CN109994059A - A kind of electronic information presentation device - Google Patents
A kind of electronic information presentation device Download PDFInfo
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- CN109994059A CN109994059A CN201810004822.5A CN201810004822A CN109994059A CN 109994059 A CN109994059 A CN 109994059A CN 201810004822 A CN201810004822 A CN 201810004822A CN 109994059 A CN109994059 A CN 109994059A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
- G09F27/007—Displays with power supply provided by solar cells or photocells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0407—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the identity of one or more communicating identities is hidden
- H04L63/0421—Anonymous communication, i.e. the party's identifiers are hidden from the other party or parties, e.g. using an anonymizer
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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
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention belongs to information to put on display technical field, disclose a kind of electronic information presentation device, be provided with host, host upper end is equipped with electric telescopic rod；The electric telescopic rod is connected with solar panels；Signal receiving device, sender unit are installed on the right side of the host；The host front end interlocking has display screen and touch tablet；Speech player built in the host；The host lower end is fixed with pedestal by setscrew.The invention mentality of designing is clear, can receive external signal, checks the information such as weather, road conditions according to passerby's demand for passerby, can also be to city broadcast transmission emergency；Simultaneously using solar energy as power supply, no pollution to the environment improves energy utilization rate.
Description
Technical field
The invention belongs to information exhibition technical field more particularly to a kind of electronic information presentation devices.
Background technique
Currently, large-scale display screen is usually provided with, so that people are more preferable in areas such as the intersections in many places
View real-time weather road conditions etc., bring very big convenience to the trip of people.But existing information presentation device expends
A large amount of electric power causes very big energy waste；And often function is relatively simple for presentation device, cannot according to the demand of people come
Broadcast information is not well positioned to meet demand of today.
When monitoring area distribution area increases in city, when monitoring area type increases, manual analysis is more difficult to from quantity
It is accurate in monitor video huge, place is numerous, the time is extremely long, in time, efficiently identify wherein geography information.
Position anonymity algorithm is the most common algorithm of current position secret protection.Anonymous server uploads user accurate
Position is replaced with an anonymous region comprising k user, and LBS provider returns to a query results according to this region,
Optimal result is therefrom found out according to the exact position of user by anonymous server again, returns to user.The size in anonymous region is determined
The height of service quality and the size of communication overhead are determined.Under the premise of guaranteeing that location privacy is not revealed, anonymous region is smaller
Better.
In conclusion problem of the existing technology is: existing information presentation device expends a large amount of electric power, causes very
Big energy waste；And presentation device has a single function, and is not able to satisfy the more demands of user.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of electronic information presentation devices.
The invention is realized in this way a kind of electronic information presentation device is provided with host, host upper end is equipped with electronic
Telescopic rod；
The electric telescopic rod is connected with solar panels；
Signal receiving device, sender unit are installed on the right side of the host；
The host front end interlocking has display screen and touch tablet；
Speech player built in the host；
The host lower end is fixed with pedestal by setscrew.
Described solar panels one end is rotatably mounted on host, and the other end is hinged by hinge and electric telescopic rod.
WIFI device built in the signal connection device and sender unit.
The touch tablet is connected with speech recognition device, and speech recognition device is connected with talk button.
The electronic information presentation device also passes through image processing system and client carries out the interaction of consultation information；Image
The geographical acquisition methods of processing system include: the monitoring camera using distributed arrangement, obtain monitor video signal in real time, are led to
Communication network transmission is crossed to monitoring center, monitor video is parsed using image recognition algorithm, to obtain monitored object
Parse information；
According to the shooting time of monitor video and shooting geography information, using the parsing information of monitored object, to monitoring
Geography information in video is identified；
Determine that geography information alternatively puts sum, spatial distribution and each alternative point capacity；
Road length is calculated, and constructs the road net model towards evacuation analysis by object of planned road network；
Determining geography information alternatively puts layout optimization.
Further, the method for the monitor video acquisition signal includes:
Firstly, the adjacent two frames picture in monitor video, by comparing corresponding region in picture, to notable difference part
Quantity identification and position mark are carried out, and using notable difference part as the different location detected in video；It is wherein obvious
Difference section is part of the otherness in adjacent two frames picture more than threshold value；
Secondly, the neural network algorithm crossed using the sample training through manually marking, utilizes the prison in monitor video signal
The quantitative relation between the region area of object and the actual number of monitored object is controlled, the type and quantity of monitored object are carried out
More accurate Computer Automatic Recognition；
Finally, forming the figure of pre-search geographical location object according to the shooting time of monitor video and shooting geography information
Picture, and monitored object and pre- solid plate are compared, and the image in monitor video is known according to comparing result
Not.
Further, the alternative point methods of determining geography information are as follows:
Firstly, the sum alternatively put is calculated by formula (1)；
N=AR/2πrc (1)
Wherein: N is the estimated sum alternatively put；ARFor the area in entire siteselecting planning region；rcIt is expected for single alternative point
Maximum service radius；
Then, the spatial distribution alternatively put calculates；
Wide open space in entire Site Selection region alternately point is selected, and to the alternative point chosen, using formula
(2) standards of grading are calculated, carry out Priority Order from high to low according to score, score is higher, and priority is higher, determines each standby
The priority of reconnaissance；
Wherein: Q indicates the comprehensive score each alternatively put, and α is weight, fiFor each individual event score alternatively put, fi(i=
1,2 ..., 7) refer specifically to each following feature alternatively put: spatial distribution, type, purposes, easily transformation property, using area, build
Build amount of substance, exploitability；
Finally, calculating each alternative point capacity according to formula (3)；
C=As/Ap；(3)
Wherein: C indicates single alternative point capacity；AsIndicate the area individually alternatively put；ApIt indicates needed for single image point
Area.
Described image processing system and the exchange method of client progress consultation information include:
User sends request:
User sends location based service request to anonymous server, and service request includes the identity of user, user
Geographical coordinate, at the time of send request, the privacy requirements of the content of request and user；Privacy requirements refer to that user takes anonymity
The requirement of user's number in the anonymous section that business device generates；
Anonymous server initialization；
Generate initial anonymous region；Anonymous server receives user's request, generates initial anonymous region, counts current time
The number of all request users in initial anonymity section；
Predict the successful probability of user anonymity；
Query result is returned to, user requests R' to anonymous server by treated, is sent to and provides the service of location-based service
Device；Anonymous server obtains query result set from the server for providing location-based service；Anonymous server is according to the true of user
The query result of most suitable user is picked out in position from query result set, and returns result to the user of request service.
Further, anonymous server, which initializes, includes:
The first step, anonymous server generate a file, store the coordinate of the central point of every road in road network, in
Heart coordinate is a two-dimensional coordinate, the as transverse and longitudinal coordinate of central point, every road herein be defined as on this section in addition to
Outside the crossing at both ends, the stretch without other crossings；
Second step calculates crossing probability transfer matrix；Probability transfer matrix is as follows:
Wherein, M (v) indicates the probability transfer matrix of crossing v in road network, and subscript 1 to n indicates to contain in road network
The road number of identical crossing v, pi,jIndicate the probability that the user in road j in road network moves to road i, pi,j=
Ni,j/Nj, Ni,jIndicate the number of users moved from road j to road i, NjIndicate the number of users on road j；
Third step passes through the equal of estimation user velocity variation according to a large amount of historical data in anonymous server is stored in
Value and variance, fitting user velocity variation；The sample of fitting user velocity variation at least chooses 10000；Velocity variations refer to
Difference of the user in adjacent moment speed.
Further, the prediction successful probability of user anonymity specifically includes:
1) whether the initial anonymous section of anonymous server judgement meets the privacy requirements of user, if satisfied, the tenth step is executed,
Otherwise, it executes 2)；Whether the initial anonymous section of anonymous server judgement meets the process of privacy of user demand are as follows: anonymous server
The request received according to current time calculates all user's numbers that request is sent in initial anonymous section, if all requests
The number of user is greater than the privacy requirements of user, then initial anonymous section meets the privacy requirements of user, otherwise, initial anonymity road
Section is unsatisfactory for the privacy requirements of user；
2), will initial anonymous section, the case where being connected by road in road network expansion becomes a new section, this is new
Twice of the section that the difference in section and initial anonymous section is equal to maximum speed value is all expanded, and the side in new section is expanded into
Method: using the both ends crossing in initial anonymous section as starting point, respectively with the distance of maximum speed value size to directly connected
Road is expanded, and all sections for meeting above-mentioned condition are all expanded, and the maximum speed of user is equal to road in road network
Speed limit in road network on road, under the constraint of traffic rules, the velocity amplitude of user is no more than the upper limit value；
3), anonymous server searches current time without request from a large amount of historical data, but previous moment has request, and
User is constituted alternative user collection by the user in new section, and the user concentrated due to alternative user is at current time without asking
It asks, anonymous server can not judge the position at these user's current times, but alternative user is located at initial anonymity at current time
On section；
4), anonymous server reads the transfer matrix at crossing in initial anonymous section both ends crossing and rear expansion road, calculates
Specific probability value out；Probability is equal to the probability that alternative user selects a paths；
5), anonymous server calculates the speed of alternative user previous moment according to the coordinate record of alternative user historical juncture
Degree；According to coordinate record, anonymous server calculates the distance of user movement, just obtains user's divided by the corresponding time with distance
Speed；
6), anonymous server calculates each alternative user and enters and stay in initial according to normpdf
Probability on anonymous section；The mean value and variance of probability density function are respectively equal to pass through what the user velocity that fitting obtains changed
Mean value and variance stay on path and alternative user on initial anonymous section each alternative user according to alternative user
The speed at one moment obtains a speed variation, and each path all corresponds to a speed variation, indicates alternative user
Under the premise of selecting the paths, in the range and if only if current alternative user velocity variations, alternative user be can enter
Initial anonymity section；
7), anonymous server calculates current time initially in anonymous section, at least the probability containing k-m alternative user,
If probability value is greater than 0.9, the 9th step is executed, otherwise, is executed 8), wherein k indicates privacy of user demand, and m indicates initial anonymous
The number of user is requested in section；
8), position of the anonymous server according to initial anonymous section in road network, random selection one with initially hide
Initial anonymous section is added in the road that name section is directly connected to, and constitutes new anonymous section, and anonymous server will initial anonymous road
1) the new anonymous section thus Duan Gengxin, executes；
9), initial anonymous section is divided into two cross-talk sections by anonymous server, and sub- road where taking family is hidden as new
Name section, and judge whether new anonymous section meets the needs of users, if satisfied, then repeating the 9th step until being unsatisfactory for；
If not satisfied, then executing the tenth step；If initial anonymity section does not meet privacy of user demand, but the new anonymity after expanding
Section meets the privacy requirement of user, then the section being newly added is divided into two sections, chooses one section adjacent with upper a road section
Road forms new anonymous section；Anonymous server checks whether this section meets the privacy requirements of user, if it is satisfied, then
It continues to execute initial anonymous section and does not meet step in privacy of user demand；If conditions are not met, then executing 10)；
10), the anonymous server anonymous section that original initial anonymous section is final as user；
11), user's request R is converted to new request R'=(u', c, r) by anonymous server, and wherein R' indicates anonymous clothes
It is engaged in device treated user request, u' and c respectively indicate the false identity and anonymous section that anonymous server is generated for user, r table
Show the request content of user.
Advantages of the present invention and good effect are as follows: the present invention receives external signal, touch tablet by signal receiving device
Setting the information such as weather, road conditions are checked according to passerby's demand for passerby；Speech recognition device can be used to input letter simultaneously
Breath, is conducive to the use of special population；Sender unit can be to city broadcast transmission emergency；Using solar panels as
Power supply, no pollution to the environment improve energy utilization rate.
The present invention can sufficiently meet the actual demand of multiple types, large scale scene real-time monitoring；It can effectively understand prison
It controls the geographical location information in scene and makes and timely respond to.It is practical.Realize the perfection of existing urban facilities and equipment
In conjunction with the spatial analysis functions of combining geographic information system realize visualization and scientific optimization.With very strong guidance and reality
Trample meaning.The present invention is using practical road network as object, comprehensive the drawbacks of having abandoned using Euclidean distance in space geometry as object
Consider the various factors such as road traffic blocking rate, construct road net model, there is stronger realistic meaning.Institute's coverage area of the present invention
Determination in, the capacity limitation problem comprehensively considered, avoid now a large amount of infinite capacities be made as the not scientific model assumed, protect
Demonstrate,proving can accomplish that capacity does not transfinite, and meets the needs of each user in each coverage area.
Method provided by the invention, proposes any active ues and inactive use at the characteristics of making full use of urban road network
The concept at family predicts the distribution situation of inactive users by the historical position data of analysis anonymous server storage.The present invention
Due to carrying out position anonymity using inactive users and original anonymous region is reduced to anonymous section, can guarantee
Smaller anonymous region is generated under the premise of privacy of user demand, to ensure that service quality, while being decreased communication and being opened
Pin.
Detailed description of the invention
Fig. 1 is electronic information presentation device structural schematic diagram provided in an embodiment of the present invention；
In figure: 1, solar panels；2, electric telescopic rod；3, host；4, signal receiving device；5, sender unit；6,
Display screen；7, touch tablet；8, pedestal；9, speech player；10, talk button.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows.
Structure of the invention is explained in detail with reference to the accompanying drawing.
As shown, electronic information presentation device is provided with host 3,3 upper end of host is equipped with electric telescopic rod 2；
The electric telescopic rod 2 is connected with solar panels 1；
Signal receiving device 4, sender unit 5 are installed on the right side of the host 3；
3 front end of the host interlocking has display screen 6 and touch tablet 7；
Speech player 9 built in the host 3；
3 lower end of host is fixed with pedestal 8 by setscrew.
As the preferred embodiment of the present invention, described 1 one end of solar panels is rotatably mounted on host 3, and the other end passes through
Hinge and electric telescopic rod 2 are hinged.
As the preferred embodiment of the present invention, WIFI device built in the signal connection device 4 and sender unit 5.
As the preferred embodiment of the present invention, the touch tablet 7 is connected with speech recognition device, and speech recognition device is connected with language
Sound button 10.
The electronic information presentation device also passes through image processing system and client carries out the interaction of consultation information；Image
The geographical acquisition methods of processing system include: the monitoring camera using distributed arrangement, obtain monitor video signal in real time, are led to
Communication network transmission is crossed to monitoring center, monitor video is parsed using image recognition algorithm, to obtain monitored object
Parse information；
According to the shooting time of monitor video and shooting geography information, using the parsing information of monitored object, to monitoring
Geography information in video is identified；
Determine that geography information alternatively puts sum, spatial distribution and each alternative point capacity；
Road length is calculated, and constructs the road net model towards evacuation analysis by object of planned road network；
Determining geography information alternatively puts layout optimization.
Further, the method for the monitor video acquisition signal includes:
Firstly, the adjacent two frames picture in monitor video, by comparing corresponding region in picture, to notable difference part
Quantity identification and position mark are carried out, and using notable difference part as the different location detected in video；It is wherein obvious
Difference section is part of the otherness in adjacent two frames picture more than threshold value；
Secondly, the neural network algorithm crossed using the sample training through manually marking, utilizes the prison in monitor video signal
The quantitative relation between the region area of object and the actual number of monitored object is controlled, the type and quantity of monitored object are carried out
More accurate Computer Automatic Recognition；
Finally, forming the figure of pre-search geographical location object according to the shooting time of monitor video and shooting geography information
Picture, and monitored object and pre- solid plate are compared, and the image in monitor video is known according to comparing result
Not.
Further, the alternative point methods of determining geography information are as follows:
Firstly, the sum alternatively put is calculated by formula (1)；
N=AR/2πrc (1)
Wherein: N is the estimated sum alternatively put；ARFor the area in entire siteselecting planning region；rcIt is expected for single alternative point
Maximum service radius；
Then, the spatial distribution alternatively put calculates；
Wide open space in entire Site Selection region alternately point is selected, and to the alternative point chosen, using formula
(2) standards of grading are calculated, carry out Priority Order from high to low according to score, score is higher, and priority is higher, determines each standby
The priority of reconnaissance；
Wherein: Q indicates the comprehensive score each alternatively put, and α is weight, fiFor each individual event score alternatively put, fi(i=
1,2 ..., 7) refer specifically to each following feature alternatively put: spatial distribution, type, purposes, easily transformation property, using area, build
Build amount of substance, exploitability；
Finally, calculating each alternative point capacity according to formula (3)；
C=As/Ap；(3)
Wherein: C indicates single alternative point capacity；AsIndicate the area individually alternatively put；ApIt indicates needed for single image point
Area.
Described image processing system and the exchange method of client progress consultation information include:
User sends request:
User sends location based service request to anonymous server, and service request includes the identity of user, user
Geographical coordinate, at the time of send request, the privacy requirements of the content of request and user；Privacy requirements refer to that user takes anonymity
The requirement of user's number in the anonymous section that business device generates；
Anonymous server initialization；
Generate initial anonymous region；Anonymous server receives user's request, generates initial anonymous region, counts current time
The number of all request users in initial anonymity section；
Predict the successful probability of user anonymity；
Query result is returned to, user requests R' to anonymous server by treated, is sent to and provides the service of location-based service
Device；Anonymous server obtains query result set from the server for providing location-based service；Anonymous server is according to the true of user
The query result of most suitable user is picked out in position from query result set, and returns result to the user of request service.
Further, anonymous server, which initializes, includes:
The first step, anonymous server generate a file, store the coordinate of the central point of every road in road network, in
Heart coordinate is a two-dimensional coordinate, the as transverse and longitudinal coordinate of central point, every road herein be defined as on this section in addition to
Outside the crossing at both ends, the stretch without other crossings；
Second step calculates crossing probability transfer matrix；Probability transfer matrix is as follows:
Wherein, M (v) indicates the probability transfer matrix of crossing v in road network, and subscript 1 to n indicates to contain in road network
The road number of identical crossing v, pi,jIndicate the probability that the user in road j in road network moves to road i, pi,j=
Ni,j/Nj, Ni,jIndicate the number of users moved from road j to road i, NjIndicate the number of users on road j；
Third step passes through the equal of estimation user velocity variation according to a large amount of historical data in anonymous server is stored in
Value and variance, fitting user velocity variation；The sample of fitting user velocity variation at least chooses 10000；Velocity variations refer to
Difference of the user in adjacent moment speed.
Further, the prediction successful probability of user anonymity specifically includes:
1) whether the initial anonymous section of anonymous server judgement meets the privacy requirements of user, if satisfied, the tenth step is executed,
Otherwise, it executes 2)；Whether the initial anonymous section of anonymous server judgement meets the process of privacy of user demand are as follows: anonymous server
The request received according to current time calculates all user's numbers that request is sent in initial anonymous section, if all requests
The number of user is greater than the privacy requirements of user, then initial anonymous section meets the privacy requirements of user, otherwise, initial anonymity road
Section is unsatisfactory for the privacy requirements of user；
2), will initial anonymous section, the case where being connected by road in road network expansion becomes a new section, this is new
Twice of the section that the difference in section and initial anonymous section is equal to maximum speed value is all expanded, and the side in new section is expanded into
Method: using the both ends crossing in initial anonymous section as starting point, respectively with the distance of maximum speed value size to directly connected
Road is expanded, and all sections for meeting above-mentioned condition are all expanded, and the maximum speed of user is equal to road in road network
Speed limit in road network on road, under the constraint of traffic rules, the velocity amplitude of user is no more than the upper limit value；
3), anonymous server searches current time without request from a large amount of historical data, but previous moment has request, and
User is constituted alternative user collection by the user in new section, and the user concentrated due to alternative user is at current time without asking
It asks, anonymous server can not judge the position at these user's current times, but alternative user is located at initial anonymity at current time
On section；
4), anonymous server reads the transfer matrix at crossing in initial anonymous section both ends crossing and rear expansion road, calculates
Specific probability value out；Probability is equal to the probability that alternative user selects a paths；
5), anonymous server calculates the speed of alternative user previous moment according to the coordinate record of alternative user historical juncture
Degree；According to coordinate record, anonymous server calculates the distance of user movement, just obtains user's divided by the corresponding time with distance
Speed；
6), anonymous server calculates each alternative user and enters and stay in initial according to normpdf
Probability on anonymous section；The mean value and variance of probability density function are respectively equal to pass through what the user velocity that fitting obtains changed
Mean value and variance stay on path and alternative user on initial anonymous section each alternative user according to alternative user
The speed at one moment obtains a speed variation, and each path all corresponds to a speed variation, indicates alternative user
Under the premise of selecting the paths, in the range and if only if current alternative user velocity variations, alternative user be can enter
Initial anonymity section；
7), anonymous server calculates current time initially in anonymous section, at least the probability containing k-m alternative user,
If probability value is greater than 0.9, the 9th step is executed, otherwise, is executed 8), wherein k indicates privacy of user demand, and m indicates initial anonymous
The number of user is requested in section；
8), position of the anonymous server according to initial anonymous section in road network, random selection one with initially hide
Initial anonymous section is added in the road that name section is directly connected to, and constitutes new anonymous section, and anonymous server will initial anonymous road
1) the new anonymous section thus Duan Gengxin, executes；
9), initial anonymous section is divided into two cross-talk sections by anonymous server, and sub- road where taking family is hidden as new
Name section, and judge whether new anonymous section meets the needs of users, if satisfied, then repeating the 9th step until being unsatisfactory for；
If not satisfied, then executing the tenth step；If initial anonymity section does not meet privacy of user demand, but the new anonymity after expanding
Section meets the privacy requirement of user, then the section being newly added is divided into two sections, chooses one section adjacent with upper a road section
Road forms new anonymous section；Anonymous server checks whether this section meets the privacy requirements of user, if it is satisfied, then
It continues to execute initial anonymous section and does not meet step in privacy of user demand；If conditions are not met, then executing 10)；
10), the anonymous server anonymous section that original initial anonymous section is final as user；
11), user's request R is converted to new request R'=(u', c, r) by anonymous server, and wherein R' indicates anonymous clothes
It is engaged in device treated user request, u' and c respectively indicate the false identity and anonymous section that anonymous server is generated for user, r table
Show the request content of user.
The working principle of the invention: after the pedestal 8 of the equipment is fixed, solar panels 1 can automatic absorption light source, with
Sun angle variation, host 3 control electric telescopic rod 2, and electric telescopic rod 2 increases corresponding angle, so that too
Positive energy plate 1 guarantees that most sufficient light source utilizes；Signal is received by signal receiving device 4, display screen 6 can show phase
The information answered, people can also be manipulated by touch tablet 7 according to their own needs, or pinned talk button 10 and passed through language
Sound identifier voice inputs information, the required information of people is shown on display screen 6, sender unit 5 can be urgent
When situation, broadcast is externally issued.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (6)
1. a kind of electronic information presentation device, which is characterized in that the electronic information presentation device is provided with host, host upper end
Electric telescopic rod is installed；
The electric telescopic rod is connected with solar panels；
Signal receiving device, sender unit are installed on the right side of the host；
The host front end interlocking has display screen and touch tablet；
Speech player built in the host；
The host lower end is fixed with pedestal by setscrew；
Described solar panels one end is rotatably mounted on host, and the other end is hinged by hinge and electric telescopic rod；
WIFI device built in the signal connection device and sender unit；
The touch tablet is connected with speech recognition device, and speech recognition device is connected with talk button；
The electronic information presentation device also passes through image processing system and client carries out the interaction of consultation information；Image procossing
The geographical acquisition methods of system include: the monitoring camera using distributed arrangement, obtain monitor video signal in real time, by logical
Communication network is transmitted to monitoring center, is parsed using image recognition algorithm to monitor video, to obtain the parsing of monitored object
Information；
According to the shooting time of monitor video and shooting geography information, using the parsing information of monitored object, to monitor video
In geography information identified；
Determine that geography information alternatively puts sum, spatial distribution and each alternative point capacity；
Road length is calculated, and constructs the road net model towards evacuation analysis by object of planned road network；
Determining geography information alternatively puts layout optimization.
2. electronic information presentation device as described in claim 1, which is characterized in that
The method that the monitor video obtains signal includes:
Firstly, the adjacent two frames picture in monitor video carries out notable difference part by comparing corresponding region in picture
Quantity identification and position mark, and using notable difference part as the different location detected in video；Wherein notable difference
Part is part of the otherness in adjacent two frames picture more than threshold value；
Secondly, the neural network algorithm crossed using the sample training through manually marking, utilizes the monitoring pair in monitor video signal
Quantitative relation between the region area of elephant and the actual number of monitored object carries out more the type and quantity of monitored object
Accurate Computer Automatic Recognition；
Finally, the image of pre-search geographical location object is formed according to the shooting time of monitor video and shooting geography information,
And monitored object and pre- solid plate are compared, and the image in monitor video is identified according to comparing result.
3. electronic information presentation device as described in claim 1, which is characterized in that
The alternative point methods of determining geography information are as follows:
Firstly, the sum alternatively put is calculated by formula (1)；
N=AR/2πrc (1)
Wherein: N is the estimated sum alternatively put；ARFor the area in entire siteselecting planning region；rcIt is expected maximum for single alternative point
Service radius；
Then, the spatial distribution alternatively put calculates；
Wide open space in entire Site Selection region alternately point is selected, and to the alternative point chosen, is counted using formula (2)
Standards of grading are calculated, carry out Priority Order from high to low according to score, score is higher, and priority is higher, what determination was each alternatively put
Priority；
Wherein: Q indicates the comprehensive score each alternatively put, and α is weight, fiFor each individual event score alternatively put, fi(i=1,
2 ..., 7) refer specifically to each following feature alternatively put: spatial distribution, type, purposes, easily transformation property, using area, building
Amount of substance, exploitability；
Finally, calculating each alternative point capacity according to formula (3)；
C=As/Ap； (3)
Wherein: C indicates single alternative point capacity；AsIndicate the area individually alternatively put；ApFace needed for indicating single image point
Product.
4. electronic information presentation device as described in claim 1, which is characterized in that described image processing system and client carry out
The exchange method report goods of consultation information:
User sends request:
User sends location based service request to anonymous server, and service request includes the geography of the identity of user, user
Coordinate, at the time of send request, the privacy requirements of the content of request and user；Privacy requirements refer to user to anonymous server
The requirement of user's number in the anonymous section of generation；
Anonymous server initialization；
Generate initial anonymous region；Anonymous server receives user's request, generates initial anonymous region, and statistics current time is initial
The number of all request users in anonymous section；
Predict the successful probability of user anonymity；
Query result is returned to, user requests R' to anonymous server by treated, is sent to and provides the server of location-based service；It hides
Name server obtains query result set from the server for providing location-based service；Anonymous server according to the actual position of user from
The query result of most suitable user is picked out in query result set, and returns result to the user of request service.
5. electronic information presentation device as described in claim 1, which is characterized in that anonymous server, which initializes, includes:
The first step, anonymous server generate a file, store the coordinate of the central point of every road in road network, and center is sat
Mark is a two-dimensional coordinate, the as transverse and longitudinal coordinate of central point, and every road herein is defined as on this section in addition to both ends
Crossing outside, the stretch without other crossings；
Second step calculates crossing probability transfer matrix；Probability transfer matrix is as follows:
Wherein, M (v) indicates the probability transfer matrix of crossing v in road network, and subscript 1 to n indicates in road network containing identical
Crossing v road number, pi,jIndicate the probability that the user in road j in road network moves to road i, pi,j=Ni,j/
Nj, Ni,jIndicate the number of users moved from road j to road i, NjIndicate the number of users on road j；
Third step, according to being stored in a large amount of historical data in anonymous server, by the mean value of estimation user velocity variation and
Variance, fitting user velocity variation；The sample of fitting user velocity variation at least chooses 10000；Velocity variations refer to user
In the difference of adjacent moment speed.
6. electronic information presentation device as described in claim 1, which is characterized in that the prediction successful probability of user anonymity specifically wraps
It includes:
1) whether the initial anonymous section of anonymous server judgement meets the privacy requirements of user, if satisfied, the tenth step is executed, it is no
Then, it executes 2)；Whether the initial anonymous section of anonymous server judgement meets the process of privacy of user demand are as follows: anonymous server root
The request received according to current time calculates all user's numbers that request is sent in initial anonymous section, if all requests are used
The number at family is greater than the privacy requirements of user, then initial anonymous section meets the privacy requirements of user, otherwise, initial anonymity section
It is unsatisfactory for the privacy requirements of user；
2), will initial anonymous section, the case where being connected by road in road network expansion becomes a new section, the new section
Twice of section for being equal to maximum speed value with the difference in initial anonymous section is all expanded, the method for expanding into new section:
Using the both ends crossing in initial anonymous section as starting point, respectively with the distance of maximum speed value size to directly connected road
It is expanded, all sections for meeting above-mentioned condition are all expanded, and the maximum speed of user is equal to road network in road network
Speed limit in network on road, under the constraint of traffic rules, the velocity amplitude of user is no more than the upper limit value；
3), anonymous server searches current time without request from a large amount of historical data, but previous moment has request, and is located at
User is constituted alternative user collection by the user in new section, and the user concentrated due to alternative user, without request, is hidden at current time
Name server can not judge the position at these user's current times, but alternative user is located at initial anonymous section at current time
On；
4), anonymous server reads the transfer matrix at crossing in initial anonymous section both ends crossing and rear expansion road, calculates tool
The probability value of body；Probability is equal to the probability that alternative user selects a paths；
5), anonymous server calculates the speed of alternative user previous moment according to the coordinate record of alternative user historical juncture；Root
According to coordinate record, anonymous server calculates the distance of user movement, just obtains the speed of user divided by the corresponding time with distance；
6), anonymous server calculates each alternative user and enters and stay in initial anonymity according to normpdf
Probability on section；The mean value and variance of probability density function are respectively equal to pass through the mean value for the user velocity variation that fitting obtains
And variance stays on the path on initial anonymous section and alternative user for the moment each alternative user according to alternative user
The speed at quarter obtains a speed variation, and each path all corresponds to a speed variation, indicates that alternative user is selecting
Under the premise of selecting the paths, in the range and if only if current alternative user velocity variations, alternative user be can enter initially
Anonymous section；
7), anonymous server calculates current time initially in anonymous section, at least the probability containing k-m alternative user, if generally
Rate value is greater than 0.9, then executes the 9th step, otherwise, executes 8), wherein k indicates privacy of user demand, and m indicates initial anonymous section
The number of middle request user；
8), position of the anonymous server according to initial anonymous section in road network, random selection one and initial anonymous road
Initial anonymous section is added in the road that is directly connected to of section, constitutes new anonymous section, anonymous server will initial anonymous section more
1) newly new anonymous section thus, executes；
9), initial anonymous section is divided into two cross-talk sections by anonymous server, and sub- road is as new anonymous road where taking family
Section, and judge whether new anonymous section meets the needs of users, if satisfied, then repeating the 9th step until being unsatisfactory for；If no
Meet, then executes the tenth step；New anonymous section if initial anonymity section does not meet privacy of user demand, but after expanding
The privacy requirement of user is met, then the section being newly added is divided into two sections, chooses a Duan Daolu adjacent with upper a road section,
The new anonymous section of composition；Anonymous server checks whether this section meets the privacy requirements of user, if it is satisfied, then continuing to hold
The initial anonymous section of row does not meet the step in privacy of user demand；If conditions are not met, then executing 10)；
10), the anonymous server anonymous section that original initial anonymous section is final as user；
11), user's request R is converted to new request R'=(u', c, r) by anonymous server, and wherein R' indicates anonymous server
User's request that treated, u' and c respectively indicate the false identity and anonymous section that anonymous server is generated for user, and r indicates to use
The request content at family.
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