CN110662011B - State switching device and method based on electronic signal - Google Patents

Abstract

The invention relates to a state switching device and method based on electronic signals. The device comprises: a rain gauge, including a rain gauge, a pump, a cylinder top closure and a DC motor. The diameter of the rain gauge is a preset length; A cylinder-top closure is located on top of the rain gauge; a signal analysis device for performing raindrop object detection on the received filtered and sharpened image based on the reference raindrop geometry, when the number of detected raindrop objects exceeds a preset number threshold When the number of raindrop objects detected does not exceed the preset number threshold, a second trigger instruction is issued. The electronic signal-based state switching device and method of the present invention are convenient to operate and run smoothly. On the basis of customized image processing, it is determined whether it is necessary to start the rain recording based on the detected number of raindrops in the field, so as to avoid the rain recorder being in the recording state for a long time.

Description

State switching device and method based on electronic signal

technical field

The present invention relates to the field of computers, and in particular, to an electronic signal-based state switching device and method.

Background technique

Electronic signals can be divided into two categories: analog signals and digital signals, which are carriers for transmitting, processing and storing external information through electronic methods. Electronic signals are transmitted by electrons or holes in conductive media, and are transmitted by electromagnetic waves (infrared is also electromagnetic waves) in space.

The analog signal uses the combination of voltage amplitude and frequency to express information, such as the information of vertical synchronization, frame synchronization and color in the analog signal that controls the picture tube in the display through the voltage magnitude and different frequencies. The digital signal is very simple. It consists of two states: "0" and "1": higher than a certain voltage value is considered to be "1", and lower than a certain voltage value is "0", which is the basis of computer information processing , the foundation of digitization.

Through digital-to-analog conversion, digital signals and analog signals can be converted into each other. For example, a repeater can obtain sound information from the outside world, convert it into an analog signal through a microphone, and convert it into digital information after entering the voice chip. The stored digital information is read, converted into an analog signal after DA conversion, and output to the speaker after amplification, we can hear the sound, and by controlling the flow of the digital signal to achieve fast and slow playback and repeat operations of the voice .

SUMMARY OF THE INVENTION

The present invention needs to have at least the following two key invention points:

(1) On the basis of customized image processing, it is determined whether it is necessary to start the rainfall recording based on the detected number of raindrops in the field, so as to avoid the rainfall recorder being in the recording state for a long time;

(2) In the case of obtaining a reference white balance value for image processing, white balance processing is performed only on image macroblocks in which the object area exceeds the limit, thereby achieving a balance between image processing effect and image processing efficiency.

According to an aspect of the present invention, a state switching device based on an electronic signal is provided, the device comprising:

The rain gauge includes a rain gauge, a water pump, a top closure and a DC motor, the diameter of the rain gauge is a preset length, and the top seal is located on the top of the rain gauge;

A button camera device, set near the rain recorder, is used to perform a camera action on the environment where the rain recorder is located, so as to obtain and output the corresponding current captured image;

an FPM DRAM storage device for pre-storing a block size table, where the block size table stores macroblock sizes corresponding to each image resolution with different image resolutions as indexes;

a table look-up block device, respectively connected to the button camera device and the FPM DRAM storage device, for searching out the corresponding macroblock size from the block size table based on the received resolution of the current captured image, and segmenting the current captured image based on the macroblock size to obtain each image macroblock;

A data adjustment device, connected to the table look-up and block device, is used to receive each image macroblock of the currently captured image, obtain each white balance value of each image macroblock, and perform mean calculation on each white balance value to obtain outputting a corresponding reference white balance value, and performing the following actions for each image macroblock whose object area in the current captured image exceeds a preset area threshold: performing white balance on the image macroblock based on the reference white balance value Compensation processing to obtain processed image macroblocks;

An instant processing device, connected to the data adjustment device, for image integration of each processed image macroblock in the currently captured image and each image macroblock whose object area does not exceed a preset area threshold in the currently captured image To obtain a real-time processed image corresponding to the currently captured image, the image macroblocks in which the object area exceeds the preset area threshold in the current captured image are the image macroblocks in which the number of pixels occupied by the object exceeds the number of pixels corresponding to the preset area threshold. The number of pixels in the image macroblock.

According to another aspect of the present invention, there is also provided a state switching method based on an electronic signal, the method comprising using the electronic signal-based state switching device as described above to, on the basis of customized image processing, The number of detections determines whether it is necessary to initiate a rain recording.

The electronic signal-based state switching device and method of the present invention are convenient to operate and run smoothly. On the basis of customized image processing, it is determined whether it is necessary to start the rain recording based on the detected number of raindrops in the field, so as to avoid the rain recorder being in the recording state for a long time.

Description of drawings

Embodiments of the present invention will be described below with reference to the accompanying drawings, wherein:

FIG. 1 is an outline structure diagram of a button camera device of a state switching device based on an electronic signal according to an embodiment of the present invention.

Detailed ways

The embodiments of the electronic signal-based state switching device and method of the present invention will be described in detail below with reference to the accompanying drawings.

From a meteorological point of view, rainfall usually refers to the amount of water vapor condensed in the air falling to the ground, dew, frost, hail, snow, etc., and condensation is not included.

The so-called rainfall is the depth of rainwater falling to the horizontal surface (without leakage, evaporation, loss, etc.) within a certain period of time. Measured with a rain gauge. in millimeters. The meteorological station measures it every 6 hours in the presence of precipitation. The average annual precipitation of a place over the years is called the "average annual precipitation" of the place.

At present, the structure of the rain recorder is relatively simple, consisting only of a rain gauge and a measuring cup. After each rainfall measurement, professional staff are required to use the measuring cup for on-site measurement. At the same time, the current rain recorder is always in working condition. In practice, however, rain recording is not necessary in most weather.

In order to overcome the above deficiencies, the present invention builds a state switching device and method based on an electronic signal, which can effectively solve the corresponding technical problems.

The electronic signal-based state switching device shown according to the embodiment of the present invention includes:

The rain gauge includes a rain gauge, a water pump, a top closure and a DC motor, the diameter of the rain gauge is a preset length, and the top seal is located on the top of the rain gauge;

The button camera device, as shown in Figure 1, is arranged near the rain recorder, and is used to perform a camera action on the environment where the rain recorder is located, so as to obtain and output the corresponding current captured image;

Wherein, the button camera device includes a button camera body 1, a camera lens 2 and a connection cable 3;

an FPM DRAM storage device for pre-storing a block size table, where the block size table stores macroblock sizes corresponding to each image resolution with different image resolutions as indexes;

a table look-up block device, respectively connected to the button camera device and the FPM DRAM storage device, for searching out the corresponding macroblock size from the block size table based on the received resolution of the current captured image, and segmenting the current captured image based on the macroblock size to obtain each image macroblock;

A data adjustment device, connected to the table look-up and block device, is used to receive each image macroblock of the currently captured image, obtain each white balance value of each image macroblock, and perform mean calculation on each white balance value to obtain outputting a corresponding reference white balance value, and performing the following actions for each image macroblock whose object area in the current captured image exceeds a preset area threshold: performing white balance on the image macroblock based on the reference white balance value Compensation processing to obtain processed image macroblocks;

An instant processing device, connected to the data adjustment device, for image integration of each processed image macroblock in the currently captured image and each image macroblock whose object area does not exceed a preset area threshold in the currently captured image To obtain a real-time processed image corresponding to the currently captured image, the image macroblocks in which the object area exceeds the preset area threshold in the current captured image are the image macroblocks in which the number of pixels occupied by the object exceeds the number of pixels corresponding to the preset area threshold. Image macroblocks with the number of pixels;

A bicubic interpolation device, connected to the real-time processing device, is used for receiving the real-time processing image, and performing bicubic interpolation processing based on a 4×4 pixel neighborhood on the real-time processing image, so as to obtain and output the corresponding interpolation processing image ;

a high-pass filter sharpening device, connected to the bicubic interpolation device, for performing high-pass filter sharpening processing on the interpolated image to obtain a corresponding filtered and sharpened image;

The signal parsing device is connected to the high-pass filtering and sharpening device, and is used for performing raindrop object detection on the received filtered and sharpened image based on the reference raindrop geometric shape, and when the number of detected raindrop objects exceeds a preset number threshold, Issue a first trigger instruction, and issue a second trigger instruction when the number of detected raindrop objects does not exceed the preset number threshold;

Wherein, the pumping pump is used to drain the rainwater in the rain gauge cylinder after the rain recorder completes one recording, and the DC motor is connected to the cylinder top closure;

Wherein, when the DC motor receives the first trigger instruction, it drives the cylinder top closure to leave the top of the rain gauge cylinder to enable the rain recorder of the rain recorder.

Next, the specific structure of the electronic signal-based state switching device of the present invention will be further described.

In the electronic signal-based state switching device:

When receiving the second trigger command, the DC motor drives the cylinder-top closure to close the top of the rain gauge to end the rain recording by the rain recorder.

In the electronic signal-based state switching device:

The preset length is 20 cm to 40 cm, and the shape of the top closure is matched with the shape of the top opening of the rain gauge.

The electronic signal-based state switching device may also include:

The MMC memory card is connected to the scale extraction device and the nonlinear interpolation device respectively, and is used for storing the preset scale threshold;

A gradation adjustment device, connected to the signal analysis device and the nonlinear interpolation device, respectively, for receiving the nonlinear interpolation image, and performing gradation adjustment processing on the nonlinear interpolation image to obtain corresponding instant adjustment image, and replace the filtered and sharpened image with the real-time adjustment image and send it to the signal analysis device;

Wherein, the scale extraction device includes an image receiving component, a contrast calculation component, a scale acquisition component and a scale output component;

Wherein, in the ratio extraction device, the contrast computing component is connected to the image receiving component, and is used to obtain the contrast of the wavelet filtered image as the first contrast, and is also used to obtain the multivariate regression interpolation image. Contrast as the second contrast;

Wherein, in the ratio extraction device, the image receiving component is configured to receive the wavelet filtered image and the multiple regression interpolation image.

At the same time, in order to overcome the above shortcomings, the present invention also builds a state switching method based on electronic signals, the method includes using the electronic signal-based state switching device as described above, on the basis of customized image processing, based on field raindrops The number of detections to determine whether it is necessary to initiate rain logging.

In addition, the term wavelet (Wavelet), as the name suggests, "wavelet" is a small waveform. The so-called "small" means that it has attenuation; and the "wave" refers to its volatility, and its amplitude is positive and negative. Compared with the Fourier transform, the wavelet transform is a localized analysis of the time (space) frequency. It gradually refines the signal (function) at multiple scales through scaling and translation operations, and finally achieves time subdivision at high frequencies and frequency subdivision at low frequencies. It can automatically adapt to the requirements of time-frequency signal analysis, so that it can focus on any details of the signal, solve the difficult problem of Fourier transform, and become a major breakthrough in scientific methods since Fourier transform. Some people call wavelet transform "mathematical microscope".

The application of wavelet analysis is closely combined with the theoretical research of wavelet analysis. He has made remarkable achievements in the field of science and technology information industry. Electronic information technology is an important field in the six high-tech, and its important aspects are image and signal processing. Today, signal processing has become an important part of contemporary scientific and technological work. The purpose of signal processing is: accurate analysis, diagnosis, coding compression and quantization, fast transmission or storage, and accurate reconstruction (or recovery). From a mathematical point of view, signal and image processing can be unified as signal processing (images can be regarded as two-dimensional signals), and many applications of wavelet analysis can be attributed to signal processing problems. For signals whose properties are stable over time, the ideal tool for processing remains Fourier analysis. However, most of the signals in practical applications are unstable, and a tool that is particularly suitable for unstable signals is wavelet analysis.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: read-only memory (English: Read-Only Memory, referred to as: ROM), random access memory (English: Random Access Memory, referred to as: RAM), magnetic disk or Various media that can store program codes, such as optical discs.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (3)

1. A state switching device based on an electronic signal, wherein the device comprises: The rain gauge includes a rain gauge, a water pump, a top closure and a DC motor, the diameter of the rain gauge is a preset length, and the top seal is located on the top of the rain gauge; A button camera device, set near the rain recorder, is used to perform a camera action on the environment where the rain recorder is located, so as to obtain and output the corresponding current captured image; an FPM DRAM storage device for pre-storing a block size table, where the block size table stores macroblock sizes corresponding to each image resolution with different image resolutions as indexes; a table look-up block device, respectively connected to the button camera device and the FPM DRAM storage device, for searching out the corresponding macroblock size from the block size table based on the received resolution of the current captured image, and segmenting the current captured image based on the macroblock size to obtain each image macroblock; A data adjustment device, connected to the table look-up and block device, is used to receive each image macroblock of the currently captured image, obtain each white balance value of each image macroblock, and perform mean calculation on each white balance value to obtain outputting a corresponding reference white balance value, and performing the following actions on each image macroblock whose foreground area in the currently captured image exceeds a preset area threshold: performing white balance on the image macroblock based on the reference white balance value Compensation processing to obtain processed image macroblocks; An instant processing device, connected to the data adjustment device, for performing image integration on each processed image macroblock in the currently captured image and each image macroblock whose foreground area does not exceed a preset area threshold in the currently captured image To obtain a real-time processed image corresponding to the currently captured image, the image macroblocks whose foreground area exceeds a preset area threshold in the currently captured image are image macroblocks in which the number of pixels occupied by the foreground exceeds the number of pixels corresponding to the preset area threshold. Image macroblocks with the number of pixels; A bicubic interpolation device, connected to the real-time processing device, is used for receiving the real-time processing image, and performing bicubic interpolation processing based on a 4×4 pixel neighborhood on the real-time processing image, so as to obtain and output the corresponding interpolation processing image ; a high-pass filter sharpening device, connected to the bicubic interpolation device, for performing high-pass filter sharpening processing on the interpolated image to obtain a corresponding filtered and sharpened image; The signal parsing device is connected to the high-pass filtering and sharpening device, and is used for performing raindrop object detection on the received filtered and sharpened image based on the reference raindrop geometric shape, and when the number of detected raindrop objects exceeds a preset number threshold, Issue a first trigger instruction, and issue a second trigger instruction when the number of detected raindrop objects does not exceed the preset number threshold; Wherein, the pumping pump is used to drain the rainwater in the rain gauge cylinder after the rain recorder completes one recording, and the DC motor is connected to the cylinder top closure; Wherein, when the DC motor receives the first trigger instruction, it drives the cylinder top closure to leave the top of the rain gauge to enable the rain recorder of the rain recorder; When receiving the second trigger command, the DC motor drives the cylinder-top closure to close the top of the rain gauge to end the rain recording by the rain recorder. 2. The state switching device based on electronic signal as claimed in claim 1, is characterized in that: The preset length is 20 cm to 40 cm, and the shape of the top closure is matched with the shape of the top opening of the rain gauge. 3. a state switching method based on an electronic signal, the method is applied on the state switching device based on an electronic signal as described in any one of claims 1-2, thereby determining whether it is necessary to start the rainfall based on the detection quantity of the on-site raindrops Record.

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