CN220039388U - Angle measuring system - Google Patents
Angle measuring system Download PDFInfo
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- CN220039388U CN220039388U CN202321353544.7U CN202321353544U CN220039388U CN 220039388 U CN220039388 U CN 220039388U CN 202321353544 U CN202321353544 U CN 202321353544U CN 220039388 U CN220039388 U CN 220039388U
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- receiving area
- spot position
- controller
- detection device
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- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000005476 soldering Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides an angle measurement system, which is matched with a rotating shaft for use, and comprises: the laser device comprises a light spot position detection device, a laser emitter and a controller, wherein the light spot position detection device is arranged opposite to the laser emitter and is electrically connected with the controller; the laser transmitter or the spot position detecting device rotates with the rotation axis, the spot position detecting device includes a laser receiving area, and when the rotation axis rotates, the laser receiving area receives an optical signal emitted by the laser transmitter and outputs a current signal to the controller. The system comprises a laser receiving area, a laser emitter, a laser spot position detection device, a controller, a rotating angle, a measuring precision and a frequency of outputting the rotating angle, wherein the laser receiving area receives an optical signal sent by the laser emitter after rotation, the laser receiving area receives the optical signal sent by the laser emitter after rotation through the laser emitter or the light spot position detection device and rotates along with a rotating shaft, the current signal is output to the controller, the controller gives out the rotating angle, the measuring precision is higher, the processing calculation capacity of the rotating angle is higher, and the frequency of outputting the rotating angle is higher.
Description
Technical Field
The utility model relates to the technical field of photoelectric measurement, in particular to an angle measurement system.
Background
The existing shafting rotation angle measurement system utilizes a grating encoder to measure the rotation angle, however, when the rotation angle is measured, the grating and the code wheel are required to be measured on a relatively short fixed distance, the relatively long-distance shafting rotation angle cannot be measured, the existing long-distance rotation angle measurement utilizes machine vision measurement, the measurement accuracy is not high, the requirement on the data processing computing capacity of the rotation angle measurement is high, and the output frequency of the rotation angle is low.
Disclosure of Invention
In view of the above, the present utility model aims to provide an angle measurement system, which solves the problems of low accuracy of the conventional rotation angle measurement, high requirement on the data processing and calculating capability of the rotation angle measurement, and low output frequency of the rotation angle.
Based on the above object, the present utility model provides an angle measurement system for use with a rotating shaft, comprising: the laser device comprises a light spot position detection device, a laser emitter and a controller, wherein the light spot position detection device is arranged opposite to the laser emitter and is electrically connected with the controller;
the laser transmitter or the light spot position detection device rotates along with the rotating shaft, the light spot position detection device comprises a laser receiving area, and when the rotating shaft rotates, the laser receiving area receives an optical signal emitted by the laser transmitter and outputs a current signal to the controller.
Optionally, the laser receiving area is annular or arc-shaped.
Optionally, the spot position detecting device further comprises a supporting main board, the supporting main board is provided with the laser receiving area, a through hole for the rotation shaft to pass through is formed in the middle of the main body of the supporting main board, and one end of the rotation shaft passes through the through hole and is fixedly connected with the laser transmitter.
Optionally, the laser emitter includes transmitter and fixed arm, the one end of fixed arm with transmitter fixed connection, the other end with rotation axis fixed connection.
Optionally, the system further comprises a bracket;
the light spot position detection device further comprises a support main board, the support main board is provided with a laser receiving area, the middle of the support main board main body is provided with a through hole for the rotating shaft to pass through and be fixedly connected with the rotating shaft, the laser transmitter is located on the support, and the support and the rotating shaft are arranged at intervals.
Optionally, the laser receiving area is disposed protruding with respect to the support motherboard.
Optionally, the laser receiving area is connected with a plurality of current amplifiers arranged at intervals, and the current amplifiers are fixed on the support main board.
Optionally, a plurality of current dischargers are electrically connected with an AD converter, and the AD converter is fixed on a surface of the support main board away from the current amplifier.
Optionally, the AD converter is electrically connected to a signal processor, and the signal processor is fixed on a surface of the support motherboard far away from the current amplifier.
Optionally, an interface is electrically connected to the signal processor, and the interface is electrically connected to the controller.
From the above, it can be seen that the angle measurement system provided by the utility model is used in cooperation with the rotating shaft, the laser receiving area of the spot position detection device receives the optical signal emitted by the laser emitter, and the laser receiving area receives the optical signal emitted by the rotated laser emitter and outputs the current signal to the controller, the controller gives out the rotating angle, the measurement accuracy is higher, the processing calculation capability for the rotating angle is higher, and the frequency of outputting the rotating angle is higher.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram of a connection structure of a rotation axis, a spot position detecting device and a laser transmitter of an angle measuring system according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a connection structure of a rotation axis, a spot position detecting device, a laser emitter and a support of an angle measuring system according to an embodiment of the present utility model;
FIG. 3 is a schematic top view of a spot position detecting device according to an embodiment of the present utility model;
FIG. 4 is a schematic bottom view of a spot position detecting device according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of an angle measurement system according to an embodiment of the present utility model.
In the accompanying drawings:
1. a rotation shaft; 2. a spot position detecting device; 3. a laser emitter; 4. a laser receiving area; 5. supporting a main board; 6. a current amplifier; 7. an AD converter; 8. a signal processor; 9. an interface; 10. a controller; 11. a through hole; 30. a bracket; 31. and fixing the arm.
Detailed Description
The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present utility model belongs. The terms "first," "second," and the like, as used in embodiments of the present utility model, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 5, an angle measuring system for use with a rotating shaft 1, comprises: the laser device comprises a light spot position detection device 2, a laser emitter 3 and a controller 10, wherein the light spot position detection device 2 is arranged opposite to the laser emitter 3, and the light spot position detection device 2 is electrically connected with the controller 10;
the laser transmitter 3 or the spot position detecting device 2 rotates with the rotation shaft 1, the spot position detecting device 2 includes a laser receiving area 4, and when the rotation shaft 1 rotates, the laser receiving area 4 receives an optical signal emitted from the laser transmitter 3 and outputs a current signal to the controller 10.
Specifically, the laser receiving area 4 of the spot position detecting device 2 receives the optical signal emitted by the laser emitter 3, and the laser emitter 3 or the spot position detecting device 2 rotates along with the rotation axis 1, so that the laser receiving area 4 receives the optical signal emitted by the rotated laser emitter and outputs a current signal to the controller 10, the controller 10 gives a rotation angle, the measurement accuracy is higher, the processing calculation capability for the rotation angle is higher, and the frequency of outputting the rotation angle is higher.
In some embodiments, as shown with reference to fig. 1-3, the laser receiving area 4 is annular or arcuate.
Specifically, the laser receiving area 4 is a photoresistor, a photoelectric position sensor or an annular PSD sensor, and the light spot position detecting device 2 includes a plurality of photoresistors or a plurality of photoelectric position sensors, and the photoresistors or the photoelectric position sensors are arranged to form an annular or arc-shaped laser receiving area, so as to achieve faster acquisition of a rotation angle and improve measurement accuracy; the photoresistor or photoelectric position sensor receives the light signal emitted by the laser emitter 3 and outputs a current signal to the controller 10, and the controller 10 outputs rotation angle data according to the current signal.
In some embodiments, referring to fig. 1 to 3, the spot position detecting device 2 further includes a support main board 5, the support main board 5 is provided with the laser receiving area 4, a through hole 11 through which the rotation shaft 1 passes is provided in a middle part of a main body of the support main board 5, the rotation shaft 1 can rotate relative to the through hole 11, and one end of the rotation shaft 1 passes through the through hole 11 and is fixedly connected with the laser emitter 3.
Specifically, the supporting main board 5 may be a circuit board, the laser receiving area 4 is fixed on the supporting main board 5 through soldering tin, a through hole 11 is formed in the middle of the main body of the supporting main board 5, the rotating shaft 1 penetrates through the through hole 11 and then is fixedly connected with the laser emitter 3, so that the rotating shaft 1 rotates to drive the laser emitter 3 to rotate, an optical signal emitted by the laser emitter 3 changes in an annular or arc angle, the laser receiving area 4 receives a change position of the optical signal emitted by the laser emitter 3 and outputs a current signal to the controller 10, and the controller 10 outputs rotation angle data according to the current signal.
In some embodiments, referring to fig. 1, the laser transmitter 3 includes a transmitter and a fixing arm 31, and one end of the fixing arm 31 is fixedly connected to the transmitter, and the other end is fixedly connected to the rotation shaft 1.
Specifically, the transmitter is fixed to the rotation shaft 1 by a fixing arm 31 so that an optical signal transmitted by the transmitter can be transmitted to the laser light receiving region 4.
In some embodiments, referring to fig. 2, the system further comprises a bracket 30;
the spot position detection device 2 further comprises a support main board 5, the support main board 5 is provided with a laser receiving area 4, the middle part of the main body of the support main board 5 is provided with a through hole 11 for the rotation shaft 1 to pass through and be fixedly connected with the rotation shaft 1, the laser transmitter 3 is positioned on the support 30, and the support 30 and the rotation shaft 1 are arranged at intervals.
Specifically, the supporting main board 5 may be a circuit board, the laser receiving area 4 is fixed on the supporting main board 5 by soldering tin, a through hole 11 is formed in the middle of the main body of the supporting main board 5, and the rotating shaft 1 penetrates through the through hole 11 and then is connected with the supporting main board 5, so that the supporting main board 5 can rotate along with the rotating shaft 1, the laser receiving area 4 rotates, the position of an optical signal sent by the laser transmitter 3 in the laser receiving area can be changed, and the measurement of a rotation angle is realized.
In some embodiments, referring to fig. 1 to 3, the laser receiving area 4 is arranged protruding with respect to the support main 5.
Specifically, the laser receiving area 4 is a photoresistor or a photoelectric position sensor, the laser receiving area 4 is fixed on the supporting main board 5 through soldering tin, the laser receiving area 4 is arranged to be protruded relative to the supporting main board 5, and the photoresistor or the photoelectric position sensor is fixed on the supporting main board 5 to form a protrusion naturally.
In some embodiments, referring to fig. 1 to 4, the laser receiving area 4 is connected to a plurality of current amplifiers 6 disposed at intervals, and the current amplifiers 6 are fixed to the support main 5.
Specifically, the chip type adopted by the current amplifier 6 is exemplified by: any one of LM358, LM348, OP07 and ICL 7650; the input current of the current amplifier 6 ranges from 0.05uA to 500uA, and the output voltage ranges from 0.1V to 10V.
The laser receiving area is divided into a plurality of pins, each pin is connected with a current amplifier 6, so that after the laser receiving area 4 receives the optical signals, the optical signals are transmitted to the laser receiving area 4, the adjacent current amplifiers 6 at the positions where the laser receiving area 4 receives the optical signals transmit the current signals to the controller 10, and the controller 10 outputs rotation angle data according to the current signals.
Further, referring to fig. 3, an exemplary plurality of pins includes a pin a, B, C, D, E, F, a pin a is connected to a current amplifier a, B is connected to a current amplifier B, C is connected to a current amplifier C, D is connected to a current amplifier D, E is connected to a current amplifier E, F is connected to a current amplifier F, when an optical signal emitted from the laser transmitter 3 is transmitted between a pin and B pin, the current amplifier a and the current amplifier B have corresponding outputs of current to the controller 10, and the controller 10 outputs rotation angle data according to a spot position of the laser receiving area 4 and the received current signal, which are calibrated in advance.
When the optical signal sent by the laser transmitter 3 hits the C pin position, the current amplifier B, the current amplifier C and the current amplifier D will output corresponding currents to the controller 10, and the controller 10 outputs rotation angle data according to the spot position of the laser receiving area 4 calibrated in advance and the received current signal.
In some embodiments, referring to fig. 1 to 4, a plurality of the current dischargers are electrically connected to an AD converter 7, and the AD converter 7 is fixed to a side of the support main 5 remote from the current amplifier 6.
Specifically, the model of the AD converter 7 is an AD7606 chip, the AD converter 7 is fixed on one surface of the supporting motherboard 5 far away from the current amplifier 6 through soldering tin, and a pin of the current amplifier 6 penetrates through the supporting motherboard 5 and then is connected with the AD converter 7; the AD converter 7 and the current amplifier 6 are respectively located on two opposite surfaces of the supporting main board 5, so as to save the use space of the supporting main board 5.
In some embodiments, referring to fig. 1 to 4, the AD converter 7 is electrically connected to a signal processor 8, and the signal processor 8 is fixed to a side of the support motherboard 5 away from the current amplifier 6.
Specifically, the signal processor 8 adopts an stm32 chip, the signal processor 8 is fixed on one surface of the support main board 5 far away from the current amplifier 6 through soldering tin, and pins of the current amplifier 6 penetrate through the support main board 5 and then are connected with the signal processor 8; the signal processor 8 and the current amplifier 6 are respectively located on two opposite surfaces of the supporting motherboard 5, so as to save the usage space of the supporting motherboard 5.
In some embodiments, referring to fig. 1 to 4, the signal processor 8 is electrically connected to an interface 9, and the interface 9 is electrically connected to the controller 10.
Specifically, the interface 9 may be any one of HDMI interface 9, type-C interface 9, USB interface 9, VGA interface 9, DVI interface 9; the controller 10 adopts any one of an upper computer PC or a PLC; the signal processor 8 processes the current signal and transmits the processed current signal to the controller 10 through the interface 9, so that the controller 10 outputs rotation angle data according to the current signal.
It should be noted that the embodiments of the present utility model may be further described in the following manner:
the controller 10 stores the spot position of the laser receiving area 4 calibrated in advance.
When the laser emitter 3 is fixed on the rotating shaft 1, the laser emitter 3 rotates along with the rotating shaft 1, the position of the supporting main board 5 is fixed, the position of the laser receiving area 4 where the light signal sent by the laser emitter 3 is hit by the light signal sent by the laser emitter 3 changes, the current amplifier 6 adjacent to the position where the light spot is hit after the light signal sent by the laser receiving area 4 receives the electric signal and sends the electric signal to the AD converter 7, the AD converter 7 converts the electric current signal and then transmits the electric signal to the signal processor 8, the electric signal is processed by the signal processor 8 and then transmitted to the controller 10 through the interface 9, and the controller 10 compares and calculates the position of the light spot calibrated in advance according to the received electric current signal and outputs the corresponding rotation angle value.
When the support main board 5 and the rotation shaft 1 are fixedly connected, the rotation shaft 1 drives the support main board 5 to rotate, the laser receiving area 4 rotates, the laser emitter 3 is fixed through the support 30, the position of the laser receiving area 4 is changed when the light signal emitted by the laser emitter 3 is hit by the laser emitter 3, the current amplifier 6 adjacent to the position where the light spot is hit receives an electric signal after the laser receiving area 4 receives the light signal emitted by the laser emitter 3, the electric signal is sent to the AD converter 7, the AD converter 7 converts the current signal and then transmits the converted current signal to the signal processor 8, the processed current signal is transmitted to the controller 10 through the interface 9, and the controller 10 compares and calculates the position of the light spot calibrated in advance according to the received current signal and outputs a corresponding rotation angle value.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the utility model (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the utility model as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are within the spirit and principles of the embodiments of the utility model, are intended to be included within the scope of the utility model.
Claims (10)
1. An angle measurement system, for use with a rotating shaft (1), comprising: the laser spot detection device comprises a light spot position detection device (2), a laser emitter (3) and a controller, wherein the light spot position detection device (2) is arranged opposite to the laser emitter (3), and the light spot position detection device (2) is electrically connected with the controller;
the laser transmitter (3) or the light spot position detection device (2) rotates along with the rotating shaft (1), the light spot position detection device (2) comprises a laser receiving area (4), and when the rotating shaft (1) rotates, the laser receiving area (4) receives an optical signal sent by the laser transmitter (3) and outputs a current signal to the controller.
2. An angle measurement system according to claim 1, characterized in that the laser receiving area (4) is ring-shaped or arc-shaped.
3. An angle measurement system according to claim 1, wherein the spot position detecting device (2) further comprises a supporting main board (5), the supporting main board (5) is provided with the laser receiving area (4), a through hole (11) for the rotation shaft (1) to pass through is arranged in the middle of the main body of the supporting main board (5), and one end of the rotation shaft (1) passes through the through hole (11) and is fixedly connected with the laser emitter (3).
4. An angle measurement system according to claim 3, characterized in that the laser transmitter (3) comprises a transmitter and a fixed arm (31), one end of the fixed arm (31) being fixedly connected to the transmitter and the other end being fixedly connected to the rotation shaft (1).
5. An angle measurement system according to claim 1, characterized in that the system further comprises a bracket (30);
the spot position detection device (2) further comprises a support main board (5), the support main board (5) is provided with a laser receiving area (4), the middle part of the main body of the support main board (5) is provided with a through hole (11) for the rotating shaft (1) to pass through and be fixedly connected with the rotating shaft (1), the laser transmitter (3) is positioned on the support (30), and the support (30) and the rotating shaft (1) are arranged at intervals.
6. An angle measurement system according to claim 5, characterized in that the laser receiving area (4) is arranged protruding with respect to the support main (5).
7. An angle measuring system according to claim 5, characterized in that the laser receiving area (4) is connected with a plurality of current amplifiers (6) arranged at intervals, the current amplifiers (6) being fixed to the support main plate (5).
8. An angle measurement system according to claim 7, characterized in that a plurality of said current amplifiers are each electrically connected to an AD converter (7), said AD converter (7) being fixed to a side of said support main plate (5) remote from said current amplifiers (6).
9. An angle measurement system according to claim 8, characterized in that the AD converter (7) is electrically connected to a signal processor (8), the signal processor (8) being fixed to the side of the support motherboard (5) remote from the current amplifier (6).
10. An angle measurement system according to claim 9, characterized in that the signal processor (8) is electrically connected with an interface (9), the interface (9) being electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321353544.7U CN220039388U (en) | 2023-05-30 | 2023-05-30 | Angle measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321353544.7U CN220039388U (en) | 2023-05-30 | 2023-05-30 | Angle measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220039388U true CN220039388U (en) | 2023-11-17 |
Family
ID=88735398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321353544.7U Active CN220039388U (en) | 2023-05-30 | 2023-05-30 | Angle measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220039388U (en) |
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2023
- 2023-05-30 CN CN202321353544.7U patent/CN220039388U/en active Active
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