WO2017133240A1

WO2017133240A1 - Intelligent intersection control cabinet

Info

Publication number: WO2017133240A1
Application number: PCT/CN2016/097907
Authority: WO
Inventors: 李建尧
Original assignee: 李建尧
Priority date: 2016-02-04
Filing date: 2016-09-02
Publication date: 2017-08-10
Also published as: CN105513364A; CN105513364B; CN107710296A; CN107710296B

Abstract

An intelligent control cabinet located at an intersection comprises a cabinet (1), a control cabinet communication apparatus (2), a timer (3), a CCD image sensor (4), and a Freescale IMX6 processor (5). The control cabinet communication apparatus (2), the timer (3), the CCD image sensor (4), and the Freescale IMX6 processor (5) are all disposed at the cabinet (1). The timer (3), the CCD image sensor (4), and the Freescale IMX6 processor (5) are configured to determine a number of pedestrians. The control cabinet communication apparatus (2) is configured to determine a street sweeper allocation strategy for an intersection on the basis of the number of pedestrians.

Description

Intelligent control box at traffic intersection

Technical field

The invention relates to the field of control boxes, in particular to an intelligent control box located at a traffic intersection.

Background technique

There are three main types of environmental impacts on human health: (1) Biogeochemical diseases caused by the environment are health effects caused by excessive or lack of certain trace elements in water and soil. It is now clear that there are more than 10 kinds of elements such as cobalt, copper, nickel, boron, lead, fluorine, iodine, arsenic and zinc, among which iodine and fluorine are the most widely distributed, causing endemic fluorosis and localities. Sexual goiter. 2 Acute and chronic damage caused by environmental pollution to the human body. Some form public nuisance diseases, some cause acute poisoning and death to people in the polluted areas, and some have a chronic effect on the health of the population, leading to increased sensitivity of the population to certain diseases, causing some common diseases and frequently-occurring diseases among residents. Rate and mortality increased. 3 The long-term harm caused by environmental pollution to human health. It mainly includes carcinogenesis, mutagenicity and teratogenicity.

In order to avoid the impact of environmental degradation on urban residents, each city has a sanitation department to systematically manage the city's environmental sanitation. The department responsible for urban sanitation management is the urban sanitation department, which consists of sanitation sites distributed in various locations. The number of dispatched labors at various locations in the prior art is difficult to control, and it is easy to have too many or too few dispatched labors.

Therefore, there is a need for a new intelligent distribution scheme for sanitation personnel, which can utilize existing control boxes at each traffic intersection to add data acquisition functions and data communication functions to real-time collection of the number of people at traffic intersections. And based on the number of people flow to determine the number of cleaners sent to the sanitation service site near the intersection of the traffic intersection, thereby achieving adaptive control of the number of cleaners at nearby sanitation service stations.

Summary of the invention

In order to solve the above problems, the present invention provides an intelligent control box located at a traffic intersection, taking the existing control box of the traffic intersection as a control platform, avoiding wasting the original limited public resources of the city, and integrating high precision in the control box. The image recognition device and the wireless communication device achieve adaptation to the dispatching labor of the nearby sanitation service site by the number of people based on the traffic intersection.

According to an aspect of the present invention, an intelligent control box is provided at a traffic intersection, the control box including a cabinet, a control box communication device, a timer, a CCD image sensor, and a Freescale IMX6 processor, and a control box communication Equipment, timers, CCD image sensors and Freescale IMX6 processors are located on the cabinet. Timers, CCD image sensors and Freescale IMX6 processors are used to determine the number of pedestrians at traffic intersections. The number of pedestrians determines the cleaner distribution strategy at the intersection.

More specifically, in the intelligent control box located at the traffic intersection, the control box main body includes a box body and a hanging structure; the box body adopts a cold-rolled steel plate with a thickness of 1.5 mm and has a stiffened plate and a rib plate. The suspended structure includes suspension mounting support, suspension channel, spacer, gasket and lag screw. The suspension mounting support is a grooved steel structure, which is buckled on the top wall of the box. The spacer is located on the suspension mounting support and the box. Between the top walls, the suspension channel is a vertical U-shaped steel structure, located above the suspension mounting support, consisting of upper steel bars, lower steel bars and longitudinal steel bars. The lag screws are used to connect the suspension mounting supports and the suspension channel steel. Lower steel strip, gasket between the suspension mounting bracket and the lower steel strip of the suspended channel, suspension channel The upper steel bar is fixed on the suspension platform to realize the hanging installation of the box body; the timer is arranged in the box body for outputting the time period of the current time and outputting as a real-time time period, and the real-time time period is 24 days per day. One of the time periods; the CCD image sensor is disposed on the outer surface of the box for photographing the traffic intersection to obtain the intersection image; the TF memory card is disposed in the box for pre-storing the intersection image of 24 reference time segments Each of the reference time period intersection images corresponds to a time period, and each of the reference time period intersection images is an image obtained by the CCD image sensor pre-shooting at the traffic intersection without any pedestrian state in the corresponding time period, and the TF memory card is further The utility model is configured to pre-store a traffic intersection address, a first binarization threshold, a second binarization threshold, an aspect ratio range, and a symmetry range, and the aspect ratio range is a range of statistics after calculating the aspect ratio of the plurality of reference pedestrian images, and is symmetric The range is the range of statistics after calculating the symmetry of multiple reference pedestrian images; the background selection device is set in the box. Connected to the timer and the TF memory card respectively, and search for the corresponding reference time period intersection image in the TF memory card based on the real-time time period output by the current time timer and output as the target background image; the image segmentation device is disposed in the box And respectively connected with the CCD image sensor, the TF memory card and the background selection device, and receive the high-definition intersection image of the current moment and the high-definition intersection image of the next moment of the current moment through the CCD image sensor, respectively as the first high-definition intersection image and the second high-definition intersection The image, the gray value of each pixel of the first high-resolution intersection image is subtracted from the gray value of the corresponding position in the second high-resolution intersection image and the absolute value is taken to obtain the first absolute value, and the image of the first high-definition intersection is The gray value of each pixel is subtracted from the gray value of the pixel corresponding to the position in the target background image and takes an absolute value to obtain a second absolute value, when the first absolute value is greater than or equal to the first binarization threshold and the second absolute value When the second binarization threshold is greater than or equal to the second binarization threshold, the corresponding pixel of the first HD intersection image is determined as the motion pixel, otherwise, the first high The corresponding pixel of the image of the clear intersection is determined as a still pixel, and an image composed of all the moving pixels in the first high-resolution intersection image is output as a moving image, and the moving image is composed of one or more motion regions; the image morphology processing device is set in the box The body is connected to the image segmentation device for receiving the moving image, and denoising each motion region to obtain a denoising sub-image, filling the internal cavity of the denoising sub-image and connecting the breakpoint in the de-noising sub-image to obtain Shaping the sub-image, outputting one or more shaped sub-images; the feature extraction device is disposed in the box and connected with the image morphology processing device to extract the horizontal maximum pixel number and the vertical maximum pixel number of each of the shaped sub-images, and the vertical maximum The number of pixels is divided by the horizontal maximum number of pixels to obtain the aspect ratio, and the symmetry of each shaped sub-image is calculated; the Freescale IMX6 processor is placed in the box and connected to the feature extraction device and the TF memory card, respectively. The aspect ratio and symmetry of the shaped sub-image and the aspect ratio and symmetry range, respectively In the row comparison, when the aspect ratio of the shaped sub-image falls within the aspect ratio range and the symmetry falls within the symmetry range, the corresponding shaped sub-image is determined as the pedestrian sub-image, and the number of the pedestrian sub-images is calculated and output as the number of pedestrians. Control box communication equipment, connected with Freescale IMX6 processor and TF memory card, receiving the number of pedestrians and traffic intersection address, determining the cleaning index of the traffic intersection address based on the number of pedestrians, and further determining the dispatch traffic based on the cleaning index of the traffic intersection address The number of cleaners at the intersection address, and the number of cleaners determined based on the traffic intersection address is sent to the sanitation service station near the traffic intersection address via the wireless communication link. The more pedestrians, the smaller the cleaning index of the traffic intersection address, and the smaller the dispatching traffic The number of cleaners at the intersection address is greater.

More specifically, in the intelligent control box located at the traffic intersection: the control box communication device includes a microcontroller and a GPRS communication interface.

More specifically, in the intelligent control box located at the traffic intersection: the wireless communication link is a GPRS two-way communication link.

More specifically, in the intelligent control box located at the traffic intersection: the TF memory card is replaced with the built-in memory of the Freescale IMX6 processor.

More specifically, in the intelligent control box located at the traffic intersection: the control box communication device is disposed on the outer side surface of the box.

DRAWINGS

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

1 is a block diagram showing the structure of an intelligent control box located at a traffic intersection according to an embodiment of the present invention.

LIST OF REFERENCE NUMERALS 1 box; 2 control box communication device; 3 timer; 4CCD image sensor; 5 Freescale IMX6 processor

detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an intelligent control box at a traffic intersection of the present invention will be described in detail with reference to the accompanying drawings.

The term environmental is very broad. From a medical point of view, the environment refers to material factors and material conditions other than the human body. It includes the natural environment on which humans depend, such as the atmosphere, hydrosphere, soil circle, lithosphere and biosphere; it also includes the social environment in which human beings live.

Environmental factors affecting human health can be divided into three categories: physical factors (such as noise, vibration, radioactive materials, radio frequency radiation, etc.); chemical factors (such as toxic chemicals, heavy metals, pesticides, etc.) and biological factors ( Such as bacteria, viruses, parasites, etc.). They can harm human health through various means, into the air, water, soil and living environment, among which chemical factors are the most important.

Each city has a dedicated sanitation department responsible for the sanitation of the urban space environment. It is generally characterized by the deployment of a preset number of sanitation workers in each city location for the cleaning and tidying of the city. Among them, due to the large number of vehicles and pedestrians, The various traffic intersections are the focus of the sanitation department and the labor force is the most. However, the current problem is that the sanitation department is uncertain about the number of specific sanitation workers dispatched to various traffic intersections.

In the prior art, the sanitation department generally determines the number of specific sanitation workers dispatched to various traffic intersections in the city according to historical experience. However, since the number of vehicles and pedestrians at each traffic intersection changes in real time, it relies excessively on historical experience. As a result, there are many vehicles and pedestrians coming and going, and there are many kinds of wastes piled up. However, there are insufficient labor dispatches, and there may be less vehicles and pedestrians than usual. There are few wastes accumulated, but it is easy to dispatch labor. As a result, the city is not clean, and the latter is likely to lead to an increase in the operating costs of the sanitation department.

In order to overcome the above deficiencies, the present invention constructs an intelligent control box located at a traffic intersection, which can detect the number of real-time flow of each traffic section, to determine the nearby cleaning index, and realize adaptive control of the number of labor dispatched by the sanitation department. In order to avoid the waste of urban sanitation service resources, and to avoid the shortage of urban sanitation service resources.

1 is a block diagram showing the structure of an intelligent control box at a traffic intersection, including a cabinet, a control box communication device, a timer, a CCD image sensor, and a Freescale IMX6 processor, according to an embodiment of the present invention. The control box communication device, timer, CCD image sensor and Freescale IMX6 processor are all set on the cabinet. The timer, CCD image sensor and Freescale IMX6 processor are used to determine the number of pedestrians at the traffic intersection. The control box communication equipment A cleaner assignment strategy for determining traffic intersections based on the number of pedestrians.

Next, the specific structure of the intelligent control box at the traffic intersection of the present invention will be further described.

The control box includes: a control box body, including a box body and a hanging structure.

The box body is made of cold-rolled steel plate with a thickness of 1.5 mm and has stiffened plates and ribs; the suspended structure includes suspension mounting support, suspension channel, spacer, gasket and lag screw, and the suspension mounting support is a grooved steel structure. , the buckle is on the top wall of the box, the block is located between the suspension mounting support and the top wall of the box, and the suspension channel is a vertical U-shaped steel structure on the side, which is located above the suspension mounting support, and the upper steel strip and the lower steel strip And a longitudinal steel bar, the lag screw is used to connect the lower steel bar of the suspension mounting support and the suspension channel, the gasket is located between the suspension mounting support and the lower steel bar of the suspension channel, and the upper steel bar of the suspension channel is fixed at Suspended on the platform to achieve a hanging installation of the cabinet.

The control box includes a timer disposed in the box for outputting a time period in which the current time is located and outputting as a real-time time period, and the real-time time period is one of 24 time periods of the day.

The control box includes: a CCD image sensor disposed on an outer surface of the box for capturing a traffic intersection to obtain an intersection image.

The control box includes: a TF memory card, which is disposed in the box body for pre-storing intersection image of 24 reference time periods, and each of the reference time period intersection image corresponds to a time period, and each of the reference time period intersection image is at the corresponding time The CCD image sensor is used to pre-shoot the image of the traffic intersection without any pedestrian status. The TF memory card is also used to pre-store the traffic intersection address, the first binarization threshold, the second binarization threshold, and the aspect ratio. Range and symmetry range, the aspect ratio range is a range of statistics after calculating the aspect ratio of a plurality of reference pedestrian images, and the symmetry range is a range calculated by calculating symmetry of a plurality of reference pedestrian images.

The control box includes: a background selection device, is disposed in the box body, and is respectively connected to the timer and the TF memory card, and searches for a corresponding reference time segment intersection image in the TF memory card based on the real-time time period output by the current time timer and serves as Target background image output.

The control box comprises: an image segmentation device, disposed in the box body, respectively connected with the CCD image sensor, the TF memory card and the background selection device, and receives the high-definition intersection image of the current moment and the high-definition intersection of the current moment at the current moment by the CCD image sensor The image is used as the first high-definition intersection image and the second high-definition intersection image respectively, and the gray value of each pixel of the first high-definition intersection image is subtracted from the gray value of the corresponding position in the second high-resolution intersection image and the absolute value is taken. Obtaining a first absolute value, subtracting a gray value of each pixel of the first high-definition intersection image from a gray value of a pixel corresponding to the position in the target background image, and taking an absolute value to obtain a second absolute value, when the first absolute When the value is greater than or equal to the first binarization threshold and the second absolute value is greater than or equal to the second binarization threshold, the corresponding pixel of the first HD intersection image is determined as the motion pixel; otherwise, the corresponding pixel of the first HD intersection image is determined. For a still pixel, an image composed of all moving pixels in the first high-definition intersection image is output as a moving image, and the moving image is composed of one The plurality of motion regions are formed; the image morphology processing device is disposed in the box body and connected to the image segmentation device for receiving the moving image, and performing denoising processing on each motion region to obtain a denoising sub-image to fill the denoising sub-pixel The image is internally hollowed and connected to a breakpoint in the denoising sub-image to obtain an orthomorphic sub-image, and one or more shaped sub-images are output.

The control box includes: a feature extraction device disposed in the box and connected to the image morphology processing device to extract a horizontal maximum pixel number and a vertical maximum pixel number of each shaped sub-image, and divide the vertical maximum pixel number by the horizontal maximum pixel The number is obtained to obtain the aspect ratio, and the symmetry of each shaped sub-image is calculated.

The control box comprises: a Freescale IMX6 processor, disposed in the box body, and respectively connected with the feature extraction device and the TF memory card, respectively, the aspect ratio and the symmetry of each shaped sub-image and the aspect ratio range and the symmetry range respectively For comparison, when the aspect ratio of the shaped sub-image falls within the aspect ratio range and the symmetry falls within the symmetry range, the corresponding shaped sub-image is determined as the pedestrian sub-image, and the number of the pedestrian sub-images is calculated and output as the number of pedestrians. .

The control box comprises: a control box communication device, which is respectively connected with a Freescale IMX6 processor and a TF memory card, receives the number of pedestrians and a traffic intersection address, determines a cleaning index of the traffic intersection address based on the number of pedestrians, and is cleaned based on the intersection of the traffic intersection The index further determines the number of cleaners at the intersection of the traffic intersection, and sends the number of cleaners determined based on the intersection address to the sanitation service station near the intersection of the traffic intersection via the wireless communication link. The more pedestrians, the cleaner index of the intersection address The smaller the number, the more cleaners are dispatched at the intersection of traffic intersections.

Optionally, in the control box: the control box communication device comprises a microcontroller and a GPRS communication interface; the wireless communication link is a GPRS two-way communication link; and the TF memory card is replaced by a built-in memory of the Freescale IMX6 processor; And the control box communication device can be disposed on the outer side surface of the cabinet.

In addition, the abbreviation of General Packet Radio Service, which is a mobile data service available to GSM mobile phone users. GPRS can be said to be a continuation of GSM. GPRS is different from the previous method of continuously transmitting channels. It is transmitted in a packet type. Therefore, the user's cost is calculated based on the unit of transmission data, and the entire channel is not used, which is theoretically cheaper. The transmission rate of GPRS can be increased to 56 or even 114Kbps.

GPRS is often described as "2.5G", which means that the technology is between the second generation (2G) and third generation (3G) mobile communication technologies. He provides medium speed data transfer by utilizing unused TDMA channels in the GSM network. GPRS breaks through the GSM network can only provide circuit switching thinking mode, only by adding corresponding functional entities and partial transformation of the existing base station system to achieve packet switching, the investment of this transformation is relatively small, but get The user data rate is quite impressive. Moreover, because the mediation converters required by current wireless applications are no longer needed, connectivity and transmission are more convenient and easy. In this way, users can access the Internet, participate in interactive communication such as video conferencing, and users on the same video network (VRN) can even continue to connect to the network without dial-up.

Communication Mode of GPRS Packet Switching In the packet switched communication mode, data is divided into packets (packets) of a certain length, and each packet is preceded by a packet header (where the address flag indicates where the packet is sent). It is not necessary to pre-allocate channels before data transfer to establish a connection. Instead, each data packet arrives, and based on the information in the data header (such as the destination address), temporarily find an available channel resource to send the datagram. In this transmission mode, there is no fixed occupation relationship between the transmitting and receiving channels of the data, and the channel resources can be regarded as shared by all users. Since data services exhibit a sudden business characteristic in most cases, the demand for channel bandwidth varies greatly, so packet transmission for data transmission will make better use of channel resources. For example, a user who performs WWW browsing is browsing most of the time, and the time actually used for data transfer is only a small percentage. In this case, if a fixed channel is used, a large amount of resources will be wasted.

By adopting the intelligent control box at the traffic intersection of the invention, the existing control box at each traffic intersection is structurally modified according to the technical problem that the number of labors dispatched by the existing urban sanitation is difficult to control, on the one hand, the integration is high-precision, The targeted image recognition device collects real-time flow data at the traffic intersection, and on the other hand, integrates an effective control box communication device to implement labor dispatch control of the sanitation service site near the traffic intersection address based on the real-time human flow data.

It is to be understood that while the invention has been described above in the preferred embodiments, the embodiments are not intended to limit the invention. For those skilled in the art, many possible variations and modifications may be made to the technical solutions of the present invention, or modified to equivalent changes, etc., without departing from the scope of the present invention. Effective embodiment. Therefore, any simple modifications, equivalent changes, and modifications of the above embodiments may be made without departing from the spirit and scope of the invention.

Claims

An intelligent control box at a traffic intersection, the control box includes a box, a control box communication device, a timer, a CCD image sensor, and a Freescale IMX6 processor, a control box communication device, a timer, a CCD image sensor, and Freescale's IMX6 processors are located on the cabinet. Timers, CCD image sensors and Freescale's IMX6 processors are used to determine the number of pedestrians at traffic intersections. Control box communication equipment is used to determine the distribution of cleaners at traffic intersections based on the number of pedestrians. Strategy.
The intelligent control box at a traffic intersection according to claim 1, wherein the control box comprises:

a control box body, including a box body and a hanging structure;

The casing adopts a cold-rolled steel plate with a thickness of 1.5 mm and has a stiffened plate and a rib plate;

The suspended structure includes suspension mounting support, suspension channel, spacer, gasket and lag screw. The suspension mounting support is a grooved steel structure, which is buckled on the top wall of the box. The block is located on the suspension mounting support and the top of the box. Between the walls, the suspension channel is a vertical U-shaped steel structure, which is located above the suspension mounting support and consists of an upper steel bar, a lower steel bar and a longitudinal steel bar. The lag screws are used to connect the suspension mounting support and the suspension channel. a lower steel strip, the gasket is located between the suspension mounting support and the lower steel strip of the suspended channel steel, and the upper steel strip of the suspension channel is fixed on the suspension platform to realize the hanging installation of the box body;

a timer is disposed in the box for outputting the time period of the current time and outputting as a real time period, and the real time period is one of 24 time periods of the day;

a CCD image sensor is disposed on an outer surface of the box for photographing the traffic intersection to obtain an intersection image;

The TF memory card is disposed in the box for pre-storing the intersection image of 24 reference time segments, and the intersection image of each reference time period corresponds to a time period, and the image of the intersection time of each reference time period is the CCD image sensor pair in the corresponding time period. The TT memory card is also used to pre-store the traffic intersection address, the first binarization threshold, the second binarization threshold, the aspect ratio range, and the symmetry range, in the image obtained by pre-shooting at any intersection. The aspect ratio range is a range in which the aspect ratio is calculated after calculating the plurality of reference pedestrian images, and the symmetry range is a range in which the symmetry calculation is performed on the plurality of reference pedestrian images;

The background selection device is disposed in the box, and is respectively connected to the timer and the TF memory card, and searches for the corresponding reference time period intersection image in the TF memory card based on the real-time time period output by the current time timer and outputs the image as the target background image;

The image segmentation device is disposed in the box body, and is respectively connected with the CCD image sensor, the TF memory card and the background selection device, and receives the HD intersection image at the current moment and the HD intersection image at the current moment by the CCD image sensor, respectively as the first The HD intersection image and the second HD intersection image subtract the gray value of the pixel of the corresponding position in the second HD intersection image from the gray value of each pixel of the first HD intersection image and take an absolute value to obtain the first absolute value. And subtracting the gray value of each pixel of the first HD intersection image from the gray value of the corresponding position in the target background image and taking an absolute value to obtain a second absolute value, when the first absolute value is greater than or equal to the first two When the threshold is set and the second absolute value is greater than or equal to the second binarization threshold, the corresponding pixel of the first HD intersection image is determined as a motion pixel; otherwise, the corresponding pixel of the first HD intersection image is determined to be a still pixel, An image composed of all moving pixels in a high-resolution intersection image is output as a moving image, and the moving image is composed of one or more moving region groups ;

The image morphology processing device is disposed in the box body and connected to the image segmentation device for receiving the moving image, and performing denoising processing on each motion region to obtain a denoising sub-image, filling the internal cavity of the denoising sub-image and connecting Breaking points within the noise image to obtain an shaped sub-image, and outputting one or more shaped sub-images;

The feature extraction device is disposed in the box and connected to the image morphology processing device to extract the horizontal maximum pixel number and the vertical maximum pixel number of each shaped sub-image, and divide the vertical maximum pixel number by the horizontal maximum pixel number to obtain the aspect ratio. And calculating the symmetry of each shaped sub-image;

Freescale's IMX6 processor, located in the box, is connected to the feature extraction device and the TF memory card, and compares the aspect ratio and symmetry of each shaped sub-image with the aspect ratio range and the symmetry range respectively. When the aspect ratio of the image falls within the aspect ratio range and the symmetry falls within the symmetry range, the corresponding shaped sub-image is determined as the pedestrian sub-image, and the number of the pedestrian sub-images is calculated and output as the number of pedestrians;

The control box communication device is connected with the Freescale IMX6 processor and the TF memory card, receives the number of pedestrians and the intersection address, determines the cleaning index of the traffic intersection address based on the number of pedestrians, and further determines the dispatching traffic intersection based on the cleaning index of the traffic intersection address. The number of cleaners at the address, and the number of cleaners determined based on the traffic intersection address is sent to the sanitation service station near the traffic intersection address via the wireless communication link. The more pedestrians, the smaller the cleaning index of the traffic intersection address, and the traffic intersection is dispatched. The number of cleaners at the address is greater.
The intelligent control box located at a traffic intersection according to claim 2, wherein:

The control box communication device includes a microcontroller and a GPRS communication interface.
The intelligent control box located at a traffic intersection according to claim 2, wherein:

The wireless communication link is a GPRS two-way communication link.
The intelligent control box located at a traffic intersection according to claim 2, wherein:

Replace the TF memory card with the built-in memory of the Freescale IMX6 processor.
The intelligent control box located at a traffic intersection according to claim 2, wherein:

The control box communication device is disposed on the outer side surface of the cabinet.