CN211206546U - Phase modulator rotating speed measuring device based on photoelectric principle - Google Patents
Phase modulator rotating speed measuring device based on photoelectric principle Download PDFInfo
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- CN211206546U CN211206546U CN201922132196.0U CN201922132196U CN211206546U CN 211206546 U CN211206546 U CN 211206546U CN 201922132196 U CN201922132196 U CN 201922132196U CN 211206546 U CN211206546 U CN 211206546U
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Abstract
The utility model discloses a phase modulation machine rotational speed measuring device based on photoelectric principle, including light emission unit, constitutional unit and light receiving unit, the constitutional unit includes evenly distributed is the groove of testing the speed on the outer circumference of the fluted disc of phase modulation machine, both mutual dispositions and fixed mounting of light emission unit, light receiving unit for the light that light emission unit sent is received by light receiving unit through the groove of testing the speed, or is blockked by the fluted disc when the fluted disc of phase modulation machine rotates. The utility model has the characteristics of simple structure is reliable, and it is convenient to maintain, and measurement accuracy is high, and this kind of structure installation debugging is simple, does not need extremely accurate mounting process to guarantee to measure the accuracy nature, can also greatly reduce the interference of rotor vibration to measurement accuracy simultaneously, and this method is maintained conveniently in addition, does not need the phase modifier to shut down, can change the sensor inspection when the rotor is high-speed rotatory, very big reduction maintenance work load.
Description
Technical Field
The utility model relates to a phase modulation machine rotational speed is measured, concretely relates to phase modulation machine rotational speed measuring device based on photoelectric principle.
Background
At present, a Hall sensor is adopted for measuring the rotating speed of a phase modulator, and the number of speed measuring grooves passing through a probe in unit time is measured by converting a gap between a sensor probe and a rotor fluted disc into a voltage signal, so that the rotating speed of a rotor is calculated. In order to ensure the measurement accuracy, the clearance between the structural sensor and the fluted disc is only 0.5-1 mm, and the mounting precision is extremely high. The rotor has great vibration in the operation process, especially in the starting stage, which can cause great measurement error, and even the situation that the rotor directly contacts the sensor when rotating and damages the speed measuring probe due to insufficient consideration of the rotor rotation lifting allowance during installation can occur. In addition, the physical deformation of the sensor mounting support can also cause the distortion of the rotating speed measurement. In addition, the clearance between the sensor and the fluted disc is too small, when the sensor is damaged, the sensor cannot be replaced under the condition that the rotor rotates at a high speed, and the maintenance and the overhaul are extremely inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: to the above-mentioned problem of prior art, a phase modulation machine rotational speed measuring device based on photoelectric principle is provided, the utility model has the characteristics of simple structure is reliable, and it is convenient to maintain, and measurement accuracy is high, and this kind of structure installation and debugging is simple, does not need extremely accurate mounting process to guarantee measurement accuracy nature, can also greatly reduce rotor vibration simultaneously to measurement accuracy's interference, and this method maintains conveniently in addition, does not need the phase modulation machine to shut down, can change the sensor inspection when the rotor is high-speed rotatory, very big reduction maintenance work load.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a phase modulation machine rotational speed measuring device based on photoelectric principle, includes light emission unit, constitutional unit and light receiving unit, the constitutional unit includes evenly distributed and tests the speed groove on the fluted disc of phase modulation machine is outer, both mutual dispositions and fixed mounting of light emission unit, light receiving unit for the fluted disc of phase modulation machine rotates the light that light emission unit sent and is received by light receiving unit through testing the speed groove, or is blockked by the fluted disc.
Optionally, the light emitting unit includes a light emitting support and a light emitting module, and the light emitting module is fixed on the light emitting support.
Optionally, the light emitting module is a laser light emitting module.
Optionally, the light emitting module includes a light source and a light emitter, the light source is mounted and fixed on the light emitting support, and the light emitter is mounted at the light source output end of the light source.
Optionally, the light emitter is a light guide bar.
Optionally, the light emitting mount is fixed in place on the ground.
Optionally, the light receiving unit includes a light receiving support and a light receiver, the light receiver is fixedly mounted on the light receiving support, and the light receiver is provided with an output terminal for outputting an electrical signal.
Optionally, the light receiving support is fixed on the ground.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model comprises a light emission unit, a structural unit and a light receiving unit, wherein the structural unit comprises speed measuring grooves uniformly distributed on the outer circumference of a fluted disc of a phase modulator, the light emission unit and the light receiving unit are oppositely arranged and fixedly installed, so that light rays emitted by the light emission unit are received by the light receiving unit or blocked by the fluted disc through the speed measuring grooves when the fluted disc of the phase modulator rotates, thus the signals received by the light receiving unit are discontinuous signals actually, the output electric signals are pulse signals, the fluted disc rotating speed of the phase modulator can be determined according to the frequency of the pulse signals, and the device has the characteristics of simple and reliable structure, convenient maintenance and high measuring precision, and the structure is simple to install and debug, the measuring precision can be ensured without an extremely precise installation process, and simultaneously, the interference of rotor vibration to the measuring precision can be greatly reduced, in addition, the method is convenient to maintain, the phase modifier does not need to be stopped, the sensor can be checked and replaced when the rotor rotates at a high speed, and the overhauling workload is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Illustration of the drawings: 1. a light emitting support; 2. a light source; 3. a light emitter; 4. a light receiving support; 5. an optical receiver.
Detailed Description
As shown in fig. 1, the phase adjuster rotation speed measuring device based on the photoelectric principle of this embodiment includes a light emitting unit ( reference numerals 1, 2, and 3 in fig. 1), a structural unit and a light receiving unit ( reference numerals 4 and 5 in fig. 1), where the structural unit includes a speed measuring groove (shown as b in fig. 1) uniformly distributed on an outer circumference of a fluted disc (shown as a in fig. 1, and a rotating shaft thereof is c) of the phase adjuster, and the light emitting unit and the light receiving unit are arranged and fixed relative to each other, so that light emitted by the light emitting unit is received by the light receiving unit through the speed measuring groove or is blocked by the fluted disc when the fluted disc of the phase adjuster rotates, and thus the signal received by the light receiving unit is actually a discontinuous signal, and the output electrical signal is a pulse signal, and the fluted disc rotation speed of the phase adjuster can be determined according to the frequency of the pulse signal, which has a, the method has the advantages of being convenient to maintain and high in measurement precision, being simple in structure installation and debugging, being capable of guaranteeing measurement precision without an extremely precise installation process, and being capable of greatly reducing interference of rotor vibration on the measurement precision.
As shown in fig. 1, the light emitting unit includes a light emitting support 1 and a light emitting module, and the light emitting module is fixed on the light emitting support 1, so that the light emitting unit can be conveniently installed, and the light emitting unit and the light receiving unit can be stably aligned. In this embodiment, the light emitting module is a laser light emitting module, and has the advantages of good unidirectionality, strong penetrating power, and long measurable distance.
As an alternative embodiment, the light emitting module may directly adopt the light emitting diode as required. In order to improve the luminous intensity of the light emitting module so as to be suitable for a phase modulator with a larger volume, a split type design is adopted in the embodiment: as shown in fig. 1, the light emitting module includes a light source 2 and a light emitter 3, the light source 2 is installed and fixed on the light emitting support 1, and the light emitter 3 is installed at the light source output end of the light source 2, so that the light source 2 can adopt laser light sources with different powers as required, and the light emitter 3 can play a role in guiding laser light emitted by the light source 2, so as to be conveniently aligned with the light receiving unit stably. In this embodiment, the light emitter 3 is a light guide column, and can be made of transparent materials such as glass or acrylic as required.
In this embodiment, the light emitting support 1 is fixed on the ground, so that the light emitting unit is more independent and is not affected by the vibration of the camera, and the light emitting unit and the light receiving unit can be aligned stably.
As shown in fig. 1, the light receiving unit includes a light receiving support 4 and a light receiver 5, the light receiver 5 is mounted and fixed on the light receiving support 4, and the light receiver 5 is provided with an output terminal for outputting an electrical signal, so that the mounting of the light receiving unit can be facilitated, and the stable alignment of the light emitting unit and the light receiving unit can be ensured.
In this embodiment, the light receiving support 4 is fixed on the ground, so that the light receiving unit is more independent and is not affected by the vibration of the camera, and the light emitting unit and the light receiving unit can be aligned stably.
In this embodiment, the depth of the speed measuring groove is 3mm, the width is 4mm, the vibration of the fluted disc of the adjustable camera does not affect the measurement result, the measurement precision does not depend on the precision of the gap between the sensor (the light emitting unit and the light receiving unit) and the fluted disc, the sedimentation deformation of the sensor support (the light emitting support 1 and the light receiving support 4) does not affect the measurement result, and the anti-interference performance is very strong.
In this embodiment, light source 2 and optical receiver 5 all have sufficient safe distance with fluted disc and rotor, and the installation and debugging is simpler, and the operation in-process equipment security is higher, the condition that the sensor (light emission unit, light receiving unit) is broken by the rotor can not appear to the maintenance inspection convenience of sensor (light emission unit, light receiving unit), can overhaul the sensor and maintain under the condition that does not influence the operation of phase modulation machine itself.
The working principle of the phase modulator rotating speed measuring device based on the photoelectric principle is as follows: this embodiment adopts the mode that light emission unit, light receiving unit correlation, makes the light source beat on the light receiving unit through the speed groove on the fluted disc outer circumference of adjusting light emission unit just, and the fluted disc edge shelters from the light source when rotating, makes the light receiving board send pulse signal, and unit time pulse quantity is equal with the rotor rotation through the speed groove quantity, consequently just can confirm the fluted disc rotational speed of phase modifier according to pulse signal's frequency.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a phase modulation machine rotational speed measuring device based on photoelectric principle which characterized in that: including light emission unit, constitutional unit and light receiving unit, the constitutional unit is including evenly distributed on the groove that tests the speed on the fluted disc outer circumference of phase modifier, both mutual dispositions and fixed mounting of light emission unit, light receiving unit for the light that light emission unit sent is received by light receiving unit or is blockked by the fluted disc through testing the speed the groove when the fluted disc of phase modifier rotates.
2. The phase modulation machine rotational speed measuring apparatus according to claim 1, wherein: the light emitting unit comprises a light emitting support (1) and a light emitting module, and the light emitting module is fixedly arranged on the light emitting support (1).
3. The phase modulation machine rotation speed measuring apparatus based on the photoelectric principle according to claim 2, characterized in that: the light emitting module is a laser light emitting module.
4. A phase modulation machine rotation speed measuring apparatus according to claim 2 or 3 based on the photoelectric principle, characterized in that: the light emitting module comprises a light source (2) and a light emitter (3), the light source (2) is fixedly arranged on the light emitting support (1), and the light emitter (3) is arranged at the light source output end of the light source (2).
5. The phase modulation machine rotation speed measuring apparatus based on the photoelectric principle according to claim 4, wherein: the light emitter (3) is a light guide column.
6. The phase modulation machine rotation speed measuring apparatus based on the photoelectric principle according to claim 2, characterized in that: the light emission support (1) is fixedly arranged on the ground.
7. The phase modulation machine rotational speed measuring apparatus according to claim 1, wherein: the light receiving unit comprises a light receiving support (4) and a light receiver (5), wherein the light receiver (5) is fixedly arranged on the light receiving support (4), and the light receiver (5) is provided with an output terminal for outputting an electric signal.
8. The apparatus for measuring the rotational speed of a phase modulation machine according to claim 7, wherein: the light receiving support (4) is fixedly arranged on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132196.0U CN211206546U (en) | 2019-12-03 | 2019-12-03 | Phase modulator rotating speed measuring device based on photoelectric principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132196.0U CN211206546U (en) | 2019-12-03 | 2019-12-03 | Phase modulator rotating speed measuring device based on photoelectric principle |
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| CN211206546U true CN211206546U (en) | 2020-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945728A (en) * | 2021-10-18 | 2022-01-18 | 复旦大学 | Epitaxial reactor tray base rotational speed detection device and epitaxial reactor |
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2019
- 2019-12-03 CN CN201922132196.0U patent/CN211206546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945728A (en) * | 2021-10-18 | 2022-01-18 | 复旦大学 | Epitaxial reactor tray base rotational speed detection device and epitaxial reactor |
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