CN100466008C - Traffic monitoring method and electronic police system - Google Patents
Traffic monitoring method and electronic police system Download PDFInfo
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- CN100466008C CN100466008C CNB2006100756584A CN200610075658A CN100466008C CN 100466008 C CN100466008 C CN 100466008C CN B2006100756584 A CNB2006100756584 A CN B2006100756584A CN 200610075658 A CN200610075658 A CN 200610075658A CN 100466008 C CN100466008 C CN 100466008C
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Abstract
A method for monitoring road traffic includes collecting environmental information by light transducer, regulating and confirming operation parameters of video camera by front end controller, picking up image of vehicle traffic on road by said camera, using ground coil to collect traffic state information of various directions, sending image information and state information to remote control center after they are processed by front end controller, judging traffic state on road by said controller for automatically regulating switch - time of traffic light according to road condition. The electronic police system is also disclosed.
Description
Technical field
The present invention relates to a kind of method that is used for traffic monitoring, also relate to a kind of electronic police system that adopts this method.
Background technology
Under the prior art, the method that traffic control department monitors road traffic condition is to adopt video camera picked-up road traffic condition, and the image information that video camera is absorbed is sent to remote control center, carries out manual monitoring by the demonstration of display; And can analyze image information, draw judgement to local each road section traffic volume situation (vehicle flowrate, the speed of a motor vehicle, the degree etc. of blocking up); For the vehicle that makes a dash across the red light, can also in image information, discern the number-plate number, generate the violation record that has information such as time, place, the number-plate number and unlawful practice automatically.Video camera mainly is arranged on road cross, each crossing is provided with some song video cameras, respectively towards different directions, the corresponding front-end processor control of each video camera, the image information of picked-up is sent into front controller, front-end processor is compressed, and is delivered to remote control center by information transmission unit after it is carried out processing such as distortion rectification and noise reduction.For taking the image of vehicles running red light, front-end processor is gathered red light duty handover information, the control video camera is taken when corresponding red light is bright, by front controller or remote control center image information is analyzed, the relative position of identification vehicle and stop line is judged vehicles running red light.
Present two aspects of the defect map of prior art: the one, the mode of operation of video camera is predefined, can not adjust automatically according to environmental aspect (as light intensity, humidity etc.), can't guarantee picture quality, even the impalpable phenomenon of the number-plate number can occur; The 2nd, can not monitor vehicle flowrate accurately and effectively, can not regulate the switching time of traffic lights according to the vehicle flowrate of different directions, when needs are monitored the vehicle amount, vehicle amount supervisory system can only be set in addition, not only increased cost, and it is also inconvenient to operate.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides a kind of electronic police system that is used for the method for traffic monitoring and adopts this method, can obtain high-quality image by this method, and can monitor accurately and effectively vehicle flowrate.
The present invention realizes that the technical scheme of above-mentioned purpose is:
A kind of traffic monitoring method comprises the following steps:
6) pass through the environmental information that the ambient condition sensor acquisition influences the video camera running parameter;
7) determine the due running parameter of video camera by front-end control device according to environmental information, and the running parameter of video camera is set and regulated by front-end control device;
8) by video camera picked-up road vehicle traffic image, handle and compression, deliver to remote control center through front-end control device;
9) by being embedded in the road traffic status information of the ground induction coil collection all directions on the road, after front-end control device is handled, generate the road traffic status data of all directions, deliver to remote control center;
10) by the switching of front-end control device control traffic lights duty, front-end control device is judged the road traffic state of all directions according to the road traffic status data, under all directions road traffic situation in good condition, carry out the switching of traffic lights duty according to default normal mode, under the situation that the road traffic state of one or more directions obviously blocks up than other directions, adjust the time interval that traffic lights switch according to default adjustment modes, and prolong the bright relative time of direction green light that blocks up.
A kind of electronic police system comprises front end video component, ground induction coil and front-end control device, wherein
Described front end video component is provided with some video cameras and some ambient condition sensors, described each video camera be used to absorb counterparty separately to the road vehicle image, generate video image information and deliver to described front-end control device, the corresponding environmental state information of described each ambient condition sensor acquisition is delivered to described front-end control device;
Described ground induction coil is several, and burying underground respectively needs each place of monitoring on the road, is used to respond to the pressure that road vehicle produces, and changes it into traffic behavior analog electrical signal, delivers to described front-end control device;
Described front-end control device is used for described video image information and described traffic behavior analog electrical signal are handled, and generates high fidelity visual information and traffic behavior statistics, delivers to remote control center; Described environmental state information is carried out statistical treatment, form stable ambient condition data, and determine the running parameter of video camera under the current environment state to generate setting or regulating command to the video camera running parameter according to the corresponding relation of setting, send to camera control unit.
Described front-end processor comprises that information accepts unit, information process unit and information transmission unit, wherein:
Described information is accepted the unit and is communicated by letter with ground induction coil with described front end video component, receives the video image information of described front end video component and the analog electrical signal of ground induction coil, is sent to described information process unit;
Described information process unit comprises red light manager, vehicle monitoring device, Video Controller and front-end processor, and described red light manager is provided with the traffic light signal acquisition module, gathers the duty switching signal of traffic lights, delivers to front-end processor; Described wagon detector is accepted the described analog electrical signal from ground induction coil, generates real-time surface vehicle traffic status data, delivers to front-end processor; Described Video Controller is according to described environmental state information, calculate the optimum working parameter of video camera under this ambient condition, generate described setting or regulating command to the video camera mode of operation, send to video camera, and receive the video camera work order that described front-end processor is sent, change into the command signal that video camera can be discerned, send to video camera; Described front-end processor is sent described video camera work order when receiving the red light working signal, and receive described video image information, carry out distortion rectification and noise reduction process, generate high fidelity visual information, whether analysis and judgement has vehicles running red light, and the image information that will have vehicles running red light deposits its image data base violating the regulations in, receive described real-time surface vehicle traffic status data, carry out statistical study, generate stable surface vehicle traffic status data, deposit its traffic state data storehouse in; Described information transmission unit is used for remote control center communication.
Described red light manager also is provided with traffic lights switching controls module, described front-end processor is analyzed described surface vehicle traffic status data, judge the vehicle congestion of all directions, and the congestion information of all directions delivered to described traffic lights switching controls module, described traffic lights switching controls module is under all directions road traffic situation in good condition, regularly generate the switching command of traffic lights duty according to default normal mode, deliver to traffic-light control device, under the situation that certain direction road traffic state obviously blocks up than other directions, generate the traffic lights switching command according to default adjustment modes, deliver to traffic-light control device.
Because the present invention is by some ambient condition sensors, at any time gather the environmental information that influences the video camera running parameter, running parameter according to environmental changes such as light intensity, humidity adjusting video camera remains under the optimum Working video camera, provides assurance for absorbing high-quality image; Because the present invention is by being provided with ground induction coil, at any time obtain the information that car speed, vehicle flowrate etc. relate to traffic, for traffic administration provides traffic state data accurately and effectively, and same system is adopted in the processing of data processing and transmission and image information and transmission, reduced cost of investment, operated easily and use; Because the present invention can judge the traffic congestion situation of road cross different directions at any time by to the data analysis of traffic, regulate the switching of traffic lights automatically according to the jam situation of different directions, help reducing blocking up of road cross.
Description of drawings
Fig. 1 is the structural representation of electronic police system provided by the invention;
Fig. 2 is the part-structure synoptic diagram that relates to video camera control in the electronic police system provided by the invention.
Embodiment
For described traffic monitoring method, in step 1), described ambient condition sensor can be one or more optical sensors, can also comprise one or more humidity sensors, be used to gather ambient light intensity and humidity information, so that under different ambient condition (for example daytime and night different illumination intensity), select best video camera running parameter.
Because working sensor is environment in the open, be subjected to multiple factor affecting such as environment temperature, humidity, weather, the error of the instant value of its generation can be bigger, tackle its transient data that obtains (real time environment status information) and carry out various Error processing, form stable data, used error processing method can be methods such as curve compensation, mean value.
In step 2) in, the running parameter of video camera can be determined according to the performance of video camera under the varying environment state, also can determine by test, corresponding relation according to video camera running parameter and ambient condition, form corresponding relation chart, corresponding relation curve and/or empirical Calculation formula, and deposit these corresponding relations in front-end control device.Under certain ambient condition, according to these corresponding relations, select suitable algorithm can carry out the data analysis and the calculating of video camera running parameter, the result who calculates can compare with the video camera work at present parameter from video camera, under both inconsistent situations, generation sends video camera to the setting and the regulating command of video camera running parameter.Described video camera is regulated running parameter according to these instructions, so that obtain best shooting effect.When finding that stored relation is inaccurate, can also adopt the mode of artificial output to make amendment.According to the actual needs of video camera, described setting and regulating command to video camera comprises: to the setting command of the mode of operation of video camera, to the switching command of video camera mode of operation, to the setting command of camera aperture, to the switching command of camera aperture.
In step 3), described front-end control device can carry out image distortion correction, smothing filtering noise reduction process, figure image intensifying and sharpening processing to video image information, the edge detects and handles, generate high fidelity visual information, to make things convenient for the use in information transmission and the subsequent process.
According to the high fidelity visual information after handling, can carry out the vehicle analysis and judgement of making a dash across the red light, promptly vehicle on the red light direction and stop line are discerned automatically, the image that contains live conductor and go-wire vehicle is done (making a dash across the red light) sign in violation of rules and regulations, it is for future reference to deposit the vehicles peccancy image data base in.The number-plate number to vehicles running red light is discerned, according to when and where information contained in the image information, automatically generation contains the violation record of unlawful practice (making a dash across the red light), violation time, violation place, violation vehicle identification number, delivers to disposal system processing in violation of rules and regulations.
In step 4), the real-time road traffic status information that the reply ground induction coil is sent here is carried out various Error processing, form stable data, used error processing method can be methods such as curve compensation, mean value, and can generate the various curves that relate to various indexs of correlation such as average speed, vehicle flowrate automatically, so that directly perceived the demonstration.
In step 5), can be rule of thumb, the concrete situation (for example major trunk roads) of test and all directions determines traffic lights switch mode under the normal condition and the traffic lights switch mode under various unusual (blocking up) situation, form corresponding relation chart, corresponding relation curve and/or the empirical Calculation formula of traffic lights switch mode and traffic congestion situation, and deposit these corresponding relations in front-end control device, under the situation that occurs blocking up, can calculate or read corresponding switch mode by this corresponding relation.When finding that these corresponding relations need be adjusted, can adopt the mode of artificial input to adjust accordingly.
Remote control center carries out unified organization and management to the relevant information of front-end collection, realizes supervision, scheduling, commander and control to traffic in the zone.
Fig. 1 has provided the basic system of electronic police system provided by the invention, and being presented in the foregoing invention content of electronic police system basic structure provided, and repeats no more.
Fig. 2 has provided the part-structure synoptic diagram that relates to the control of video camera running parameter in the electronic police system of the present invention.Referring to Fig. 1, video camera in this electronic police system can adopt intelligent high-speed one spherical camera, this video camera only needs to install one on a crossing direction, just can take the far and near scape image in each track, rifle formula video camera with traffic monitoring system employing is in the past compared, reduced cost of investment widely, and motor vehicle is made a dash across the red light, and identification and road monitoring function are finished by a systematic unity automatically for candid photograph, vehicles peccancy tracking, overspeed of vehicle measuring and calculating, vehicle security administration, vehicle flowrate, car row.
Described video camera can be furnished with utility appliance such as additional light source and power supply.
The part that relates to the control of video camera running parameter in the electronic police system is mainly by described ambient condition sensor and described Video Controller, wherein said sensor has constituted the sensing unit of video camera running parameter control with the data acquisition unit of sensor, described Video Controller has constituted the control module of video camera running parameter control, data collector of the common connection of described each ambient condition sensor, gather environmental state information in real time and send described data acquisition module to, described data acquisition module carries out data processing to the real time environment information from described each sensor, generate stable ambient condition preprocessed data, described Video Controller is analyzed and computing described ambient condition preprocessed data according to the mode of setting, draw the due running parameter of video camera under this ambient condition, generate described setting and regulating command, send video camera to video camera.
Described regulating control command to video camera can comprise: to the setting command of the mode of operation of video camera, to the switching command of video camera mode of operation, to the setting command of camera aperture, to the switching command of camera aperture and other parameter settings and the switching that may relate to when video camera is worked.The setting of these instructions, switching all can realize according to the characteristic of video camera itself.
Owing to what the video camera running parameter was had the greatest impact is light intensity, therefore under normal conditions, described ambient condition sensor should comprise that at least (a plurality of sensors can avoid that the individual sensor that reason causes such as to block malfunctioning because of accident to one or more optical sensors, data acquisition unit can be by data analysis, invalid data is rejected), the environmental state information of its collection is the light intensity heat transfer agent.Used optical sensor can directly adopt existing outdoor version optical sensor product or other appropriate technologies.
Described ambient condition sensor can also comprise one or more humidity sensors, and the environmental state information of its collection is the air humidity heat transfer agent.Used humidity sensor can adopt existing outdoor version humidity sensor product or other appropriate technologies.
According to the control needs, the ambient condition sensor of other types can also be set, can select various existing sensors products usually for use.
Described data acquisition module generally can adopt single-chip microcomputer.Described single-chip microcomputer can be provided with A/D conversion circuit, so that the environmental state information that described ambient condition sensor is sent here with the analog electrical signal form is carried out the digitizing conversion, generation can be the digitizing ambient condition data of single-chip microcomputer identification, described A/D conversion circuit can directly be integrated in single-chip microcomputer product (on the existing part single-chip microcomputer product integrated analog to digital conversion circuit), also can be provided with separately.Described single-chip microcomputer carries out Error processing and data statistics to described digitizing ambient condition data, obtains accurately stable ambient condition preprocessed data.The main function of single-chip microcomputer is that the data error is handled, because working sensor is environment in the open, be subjected to multiple factor affecting such as environment temperature, humidity, weather, the error of the instant value of its generation can be bigger, so must carry out various Error processing to its measurement data, form stable data, used error processing method can be methods such as curve compensation, mean value.
Can be provided with the Communications Processor Module that is used for intercoming mutually between described data acquisition module and the described Video Controller, these communication processing modules have constituted the part of described information receiving unit, described Communications Processor Module is made up of the two RAM in parallel port, described data acquisition module deposits the ambient condition preprocessed data of its generation in parallel port two RAM, and to described Video Controller transmission handshaking information, after described Video Controller is received described handshaking information, in two RAM, take corresponding data away by the parallel port mode.
Described Video Controller can adopt general ARM7 processor, sort processor has high performance floating-point operation ability, under the support of analysis software, to from the ambient condition preprocessed data of described data acquisition module or to analyzing computing from the ambient condition preprocessed data of described data acquisition module with from the camera distance data of camera automatic focusing system, generate the optimum working parameter of video camera under the current environment state, and with these parameters with comparing from the video camera work at present parameter of video camera, under both inconsistent situations, generate described setting and regulating command to the video camera running parameter, send video camera to, described video camera instructs according to these, the real-time regulated running parameter is to obtain best shooting effect.The optimum working parameter of video camera can be determined according to the performance of video camera under the varying environment state, also can determine by test, corresponding relation according to ambient condition and video camera running parameter, form corresponding relation chart, corresponding relation curve and/or empirical Calculation formula, select suitable algorithm to carry out data analysis and calculating according to prior art.
Described Video Controller be with can adopting the communication of RE485 communication protocol between the video camera, by the Communications Processor Module of Video Controller the steering order to video camera is transferred to video camera, and obtains video camera work on hand due various parameters of institute and camera distance.
Described red light manager also is provided with traffic lights switching controls module, described front-end processor is analyzed described surface vehicle traffic status data, judge the vehicle congestion of all directions, and the congestion information of all directions delivered to described traffic lights switching controls module, described traffic lights switching controls module is under all directions road traffic situation in good condition, regularly generate the switching command of traffic lights duty according to default normal mode, deliver to traffic-light control device, under the situation that certain direction road traffic state obviously blocks up than other directions, generate the traffic lights switching command according to default adjustment modes, deliver to traffic-light control device.When traffic lights switching controls module was sent the traffic lights switching command, described traffic light signal was gathered corresponding instruction information, forms described traffic lights duty switching signal.
Described information transmission unit can adopt switch or fiber optic or switch and fiber optic, connect remote control center by these switches and/or fiber optic, communicate by letter with remote control center, the information that described information process unit is sent passes to described remote control center, and the instruction that remote control center is sent passes to described information process unit.
Described remote control center carries out unified organization and management with some front-end control device communications to the information of front-end control device collection, is the control center of electronic police system.Described remote control center comprises information handling system, command center system, punishment on contravention of regulation management system, systemic-function switching and management system and road command automation statistics and these 5 formants of disposal system, wherein said information handling system is responsible for receiving the information of sending here from each front-end control device and is sent to the corresponding processing unit of remote control center, and the command signal of each unit of receiving remote control center is also given corresponding front-end control device respectively; Described command center system comprises road monitoring equipment such as matrix host computer, monitor, DVR, grand keyboard, finishes the road monitoring function of traditional sense; Described punishment on contravention of regulation management system is provided with that motor vehicle makes a dash across the red light and overspeed violation punishment system, is used for collection, affirmation and punishment that vehicle is pressed items violating the regulations such as yellow existing, violating the regulations tune and parking offense; Described systemic-function is switched and management system is used for total system is carried out unified coordination and management; Described road command automation statistics and disposal system are used for the useful information of each system acquisition is carried out unified management, and adopt means such as Theory of Automatic Control and pool, carry out various self-adaptations and vehicle security administration in the road command automation.
Electronic police system of the present invention can be provided with the external interface assembly, comprises software interface and hardware interface.Described software interface is used to road traffic commander's other system that database level and application layer interface are provided, described hardware interface comprises multiple interfaces unit such as Ethernet interface, RS485/422, standard serial port and I/O IO interface, is used for same signal controlling machine, road LED display screen etc. and connects.
Claims (10)
1. a traffic monitoring method comprises the following steps:
1) passes through the environmental information that the ambient condition sensor acquisition influences the video camera running parameter;
2) determine the due running parameter of video camera by front-end control device according to environmental information, and the running parameter of video camera is set and regulated by front-end control device;
3) by video camera picked-up road vehicle traffic image, handle and compression, deliver to remote control center through front-end control device;
4) by being embedded in the road traffic status information of the ground induction coil collection all directions on the road, after front-end control device is handled, generate the road traffic status data of all directions, deliver to remote control center;
5) by the switching of front-end control device control traffic lights duty, front-end control device is judged the road traffic state of all directions according to the road traffic status data, under all directions road traffic situation in good condition, carry out the switching of traffic lights duty according to default normal mode, under the situation that the road traffic state of one or more directions obviously blocks up than other directions, adjust the time interval that traffic lights switch according to default adjustment modes, and prolong the bright relative time of direction green light that blocks up.
2. traffic monitoring method as claimed in claim 1 is characterized in that:
In step 1), described ambient condition sensor is one or more optical sensors and one or more humidity sensor, be used to gather ambient light intensity and humidity information, its transient data that obtains is carried out various Error processing, form stable data, used error processing method is curve compensation and/or mean value method;
In step 2) in, under certain ambient condition, corresponding relation according to video camera running parameter and ambient condition, carry out the data analysis and the calculating of video camera running parameter, the result who calculates compares with the video camera work at present parameter from video camera, under both inconsistent situations, generate described setting and regulating command to the video camera running parameter, send video camera to, described setting and regulating command to video camera comprises: to the setting command of the mode of operation of video camera, switching command to the video camera mode of operation, to the setting command of camera aperture and/or to the switching command of camera aperture;
In step 3), described front-end control device carries out image distortion correction, smothing filtering noise reduction process, figure image intensifying and sharpening processing, edge detection processing to video image information, generates high fidelity visual information;
In step 4), the real-time road traffic status information that ground induction coil is sent here is carried out Error processing, form stable data, used error processing method is curve compensation and/or mean value method;
In step 5), rule of thumb, the concrete situation of test and all directions is determined traffic lights switch mode under the normal condition and the traffic lights switch mode under the various abnormal conditions, form corresponding relation chart, corresponding relation curve and/or the empirical Calculation formula of traffic lights switch mode and traffic congestion situation, and deposit these corresponding relations in front-end control device, under the situation that occurs blocking up, calculate or read corresponding switch mode by this corresponding relation;
Remote control center carries out unified organization and management to the relevant information of front-end collection, realizes supervision, scheduling, commander and control to traffic in the zone.
3. traffic monitoring method as claimed in claim 1, it is characterized in that: according to the high fidelity visual information after handling, carry out the vehicle analysis and judgement of making a dash across the red light, vehicle on the red light direction and stop line are discerned automatically, the number-plate number that is judged as the vehicle that makes a dash across the red light is discerned, according to when and where information contained in the image information, generation contains the violation record of unlawful practice, violation time, violation place, violation vehicle identification number automatically, delivers to disposal system processing in violation of rules and regulations.
4. an electronic police system comprises front end video component, ground induction coil and front-end control device, wherein:
Described front end video component is provided with some video cameras and some ambient condition sensors, described each video camera be used to absorb counterparty separately to the road vehicle image, generate video image information and deliver to described front-end control device, the corresponding environmental state information of described each ambient condition sensor acquisition is delivered to described front-end control device;
Described ground induction coil is several, and burying underground respectively needs each place of monitoring on the road, is used to respond to the pressure that road vehicle produces, and changes it into traffic behavior analog electrical signal, delivers to described front-end control device;
Described front-end control device is used for described video image information and described traffic behavior analog electrical signal are handled, and generates high fidelity visual information and traffic behavior statistics, delivers to remote control center; Described environmental state information is carried out statistical treatment, form stable ambient condition data, and determine the running parameter of video camera under the current environment state to generate setting or regulating command to the video camera running parameter according to the corresponding relation of setting, send to camera control unit.
5. a kind of electronic police system as claimed in claim 4 is characterized in that described front end processing device comprises front-end processor, and described front-end processor comprises information receiving unit, information process unit and information transmission unit, wherein:
Described information receiving unit is communicated by letter with ground induction coil with described front end video component, receives the video image information of described front end video component and the analog electrical signal of ground induction coil, is sent to described information process unit;
Described information process unit comprises red light manager, vehicle monitoring device, Video Controller and front-end processor, and described red light manager is provided with the traffic light signal acquisition module, gathers the duty switching signal of traffic lights, delivers to front-end processor; Described wagon detector receives the described analog electrical signal from ground induction coil, generates real-time surface vehicle traffic status data, delivers to front-end processor; Described Video Controller is according to described environmental state information, calculate the optimum working parameter of video camera under this ambient condition, generate described setting or regulating command to the video camera running parameter, send to video camera, and receive the video camera work order that described front-end processor is sent, change into the command signal that video camera can be discerned, send to video camera; Described front-end processor is sent described video camera work order when receiving the red light working signal, and receive described video image information, carry out distortion rectification and noise reduction process, generate high fidelity visual information, whether analysis and judgement has vehicles running red light, and the image information that will have vehicles running red light deposits its image data base violating the regulations in, receive described real-time surface vehicle traffic status data, carry out statistical study, generate stable surface vehicle traffic status data, deposit its traffic state data storehouse in;
Described information transmission unit is used for remote control center communication.
6. a kind of electronic police system as claimed in claim 5, it is characterized in that described red light manager also is provided with traffic lights switching controls module, described front-end processor is analyzed described surface vehicle traffic status data, judge the vehicle congestion of all directions, and the congestion information of all directions delivered to described traffic lights switching controls module, described traffic lights switching controls module is under all directions road traffic situation in good condition, regularly generate the switching command of traffic lights duty according to default normal mode, deliver to traffic-light control device, under the situation that certain direction road traffic state obviously blocks up than other directions, generate the traffic lights switching command according to default adjustment modes, deliver to traffic-light control device.
7. as claim 4,5 or 6 described a kind of electronic police systems, it is characterized in that described video camera adopts the one spherical camera, and be furnished with additional light source.
8. a kind of electronic police system as claimed in claim 7, it is characterized in that data collector of the common connection of described each ambient condition sensor, gather environmental state information in real time and send data acquisition module to, described data acquisition module carries out data processing to the real time environment information from described each sensor, generate stable ambient condition preprocessed data, described Video Controller is analyzed and computing described ambient condition preprocessed data according to the mode of setting, draw the due running parameter of video camera under this ambient condition, generate described setting and regulating command, send video camera to video camera.
9. a kind of electronic police system as claimed in claim 8, it is characterized in that described regulating control command to video camera comprises the setting command to the mode of operation of video camera, switching command to the video camera mode of operation, to the setting command of camera aperture and/or to the switching command of camera aperture, described ambient condition sensor comprises one or more optical sensors at least, the environmental state information of its collection is the light intensity heat transfer agent, also comprise one or more humidity sensors, the environmental state information of its collection is the air humidity heat transfer agent, described data acquisition module adopts single-chip microcomputer, described single-chip microcomputer is provided with A/D conversion circuit, be used for the environmental state information that described ambient condition sensor is sent here with the analog electrical signal form is carried out the digitizing conversion, described single-chip microcomputer carries out Error processing and data statistics to described digitizing ambient condition data, obtain accurately stable ambient condition preprocessed data, be provided with the Communications Processor Module that is used for intercoming mutually between described data acquisition module and the described Video Controller, these communication processing modules constitute the part of described information receiving unit, described Communications Processor Module is made up of the two RAM in parallel port, described data acquisition module deposits the ambient condition preprocessed data of its generation in parallel port two RAM, and to described Video Controller transmission handshaking information, after described Video Controller is received described handshaking information, in two RAM, take corresponding data by the parallel port mode away, described Video Controller adopts general ARM7 processor, under the support of analysis software, to from the ambient condition preprocessed data of described data acquisition module or to analyzing computing from the ambient condition preprocessed data of described data acquisition module with from the camera distance data of camera automatic focusing system, generate the optimum working parameter of video camera under the current environment state, and with these parameters with comparing from the video camera work at present parameter of video camera, under both inconsistent situations, generate described setting and regulating command to the video camera running parameter, send video camera to, described Video Controller is with adopting the communication of RE485 communication protocol between the video camera, Communications Processor Module by Video Controller is transferred to video camera to the steering order to video camera, and obtains video camera work on hand due various parameters of institute and camera distance.
10. as claim 4,5 or 6 described a kind of electronic police systems, it is characterized in that described information transmission unit adopts switch, or fiber optic, or switch and fiber optic, connect remote control center by these switches and/or fiber optic, communicate by letter with remote control center, the information that described information process unit is sent passes to described remote control center, the instruction that remote control center is sent passes to described information process unit, described remote control center is with some front-end control device communications, information to the front-end control device collection is carried out unified organization and management, described remote control center comprises information handling system, command center system, the punishment on contravention of regulation management system, systemic-function switching and management system and road command automation statistics and these 5 formants of disposal system, wherein said information handling system is responsible for receiving the information of sending here from each front-end control device and is sent to the corresponding processing unit of remote control center, and the command signal of each unit of receiving remote control center is also given corresponding front-end control device respectively; Described command center system comprises matrix host computer, monitor, DVR, grand keyboard road monitoring equipment, finishes the road monitoring function of traditional sense; Described punishment on contravention of regulation management system is provided with that motor vehicle makes a dash across the red light and overspeed violation punishment system, is used for collection, affirmation and punishment that vehicle is pressed yellow line, tune violating the regulations and parking offense item violating the regulations; Described systemic-function is switched and management system is used for total system is carried out unified coordination and management; Described road command automation statistics and disposal system are used for the useful information of each system acquisition is carried out unified management, and adopt Theory of Automatic Control and the pool section of learning to do, and carry out various self-adaptations and vehicle security administration in the road command automation.
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| CN101261768B (en) * | 2007-03-23 | 2010-06-09 | 天津市国腾公路咨询监理有限公司 | Traffic survey data collection and analysis application system for road network and its working method |
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