CN219102509U - Microphone support device and audible noise measuring apparatus - Google Patents
Microphone support device and audible noise measuring apparatus Download PDFInfo
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- CN219102509U CN219102509U CN202223419896.6U CN202223419896U CN219102509U CN 219102509 U CN219102509 U CN 219102509U CN 202223419896 U CN202223419896 U CN 202223419896U CN 219102509 U CN219102509 U CN 219102509U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The utility model relates to microphone supporting equipment and an audible noise measuring device, which comprise a height-adjustable bracket, a microphone fixing cantilever arm, a microphone electric shielding cover and an induced charge grounding device, wherein the microphone fixing cantilever arm is fixedly connected with the height-adjustable bracket, the microphone electric shielding cover is fixedly connected with the cantilever end of the microphone fixing cantilever arm, and the induced charge grounding device is electrically connected with the microphone electric shielding cover, the height-adjustable bracket and a conductor part of the microphone fixing cantilever arm. The method can reduce the interference of the audible noise signals during the measurement of the audible noise and improve the measurement precision of the audible noise.
Description
Technical Field
The utility model relates to the technical field of audible noise measurement of power transmission lines, in particular to microphone supporting equipment and an audible noise measuring device.
Background
The noise of the transmission line is a noise which can be directly heard by human ears and is generated when air around a guide wire is subjected to corona discharge. The method for measuring the audible noise of the transmission line is systematically regulated in DL/T501-2017 of the method for measuring the audible noise of the transmission line of the high-voltage overhead transmission line.
The Chinese patent document CN108645510A, which is disclosed in 2018, 10 and 12, describes a noise monitoring device for a high-voltage alternating-current transmission line, and comprises a bracket main body, a noise detection probe, a control display panel and a monitoring controller, wherein the noise detection probe, the control display panel and the monitoring controller are arranged on the bracket main body, the bracket main body comprises a tripod body and a support column arranged at the upper end of the tripod body, the side surface of the support column is provided with the control display panel, the upper end of the support column is provided with a horizontal support plate, a telescopic probe support is rotationally connected on the horizontal support plate, the end part of the probe support is provided with a probe fixer, the noise detection probe is arranged on the probe fixer, the tripod body comprises a connecting disc and three pins connected with the connecting disc, the lower end of each pin is provided with a support leg, the bottom end of each support leg is provided with a pin, the lower end of the connecting disc is provided with a telescopic fixing rod, and the lower end of the telescopic fixing rod is provided with a lifting ring. In the technical scheme, the influence of the power transmission line on the induced charge of the microphone circuit cannot be eliminated, the interference in the output signal is large, and the audible noise signal cannot be easily and accurately extracted.
Disclosure of Invention
The utility model aims to provide microphone supporting equipment and an audible noise measuring device, so as to solve the technical problem that the existing audible noise measuring device is large in interference when measuring audible noise.
The technical scheme of the utility model is as follows:
the utility model provides a microphone supporting equipment, includes high adjustable support, microphone fixed cantilever arm, microphone electrical shield cover and induction charge earthing device, the microphone fixed cantilever arm with high adjustable support fixed connection, microphone electrical shield cover with the fixed cantilever arm's of microphone cantilever end fixed connection, induction charge earthing device with microphone electrical shield cover the high adjustable support with conductor electricity in the microphone fixed cantilever arm is connected.
Preferably, the microphone fixing device further comprises a positioning device, and the positioning device is fixedly connected with the microphone fixing cantilever arm.
Preferably, the positioning device selects a cross positioning target with a numerical number.
Preferably, the induced charge grounding means comprises an electrically connected copper wire and copper plated grounding drill steel.
Preferably, the height-adjustable support comprises a triangular support, a height-adjusting guide rod and a locking part, wherein a guide hole is formed in a connecting table of the triangular support, the height-adjusting guide rod is movably connected with the guide hole, and the locking part is used for fixedly connecting the height-adjusting guide rod with the connecting table in the upward direction of uranium in the guide hole.
The utility model provides an audible noise measuring device, includes microphone, audible noise correlation meteorological sensor, sampling circuit, control processor, output device and aforesaid microphone supporting equipment, the microphone has N (N is greater than or equal to 11), the microphone sets up in the microphone electrical shield cover and with fixed cantilever fixed connection of microphone, the leading-out end wire of microphone with fixed cantilever fixed connection of microphone.
Preferably, the audible noise related weather sensor includes a wind speed sensor, a temperature sensor and a humidity sensor.
The beneficial effects of the utility model are as follows:
1. in practice, the audible noise points may be different, and therefore, in the microphone support device of the present utility model, a height-adjustable stand is necessary. When the microphone is used, the microphone is arranged in the microphone electrical shielding cover and is fixedly connected with the microphone fixing cantilever arm, so that the microphone is far away from the height adjusting bracket, and the influence of the height adjusting bracket on the measurement accuracy of audible noise can be avoided. After the conductors in the microphone electrical shielding cover, the height-adjustable bracket and the microphone fixing cantilever arm are grounded through the induction charge grounding device, the electrical neutrality of the microphone electrical shielding cover, the height-adjustable bracket and the microphone fixing cantilever arm can be kept, and the influence on the accuracy of audible noise measurement is avoided.
2. In the microphone supporting equipment, the positioning device is mainly used for accurately setting the relative position of the audible noise measuring point so as to facilitate the transverse audible noise measurement of the power transmission line.
3. In the microphone supporting equipment, the height-adjustable support comprises the triangular support, the height-adjusting guide rod and the locking part, wherein the connecting table of the triangular support is provided with the guide hole, the height-adjusting guide rod is movably connected with the guide hole, and the locking part is used for fixedly connecting the height-adjusting guide rod and the connecting table in the uranium direction of the guide hole. The height-adjustable support is simple in structure, is a general piece, and is low in manufacturing cost.
4. When the audible noise measuring device is used, the microphone is arranged in the microphone electrical shielding cover and is fixedly connected with the microphone fixing cantilever arm, and the lead-out end lead of the microphone is fixedly connected with the microphone fixing cantilever arm, so that the microphone is far away from the height adjusting bracket, and the influence of the height adjusting bracket on the measurement accuracy of audible noise can be avoided. The leading-out end lead of the microphone is fixedly connected with the microphone fixing cantilever arm, so that the problem that the position setting of the microphone is not uniform due to the fact that the leading-out end lead of the microphone drags the microphone can be avoided.
5. According to the audible noise measuring device, the audible noise related meteorological sensor comprises the wind speed sensor, the temperature sensor and the humidity sensor, so that meteorological data required by audible noise can be synchronously acquired when the audible noise is measured.
Drawings
FIG. 1 is one of the reference diagrams of the usage status of an audible noise measuring device;
FIG. 2 is a second reference diagram of the usage status of an audible noise measuring device.
FIG. 3 is a view showing a reference of a state of use of a microphone support apparatus;
fig. 4 is a structural view of a height-adjustable bracket of a microphone support apparatus.
Reference numerals illustrate: 11-transmission towers, 12-transmission lines, 21-transmission corridor noise measuring points, 22-transmission corridor noise testing measuring points, 23-background noise measuring points, 3-meteorological data measuring points, 4-control processors, 51-height-adjustable supports, 52-microphone fixing cantilever arms, 53-microphone electrical shielding covers, 54-positioning devices, 55-induced charge grounding devices, 61-microphones, 62-microphone lead-out end wires and 63-wind covers.
Detailed Description
The present utility model is described in the following embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the utility model. The following examples and technical terms therein should not be construed to depart from the technical knowledge of the art unless otherwise indicated.
Example 1: an audible noise measuring device, see fig. 1-2, comprising microphones, an audible noise-related weather sensor, a sampling circuit, a control processor and an output device, said microphones having N) N.gtoreq.11), said microphones being mounted on a microphone support device. In this embodiment, there are 23 microphones.
When the microphone is an analog sensor, the microphone and the sampling circuit form a digital sensor. When the audible noise related weather sensor is an analog sensor, the audible noise related weather sensor and the sampling circuit form a digital sensor. In general, the sampling circuit includes an amplifying circuit, a filtering circuit, and an analog-to-digital conversion circuit, where an output end of the amplifying circuit is electrically connected to an input end of the filtering circuit, and an output end of the filtering circuit is electrically connected to an analog input end of the analog-to-digital conversion circuit. The control processor can be a singlechip, a PLC, an industrial personal computer and an electronic computer. The output device may be a display, a speaker, a printer, a facsimile machine, or the like. The noise signal output end of each microphone is electrically connected with the input end of the amplifying circuit of one sampling circuit, and the digital output end of one sampling circuit is electrically connected with the input end of the control processor. The control processor is electrically connected with the output device.
The method for measuring the audible noise of the high-voltage overhead transmission line is prescribed in DL/T501-2017, and when the audible noise is measured in a short period, the minimum meteorological data which is required to be recorded by the alternating-current overhead transmission line comprises rainfall condition and wind speed; the minimum meteorological data to be recorded by the direct current overhead transmission line comprises wind speed and relative humidity; the minimum meteorological data to be recorded when audible noise is measured for a long period include rainfall, wind speed, temperature and humidity. Accordingly, audible noise related weather sensors include wind speed sensors, temperature sensors, and humidity sensors, and may also include rain sensors.
The wind speed signal output end of the wind speed sensor is electrically connected with the input end of the amplifying circuit of the sampling circuit, and the digital output end of the sampling circuit is electrically connected with the input end of the control processor. The temperature signal output end of the temperature sensor is electrically connected with the input end of the amplifying circuit of the sampling circuit, and the digital output end of the sampling circuit is electrically connected with the input end of the control processor. The humidity signal output end of the humidity sensor is electrically connected with the input end of the amplifying circuit of a sampling circuit, and the digital output end of the sampling circuit is electrically connected with the input end of the control processor. The rainfall signal output end of the rainfall sensor is electrically connected with the input end of the amplifying circuit of the sampling circuit, and the digital output end of the sampling circuit is electrically connected with the input end of the control processor.
Referring to fig. 3, the microphone supporting apparatus used in this embodiment includes a height-adjustable bracket 51, a microphone fixing cantilever arm 52, a positioning device 54, a microphone electrical shield cover 53 and an induced charge grounding device 55, the microphone fixing cantilever arm 52 is fixedly connected to the height-adjustable bracket 51, the microphone electrical shield cover 53 is fixedly connected to the cantilever end of the microphone fixing cantilever arm 52, the induced charge grounding device 55 is electrically connected to conductors in the microphone electrical shield cover 53, the height-adjustable bracket 51 and the microphone fixing cantilever arm 52, the positioning device 54 is fixedly connected to the microphone fixing cantilever arm 52, and in use, a microphone 61 is disposed in the microphone electrical shield cover 53 and is fixedly connected to the microphone fixing cantilever arm 52, a lead-out terminal wire 62 of the microphone is fixedly connected to the microphone fixing cantilever arm 52, and a ground of the induced charge grounding device 55 is grounded.
The method for measuring audible noise of high-voltage overhead transmission line is described in DL/T501-2017, wherein the noise measuring point is arranged at a position which is vertical to the transmission line and is more than 1.2m above the ground when the transverse attenuation characteristic of audible noise of the high-voltage overhead transmission line is provided. In practice, the ground level of the audible noise site may be different, and therefore, a height adjustable stand is necessary.
The microphone is arranged in the microphone electrical shielding cover and is fixedly connected with the microphone fixing cantilever arm, and the lead-out end lead of the microphone is fixedly connected with the microphone fixing cantilever arm, so that the microphone is far away from the height adjusting bracket, and the influence of the height adjusting bracket on the measurement accuracy of audible noise can be avoided. The leading-out end lead of the microphone is fixedly connected with the microphone fixing cantilever arm, so that the problem that the position setting of the microphone is not uniform due to the fact that the leading-out end lead of the microphone drags the microphone can be avoided. After the conductor parts of the microphone electrical shielding cover, the height-adjustable bracket and the microphone fixing cantilever are grounded through the induced charge grounding device, the electric neutrality of the microphone electrical shielding cover can be maintained, and the accuracy of audible noise measurement is prevented from being influenced.
The positioning device is mainly used for assisting in measuring the coordinates of N-1 audible noise measuring points.
In this embodiment, the positioning device selects a cross positioning target with a numerical number.
In this embodiment, the induced charge grounding device comprises a copper wire and a copper plated grounding drill rod electrically connected. When in use, the copper-plated grounding steel drill rod is inserted on the ground.
Referring to fig. 4, in this embodiment, the height-adjustable support includes a tripod, a height-adjusting guide rod and a locking portion, a guide hole is provided on a connection platform of the tripod, the height-adjusting guide rod is movably connected with the guide hole, and the locking portion is used for fixedly connecting the height-adjusting guide rod and the connection platform in a uranium direction of the guide hole.
The tripod can be used for installing the total station, and the tripod of the embodiment can be formed by arranging the guide holes on the connecting table of the tripod.
The locking part can be a fastening bolt, a positioning pin or an internal thread. When the locking part is a positioning pin, a pin hole is arranged on the heightening guide rod. When the locking part is an internal thread, an external thread matched with the internal thread is arranged on the heightening guide rod.
The utility model is described in detail above with reference to the drawings and examples. It should be understood that the description of all possible embodiments is not intended to be exhaustive or to limit the inventive concepts disclosed herein to the precise form disclosed. The technical characteristics of the above embodiments are selected and combined, specific parameters are experimentally changed by those skilled in the art, or the technical means disclosed in the present utility model are conventionally replaced by the prior art in the technical field, which is not paid with creative work, and all the specific embodiments are implicitly disclosed in the present utility model.
Claims (7)
1. The utility model provides a microphone supporting equipment, includes high adjustable support, microphone fixed cantilever arm, microphone electrical shield cover, its characterized in that still includes induction charge earthing device, the microphone fixed cantilever arm with high adjustable support fixed connection, microphone electrical shield cover with the fixed cantilever arm's of microphone cantilever end fixed connection, induction charge earthing device with microphone electrical shield cover the high adjustable support with conductor electricity in the microphone fixed cantilever arm is connected.
2. The microphone support device of claim 1 further comprising a positioning device fixedly coupled to the microphone mounting boom.
3. The microphone support apparatus of claim 2 wherein the positioning means selects a cross-shaped positioning target with a numerical number.
4. The microphone support device of claim 1 wherein the induced charge grounding means comprises an electrically connected copper wire and copper plated grounding drill steel.
5. The microphone support apparatus as claimed in claim 1, wherein the height-adjustable bracket includes a tripod, a height-adjusting guide bar movably connected to the guide hole, and a locking part for fixedly connecting the height-adjusting guide bar and the connection table in a uranium direction of the guide hole.
6. An audible noise measuring device comprises a microphone, an audible noise related weather sensor, a sampling circuit, a control processor and an output device, wherein the microphone is provided withN(N11) the microphone assembly of any one of claims 1-5, wherein the microphone is disposed within the microphone electrical shield and is fixedly connected to the microphone mounting tab, and wherein the lead-out lead of the microphone is fixedly connected to the microphone mounting tab.
7. The audible noise measurement device of claim 6, wherein the audible noise-related weather sensor comprises a wind speed sensor, a temperature sensor, and a humidity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223419896.6U CN219102509U (en) | 2022-12-20 | 2022-12-20 | Microphone support device and audible noise measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223419896.6U CN219102509U (en) | 2022-12-20 | 2022-12-20 | Microphone support device and audible noise measuring apparatus |
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| Publication Number | Publication Date |
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| CN219102509U true CN219102509U (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223419896.6U Active CN219102509U (en) | 2022-12-20 | 2022-12-20 | Microphone support device and audible noise measuring apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115840094A (en) * | 2022-12-20 | 2023-03-24 | 国网河南省电力公司电力科学研究院 | Method for constructing lateral audible noise model of power transmission corridor, microphone supporting device, and audible noise measuring apparatus |
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2022
- 2022-12-20 CN CN202223419896.6U patent/CN219102509U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115840094A (en) * | 2022-12-20 | 2023-03-24 | 国网河南省电力公司电力科学研究院 | Method for constructing lateral audible noise model of power transmission corridor, microphone supporting device, and audible noise measuring apparatus |
| CN115840094B (en) * | 2022-12-20 | 2023-10-03 | 国网河南省电力公司电力科学研究院 | Construction method of transverse audible noise model of power transmission corridor |
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