CN203310512U - Noise detection device of electric power apparatus - Google Patents

Abstract

The utility model discloses a noise detection device for power equipment, which comprises a waveform memory, a noise collector, an ARM waveform filter, a noise processor for power equipment, a power supply and a display; Characteristic noise waveform, the waveform memory is connected with the ARM waveform filter; the noise collector collects the noise waveform around the detected power equipment, the noise collector is connected with the ARM waveform filter, and the ARM waveform filter is connected with the power The equipment noise processor is connected, and the power equipment noise processor determines the amplitude and frequency of the characteristic noise waveform, and displays the amplitude and frequency on the display; the power supply is connected with the noise collector, ARM waveform filter, The power equipment noise processor and display are connected and powered. The detection device is easy to use and has accurate detection results.

Description

Power equipment noise detection device

technical field

The utility model relates to the field of power system detection, in particular to a power equipment noise detection device.

Background technique

The facilities that generate noise in substations include transformers, reactors, cooling and exhaust devices, etc., especially the primary equipment of transformers and reactors has low noise frequency and large amplitude, which may have a serious impact on surrounding residents. As the load of power equipment changes, the noise intensity and frequency will also change significantly. Therefore, the current technology uses a certain time period to detect the noise of power equipment, which cannot accurately reflect the noise intensity of substations. Especially during the day and night, the noise of electrical equipment is significantly different. Moreover, the noise detection device at this stage can only detect comprehensive noise, and it is difficult to distinguish and identify the noise generated by civil facilities around the power equipment. After the noise reduction device is installed on the power equipment, the effect is good during the day, but at night, the surrounding residents still complain The noise is loud, and it is impossible to tell whether the noise is from electrical equipment. However, the special noise detection device for electric power equipment of the utility model filters out other interference noises by detecting special frequencies, can effectively detect the noise level of electric power equipment in real time, and filters out other surrounding noise interferences. Within a certain distance range, it can Effectively judge whether the noise intensity of electrical equipment is too large or the intensity emitted by surrounding facilities is too large.

Contents of the invention

In view of the deficiencies in the prior art above, the purpose of this utility model is to provide a noise detection device for power equipment that is easy to use and has accurate detection results. To achieve the above purpose, the technical solution of the utility model is: a noise detection device for power equipment Devices, including waveform memory, noise collector, ARM waveform filter, power equipment noise processor, power supply and display;

Wherein the waveform memory stores the characteristic noise waveform of the detected power equipment in the full period of time, and the waveform memory is connected with the ARM waveform filter;

The noise collector collects noise waveforms around the detected power equipment, the noise collector is connected with an ARM waveform filter, and the ARM waveform filter obtains the characteristic noise waveform of the power equipment through filtering, and the ARM waveform filter and the noise of the power equipment The processors are connected, and the power equipment noise processor determines the amplitude and frequency of the characteristic noise waveform of the power equipment, and displays the characteristic noise waveform of the power equipment on the display;

The power supply is respectively connected with the noise collector, the ARM waveform filter, the power equipment noise processor and the display and supplies power.

Advantage of the utility model and beneficial effect are as follows:

The utility model collects the noise detection device of the special frequency of the electric equipment. Through the detection of the special frequency, other interference noises are filtered out, and the noise of the electric equipment can be detected effectively in real time, without being interfered by other surrounding noises. Effectively judge whether the noise intensity of electrical equipment is too large or the intensity emitted by surrounding facilities is too large .

Description of drawings

Fig. 1 is a schematic structural diagram of a power equipment noise detection device according to an embodiment of the present invention.

Detailed ways

Provide a non-limiting embodiment below in conjunction with accompanying drawing and further elaborate the utility model.

Referring to Fig. 1, a power equipment noise detection device includes a waveform memory 1, a noise collector 2, an ARM waveform filter 3, a power equipment noise processor 4, a power supply 5 and a display 6;

Wherein the wave memory 1 stores the power equipment characteristic noise waveform of the detected power equipment in the whole period, and the wave memory 1 is connected with the ARM wave filter 3; the wave memory is a RAM type

Described noise collector 2 collects the noise waveform around the detected power equipment, and the noise collector adopts a commercially available product, and the noise collector 2 is connected with the ARM waveform filter 3, and the ARM waveform filter 3 obtains the noise waveform of the power equipment by filtering. The characteristic noise waveform, the ARM waveform filter 3 is connected with the power equipment noise processor 4, the power equipment noise processor 4 determines the amplitude and frequency of the power equipment characteristic noise waveform, and displays the power equipment characteristic noise waveform on the display 6 on;

The power supply 5 is respectively connected with the noise collector 2, the ARM waveform filter 3, the power equipment noise processor 4 and the display 6 to supply power.

Waveform memory 1: Save the full-time characteristic waveform of the noise of the equipment being collected, and provide the characteristic waveform required for filtering in the filtering operation.

Noise Collector 2: Used to collect surrounding noise waveforms. It can be installed at a certain distance from the sound source near the residential area, and can more effectively detect the noise level felt by the surrounding residents.

ARM waveform filter 3: In the stage of collecting characteristic waves, the characteristic waveforms can be stored in the waveform memory 1. In the stage of detecting noise, the waveforms collected by the noise collection device are processed, and the noise waveform feature library is extracted according to different time points throughout the day. Compare and analyze the corresponding waveforms inside, adopt digital signal processing technology, set up a filter circuit to filter the noise waveform, filter out other interference waves, and output the collected characteristic waveform;

Power equipment noise processor 4: detects and calculates the characteristic waveform output by the ARM waveform filter 3, and obtains the amplitude and frequency of the noise waveform of the detected device.

Display: used to display the amplitude and frequency of the noise waveform of the tested device.

This device first collects the full-time characteristic frequencies of their respective noises around the power equipment, and saves them in the waveform feature library of power equipment. Complete digital filtering, filter out interference noise, and then detect the current power equipment noise. The power equipment noise detection device enables the power department to accurately grasp the effect of noise reduction measures, and better handle complaints from residents around the power facilities.

The above embodiments should be understood as only for illustrating the utility model but not for limiting the protection scope of the utility model. After reading the content of the utility model, the skilled person can make various changes or modifications to the utility model, and these equivalent changes and modifications also fall within the scope defined by the claims of the utility model. the

Claims (1)

1. A power equipment noise detection device, characterized in that: comprising a waveform memory (1), a noise collector (2), an ARM waveform filter (3), a power equipment noise processor (4), a power supply (5) and display (6); Wherein the waveform memory (1) stores the power equipment characteristic noise waveform of the detected power equipment in the whole period, and the waveform memory (1) is connected with the ARM waveform filter (3); The noise collector (2) collects noise waveforms around the detected power equipment, the noise collector (2) is connected with the ARM waveform filter (3), and the ARM waveform filter (3) obtains the characteristics of the power equipment through filtering Noise waveform, the ARM waveform filter (3) is connected with the power equipment noise processor (4), and the power equipment noise processor (4) determines the amplitude and frequency of the power equipment characteristic noise waveform, and the power equipment characteristic The noise waveform is displayed on the display (6); The power supply (5) is respectively connected with the noise collector (2), the ARM waveform filter (3), the power equipment noise processor (4) and the display (6) and supplies power.

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