CN107832731B - GSM-based wireless passenger car passenger number monitoring system - Google Patents
GSM-based wireless passenger car passenger number monitoring system Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/165—Detection; Localisation; Normalisation using facial parts and geometric relationships
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
- G06V20/53—Recognition of crowd images, e.g. recognition of crowd congestion
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/168—Feature extraction; Face representation
- G06V40/171—Local features and components; Facial parts ; Occluding parts, e.g. glasses; Geometrical relationships
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The invention relates to a GSM-based wireless monitoring system for the number of people in passenger cars, which structurally comprises a first signal input/output end of a core processor, a first signal output/input end of a steering engine A, a first signal output/input end of a core processor, a first signal output; a second signal input/output end of the core processor is correspondingly connected with a signal output/input end of the head camera; the third signal input/output end of the core processor is correspondingly connected with the signal output/input end of the vehicle tail camera; a fourth signal input/output end of the core processor is correspondingly connected with a signal output/input end of the steering engine B; the fifth signal input/output end of the core processor is correspondingly connected with the signal output/input end of the storage expansion chip; the signal input end of the core processor is correspondingly connected with the signal output end of the auxiliary equipment of the core processor; the signal output end of the core processor is correspondingly connected with the signal input end of the GSM wireless transmitting module.
Description
Technical Field
The invention relates to a GSM (global system for mobile communications) -based passenger vehicle passenger number wireless monitoring system, belonging to the technical field of wireless monitoring.
Background
According to statistics, the current passenger transportation accidents are not negligible in number every year, wherein a large part of the accidents are caused by overload of passenger passengers of passenger cars, many passenger cars carry passengers randomly in cities and towns, and the passenger cars are overloaded, so that the vehicles exceed the carrying capacity of the vehicles, instability of drivers in the driving process is increased, and the accidents are directly caused by tire burst, sudden deviation, brake failure, steering out of control and the like due to overweight load and overlarge deformation of tires.
In view of the disadvantages of the passenger cars, knowing and monitoring the number of people in the passenger cars becomes one of the necessary means for reducing traffic accidents and guaranteeing personal and property safety, and is also an indispensable measure for maintaining social security.
In the past, people in passenger cars are counted through spot check or issuance of a starting station of the passenger cars, great difficulty and disadvantages are brought to real-time monitoring, and people in the passenger cars cannot be known in real time; at present, infrared induction is adopted in the market part to monitor and count the number of people, and real-time monitoring and counting can be really realized, however, the infrared induction technology has various defects, the wrong counting condition often exists, and the scientific counting of the number of people cannot be realized.
Disclosure of Invention
The invention provides a GSM-based wireless passenger car passenger number monitoring system, which aims to realize real-time monitoring of the number of passengers in the passenger car passenger transportation process.
The technical solution of the invention is as follows: the GSM-based wireless passenger car number monitoring system structurally comprises a core processor, auxiliary equipment of the core processor, a head camera, an A steering engine, a tail camera, a B steering engine, a storage expansion chip, a GSM wireless transmitting module, a GSM wireless receiving module, an upper computer and an LED display large screen; the first signal input/output end of the core processor is correspondingly connected with the signal output/input end of the steering engine A; a second signal input/output end of the core processor is correspondingly connected with a signal output/input end of the head camera; the third signal input/output end of the core processor is correspondingly connected with the signal output/input end of the vehicle tail camera; a fourth signal input/output end of the core processor is correspondingly connected with a signal output/input end of the steering engine B; the fifth signal input/output end of the core processor is correspondingly connected with the signal output/input end of the storage expansion chip; the signal input end of the core processor is correspondingly connected with the signal output end of the auxiliary equipment of the core processor; the signal output end of the core processor is correspondingly connected with the signal input end of the GSM wireless transmitting module; the signal output end of the GSM wireless transmitting module is in butt joint with the signal input end of the GSM wireless receiving module through a GSM network; the signal output end of the GSM wireless receiving module is in butt joint with the signal input end of the upper computer; and the signal output end of the upper computer is in butt joint with the signal input end of the LED display large screen.
The invention has the advantages that:
1) according to the invention, based on a dynamic face recognition algorithm, whether a real person or an image acquired by a picture can be distinguished by comparing the relative states of human eyes in n (n >100) images, so that the situation that information processing errors of a processor occur when the picture is placed in front of a camera is avoided;
2) the invention can distinguish whether the error is caused by real person or other interference by comparing the relative positions of the heads in m (m is more than 100) images through a head detection and tracking algorithm based on hair;
3) according to the invention, by acquiring the image information within a preset range and extracting, judging and optimizing the number N of the faces and the number M of the heads in the acquired image information, errors caused by various interferences are truly eliminated, and the accuracy of data is realized;
4) according to the system, the number statistics acquired in real time is transmitted to the monitoring large screen of the number monitoring room of the passenger transport center through the wireless GSM, the number of passengers of the passenger transport vehicle is displayed in real time, a lot of unnecessary traffic safety hidden dangers are eliminated, the number of passengers of each license plate number is displayed in real time, a convenient human-computer interaction interface is provided for workers of the passenger transport center, unnecessary data lines are saved through wireless transmission, and the fund is saved.
Drawings
Fig. 1 is a general frame diagram of an embodiment of a wireless monitoring system for the number of passengers in a passenger car based on GSM.
FIG. 2 is a flow chart of an algorithm of an embodiment of a GSM-based wireless monitoring system for monitoring and counting the number of passengers in a passenger vehicle.
FIG. 3 is a flow chart of an embodiment algorithm for multiple data processing optimization for a GSM-based wireless passenger vehicle occupancy monitoring system.
Detailed Description
The GSM-based wireless passenger car number monitoring system structurally comprises a core processor, auxiliary equipment of the core processor, a head camera, an A steering engine, a tail camera, a B steering engine, a storage expansion chip, a GSM wireless transmitting module, a GSM wireless receiving module, an upper computer and an LED display large screen; the first signal input/output end of the core processor is correspondingly connected with the signal output/input end of the steering engine A; a second signal input/output end of the core processor is correspondingly connected with a signal output/input end of the head camera; the third signal input/output end of the core processor is correspondingly connected with the signal output/input end of the vehicle tail camera; a fourth signal input/output end of the core processor is correspondingly connected with a signal output/input end of the steering engine B; the fifth signal input/output end of the core processor is correspondingly connected with the signal output/input end of the storage expansion chip; the signal input end of the core processor is correspondingly connected with the signal output end of the auxiliary equipment of the core processor; the signal output end of the core processor is correspondingly connected with the signal input end of the GSM wireless transmitting module; the signal output end of the GSM wireless transmitting module is in butt joint with the signal input end of the GSM wireless receiving module through a GSM network; the signal output end of the GSM wireless receiving module is in butt joint with the signal input end of the upper computer; and the signal output end of the upper computer is in butt joint with the signal input end of the LED display large screen.
The preferable model of the steering engine A and the steering engine B is LD-20 MG; the steering engine A and the steering engine B assist the turning angle of the head camera and the tail camera to capture images.
The core processor is an ARM11 core processor, preferably a Samsung S3C 6410; the core processor is a control and processing module of the whole GSM-based passenger transport vehicle number wireless monitoring system, and is a core component of the whole system: on one hand, the core processor is used for controlling the steering engine A and the steering engine B to change the relative positions of the head camera and the tail camera, controlling the cameras to collect images, controlling the writing and reading of the storage expansion chip and controlling the working state of the GSM wireless transmitting module; on the other hand, the core processor is also a core component for information processing and data calculation, and is used for processing and analyzing image information acquired by the camera, including processing based on a dynamic face recognition algorithm and processing based on a head detection and tracking algorithm, is an indispensable part for realizing the whole algorithm, and is a hardware basis for software function operation.
The storage expansion chip is preferably an SD card storage expansion chip; in order to make up for the shortage of the memory space of the core processor, the SD card storage expansion chip is used for expanding the storage space of the core processor to assist the core processor to process corresponding data and write and read the data under the control of the core processor.
The GSM wireless transmitting module is preferably in the type of SIM900A, after detection of a hardware circuit and algorithm processing of software, the core processor controls the GSM wireless transmitting module to transmit processed data information to the GSM wireless transmitting module, and the GSM wireless transmitting module is used for receiving the data information of the core processor and transmitting the data information to the GSM wireless receiving module through a GSM network; the GSM network is used for connecting the GSM wireless transmitting module and the GSM wireless receiving module, thereby saving the fund of wired transmission and solving the inconvenience brought by wired transmission.
The GSM wireless receiving module is preferably NRF2401 in model number, and is used for receiving data information transmitted by the GSM network and timely connecting the data information to an upper computer (computer) through transmission of the GSM network.
The upper computer is a computer, and the signal output end of the GSM wireless receiving module is in butt joint with the signal input end of the computer processing module; and the signal output end of the computer processing module is in butt joint with the signal input end of the LED display large screen.
And the upper computer processes information data after receiving the data, calculates and distinguishes which GSM wireless transmitting module transmits the data, and performs corresponding processing, namely identifies which license plate number transmits the data.
The LED display large screen module is used for displaying data transmitted by each license plate number, so that corresponding workers can monitor and know data information of each passenger vehicle in real time and make corresponding instructions.
The auxiliary equipment of the core processor comprises a power supply system, and the power supply system preferably adopts an automobile power supply for power supply.
In view of the overall design of the GSM-based wireless monitoring system for the number of people in passenger cars, firstly, the auxiliary equipment power supply system of the core processor initializes the overall setting of the system, which provides necessity for the stable work of the whole system.
The head camera is arranged at the front part of the automobile (basically consistent with the position of the video player arranged on the automobile) and is used for acquiring the front image information of the number of people in the passenger automobile; the steering engine A is auxiliary equipment of the head camera, can assist in adjusting the relative position of the head camera and provides a means for acquiring images at different angles; the rear camera is arranged at the rear part of the passenger car and is used for collecting the rear image information of passengers in the passenger car; the steering engine B is auxiliary equipment of the vehicle tail camera and can assist in adjusting the relative position of the vehicle tail camera.
FIG. 2 is a flow chart of the GSM-based algorithm for monitoring and counting the number of passengers in a passenger vehicle, which includes initializing, judging whether to start the engine, supplying power to the whole monitoring system, simultaneously collecting image information by a head camera and a tail camera, dynamically recognizing human face, detecting and tracking the head based on hair, optimizing single data, optimizing multiple data, transmitting GSM wirelessly, receiving GSM wirelessly, calculating by an upper computer, and displaying by an LED.
The working method of the GSM-based wireless monitoring system for the number of people in passenger cars comprises the following steps:
1) initializing; after the product is formed, initialization is that the core processor is debugged before leaving the factory, and a program is programmed in the processor, namely the initialization of the whole system is finished;
2) judging whether the engine is started; when the automobile is started, the power is supplied to the GSM-based passenger wireless monitoring system, the monitoring system works, whether the starting of the engine is reflected by low power consumption of the whole system or safety of the whole system is judged in the whole monitoring system, after the passenger automobile is started, the power is supplied to the whole system by the internal engine and is rectified, boosted and stepped down by voltage, so that the whole system is in a working state, the safety and fairness of the whole system are reflected in whether workers of the passenger automobile cannot intervene the working of the whole system, the low power consumption is reflected in that the whole system does not work before the engine is not started, other components such as a core processor and the like do not work, an LED display large screen displays that the passenger automobile is in a parking and non-starting state, and unnecessary electric quantity consumption is saved; after the engine is judged to be started, the automatic power supply system of the system supplies power to each module to enable each module to start to work normally;
3) the vehicle head camera and the vehicle tail camera simultaneously acquire passenger image information; the head camera and the tail camera are information acquisition parts of the whole system; the steering engine A is used for assisting the operation of the head camera and is responsible for adjusting the relative position of the head camera, and the collected front images are used for identifying the number N of passengers; the rear camera is arranged at the rear part of the passenger car and used for collecting rear image information of passengers in the passenger car, the steering engine B is used for assisting the camera in operation and is responsible for adjusting the relative position of the rear camera, and the collected rear images are used for detecting and identifying the number M of the passengers by using the heads based on hair;
4) performing a head detection and tracking algorithm of the human face and the hair; the human face identification human face area is characterized in that the human face identification human face area is dynamic, the collected image is possibly information of one picture, but the image information has no dynamic information, and people can distinguish whether the human face is a real person or an artificial person by collecting n (n is more than or equal to 100) images and collecting blinking of human eyes in the human face; the method is characterized in that the number of the heads behind is identified by a head detection and tracking algorithm based on hair, the method comprises the following steps of tracking, distinguishing the positions of the heads of people in an image by analyzing m (m is more than or equal to 100) images through acquired image information to determine the final number of people, of course, for people with less hair, a head detection algorithm based on skin color can be integrated into the algorithm, and the head detection and tracking algorithm based on hair and the head detection algorithm based on skin color are integrated to process the data;
5) optimizing single data by using a single data optimization algorithm; the optimization of the single data is to eliminate errors caused by single-type image information, and the passenger cars have a lot of situations of carrying children, and under the situation, the distance between the children and the carriers is very close, so that the situation that the distance inside the data is very close is eliminated through an algorithm, and the defect is eliminated;
6) performing multi-data optimization by using a multi-data optimization algorithm; after single data optimization, comparing the number N of the faces identified by the faces with the number M of the heads, if N is equal to M, indicating that the number of people counted at present is accurate, and if N is not equal to M, indicating that the number of people counted at present is not an accurate number, so that the relative position of a head camera needs to be adjusted by an A steering engine and the relative position of a tail camera needs to be adjusted by a B steering engine again, acquiring images again, comparing N with M after being processed by a core processor, and sequentially circulating;
7) if the corrected N and M values in the core processor are equal, the core processor transmits the data through the GSM wireless transmitting module, the data are wirelessly transmitted through the GSM network, received by the GSM wireless receiving module and transmitted to the upper computer, the upper computer checks the data transmitted by the passenger car with which license plate is through the inside, and the data are correspondingly processed and displayed on the LED large screen, so that the staff in the passenger transport center can know the data in real time and make a corresponding processing mode.
FIG. 3 is a flow chart of the algorithm for optimizing the multi-data processing, which comprises the steps of judging whether N is equal to M or not, respectively moving the head camera and the tail camera by the steering engine A and the steering engine B correspondingly, re-collecting images and carrying out corresponding processing; if N is equal to M, the data information is transmitted to the GSM wireless transmitting module; if the data is not equal, the processor performs corresponding processing to enable the steering engine A to make an angle to enable the head camera to move to a corresponding position, the steering engine B makes an angle to enable the tail camera to move to a corresponding position, then image information is collected again at the same time and transmitted to the core processor, after the core processor performs corresponding processing, whether N and M are equal or not is recalculated, if so, the image information is transmitted to the GSM wireless transmitting module, and if not, the steps are repeated to collect and process the image information.
According to the technical scheme provided by the invention, the image information in the preset range is respectively collected from the front part and the rear part of the passenger car, the number of front faces and the number of heads in the image information are identified through a dynamic face recognition algorithm and a head detection and tracking algorithm based on hair, different front faces are counted, the number of heads is counted at the same time, and then the number of passengers of the passenger car at that time is finally obtained through multi-data processing optimization; and further transmitting the data to a GSM wireless transmitting module through a data acquisition module, enabling the GSM wireless receiving module to receive the data after the data passes through a GSM network, transmitting the final data to an upper computer (computer), and finally displaying the number of passengers of each license plate number at that time on a monitoring display screen of a monitoring room.
Based on the above, the present invention is characterized in that:
1) an ARM11 core processor is adopted as the core processor, the memory space of the processor is large, the processing capacity is strong, the processing capacity is better than that of a common single chip microcomputer, and the control capacity and the operation processing capacity are more accurate;
2) the system respectively adopts a steering engine A and a head camera as well as a steering engine B and a tail camera to simultaneously acquire image information from two directions, and not only is single data provided with an optimization algorithm. Moreover, a multi-data optimization processing algorithm is adopted, so that the finally obtained data information is more accurate;
3) the false image brought by the picture information can be effectively prevented by dynamic face recognition; the head detection and tracking of the hair can effectively prevent the interference caused by the interference of the hair, and in addition, the auxiliary detection algorithm based on the skin color effectively solves the interference caused by the image processing after the acquisition of part of the users with the optical heads;
4) the single data in the single-type images are processed and optimized, so that the defect that adults carry children who do not buy tickets but are marked as one person is overcome; the steering engine is adopted to make an angle to coordinate the relative position of the camera, image information is collected again and processed, and multiple data are optimized, so that the error caused by single collected information data is really realized;
5) wireless transmission and reception are adopted, so that the inconvenience of installing wires in the running process of an automobile is solved, unnecessary data wires are saved, and meanwhile, the fund is saved;
6) the whole system updates data every 5 minutes, displays the data on the LED large screen in real time, and really achieves real-time monitoring.
Examples
The GSM-based passenger vehicle number wireless monitoring system structurally comprises a core processor, a power supply system, a head camera, an A steering engine, a tail camera, a B steering engine, a storage expansion chip, a GSM wireless transmitting module, a GSM wireless receiving module, an upper computer and an LED display large screen; the first signal input/output end of the core processor is correspondingly connected with the signal output/input end of the steering engine A; a second signal input/output end of the core processor is correspondingly connected with a signal output/input end of the head camera; the third signal input/output end of the core processor is correspondingly connected with the signal output/input end of the vehicle tail camera; a fourth signal input/output end of the core processor is correspondingly connected with a signal output/input end of the steering engine B; the fifth signal input/output end of the core processor is correspondingly connected with the signal output/input end of the storage expansion chip; the signal input end of the core processor is correspondingly connected with the signal output end of the power supply system; the signal output end of the core processor is correspondingly connected with the signal input end of the GSM wireless transmitting module; the signal output end of the GSM wireless transmitting module is in butt joint with the signal input end of the GSM wireless receiving module through a GSM network; the signal output end of the GSM wireless receiving module is in butt joint with the signal input end of the upper computer; and the signal output end of the upper computer is in butt joint with the signal input end of the LED display large screen.
The model of the steering engine A and the model of the steering engine B are LD _20 MG.
The core processor is an ARM11 core processor with a model of samsung S3C 6410.
The storage expansion chip is preferably an SD card storage expansion chip.
The GSM wireless transmitting module is in the model of SIM 900A.
The GSM wireless receiving module is NRF 2401.
The upper computer is a computer, and the signal output end of the GSM wireless receiving module is in butt joint with the signal input end of the computer processing module; and the signal output end of the computer processing module is in butt joint with the signal input end of the LED display large screen.
The auxiliary equipment of the core processor is a power supply system, and the power supply system adopts an automobile power supply for supplying power.
The head camera is arranged at the front part of the automobile (basically consistent with the position of the video player arranged on the automobile) and is used for acquiring the front image information of the number of people in the passenger automobile; the steering engine A is auxiliary equipment of the head camera, can assist in adjusting the relative position of the head camera and provides a means for acquiring images at different angles; the rear camera is arranged at the rear part of the passenger car and is used for collecting the rear image information of passengers in the passenger car; the steering engine B is auxiliary equipment of the vehicle tail camera and can assist in adjusting the relative position of the vehicle tail camera.
The working method of the GSM-based wireless monitoring system for the number of people in passenger cars comprises the following steps:
1) initializing; after the product is formed, initialization is that the core processor is debugged before leaving the factory, and a program is programmed in the processor, namely the initialization of the whole system is finished;
2) judging whether the engine is started; when the automobile is started, the power is supplied to the GSM-based passenger wireless monitoring system, the monitoring system works, whether the starting of the engine is reflected by low power consumption of the whole system or safety of the whole system is judged in the whole monitoring system, after the passenger automobile is started, the power is supplied to the whole system by the internal engine and is rectified, boosted and stepped down by voltage, so that the whole system is in a working state, the safety and fairness of the whole system are reflected in whether workers of the passenger automobile cannot intervene the working of the whole system, the low power consumption is reflected in that the whole system does not work before the engine is not started, other components such as a core processor and the like do not work, an LED display large screen displays that the passenger automobile is in a parking and non-starting state, and unnecessary electric quantity consumption is saved; after the engine is judged to be started, the automatic power supply system of the system supplies power to each module to enable each module to start to work normally;
3) the vehicle head camera and the vehicle tail camera simultaneously acquire passenger image information; the head camera and the tail camera are information acquisition parts of the whole system; the steering engine A is used for assisting the operation of the head camera and is responsible for adjusting the relative position of the head camera, and the collected front images are used for identifying the number N of passengers; the rear camera is arranged at the rear part of the passenger car and used for collecting rear image information of passengers in the passenger car, the steering engine B is used for assisting the camera in operation and is responsible for adjusting the relative position of the rear camera, and the collected rear images are used for detecting and identifying the number M of the passengers by using the heads based on hair;
4) performing a head detection and tracking algorithm of the human face and the hair; the human face identification human face area is used for calculating the number of human faces, and the human face identification human face area is characterized by being dynamic, wherein the collected image is possibly information of one picture, but the image information has no dynamic information, and the human face identification human face area is distinguished by collecting n (n is more than or equal to 100) images and collecting blinking of human eyes in the human face; the method is characterized in that the number of the heads behind is identified by a head detection and tracking algorithm based on hair, the method comprises the following steps of tracking, distinguishing the positions of the heads of people in an image by analyzing m (m is more than or equal to 100) images through acquired image information to determine the final number of people, of course, for people with less hair, a head detection algorithm based on skin color can be integrated into the algorithm, and the head detection and tracking algorithm based on hair and the head detection algorithm based on skin color are integrated to process the data;
5) optimizing single data by using a single data optimization algorithm; the optimization of the single data is to eliminate errors caused by single-type image information, and a plurality of situations of carrying children exist in the passenger car, and under the situations, the distances between the children and a carrier are very close, so that the situation of the very close distances in the data is eliminated through an algorithm, the defect is eliminated, and the data with the face distance within 30 centimeters and the head distance within 30 centimeters can be specifically eliminated;
6) performing multi-data optimization by using a multi-data optimization algorithm; after single data optimization, comparing the number N of the faces identified by the faces with the number M of the heads, if N is equal to M, indicating that the number of people counted at present is accurate, and if N is not equal to M, indicating that the number of people counted at present is not an accurate number, so that the relative position of a head camera needs to be adjusted by an A steering engine and the relative position of a tail camera needs to be adjusted by a B steering engine again, acquiring images again, comparing N with M after being processed by a core processor, and sequentially circulating;
7) if the corrected N and M values in the core processor are equal, the core processor transmits the data through the GSM wireless transmitting module, the data are wirelessly transmitted through the GSM network, received by the GSM wireless receiving module and transmitted to the upper computer, the upper computer checks the data transmitted by the passenger car with which license plate is through the inside, and the data are correspondingly processed and displayed on the LED large screen, so that the staff in the passenger transport center can know the data in real time and make a corresponding processing mode.
FIG. 3 is a flow chart of the algorithm for optimizing the multi-data processing, which comprises the steps of judging whether N is equal to M or not, respectively moving the head camera and the tail camera by the steering engine A and the steering engine B correspondingly, re-collecting images and carrying out corresponding processing; if N is equal to M, transmitting the data information to a GSM wireless transmitting module; if the data is not equal, the processor performs corresponding processing to enable the steering engine A to make an angle to enable the head camera to move to a corresponding position, the steering engine B makes an angle to enable the tail camera to move to a corresponding position, then image information is collected again at the same time and transmitted to the core processor, after the core processor performs corresponding processing, whether N and M are equal or not is recalculated, if so, the image information is transmitted to the GSM wireless transmitting module, and if not, the steps are repeated to collect and process the image information.
According to the technical scheme provided by the invention, the image information in the preset range is respectively collected from the front part and the rear part of the passenger car, the number of front faces and the number of heads in the image information are identified through a dynamic face recognition algorithm and a head detection and tracking algorithm based on hair, different front faces are counted, the number of heads is counted at the same time, and then the number of passengers of the passenger car at that time is finally obtained through multi-data processing optimization; and further transmitting the data to a GSM wireless transmitting module through a data acquisition module, enabling the GSM wireless receiving module to receive the data after the data passes through a GSM network, transmitting the final data to an upper computer (computer), and finally displaying the number of passengers of each license plate number at that time on a monitoring display screen of a monitoring room.
Claims (5)
1. The monitoring method of the GSM-based passenger vehicle passenger number wireless monitoring system is characterized by comprising the following steps:
1) initializing;
2) judging whether the engine is started;
3) the vehicle head camera and the vehicle tail camera simultaneously acquire passenger image information;
4) performing a head detection and tracking algorithm of the human face and the hair;
5) the single data optimization algorithm is used for optimizing the single data, the single data optimization is used for eliminating errors caused by single-type image information, and the passenger cars carry a lot of children, and under the condition, the distance between the children and a carrier is very close, so that the condition that the distance between the inner parts of the data is very close is eliminated through the algorithm, and the defect is eliminated;
6) the method comprises the steps of carrying out multi-data optimization by using a multi-data optimization algorithm, comparing the number N of human faces identified by human faces with the number M of heads after single-data optimization, indicating that the number of people counted at present is accurate if N is equal to M, indicating that the number of people counted at present is not an accurate number if N is not equal to M, adjusting the relative position of a head camera by an A steering engine and the relative position of a tail camera by a B steering engine again, acquiring images again, comparing N with M after being processed by a core processor, and sequentially circulating.
2. The monitoring method of the GSM-based wireless monitoring system for the number of people in passenger cars according to claim 1, wherein in the step 3), the head camera and the tail camera simultaneously acquire passenger image information: the head camera and the tail camera are information acquisition parts of the whole system; the steering engine A is used for assisting the operation of the head camera and is responsible for adjusting the relative position of the head camera, and the collected front images are used for identifying the number N of passengers; the rear camera is arranged at the rear part of the passenger car and used for collecting rear image information of passengers in the passenger car, the steering engine B is used for assisting the camera in operation and is responsible for adjusting the relative position of the rear camera, and the collected rear images are used for detecting and identifying the number M of the passengers by the head based on hair.
3. The monitoring method of the GSM-based wireless monitoring system for the number of people in passenger cars according to claim 1, characterized in that the step 4) is implemented with a head detection and tracking algorithm for human faces and hairs; the human face identification human face area calculates the number of human faces, and is characterized in that the human face identification human face area is dynamic, the collected image is likely to be information of one picture, but the image information has no dynamic information, and people can distinguish whether the human face is a real person or an artificial image by collecting n images and collecting blinking of human eyes in the human face; the method is characterized in that the number of the following heads is identified by a head detection and tracking algorithm based on hair, the final number of people is determined by tracking and distinguishing the positions of the heads of people in an image by analyzing m images through collected image information, of course, for people with less hair, a head detection algorithm based on skin color can be integrated in the algorithm, and the data is processed after the head detection and tracking algorithm based on hair and the head detection algorithm based on skin color are integrated.
4. The monitoring method of the GSM-based wireless monitoring system for the number of passengers in a passenger vehicle according to claim 1, further comprising the step 7): if the corrected N and M values in the core processor are equal, the core processor transmits the data through the GSM wireless transmitting module, the data are wirelessly transmitted through the GSM network, received by the GSM wireless receiving module and transmitted to the upper computer, the upper computer checks the data transmitted by the passenger car with which license plate is through the inside, and the data are correspondingly processed and displayed on the LED large screen, so that the staff in the passenger transport center can know the data in real time and make a corresponding processing mode.
5. The monitoring method of the GSM-based wireless monitoring system for the number of passengers in a passenger vehicle according to claim 1, wherein the step 2) is performed to judge whether the engine is started: before the engine of the whole system is not started, other components such as a core processor and the like do not work, and the LED display large screen displays that the passenger vehicle is in a parking and non-starting state, so that unnecessary electric quantity consumption is saved; after the engine is judged to be started, the automatic power supply system of the system supplies power to each module, so that each module starts to work normally.
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