CN216900603U - Fan rotating speed testing system - Google Patents
Fan rotating speed testing system Download PDFInfo
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- CN216900603U CN216900603U CN202220246361.4U CN202220246361U CN216900603U CN 216900603 U CN216900603 U CN 216900603U CN 202220246361 U CN202220246361 U CN 202220246361U CN 216900603 U CN216900603 U CN 216900603U
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- fan
- laser sensor
- testing system
- speed testing
- resistor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model relates to a fan rotating speed testing system which comprises an opposite laser sensor and a PLC (programmable logic controller) counter, wherein the transmitting end of the opposite laser sensor is arranged on one side of a fan and is opposite to a fan blade, the receiving end of the opposite laser sensor is arranged on the other side of the fan and is corresponding to the transmitting end and is used for receiving an optical signal of the transmitting end, and the output pin of the receiving end is connected to the PLC counter, wherein the output pin is connected to the acquisition end pin of the PLC counter after being connected with a pull-up resistor of 10K omega. The timing circuit can improve the working stability and safety of the timing circuit, and meanwhile, the working safety of equipment can be improved.
Description
Technical Field
The utility model relates to a fan rotating speed testing system.
Background
In a traditional fan silicone oil clutch test system, a method for measuring the rotating speed of a fan is to paste reflective paper on a fan page, then a laser reflection sensor is used for aligning the reflective paper, the fan rotates, and the laser sensor counts through reflected signals and converts the actual rotating speed. However, there are several disadvantages in practical application testing: 1. the reflective paper is stuck once every time the fan is replaced, so that the paper is wasted; 2. in the testing process, the reflective paper may fall off during the rotation of the fan, and the test is abnormal once the reflective paper falls off; 3. because the diameters of different fans are different, the laser reflection sensor needs to adjust the correlation position according to the condition of the fan, and the process of adjusting the correlation position is troublesome and is not easy to calibrate; 4. the reflected signals are interfered, and the deviation of the measured rotating speed is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fan rotating speed testing system which can improve the working stability and safety of a timing circuit and can improve the working safety of equipment.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a fan rotating speed testing system which comprises a correlation laser sensor and a PLC (programmable logic controller) counter, wherein an emitting end of the correlation laser sensor is arranged on one side of a fan and is opposite to a fan blade, a receiving end of the correlation laser sensor is arranged on the other side of the fan and is corresponding to the emitting end and is used for receiving an optical signal of the emitting end, an output pin of the receiving end is connected into the PLC counter, and the output pin is connected with a pull-up resistor of 10K omega and then is connected into a collecting end pin of the PLC counter.
For the above technical solution, the applicant has further optimization measures.
Optionally, an isolation capacitor of 0.033UF is connected to the acquisition terminal pin, and an output pin of the transmitting terminal is connected to the pull-up resistor and then is fed into the acquisition terminal pin through the isolation capacitor.
Optionally, a brightness adjusting knob is externally connected to the transmitting terminal.
Further, the operating voltage of the correlation laser sensor is 24V.
Furthermore, a 24V high level is connected in series with the pull-up resistor, and the other end of the pull-up resistor is connected with the output pin.
Optionally, the correlation laser sensor is an NPN-type laser sensor.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the fan rotating speed testing system provided by the utility model utilizes the correlation laser sensor and the electronic device for eliminating interference, overcomes the defects in the existing testing system, better meets the requirements of fan production testing, and has higher testing accuracy and stability.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic diagram of the operation of a fan speed testing system according to one embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a PLC counter in the fan speed testing system according to an embodiment of the present invention.
The reference numerals are explained below:
1. the device comprises a transmitting end of the correlation laser sensor, 2, a receiving end of the correlation laser sensor, 21, an output pin of the receiving end, 3, a pull-up resistor, 4, a PLC processor, 5 and a fan.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment describes a fan rotation speed testing system, as shown in fig. 1, the fan rotation speed testing system includes an opposite laser sensor and a PLC counter 4, a transmitting end 1 of the opposite laser sensor is disposed on one side of a fan 5 and faces a fan blade, a receiving end 2 of the opposite laser sensor is disposed on the other side of the fan 5 and corresponds to the transmitting end 1, and is configured to receive an optical signal of the transmitting end 1, an output pin 21 of the receiving end 2 is connected to the PLC counter 4, wherein the output pin 21 is connected to a collecting end pin of the PLC counter 4 after being connected to a pull-up resistor 3 of 10K Ω, and thus interference signals can be effectively reduced.
In order to further reduce the interference signal in the circuit, the schematic circuit diagram of the PLC counter 4 is shown in fig. 2, an isolation capacitor of 0.033UF is connected to a pin 6 of the PLC counter 4 serving as a collection pin, and the output pin 21 of the transmitting terminal 1 is connected to the pull-up resistor 3 and then is fed to the collection pin through the isolation capacitor.
The transmitting terminal 1 is externally connected with a brightness adjusting knob, the intensity of emitted light can be flexibly adjusted according to the field working condition, the receiving terminal 2 is ensured to accurately and effectively receive the emitted light, and the testing accuracy is improved.
In this embodiment, the coherent laser sensor is an NPN-type laser sensor, and the operating voltage of the coherent laser sensor is 24V.
As for the setting of the pull-up resistor 3, a 24V high level is connected in series to the pull-up resistor 3, and the other end of the pull-up resistor 3 is connected to the output pin 21.
In summary, the fan speed testing system of the embodiment utilizes the correlation laser sensor and the interference-eliminating electronic device to solve the defects of the existing testing system, better meets the requirements of fan production testing, and has higher testing accuracy and stability.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (6)
1. A fan rotating speed testing system is characterized by comprising an opposite laser sensor and a PLC (programmable logic controller) counter, wherein a transmitting end of the opposite laser sensor is arranged on one side of a fan and is opposite to a fan blade, a receiving end of the opposite laser sensor is arranged on the other side of the fan and corresponds to the transmitting end and is used for receiving an optical signal of the transmitting end, an output pin of the receiving end is connected into the PLC counter, and the output pin is connected into a collecting end pin of the PLC counter after being connected with a pull-up resistor of 10K omega.
2. The fan speed testing system according to claim 1, wherein an isolation capacitor of 0.033UF is connected to the collection terminal pin, and an output pin of the transmitting terminal is connected to the pull-up resistor and then fed into the collection terminal pin through the isolation capacitor.
3. The fan speed testing system of claim 1 wherein the transmitter is externally connected to a brightness adjustment knob.
4. The fan speed testing system of any of claims 1-3, wherein the operating voltage of the correlation laser sensor is 24V.
5. The fan speed test system according to claim 4, wherein a 24V high level is connected in series with the pull-up resistor, and the other end of the pull-up resistor is connected to the output pin.
6. The fan speed testing system of claim 1, wherein the correlation laser sensor is an NPN-type laser sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220246361.4U CN216900603U (en) | 2022-01-30 | 2022-01-30 | Fan rotating speed testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220246361.4U CN216900603U (en) | 2022-01-30 | 2022-01-30 | Fan rotating speed testing system |
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| Publication Number | Publication Date |
|---|---|
| CN216900603U true CN216900603U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202220246361.4U Active CN216900603U (en) | 2022-01-30 | 2022-01-30 | Fan rotating speed testing system |
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| Country | Link |
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| CN (1) | CN216900603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327214A (en) * | 2022-10-13 | 2022-11-11 | 国网山东省电力公司高密市供电公司 | High-voltage equipment live indicating device and high-voltage equipment live judging method |
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2022
- 2022-01-30 CN CN202220246361.4U patent/CN216900603U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327214A (en) * | 2022-10-13 | 2022-11-11 | 国网山东省电力公司高密市供电公司 | High-voltage equipment live indicating device and high-voltage equipment live judging method |
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