CN110636210A - Wireless signal triggering method - Google Patents
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Abstract
The invention relates to a wireless signal triggering method which comprises the step of providing a wireless signal triggering system for carrying out targeted detection on the number of people in each area in a subway carriage to determine whether a people flowing request signal needs to be sent out or not so as to ensure the average of people in each area.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a wireless signal triggering method.
Background
Light, color, AM and FM broadcasts, and many electronic devices utilize the radio spectrum, and the frequencies of the radio spectrum available for communication are considered public property and are regulated by state-level agencies, such as the federal communications commission in the united states, Ofcom in the united kingdom, which define who can use which frequency band and for what purpose. Without similar controls or alternative arrangements, confusion may arise if the common frequency band is the same as the electromagnetic spectrum used by individuals, for example, aircraft do not have frequencies that are particularly useful on the flight control, and signals from amateur radio operators interfere with the flight control signals, making it impossible for pilots to land the aircraft properly. The frequency band of wireless communication is from 9kHz to 300 GHz.
Mobile phones should be one of the most widely known applications of wireless communication, with over 46 billion handsets around the world at 2018. The mobile phones allow users in different places to communicate with each other by telephone through radio waves. The user can use the mobile phone within the range of the mobile communication base station, and the base station will send and receive the signal of the mobile phone.
Disclosure of Invention
The invention at least needs to have the following two key inventions:
(1) the method comprises the steps of performing targeted detection on the number of people in each area in a subway carriage to determine whether a people flow request signal needs to be sent to ensure the average of people in each area, and more importantly, using the imaging characteristics of an image, adopting an uneven area segmentation mode for the image to ensure the validity of detection data;
(2) and performing definition analysis on the image subjected to the moving average interpolation processing, so that when the analysis result does not meet the requirement, a Sheberd interpolation processing link is added to improve the definition of the image.
According to an aspect of the present invention, there is provided a wireless signal triggering method, the method includes providing a wireless signal triggering system for performing a targeted detection on the number of people in each area in a subway car to determine whether a people flow request signal needs to be issued to ensure that people in each area are averaged, the wireless signal triggering system includes: the fisheye shooting equipment is arranged in a single-section subway carriage and is used for carrying out wide-view shooting on scenes in the carriage so as to obtain and output a wide-view acquisition image; the moving average interpolation device is connected with the fisheye shooting device and used for executing moving average interpolation processing on the received wide-field collected image so as to obtain and output a corresponding moving average interpolation image; the definition analysis equipment is connected with the moving average interpolation equipment and used for performing definition analysis on the received moving average interpolation image and sending a definition reliable instruction when the analyzed definition is greater than or equal to a preset definition threshold; the definition analyzing device is further used for sending out a definition unreliable instruction when the analyzed definition is smaller than the preset definition threshold; the Sheberd interpolation device is respectively connected with the moving average interpolation device and the definition analysis device and is used for executing Sheberd interpolation processing on the received moving average interpolation image when the definition unreliable instruction is received so as to obtain and output a corresponding re-interpolation image; the Sheberd interpolation device is further used for outputting the received moving average interpolation image as a re-interpolation image when the definition reliable instruction is received; and the DSP processing chip is respectively connected with the moving average interpolation device, the definition analysis device and the Sheberd interpolation device and is used for receiving the definition unreliable instruction or the definition reliable instruction.
The wireless signal triggering method is simple, effective, convenient and practical. The number of people in each area in the subway carriage is detected in a targeted mode to determine whether a people flow request signal needs to be sent out or not, so that the average number of people in each area in the carriage is guaranteed.
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Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a configuration diagram of a fisheye photographing apparatus of a wireless signal triggering system according to an embodiment of the invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
During the use of bluetooth technology, it has been found that bluetooth technology, despite its many advantages, still has a number of drawbacks. For the fields of industry, home automation control and industrial remote measurement and control, the Bluetooth technology is too complex, the power consumption is large, the distance is short, the networking scale is too small, and the like. Industrial automation is increasingly demanding for wireless data communication, and for industrial sites, such wireless transmissions must be highly reliable and resistant to electromagnetic interference from the industrial site. Therefore, ZIGBEE has been formally introduced in 2003 through long-term efforts. In addition, ZIGBEE uses the Home network-oriented communication protocol Home RF Lite that it previously studied.
At present, the rush hour of getting on or off duty in morning and evening, personnel's quantity in the subway carriage is more, because characteristics such as riding habit and carriage shape lead to near the door personnel too much and the less condition of other regional personnel very easily, like this, lead to personnel on the platform can't board the subway on the one hand, and on the other hand leads to the space in the carriage to be extravagant by serious.
In order to overcome the defects, the invention provides a wireless signal triggering method which comprises the step of providing a wireless signal triggering system for carrying out targeted detection on the number of people in each area in a subway carriage so as to determine whether a people flow request signal needs to be sent out or not to ensure the average of people in each area, wherein the wireless signal triggering system can effectively solve the corresponding technical problem.
Fig. 1 is a configuration diagram of a fisheye photographing apparatus of a wireless signal triggering system according to an embodiment of the invention.
The wireless signal triggering system shown according to the embodiment of the present invention includes:
the fisheye shooting equipment is arranged in a single-section subway carriage and is used for carrying out wide-view shooting on scenes in the carriage so as to obtain and output a wide-view acquisition image;
the moving average interpolation device is connected with the fisheye shooting device and used for executing moving average interpolation processing on the received wide-field collected image so as to obtain and output a corresponding moving average interpolation image;
the definition analysis equipment is connected with the moving average interpolation equipment and used for performing definition analysis on the received moving average interpolation image and sending a definition reliable instruction when the analyzed definition is greater than or equal to a preset definition threshold;
the definition analyzing device is further used for sending out a definition unreliable instruction when the analyzed definition is smaller than the preset definition threshold;
the Sheberd interpolation device is respectively connected with the moving average interpolation device and the definition analysis device and is used for executing Sheberd interpolation processing on the received moving average interpolation image when the definition unreliable instruction is received so as to obtain and output a corresponding re-interpolation image;
the Sheberd interpolation device is further used for outputting the received moving average interpolation image as a re-interpolation image when the definition reliable instruction is received;
a DSP processing chip which is respectively connected with the moving average interpolation device, the definition analysis device and the Sheberd interpolation device and is used for receiving the definition unreliable instruction or the definition reliable instruction;
the MMC storage equipment is connected with the definition analysis equipment and is used for pre-storing the preset definition threshold value;
the color level adjusting device is connected with the Sheberd interpolation device and used for receiving the re-interpolated image and executing color level adjusting processing on the re-interpolated image so as to obtain and output a corresponding real-time adjusting image;
the non-uniform segmentation equipment is connected with the color level adjustment equipment and is used for performing non-uniform segmentation on the real-time adjustment image based on the distance from the center of the real-time adjustment image to obtain and output each subarea pattern;
in the non-uniform segmentation apparatus, performing non-uniform segmentation on the real-time adjustment image based on a distance from a center of the real-time adjustment image to obtain and output each of the divisional area patterns includes: the farther the position is from the center of the real-time adjustment image, the smaller the area of the region segmented by the real-time adjustment image is;
the people number detection equipment is connected with the non-uniform segmentation equipment and is used for performing people number detection on each regional pattern to obtain the corresponding on-site people number;
the data analysis equipment is connected with the people number detection equipment and used for receiving each existing people number of each regional pattern, calculating the mean square error of each on-site people number, and sending a flow request signal when the mean square error exceeds the limit, or sending a distribution uniformity signal;
and the ZIGBEE communication equipment is connected with the data analysis equipment and used for wirelessly sending the flow request signal or the uniformly distributed signal to a ZIGBEE communication interface of a subway head control room.
Next, a specific configuration of the radio signal trigger system of the present invention will be further described.
In the wireless signal triggering system:
the tone scale adjusting device, the moving average interpolation device and the schneider interpolation device share the same quartz oscillator.
In the wireless signal triggering system:
and the DSP processing chip is also used for controlling the Sheberd interpolation equipment to enter a low power consumption mode when the definition reliable instruction is received.
In the wireless signal triggering system:
and the DSP processing chip is also used for controlling the Sheberd interpolation device to enter a high power consumption mode when the unreliable definition instruction is received.
The wireless signal triggering system may further include:
the area processing equipment is connected with the fisheye shooting equipment and used for receiving the wide-view collected image and performing area segmentation processing on the wide-view collected image based on the resolution of the wide-view collected image so as to obtain each image area;
and the contrast acquisition equipment is connected with the area processing equipment and is used for detecting the contrast of each image area.
The wireless signal triggering system may further include:
the parameter identification equipment is connected with the contrast acquisition equipment and used for receiving each contrast of each image area and calculating the mean square error of each contrast so as to obtain the drastic change grade of the contrast corresponding to the mean square error;
and the single-channel processing equipment is connected with the parameter identification equipment, is used for carrying out self-starting operation when the received violent change level exceeds the limit, and is also used for receiving the wide-field collected image from the regional processing equipment after the self-starting operation, and executing distortion correction processing on the M color channel value of the pixel point of the wide-field collected image in the CMYK color space to obtain a correction processing channel value.
The wireless signal triggering system may further include:
the channel combination equipment is connected with the single-channel processing equipment and is used for taking the correction processing channel value, the C color channel value, the Y color channel value and the K color channel value of each pixel point in the wide-field collected image as each updated color channel value in the CMYK color space of the pixel point so as to obtain a corresponding color updated image;
and the median filtering device is connected with the channel combination device and used for receiving the color updating image and executing median filtering processing of a median filtering window based on the noise amplitude value of the color updating image to obtain an updating processing image.
The wireless signal triggering system may further include:
the histogram equalization equipment is connected with the median filtering equipment and is used for executing histogram equalization processing on the updated processed image so as to obtain a corresponding equalization processed image;
and the geometric correction device is respectively connected with the moving average interpolation device and the histogram equalization device and is used for executing geometric correction on the equalization processing image so as to obtain a corresponding geometric correction image and replacing the wide-field acquisition image to send the geometric correction image to the moving average interpolation device.
In the wireless signal triggering system:
in the median filtering device, performing median filtering processing of a median filtering window based on a noise amplitude value thereof on the color update image to obtain an update-processed image includes: the larger the noise amplitude of the color updating image is, the larger the adopted median filtering window is;
wherein, in the region processing apparatus, performing region segmentation processing on the wide-field-of-view captured image based on the resolution of the wide-field-of-view captured image includes: the higher the resolution of the wide-field captured image is, the more the number of image regions obtained by performing region segmentation processing on the wide-field captured image is;
wherein the median filtering device, the histogram equalization device, and the geometry correction device share a same clock generation circuit.
In addition, the DSP chip adopts a Harvard structure with separated programs and data, is provided with a special hardware multiplier, widely adopts pipeline operation, provides special DSP instructions and can be used for quickly realizing various digital signal processing algorithms.
According to the requirements of digital signal processing, a DSP chip generally has some main features as follows: (1) one multiply and one add may be done in one instruction cycle. (2) The program and data spaces are separate and instructions and data may be accessed simultaneously. (3) On-chip with fast RAM, it is usually accessible in two blocks simultaneously via separate data buses. (4) Hardware support with low or no overhead loops and jumps. (5) Fast interrupt handling and hardware I/O support. (6) There are multiple hardware address generators operating in a single cycle. (7) Multiple operations may be performed in parallel. (8) And pipeline operation is supported, so that the operations of fetching, decoding, executing and the like can be executed in an overlapping way.
Classified according to the data format in which the DSP chip operates. DSP chips with data working in fixed-point format are called fixed-point DSP chips, such as TMS320C1X/C2X, TMS320C2XX/C5X, TMS320C54X/C62XX series of TI company, ADSP21XX series of AD company, DSP16/16A of AT & T company, MC56000 of Motolora company, and the like. The chips called floating point DSP, which operate in floating point format, such as TMS320C3X/C4X/C8X from TI, ADSP21XXX series from AD, DSP32/32C from AT & T, MC96002 from Motolora, etc.
The floating-point formats used by different floating-point DSP chips are not identical, some DSP chips use a custom floating-point format, such as TMS320C3X, and some DSP chips use a standard floating-point format of IEEE, such as MC96002 from Motorola, MB86232 from FUJITSU, and ZR35325 from ZORAN.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Although the present invention has been described with reference to the above embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims of the present application.
Claims (9)
1. A wireless signal triggering method, the method comprising providing a wireless signal triggering system for targeted detection of the number of people in each area within a subway car to determine whether a people flow request signal needs to be issued to ensure that people in each area are averaged, the wireless signal triggering system comprising:
the fisheye shooting equipment is arranged in a single-section subway carriage and is used for carrying out wide-view shooting on scenes in the carriage so as to obtain and output a wide-view acquisition image;
the moving average interpolation device is connected with the fisheye shooting device and used for executing moving average interpolation processing on the received wide-field collected image so as to obtain and output a corresponding moving average interpolation image;
the definition analysis equipment is connected with the moving average interpolation equipment and used for performing definition analysis on the received moving average interpolation image and sending a definition reliable instruction when the analyzed definition is greater than or equal to a preset definition threshold;
the definition analyzing device is further used for sending out a definition unreliable instruction when the analyzed definition is smaller than the preset definition threshold;
the Sheberd interpolation device is respectively connected with the moving average interpolation device and the definition analysis device and is used for executing Sheberd interpolation processing on the received moving average interpolation image when the definition unreliable instruction is received so as to obtain and output a corresponding re-interpolation image;
the Sheberd interpolation device is further configured to output the received moving average interpolated image as a re-interpolated image upon receiving the sharpness reliability instruction,
a DSP processing chip which is respectively connected with the moving average interpolation device, the definition analysis device and the Sheberd interpolation device and is used for receiving the definition unreliable instruction or the definition reliable instruction;
the MMC storage equipment is connected with the definition analysis equipment and is used for pre-storing the preset definition threshold value;
the color level adjusting device is connected with the Sheberd interpolation device and used for receiving the re-interpolated image and executing color level adjusting processing on the re-interpolated image so as to obtain and output a corresponding real-time adjusting image;
the non-uniform segmentation equipment is connected with the color level adjustment equipment and is used for performing non-uniform segmentation on the real-time adjustment image based on the distance from the center of the real-time adjustment image to obtain and output each subarea pattern;
in the non-uniform segmentation apparatus, performing non-uniform segmentation on the real-time adjustment image based on a distance from a center of the real-time adjustment image to obtain and output each of the divisional area patterns includes: the farther the position is from the center of the real-time adjustment image, the smaller the area of the region segmented by the real-time adjustment image is;
the people number detection equipment is connected with the non-uniform segmentation equipment and is used for performing people number detection on each regional pattern to obtain the corresponding on-site people number;
the data analysis equipment is connected with the people number detection equipment and used for receiving each existing people number of each regional pattern, calculating the mean square error of each on-site people number, and sending a flow request signal when the mean square error exceeds the limit, or sending a distribution uniformity signal;
and the ZIGBEE communication equipment is connected with the data analysis equipment and used for wirelessly sending the flow request signal or the uniformly distributed signal to a ZIGBEE communication interface of a subway head control room.
2. The method of claim 1, wherein:
the tone scale adjusting device, the moving average interpolation device and the schneider interpolation device share the same quartz oscillator.
3. The method of claim 2, wherein:
and the DSP processing chip is also used for controlling the Sheberd interpolation equipment to enter a low power consumption mode when the definition reliable instruction is received.
4. The method of claim 3, wherein:
and the DSP processing chip is also used for controlling the Sheberd interpolation device to enter a high power consumption mode when the unreliable definition instruction is received.
5. The method of claim 4, wherein the system further comprises:
the area processing equipment is connected with the fisheye shooting equipment and used for receiving the wide-view collected image and performing area segmentation processing on the wide-view collected image based on the resolution of the wide-view collected image so as to obtain each image area;
and the contrast acquisition equipment is connected with the area processing equipment and is used for detecting the contrast of each image area.
6. The method of claim 5, wherein the system further comprises:
the parameter identification equipment is connected with the contrast acquisition equipment and used for receiving each contrast of each image area and calculating the mean square error of each contrast so as to obtain the drastic change grade of the contrast corresponding to the mean square error;
and the single-channel processing equipment is connected with the parameter identification equipment, is used for carrying out self-starting operation when the received violent change level exceeds the limit, and is also used for receiving the wide-field collected image from the regional processing equipment after the self-starting operation, and executing distortion correction processing on the M color channel value of the pixel point of the wide-field collected image in the CMYK color space to obtain a correction processing channel value.
7. The method of claim 6, wherein the system further comprises:
the channel combination equipment is connected with the single-channel processing equipment and is used for taking the correction processing channel value, the C color channel value, the Y color channel value and the K color channel value of each pixel point in the wide-field collected image as each updated color channel value in the CMYK color space of the pixel point so as to obtain a corresponding color updated image;
and the median filtering device is connected with the channel combination device and used for receiving the color updating image and executing median filtering processing of a median filtering window based on the noise amplitude value of the color updating image to obtain an updating processing image.
8. The method of claim 7, wherein the system further comprises:
the histogram equalization equipment is connected with the median filtering equipment and is used for executing histogram equalization processing on the updated processed image so as to obtain a corresponding equalization processed image;
and the geometric correction device is respectively connected with the moving average interpolation device and the histogram equalization device and is used for executing geometric correction on the equalization processing image so as to obtain a corresponding geometric correction image and replacing the wide-field acquisition image to send the geometric correction image to the moving average interpolation device.
9. The method of claim 8, wherein:
in the median filtering device, performing median filtering processing of a median filtering window based on a noise amplitude value thereof on the color update image to obtain an update-processed image includes: the larger the noise amplitude of the color updating image is, the larger the adopted median filtering window is;
wherein, in the region processing apparatus, performing region segmentation processing on the wide-field-of-view captured image based on the resolution of the wide-field-of-view captured image includes: the higher the resolution of the wide-field captured image is, the more the number of image regions obtained by performing region segmentation processing on the wide-field captured image is;
wherein the median filtering device, the histogram equalization device, and the geometry correction device share a same clock generation circuit.
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