein the strong magnet is arranged on the end surface of the sleeve member in a manner facing the magnetic sensor 21 (not shown in the drawings of the present invention).

[0038] like Figures 1 to 3 As shown, the detection member 2 is provided separately from the magnet-bearing sleeve 1 in the extending direction of the end portion of the shaft body S to be tested. Therefore, the present invention eliminates direct contact between the detection member 2 and the magnet-bearing sleeve 1, thereby allowing the shaft body S to be tested to move forward and backward in the axial direction while still obtaining accurate rotation angle information without causing the magnet-bearing sleeve 1 to contact the detection member 2.

[0039] In detail, Figures 1 to 3As shown, the detection component 2 includes a magnetic sensor 21, a calculation and processing unit 22, a shaft status display unit 23, and a reset switch 24. The magnetic sensor 21 is aligned with the shaft sleeve 1 having a magnet to sense the rotation and axial displacement changes of the identification magnetic field lines M during the rotation of the shaft S to be tested, and outputs a corresponding shaft rotation signal. The calculation and processing unit 22 is electrically connected to the magnetic sensor 21 to receive the shaft axial displacement signal and the rotational displacement signal and combine and calculate the correct rotation angle information based on them. The shaft status display unit 23 is electrically connected to the calculation and processing unit 22 to receive the rotation angle information. The shaft status display unit 23 displays a rotation angle indication regarding the rotation of the shaft S to be tested based on the rotation angle information. The reset switch 24 is electrically connected to the calculation and processing unit 22, and is configured to reset the rotation angle information calculated from the shaft rotation signal to zero when triggered.

[0040] Specifically, if Figures 1 to 3 As shown, according to an embodiment of the present invention, a magnetic angle detector 100 includes a detection component 2 having an encapsulating housing 20. The magnetic sensor 21 and the processing unit 22 are mounted within the encapsulating housing 20. In a specific embodiment of the present invention, the encapsulating housing 20 may have a connecting hole 20H formed therethrough and positioned correspondingly to the magnetic sensor 21 and the shaft sleeve 1 with a magnet; thus, the identification magnetic field lines M emitted by the shaft sleeve 1 with a magnet can be transmitted to the magnetic sensor 21 through the connecting hole 20H.

[0041] like Figure 1 、 Figure 4 as well as Figure 5 As shown, according to an embodiment of the magnetic angle detector 100 of the present invention, the shaft state display unit 23 of the detection member 2 is mounted on the outer surface of the encapsulating housing 20 to display the rotation angle. Therefore, on-site personnel can visually observe the shaft state display unit 23 to understand the rotational changes of the shaft S to be measured during the rotation process (that is, the on-site personnel can clearly understand the current rotation angle of the shaft S to be measured).

[0042] Furthermore, if Figure 1 、 Figure 4 as well as Figure 5 As shown, according to one embodiment of the present invention, the magnetic angle detector 100 includes a plurality of indicator components 231 . For example, the indicator components 231 may be LED bulbs. On-site personnel can determine the current rotation angle of the shaft S under test based on the number or combination of illuminated indicator components 231 .

[0043] like Figure 1 、 Figure 4 as well as Figure 5 As shown, according to one embodiment of the present invention, a magnetic angle detector 100 includes a reset switch 24 disposed on the exterior surface or interior of the housing 20 for triggering by pressing. Specifically, the reset switch 24 is a push-button switch; however, the present invention is not limited thereto. The reset switch 24 may also be a knob-type switch for on-site personnel to turn to reset the rotation angle information to zero.

[0044] As described above, according to the embodiment of the present invention, the magnetic angle detector 100, through the configuration of the shaft sleeve 1 with a magnet and the detection member 2, can measure the rotational angle information of the shaft S to be measured. Furthermore, the shaft status display unit 23 of the detection member 2 provides on-site personnel with a visual indication of the rotational angle information.

[0045] Furthermore, if Figure 1 、 Figure 3 as well as Figure 6 As shown, when the shaft S to be tested is displaced in the axial direction, the magnetic sensor 21 of the detection component 2 can detect the displacement of the shaft S to be tested in the axial direction by sensing the change between the intensity of the identification magnetic field line M1 (or M2) emitted by the shaft sleeve 1 with a magnet at the current position and the intensity of the identification magnetic field line M emitted by the shaft sleeve 1 with a magnet at the previous position. For example, when the magnetic sensor 21 senses the intensity of the identification magnetic field line M1 ( Figure 6 ) is greater than the strength of the identification magnetic field line M ( Figure 1 、 Figure 3 ), it can be known that the displacement of the shaft body S to be measured in the axial direction is moving toward the detection member 2; and when the magnetic sensor 21 senses the intensity of the identification magnetic field line M2 ( Figure 6 ) is less than the strength of the identification magnetic field line M ( Figure 1 、 Figure 3 ), it can be known that the displacement of the shaft S to be tested in the axial direction is moving away from the detection component 2. Figure 2 as well as Figure 6 The axial displacement signal obtained by the magnetic sensor 21, which senses the change between the strength of the identification magnetic field line M and the strength of the identification magnetic field lines M1 and M2, can also be used to obtain axial displacement information through calculation by the calculation processing unit 22. In other words, even if the shaft S to be measured is displaced in the axial direction, the present invention can still accurately measure the rotation angle information of the shaft S to be measured by combining the detection and calculation of the shaft rotation signal and the axial displacement signal.

[0046] The above description and explanation are only for the preferred embodiments of the present invention. Those skilled in the art may make other modifications based on the protection scope defined above and the above explanation. However, these modifications should still be within the spirit of the present invention and within the protection scope of the present invention.

[0047] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims

1. A magnetic angle detector, characterized in that: The detector comprises: A sleeve with a magnet, the sleeve with a magnet being coaxially mounted on an end portion of a shaft to be measured so that the sleeve with a magnet rotates and moves axially along with the shaft to be measured, and the sleeve with a magnet emits identifying magnetic lines of force in an extending direction toward the end portion; and The detection component is arranged in an extension direction of the end of the shaft to be tested in a manner separated from the shaft sleeve with a magnet to avoid direct contact between the detection component and the shaft sleeve with a magnet, wherein the detection component has a magnetic sensor, a computing and processing unit, a shaft state display unit and a reset switch, the magnetic sensor obtains an axial displacement signal and a rotational displacement signal by sensing the change between the strength and direction of the identification magnetic lines of force emitted by the shaft sleeve with a magnet at the current position and the strength and direction of the identification magnetic lines of force emitted by the shaft sleeve with a magnet at the previous position, and the computing and processing unit is electrically connected to the magnetic sensor In order to receive the axial displacement signal and the rotational displacement signal of the shaft body and combine them to calculate the correct rotation angle information, the correct rotation angle information can still be obtained under the premise that the shaft body to be measured has axial displacement. The shaft body status display unit is electrically connected to the calculation and processing unit to receive the rotation angle information. The shaft body status display unit displays the rotation angle of the shaft body to be measured according to the rotation angle information, and the reset switch is electrically connected to the calculation and processing unit, and the reset switch is set to be triggered when the user needs it, so that the rotation angle information calculated by the shaft body rotation signal is reset to zero.

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