CN203672481U - Electric equipment noise detection device - Google Patents
Electric equipment noise detection device Download PDFInfo
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- CN203672481U CN203672481U CN201320649833.1U CN201320649833U CN203672481U CN 203672481 U CN203672481 U CN 203672481U CN 201320649833 U CN201320649833 U CN 201320649833U CN 203672481 U CN203672481 U CN 203672481U
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Abstract
The utility model provides an electric equipment noise detection device. The device at least comprises a noise acquisition circuit for detecting noise of electric equipment, and a noise processing circuit having an input terminal connected with an output terminal of the noise acquisition circuit. The noise processing circuit performs noise characteristic analysis according to a noise signal output by the noise acquisition circuit, and outputs a noise characteristic wave. According to the utility model, the electric equipment noise detection device is capable of effectively distinguishing and recognizing noise generated by electric equipment and noise generated by civilian facilities, thereby determining the source of the noise; the actual spread characteristics of the noise of electric equipment are determined, thereby facilitating the arrangement of noise reduction facilities for electric equipment and improving the noise reduction effects; and by analyzing the actual spread characteristics of the noise, whether the noise of electric equipment at residential areas exceeds the standard can be further clearly judged.
Description
Technical field
The utility model relates to a kind of pick-up unit, relates in particular to a kind of power equipment noise detection apparatus.
Background technology
Transformer station produces the facility of noise and comprises transformer, reactor, cooling, air discharging device etc., and especially transformer, reactor primary equipment noise frequency are low, and amplitude is large, can produce serious influence to surrounding resident.Power equipment is along with the variation of load, and marked change also can occur for noise intensity and frequency, therefore, adopts some time periods to detect power equipment noise in present stage technology, can accurately not reflect transformer station's noise intensity.Especially daytime and night, the noise of power equipment has obvious difference.And, the noise detection apparatus of present stage can only detect integrated noise, be difficult to distinguish and identification for the power equipment noise that around civilian installation produces, thereby cause power equipment resident around to produce larger opposing mood to power supply facilities, power equipment occurs often in dispute has installed after denoising device, and daytime, sensory effect was good, but at night, surrounding resident still complains noise large, cannot distinguishing noise whether from power equipment; On the other hand, because the noise actual propagation characteristic that power equipment is produced does not have enough understandings, when power equipment is installed to noise reducing apparatus, often process for experience and general knowledge, the noise of power equipment can not be reduced well.
In view of this, a kind of power equipment noise detection apparatus need to be proposed, the noise that the noise that can produce power equipment and civilian installation produce is distinguished and identification effectively, makes supplier of electricity and power equipment resident around can determine source, avoids occurring dispute; On the other hand, can, according to the noisiness of power equipment, arrange the noise-reducing device of power equipment, strengthen noise reduction.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of power equipment noise detection apparatus, the noise that the noise that can produce power equipment and civilian installation produce is distinguished and identification effectively, make supplier of electricity and power equipment resident around can determine the source of noise, avoid occurring dispute; On the other hand, can, according to the noise actual propagation characteristic of power equipment, arrange the noise-reducing device of power equipment, strengthen noise reduction.
A kind of power equipment noise detection apparatus that the utility model provides, at least comprises the noise processing circuit being connected with described Noise Acquisition circuit output end for detection of Noise Acquisition circuit and the input end of power equipment noise;
Described noise processing circuit is carried out Analysis of Noise Properties output noise signature waveform according to the noise signal of Noise Acquisition circuit output;
Further, described Noise Acquisition circuit comprise be arranged at power equipment the first Noise Acquisition circuit, be arranged at the second Noise Acquisition circuit around of power equipment and the range sensor for detection of the spacing of the first Noise Acquisition circuit and the second Noise Acquisition circuit;
Further, described noise processing circuit comprises the filtering circuit being connected with described Noise Acquisition circuit, the Power arithmetic circuit being connected with described filtering circuit output terminal, the power comparator circuit being connected with described Power arithmetic circuit output end and the central processing unit being connected compared with circuit output end with described power ratio;
Described filtering circuit comprises the first filtering circuit and the second filtering circuit;
Described Power arithmetic circuit comprises the first Power arithmetic circuit and the second Power arithmetic circuit, described the first Power arithmetic circuit is connected with described the first Noise Acquisition circuit by the first filtering circuit, for the signal power of the first Noise Acquisition circuit output is carried out computing and is outputed to power comparator circuit, described the second Power arithmetic circuit is connected with described the second Noise Acquisition circuit by the second filtering circuit, for the signal power of the second Noise Acquisition circuit output is carried out computing and outputed to power comparator circuit;
Described central processing unit is judged the second Noise Acquisition circuit acquisition noise source according to the comparative result of power comparator circuit;
Further, described noise processing circuit also comprises noise curve fitting circuit;
Described noise curve fitting circuit comprises the first noise curve fitting circuit and the second noise curve fitting circuit, described the first noise curve fitting circuit is connected with the output terminal of the first Power arithmetic circuit, for the noisy power signal of the first Power arithmetic circuit output is fitted to squiggle and exports to central processing unit; Described the second noise curve fitting circuit connects by the output terminal of the second Power arithmetic circuit, for the noisy power signal of the second Power arithmetic circuit output is fitted to squiggle and exports to central processing unit;
Further, described pick-up unit also comprises apart from testing circuit;
Describedly comprise range sensor and the distance operation circuit for detection of the spacing of the first Noise Acquisition circuit and the second Noise Acquisition circuit apart from testing circuit, described distance operation circuit input end is connected with described range sensor, and output terminal is connected with described central processing unit;
Further, described pick-up unit also comprises the display and the storer that are connected with described central processing unit.
The beneficial effects of the utility model: power equipment noise detection apparatus of the present utility model, the noise that the noise that can produce power equipment and civilian installation produce is distinguished and identification effectively, supplier of electricity and power equipment resident around can be had a clear understanding of the source of noise, avoid occurring dispute; On the other hand, can be well understood to the noise actual propagation characteristic of power equipment, be beneficial to the noise-reducing device of arranging power equipment according to noise actual propagation characteristic, strengthen noise reduction, and by the analysis of noise actual propagation characteristic, can further know whether the noise of the power equipment that defines resident place exceeds standard.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model; As shown in the figure, a kind of power equipment noise detection apparatus that the utility model provides, at least comprises the noise processing circuit being connected with described Noise Acquisition circuit output end for detection of Noise Acquisition circuit and the input end of power equipment noise; Described noise processing circuit is carried out Analysis of Noise Properties output noise signature waveform according to the noise signal of Noise Acquisition circuit output; Power equipment noise detection apparatus of the present utility model, the noise that the noise that can produce power equipment and civilian installation produce is distinguished and identification effectively, make supplier of electricity and power equipment resident around can determine the source of noise, avoid occurring dispute; On the other hand, can arrange according to noise actual propagation characteristic the noise-reducing device of power equipment, strengthen noise reduction, and by the analysis of noise actual propagation characteristic, can further know whether the noise of the power equipment that defines resident place exceeds standard.
In the present embodiment, described Noise Acquisition circuit comprises and is arranged at the first Noise Acquisition circuit of power equipment and is arranged at power equipment the second Noise Acquisition circuit around; Described the second Noise Acquisition circuit is packaged type and moves between power equipment and residential building, also the second Noise Acquisition circuit can be fixedly installed on to residential building place, in the time that noisiness is analyzed, the second noise equipment can be moved between power equipment and residential building, be convenient to gather multi-group data, noisiness is carried out to objective analysis; When differentiating noise source, the second Noise Acquisition circuit is arranged to residential building, described the first Noise Acquisition circuit and the second Noise Acquisition circuit can be realized by existing sonic transducer and support circuit thereof, do not repeat them here.
In the present embodiment, described noise processing circuit comprises the filtering circuit being connected with described Noise Acquisition circuit, the Power arithmetic circuit being connected with described filtering circuit output terminal, the power comparator circuit being connected with described Power arithmetic circuit output end and the central processing unit being connected compared with circuit output end with described power ratio;
Described filtering circuit comprises the first filtering circuit and the second filtering circuit;
Described Power arithmetic circuit comprises the first Power arithmetic circuit and the second Power arithmetic circuit, described the first Power arithmetic circuit is connected with described the first Noise Acquisition circuit by the first filtering circuit, for the signal power of the first Noise Acquisition circuit output is carried out computing and is outputed to power comparator circuit, described the second Power arithmetic circuit is connected with described the second Noise Acquisition circuit by the second filtering circuit, for the signal power of the second Noise Acquisition circuit output is carried out computing and outputed to power comparator circuit;
Described central processing unit is judged the second Noise Acquisition circuit acquisition noise source according to the comparative result of power comparator circuit, can obtain the noise source of resident present position;
Because noise can produce power attenuation in communication process, therefore, the noise power of the first Power arithmetic circuit output can think that noise maximal value is (because the first Noise Circuits is arranged at power equipment, propagation distance is very short, the power attenuation of noise can be ignored), in the time that residential building is arrived in noise transmission, the power of noise must reduce, the performance number of the second Power arithmetic circuit output should be less than the performance number of the first Power arithmetic circuit, in the time that the performance number of the second Power arithmetic circuit output is more than or equal to the performance number of the first Power arithmetic circuit, can judge the noise that residential building position must have civilian installation (referring to the equipment except power equipment herein) to produce, and the noise that civil equipment produces is much larger than the noise of power equipment, meanwhile, central processing unit output result of determination, in addition, central processing unit is provided with comparison prevalue, relatively prevalue is the performance number at resident's power equipment noise of calculating from theory according to noise transmission characteristic, in the time that the result of the second Power arithmetic circuit output is less than the result of the first Power arithmetic circuit output, the result of calculation of the second Power arithmetic circuit is directly inputted to central processing unit by power comparator circuit, and do not export comparative result, when ground noise power in residential building place is greater than comparison prevalue and while being less than maximal value, can judge that there are noise that other civilian installations produce and civilian noise in residential building place compared with little and power equipment noise is larger, when the current performance number that records noise is less than comparison prevalue, again in conjunction with the distance size of power equipment and residential building, can judge that the noise that noise is mainly derived from civilian installation and power equipment meets standard.
In the present embodiment, described noise processing circuit also comprises noise curve fitting circuit;
Described noise curve fitting circuit comprises the first noise curve fitting circuit and the second noise curve fitting circuit, described the first noise curve fitting circuit is connected with the output terminal of the first Power arithmetic circuit, for the noisy power signal of the first Power arithmetic circuit output is fitted to squiggle and exports to central processing unit; Described the second noise curve fitting circuit connects by the output terminal of the second Power arithmetic circuit, for the noisy power signal of the second Power arithmetic circuit output is fitted to squiggle and exports to central processing unit; By the effect of noise curve fitting circuit, can clearly present noise transmission characteristic and the attenuation characteristic in communication process, and by the effect apart from testing circuit, can will measure with the theoretical noise figure at power equipment different distance place, be beneficial to the judgement of noise source, and the design and the layout that are beneficial to noise reducing apparatus, improve noise reduction greatly.
In the present embodiment, described pick-up unit also comprises apart from testing circuit;
Describedly comprise range sensor and the distance operation circuit for detection of the spacing of the first Noise Acquisition circuit and the second Noise Acquisition circuit apart from testing circuit, described distance operation circuit input end is connected with described range sensor, output terminal is connected with described central processing unit, by apart from testing circuit, be beneficial to detection and the analysis of the actual propagation characteristic to power equipment noise, make analysis result accurately objective, and central processing unit is by the Wave data matching again of distance parameter and the output of the second noise curve fitting circuit, regenerate the second new noise waveform curve, be convenient to be analyzed with the first noise waveform curve, guarantee precision of analysis and objectivity.
In the present embodiment, described pick-up unit also comprises the display and the storer that are connected with described central processing unit, pass through display, can show the waveform of the parameter in testing process and noise, storer can be stored the each parameter in detecting, in order to follow-up work and examination.
Each circuit in above-mentioned all can adopt available circuit to realize, and the principles and structure of its each circuit does not repeat them here.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (5)
1. a power equipment noise detection apparatus, is characterized in that: at least comprise the noise processing circuit being connected with described Noise Acquisition circuit output end for detection of Noise Acquisition circuit and the input end of power equipment noise; Described noise processing circuit is carried out Analysis of Noise Properties output noise signature waveform according to the noise signal of Noise Acquisition circuit output;
Described noise processing circuit comprises the filtering circuit being connected with described Noise Acquisition circuit, the Power arithmetic circuit being connected with described filtering circuit output terminal, the power comparator circuit being connected with described Power arithmetic circuit output end and the central processing unit being connected compared with circuit output end with described power ratio;
Described filtering circuit comprises the first filtering circuit and the second filtering circuit;
Described Power arithmetic circuit comprises the first Power arithmetic circuit and the second Power arithmetic circuit, described the first Power arithmetic circuit is connected with the first Noise Acquisition circuit by the first filtering circuit, for the signal power of the first Noise Acquisition circuit output is carried out computing and is outputed to power comparator circuit, described the second Power arithmetic circuit is connected with the second Noise Acquisition circuit by the second filtering circuit, for the signal power of the second Noise Acquisition circuit output is carried out computing and outputed to power comparator circuit;
Described central processing unit is judged the second Noise Acquisition circuit acquisition noise source according to the comparative result of power comparator circuit.
2. power equipment noise detection apparatus according to claim 1, is characterized in that: described Noise Acquisition circuit comprises and is arranged at the first Noise Acquisition circuit of power equipment and is arranged at power equipment the second Noise Acquisition circuit around.
3. power equipment noise detection apparatus according to claim 2, is characterized in that: described noise processing circuit also comprises noise curve fitting circuit;
Described noise curve fitting circuit comprises the first noise curve fitting circuit and the second noise curve fitting circuit, described the first noise curve fitting circuit is connected with the output terminal of the first Power arithmetic circuit, for the noisy power signal of the first Power arithmetic circuit output is fitted to squiggle and exports to central processing unit; Described the second noise curve fitting circuit connects by the output terminal of the second Power arithmetic circuit, for the noisy power signal of the second Power arithmetic circuit output is fitted to squiggle and exports to central processing unit.
4. power equipment noise detection apparatus according to claim 3, is characterized in that: also comprise apart from testing circuit;
Describedly comprise range sensor and the distance operation circuit for detection of the spacing of the first Noise Acquisition circuit and the second Noise Acquisition circuit apart from testing circuit, described distance operation circuit input end is connected with described range sensor, and output terminal is connected with described central processing unit.
5. power equipment noise detection apparatus according to claim 4, is characterized in that: described pick-up unit also comprises the display and the storer that are connected with described central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649833.1U CN203672481U (en) | 2013-10-21 | 2013-10-21 | Electric equipment noise detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649833.1U CN203672481U (en) | 2013-10-21 | 2013-10-21 | Electric equipment noise detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203672481U true CN203672481U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320649833.1U Expired - Lifetime CN203672481U (en) | 2013-10-21 | 2013-10-21 | Electric equipment noise detection device |
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| Country | Link |
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| CN (1) | CN203672481U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635914A (en) * | 2016-02-26 | 2016-06-01 | 国家电网公司 | Active noise reduction device used for outdoor power transformation box |
| CN106289404A (en) * | 2016-08-27 | 2017-01-04 | 薛晓辉 | A kind of device saving Building Power Distribution facility power consumption |
| CN113012672A (en) * | 2020-12-31 | 2021-06-22 | 江苏南高智能装备创新中心有限公司 | Noise reduction control method and system for multiple noise sources and network side server |
-
2013
- 2013-10-21 CN CN201320649833.1U patent/CN203672481U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635914A (en) * | 2016-02-26 | 2016-06-01 | 国家电网公司 | Active noise reduction device used for outdoor power transformation box |
| CN106289404A (en) * | 2016-08-27 | 2017-01-04 | 薛晓辉 | A kind of device saving Building Power Distribution facility power consumption |
| CN106289404B (en) * | 2016-08-27 | 2019-02-26 | 薛晓辉 | A kind of device for saving Building Power Distribution facility power consumption |
| CN113012672A (en) * | 2020-12-31 | 2021-06-22 | 江苏南高智能装备创新中心有限公司 | Noise reduction control method and system for multiple noise sources and network side server |
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Granted publication date: 20140625 |
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| CX01 | Expiry of patent term |