Traffic condition display system and related display method

Abstract

To provide a traffic condition display system and a related display method that can comprehensively provide real-time traffic condition and related data information.SOLUTION: A traffic condition display system for displaying a traffic condition display image is disclosed. The traffic condition display image includes map information including a plurality of intersection traffic conditions. Each intersection traffic condition of the plurality of intersection traffic conditions includes a signal condition display image configured to display a signal condition for each sub-intersection of the intersection and a traffic direction switch vector display image configured to display an outflow table and an inflow table for the intersection according to vehicle traffic data.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a traffic condition display system and a related display method, and more specifically, to a traffic condition display system capable of displaying traffic conditions and a related display method.

Background Art

[0002] With the increase in the number of vehicles on the road, for example, a traffic management unit is required to thoroughly manage the traffic conditions of the entire city by providing data on the number of vehicles, average vehicle speed, or signal status at road intersections. However, with the development of cities, the number of vehicles and traffic complexity in large cities are increasing. Conventional traffic condition display systems can only provide real-time traffic conditions, but cannot provide comprehensive traffic condition information for data statistics or traffic condition analysis. Therefore, improvements to the conventional technology are necessary.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present invention provides a traffic condition display system and a related display method capable of comprehensively providing real-time traffic conditions and related data information.

Means for Solving the Problems

[0004] An embodiment of the present invention discloses a traffic condition display system for displaying a traffic condition display image. The traffic condition display image includes map information including a plurality of intersection traffic conditions, and each intersection traffic condition of the plurality of intersection traffic conditions includes a signal status display image configured to display the signal status of each sub-intersection of the intersection, and a traffic direction conversion vector display image configured to display an outflow table and an inflow table of the intersection according to vehicle traffic data.

[0005] Another embodiment of the present invention discloses a traffic condition display method for a traffic condition display system, the traffic condition display method comprising displaying traffic information for multiple intersections, displaying the signal status of each sub-intersection of an intersection in a signal condition display image, and displaying an exit table and an inbound table of an intersection using a traffic direction change vector display image according to vehicle traffic data. [Brief explanation of the drawing]

[0006] [Figure 1] This is a schematic diagram of a traffic condition display image according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of a signal status display image and vehicle memory information of intersection traffic conditions according to an embodiment of the present invention. [Figure 3] This is a schematic diagram of the numbering of sub-intersections according to an embodiment of the present invention. [Figure 4] This is a schematic diagram of a traffic turn vector display image of intersection traffic conditions according to an embodiment of the present invention. [Figure 5] This is a schematic diagram of a traffic condition display system according to an embodiment of the present invention. [Modes for carrying out the invention]

[0007] Refer to Figure 1, a schematic diagram of a traffic status display picture 10 according to an embodiment of the present invention. The traffic status display picture 10 is displayed by a traffic status display system 1 and includes map information 102 and vehicle speed information 104. The traffic status display system 1 may be a display, memory and a central processing unit (CPU), or an electronic device having computing power to perform corresponding calculations and determine the traffic status display picture 10 so that it is presented on the display. The traffic status display picture 10 may be a user interface for a user that can display different traffic conditions. In an embodiment, the traffic status display picture 10 may be displayed on a web page so that a user can browse the traffic status display picture 10 by visiting the web page. Map information 102 includes multiple intersection traffic states IT_1-IT_4. For example, map information 102 may be map information including city road names, latitude and longitude coordinates, and each of the intersection traffic states IT_1-IT_4 includes signal state display images LS_1-LS_4. Map information 102 of traffic state display image 10 may present the intersection traffic states IT_1-IT_4 for each intersection. For example, intersection traffic state IT_1 may be a crossroad, and all roads in the crossroad may be two-way roads. That is, each sub-intersection may be a one-way or two-way road.

[0008] As shown in Figure 1, the signal status display images LS (including signal status display images LS_1-LS_4) may be used to display the signal status of each sub-intersection of an intersection to indicate vehicles in the intersection. The signal status display images LS include a real-time traffic phase for determining the direction of driving of vehicles in the intersection, and the real-time traffic phase for each intersection is determined from a default traffic phase, which is obtained from a database (not shown). In addition, the traffic status display system 1 may receive real-time status via a transceiver circuit or communication circuit and display the signal status display images LS. For example, by receiving signal status via a transceiver circuit or communication circuit, the traffic status display system 1 may determine the corresponding signal status according to the signal status table TLS so that the signal status may be displayed in the signal status display images LS.

[0009] The signal status table TLS assigns numbers to different combinations of left turn, straight, and right turn signals. More specifically, number N represents no signal, number 0 represents a red light ("stop"), number 1 represents a right turn signal, number 2 represents a straight signal, number 3 represents both a straight and a right turn signal, and so on. Therefore, after the traffic status display system 1 receives the signal numbers of the signal status display images LS_1-LS_4 for each intersection, the corresponding signal status may be obtained from the traffic status table TLS, and the traffic status display image 10 is updated.

[0010] Vehicle speed information 104 is used to display a vehicle speed image between each of the sub-intersections according to each of the intersection traffic conditions. In an embodiment, the vehicle speed image may represent smooth or congested traffic by different colors or different types of lines, for example, on an urban road, with diagonal lines representing vehicle speeds slower than 30 km / h and grid lines representing vehicle speeds faster than 30 km / h, allowing the vehicle speed conditions between each of the intersections to be displayed. Notably, map information 102, signal condition display image LS, or the above vehicle speed information 104 may be received by the traffic condition display system 1 from the internet or a communication circuit and then updated on the traffic condition display image 10.

[0011] In Figure 1, the signal status display image LS_1 of the intersection traffic state IT_1 may represent the real-time traffic phase of the intersection, such as the traffic phase number (number of traffic phases), the length of the traffic phase, the vehicle speed image, the road name, and the signal status. Refer to Figure 2, which is a schematic diagram of the signal status display image LS_1 and vehicle storage information CS_1 of the intersection traffic state IT_1 according to an embodiment of the present invention. In the signal status display image LS_1, the displayed traffic phase number is 1, the traffic phase length is 107 seconds, the east-west road of the intersection is Chung-Cheng East Road, and the north-south road of the intersection is Heng-Nan Road. The vehicle storage information CS_1 is used to determine and display the car storage or car storage state for each intersection according to each of the intersection traffic states, and the car storage or car storage state may be obtained from images of the intersection's surveillance camera. For example, different colors or different types of lines may indicate that the car storage is in an appropriate or inappropriate state. For example, a grid of lines represents an appropriate vehicle memory, and lanes represent an inappropriate vehicle memory, allowing vehicle memory information to be displayed between each intersection. In addition, in Figure 2, the current traffic phase is highlighted by a square frame SF within the intersection traffic state IT_1, and different signal state combinations corresponding to time phases (i.e., default traffic phases) may be displayed at the bottom of the intersection traffic state IT_1, with the default traffic phase being stored in a database. In practice, the user may click on the intersection traffic state IT_1 in Figure 1 to enlarge the signal state display image LS_1 in Figure 2, or the traffic state display system 1 may display detailed signal states in the intersection traffic states IT_1-IT_4 shown in Figure 1. The present invention is not limited to the above embodiments.

[0012] Intersections can be of different types (for example, they may have different numbers of roads or different directions). To identify sub-intersections of an intersection, the traffic condition display image 10 of the present invention defines sub-intersections as having different types. In an embodiment, each sub-intersection of an intersection is assigned to one of the four main directions (i.e., up, down, left, and right) by an increasing number (number). When one of the four main directions has multiple sub-intersections, the remainder of the increasing number corresponding to the main direction is the same when divided by four.

[0013] Refer to Figure 3, a schematic diagram of the numbering of sub-intersections according to an embodiment of the present invention. In the upper left corner of Figure 3, four sub-intersections of intersecting roads are formed by Changcheng East Road (east-west) and Hengnan Road (north-south). The four sub-intersections are assigned numbers increasing from 1 to 4, respectively, starting from the main direction to the right. In the lower left corner of Figure 3, the sub-intersections of the intersection are assigned numbers increasing from 1 to 8, respectively. In the upper right corner of Figure 3, the three sub-intersections of a T-junction are assigned numbers increasing from 1, 3, and 4, respectively. In the lower right corner of Figure 3, the sub-intersections of the intersection are assigned numbers increasing from 1, 2, 3, 4, 6, and 8, respectively. As can be seen from the above embodiments, the remainder when the increasing number above the secondary intersection is divided by 4 is 0, the remainder when the increasing number to the right of the secondary intersection is divided by 4 is 1, the remaining remainder when the increasing number below the secondary intersection is divided by 4 is 2, and the remainder when the increasing number to the left of the secondary intersection is divided by 4 is 3, and the order of the secondary intersections is displayed clockwise based on the obtained quotient and remainder. When multiple secondary intersections exist in one of the main directions, the remainder of the increasing number of secondary intersections in the same main direction is the same when divided by 4. Therefore, as the number of secondary intersections of an intersection in the traffic state display image 10 increases, embodiments of the present invention may number secondary intersections having different quantities or shapes in order to calculate traffic volume or to illustrate intersection traffic states IT_1-IT_4.

[0014] Intersection traffic conditions IT_1-IT_4 may further include traffic turning vector display pictures (TV). Let's take intersection traffic condition IT_1 as an example. Refer to Figure 4, which is a schematic diagram of the traffic turning vector display picture TV_1 of intersection traffic condition IT_1 according to an embodiment of the present invention. When a user clicks on intersection traffic condition IT_1 in Figure 1, the traffic condition display image 10 may be switched to display the traffic turning vector display picture TV_1, or the traffic turning vector display picture TV_1 may be displayed as a thumbnail within the traffic condition display image 10. The traffic turning vector display picture TV_1 is used to display an outflow table and an inflow table for each sub-intersection of the intersection according to the vehicle traffic data of the intersection. In an embodiment, the traffic condition display system 1 may calculate the outflow volume of vehicles at each sub-intersection based on vehicle detection through cameras and surveillance cameras installed at each sub-intersection, and then the inflow volume of vehicles at each sub-intersection of the intersection is obtained accordingly. As shown in Figure 4, the exit and entry tables for the increasing numbers 1 to 4 corresponding to the sub-intersections are displayed. As can be seen from the exit table for the sub-intersection with increasing number 1, 168 heavy vehicles, 84 cars, and 42 motorcycles are driving from the sub-intersection with increasing number 1 to the sub-intersection with increasing number 4, 156 heavy vehicles, 78 cars, and 39 motorcycles are driving from the sub-intersection with increasing number 1 to the sub-intersection with increasing number 3, and 144 heavy vehicles, 72 cars, and 36 motorcycles are driving from the sub-intersection with increasing number 1 to the sub-intersection with increasing number 2. Therefore, 819 vehicles are exiting the sub-intersection with increasing number 1, and 1953 vehicles are entering the sub-intersections with increasing number 1 from the sub-intersections with increasing numbers 4, 3, and 2, respectively. In addition, the corresponding straight-ahead rate and turning rate are listed in the exit and entry tables.Similarly, the traffic direction change vector display images of intersection traffic conditions are formed according to exit and entry tables for sub-intersections with an increasing number of 2 to 4, and exit and entry tables for sub-intersections with an increasing number of 1. Notably, vehicle classification is not limited to heavy vehicles, automobiles, and motorcycles. Other types of traffic vehicles such as bicycles, trucks, and trailer trucks are also applicable to the present invention.

[0015] Notably, when the traffic state display system 1 according to an embodiment of the present invention illustrates a traffic direction change vector display image, the exit and entry tables for sub-intersections with an increasing number of 1 are horizontal, and the exit and entry tables for sub-intersections with an increasing number of 2 are vertical. The display orientation of the entry and exit tables for sub-intersections corresponding to different increasing numbers (i.e., sub-intersections with different remainders when the corresponding increasing number is divided by 4) is different. As an example, as shown in the traffic direction change vector display image TV_1 in Figure 4, after the traffic state display system 1 calculates the exit and entry tables, the traffic state display system 1 is configured to decide whether to rotate the exit and entry tables according to the remainder when the increasing numbers 1 to 4 are divided by 4. That is, when the remainder when the increasing number is divided by 4 is 1 and 3, the exit and entry tables are horizontal, and when the remainder when the increasing number is divided by 4 is 2 and 0, the exit and entry tables are vertical, i.e., rotated 90 degrees compared to horizontal exit and entry tables. Therefore, the outflow and inflow tables in Figure 4 are displayed, and the links between each sub-intersection are illustrated with curved arrows to indicate the direction of vehicle inflow or outflow.

[0016] To reduce the calculations required to illustrate traffic condition images, as shown in the upper left corner of Figure 3, there are angular differences of 90 degrees, 180 degrees, and -90 degrees between sub-intersections with an increasing number of signal states 1 and sub-intersections with increasing numbers 2 to 4, respectively. After the traffic condition display system 1 according to an embodiment of the present invention obtains the traffic phase number of an intersection and default traffic phase information from a database, sub-intersections with increasing numbers corresponding to the traffic phase number are obtained. Thus, the angular differences of the signal states are known to illustrate the signal states of the corresponding sub-intersections shown in the traffic condition display image 10 based on the signal state of a single sub-intersection with an increasing number, and the signal state corresponding to a sub-intersection is displayed at the corresponding intersection. In one embodiment, after the traffic condition display system 1 obtains the increasing number corresponding to a sub-intersection, it is obtained based on the remainder when the increasing number is divided by 4. For example, when the remainder is 2, the angle difference is 90 degrees; when the remainder is 3, the angle difference is 180 degrees; and when the remainder is 0, the angle difference is -90 degrees. These diagrams are used accordingly to illustrate the signal state of a secondary intersection.

[0017] In addition, when illustrating the vehicle speed information in the traffic condition display image 10 of Figure 1, the vehicle speed information for two-way roads must be presented in order to display a vehicle speed image on each road. To avoid the overlap of vehicle speed information on two-way roads, the vehicle speed images between each sub-intersection of the intersection in the traffic condition display image 10 according to the embodiment of the present invention are illustrated based on a link vector and a rotation matrix.

[0018] In detail, taking location A in intersection traffic state IT_2 and location B in intersection traffic state IT_3 as examples, we assume that the coordinates of locations A and B correspond to the center locations of the road, (x1, y1) and (x2, y2). The traffic state display system 1 according to an embodiment of the present invention determines a link vector AB = (x2 - x1, y2 - y1) based on locations A and B, and normalizes vector AB to 1, so that the offset vehicle speed image is illustrated based on a rotation matrix. For example, a rotation matrix

Number

[0019] As shown in FIG. 5, the operation method of the traffic state display image 10 may be summarized as a traffic state display method 50. The traffic state display method 50 includes the following steps. Step 502: Start. Step 504: Display the intersection traffic state. Step 506: Display the signal state of each sub-intersection of the intersection via the signal state display image. Step 508: Display the outflow table and the inflow table of each sub-intersection by the traffic direction conversion vector display image according to the vehicle traffic data of the intersection. Step 510: Display the vehicle speed image between each sub-intersection of the intersection together with the vehicle speed information according to each intersection traffic state. Step 512: End.

[0020] Further details regarding the operation method of the traffic state display method 50 are provided by the above-described embodiment of the traffic state display image 10, and thus will not be described here for the sake of simplicity.

[0021] It should be noted that the above-described illustrated embodiments of the present invention may be appropriately modified by those skilled in the art and are not limited thereto. For example, the rotation matrix for illustrating a two-way road in a vehicle speed image, the display method of an automobile storage device, the numbering method of a sub-intersection, the display direction of an inflow table, and the inflow table are not limited to the above embodiments and may be modified according to the settings of a user or a computer system applicable to the present invention.

[0022] In summary, the traffic state display system and related display method according to the embodiments of the present invention reduce the storage space of a database and the setup time cost of intersection information in order to comprehensively display traffic states and related data information of traffic states.

[0023] Although several embodiments of the present invention have been described, the above embodiments are exemplary and the present invention is not intended to be limited to the above embodiments. The above embodiments may be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention.

Prior Art Documents

Patent Documents

[0024]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Explanation of Reference Signs

[0025] 1. Traffic Information Display System 102 Map Information 104 Vehicle speed information 50 Traffic Information Display Method Steps 502-504 Locations A and B CS_1 Vehicle memory information IT_1~IT_4 Intersection traffic condition LS, LS_1~LS_4 signal status display images TLS signal status table TV, TV_4 Traffic Direction Change Vector Display Image

Claims

1. A traffic condition display method for a traffic condition display system, The system displays multiple intersection traffic conditions, each intersection's traffic condition including multiple signal status display images. The signal status of each sub-intersection at each intersection is displayed in the signal status display image for each signal status display image. This includes displaying exit tables and entry tables corresponding to each sub-intersection of the intersection using a traffic direction change vector display image in accordance with vehicle traffic data, Each sub-intersection of the intersection on the aforementioned traffic direction change vector display image is numbered with an increasing number, The outflow volume in the outflow table and the inflow volume in the inflow table are displayed at each sub-intersection, which is numbered by the increasing number according to the remainder obtained when the increasing number for each sub-intersection is divided by 4. When the remainders of dividing the increasing number by 4 are 1 and 3, the outflow volume in the outflow table and the inflow volume in the inflow table are displayed horizontally along each road flowing into and / or out of each sub-intersection. When the remainders of dividing the increasing number by 4 are 1 and 3, the outflow volume in the outflow table and the inflow volume in the inflow table are displayed horizontally along each road flowing into and / or out of each sub-intersection. Each sub-intersection is a portion of an intersection allocated to each road that flows into and / or out of each intersection of a plurality of intersections. Traffic condition display method.

2. A traffic condition display method for a traffic condition display system, Displaying traffic conditions at multiple intersections, The signal status display image shows the signal status of each sub-intersection at the intersection, This includes displaying exit tables and entry tables corresponding to each sub-intersection of the intersection using a traffic direction change vector display image in accordance with vehicle traffic data, Each sub-intersection has an increasing number, and when one of the four main directions has multiple sub-intersections, the remainder of the increasing number corresponding to the multiple sub-intersections in the main direction is the same for each of the multiple sub-intersections when divided by 4, and the first display direction of the outflow vehicle volume in the first outflow table and the inflow vehicle volume in the first inflow table of the intersection in the traffic direction change vector display image of the intersection along the first road into which traffic flows and / or out of which sub-intersections The remainder of the increasing number for the first sub-intersection and the second sub-intersection differs when divided by 4. The traffic direction change vector display image includes a curved arrow relating the first exit table of the first secondary intersection to the second inbound table of the second secondary intersection. A difference in rotation angle exists between the first sub-intersection and the second sub-intersection in the aforementioned signal status display image. The difference in rotation angle corresponds to the increasing number of the first sub-intersection and the second sub-intersection, and the remainder of the increasing number of the first sub-intersection and the second sub-intersection differs when divided by 4. Each sub-intersection is a portion of an intersection assigned to each road that flows into and / or out of each intersection of a group of intersections. Traffic condition display method.

3. A traffic condition display system for displaying traffic condition display images, The aforementioned traffic condition display image includes map information including traffic conditions at multiple intersections, and each of the traffic conditions at multiple intersections is: A signal status display image configured to show the signal status of each sub-intersection at an intersection, Includes a traffic direction change vector display image configured to display an exit table and an entry table for the intersection according to vehicle traffic data, Each sub-intersection of the intersection on the aforementioned traffic direction change vector display image is numbered with an increasing number, The outflow volume in the outflow table and the inflow volume in the inflow table are displayed at each sub-intersection, which is numbered by the increasing number according to the remainder obtained when the increasing number for each sub-intersection is divided by 4. When the remainders of dividing the increasing number by 4 are 1 and 3, the outflow volume in the outflow table and the inflow volume in the inflow table are displayed horizontally along each road flowing into and / or out of each sub-intersection. When the remainder of dividing the increasing number by 4 is 2 and 0, the outflow volume in the outflow table and the inflow volume in the inflow table are displayed perpendicular to the horizontal along each road flowing into and / or out of each sub-intersection. Each sub-intersection is a portion of an intersection allocated to each road that flows into and / or out of each intersection of a plurality of intersections. Traffic condition display system.

Images