TW201818367A - System and method for switching a traffic sign - Google Patents

Abstract

A system for switching a traffic sign includes a pressure sensitive module, an intersection situation determination module and a traffic sign adjustment module. The pressure sensitive module is disposed in a buffer area of an intersection, and the pressure sensitive module is configured to get a vehicle-related parameter in the buffer area in a pressure sensing manner. The intersection situation determination module is configured to determine whether the buffer area is blocked when the vehicle-related parameter is greater than a predetermined value. The traffic sign adjustment module is configured to switch a traffic sign when the buffer is determined as blocked.

Description

Switching system and method for traffic signs

The disclosure relates to a switching system and method for traffic signs.

In recent years, with the popularization of automobiles and motorcycles, the phenomenon of traffic jams has become more and more common. Especially during the peak hours of commuting, the situation of traffic jams is not obvious, and passers-by often block in the vehicle array, thus affecting the subsequent itinerary planning.

Generally speaking, during peak traffic hours, the traffic police will command vehicles at intersections or adjust the switching of traffic signs to avoid traffic jams caused by vehicles concentrated in intersections. However, the manual control of traffic signage requires the maintenance of personnel for a long time and imposes an additional manpower burden. Therefore, how to further improve the switching of traffic signs to improve traffic smoothness has become one of the research topics in related research fields, and it is also an urgent need for improvement in related fields.

The present disclosure relates to a switching system and method for traffic signs that can instantly and automatically switch traffic signs to prevent vehicle jams in intersections, thereby improving traffic smoothness.

According to some embodiments of the disclosure, the switching system for the traffic sign includes a pressure sensing module, a road condition determining module, and a No. 1 tuning module. The pressure sensing module is disposed in one of the buffers of the intersection, and the pressure sensing module is configured to obtain vehicle related parameters located in the buffer by pressure sensing. The road condition judging module is configured to determine whether the buffer is blocked when the vehicle related parameter is greater than a preset value. The alarm adjustment module is used to switch traffic signs when the buffer is judged to be blocked.

According to some embodiments of the disclosure, the method for switching traffic signs includes the following steps. It is determined whether the vehicle related parameter detected by the pressure sensing module located in the buffer of the intersection is greater than a preset value. When the vehicle related parameter is determined to be greater than the preset value, it is determined whether the buffer is blocked. When the buffer is judged to be blocked, one of the traffic signs of the intersection is switched.

In various embodiments of the present disclosure, the traffic signal switching system and method thereof can determine the traffic flow by the pressure sensing module and the road condition judging module, and then change the traffic sign with the tally adjustment module, so that The traffic number can be automatically switched according to the traffic flow condition, so as to avoid the vehicle jamming in the intersection, thereby improving the traffic smoothness.

The above description is only for explaining the problems to be solved by the present disclosure, the technical means for solving the problems, the effects thereof, and the like, and the specific details of the disclosure will be described in detail in the following embodiments and related drawings.

The spirit and scope of the present disclosure will be apparent from the following description of the embodiments of the present disclosure, which may be modified and modified by the teachings of the present disclosure. Depart from the spirit and scope of this disclosure.

Generally speaking, the control system of the traffic sign is set in the cabinet located at the roadside of the traffic number, and the switching of the traffic sign is controlled by the central control unit to realize the sequential conversion of the red light and the green light. The control system has fixed parameters. Therefore, the switching time of the red or green light is often fixed and periodic, and the control parameters cannot be automatically adjusted according to the traffic flow in all directions. For example, the vehicle advancing along the first direction passes according to the green light indication of the first traffic sign, and the vehicle advancing along the second direction is stopped according to the red light indication of the second traffic sign. In the case of a large traffic flow, when the first traffic sign changes from a green light to a red light, the vehicle moving in the first direction often does not pass through the intersection and stays in the intersection, but the second traffic sign has been red. The light turns into a green light, causing the vehicle along the first direction and the vehicle along the second direction to fail to advance, even causing unnecessary car accidents. In view of this, the present disclosure provides a traffic sign switching system that can automatically adjust the switching of traffic signs according to traffic flow.

Refer to both Figure 1 and Figure 2. 1 is a top view of a traffic sign switching system and an application thereof according to some embodiments of the present disclosure. 2 is a schematic diagram of a switching system for traffic signs in accordance with some embodiments of the present disclosure. In some embodiments, the traffic signal switching system 10 includes a pressure sensing module 100, a road condition determining module 200, and a number one tuning module 300. The pressure sensing module 100 is disposed in one of the buffers A of the intersection, and the pressure sensing module 100 is configured to obtain the vehicle related parameters located in the buffer A by pressure sensing. The road condition determination module 200 is configured to determine whether the buffer A is blocked when the vehicle related parameter is greater than a preset value. The sign adjustment module 300 is configured to switch the traffic sign 400 located in the buffer A when the buffer A is judged to be blocked. In this way, the traffic sign 400 can be automatically switched according to the current traffic flow without additional manpower command, thereby improving traffic smoothness.

In more detail, in some embodiments, the traffic sign 400 is based on a predetermined time period T, and the pressure sensing module 100 will be in the first predetermined time before the traffic sign 400 wants to change the signal. The condition of the vehicle in the buffer A is detected to obtain vehicle related parameters. For example, in some embodiments, the predetermined time period T may be 45 seconds, 60 seconds, 75 seconds, or 90 seconds, but the disclosure is not limited thereto. In some embodiments, the first predetermined time may be 5 seconds, 10 seconds, or 15 seconds, but the disclosure is not limited thereto. When the pressure sensing module 100 detects that the vehicle related parameter is greater than a preset value V1 within the first predetermined time t1 before the traffic sign 400 is to be converted, the traffic signal 400 stops switching according to the predetermined time period T. The time period of the light signal and the traffic sign 400 switching is changed according to the result judged by the road condition determination module 200. Conversely, when the pressure sensing module 100 detects that the vehicle related parameter is less than or equal to a preset value V1 within the first predetermined time t1 before the traffic sign 400 is to be converted, the traffic sign 400 will be scheduled according to the schedule. The time period T switches the light number. In this way, the traffic signal switching system 10 can adjust the switching of the traffic signal 400 according to the vehicle related parameters detected by the pressure sensing module 100, that is, adjust the time period of the traffic signal 400 switching, thereby avoiding The vehicle is blocked in the intersection.

In some embodiments, the pressure sensing module 100 is connected to the road condition determination module 200, and the signal adjustment module 300 is connected to the road condition determination module 200 and the traffic number 400. That is, the pressure sensing module 100 and the road condition determination module 200 can be electrically connected to each other or transmitted by a wireless communication system or the like, and the signal adjustment module 300 and the road condition determination module 200 and the traffic sign 400 The signals may be electrically connected to each other or transmitted by a wireless communication system or the like, but the disclosure is not limited thereto.

In some embodiments, as shown in FIG. 1, the buffer zone A may be the intersection of the first road 510 and the second road 520. The vehicle located on the first road 510 advances along a first direction D1, the vehicle system located at the second road 520 advances along a second direction D2, and the first direction D1 intersects the second direction D2. For example, in some embodiments, the first direction D1 is perpendicular to the second direction D2. In other embodiments, the first direction D1 and the second direction D2 are at an angle, and the angle may be about 45 to 135 degrees, but the disclosure is not limited thereto.

For example, in other embodiments, as shown in FIG. 1 , another buffer A may be the intersection of the third road 530 and the fourth road 540 . The vehicle located on the third road 530 is advanced along the third direction D3, and the vehicle system located at the fourth road 540 is advanced along the fourth direction D4. The first direction D1 is opposite to the third direction D3, and the second direction D2 is opposite to the fourth direction D4, but the disclosure is not limited thereto. That is, the pressure sensing module 100 can be disposed in a plurality of buffers A, and the buffer A can be the intersection of any two non-parallel and intersecting roads.

In some embodiments, the vehicle-related parameters detected by the pressure sensing module 100 include the area occupied by the buffer A in the unit time, that is, the degree of vehicle congestion in the buffer A per unit time. . In more detail, the pressure sensing module 100 includes a plurality of pressure sensing units 110, the pressure sensing unit 110 is embedded in the buffer A, and the pressure sensing unit 110 can occupy the entire buffer A to detect the buffer. Whether there is a vehicle in A. For example, the vehicle X located in the buffer A can provide a first positive force to the buffer A such that the plurality of pressure sensing units 110 located in the buffer A are triggered. Similarly, the vehicle Y located in the buffer A can provide a second positive force to the buffer A such that the plurality of pressure sensing units 110 located in the buffer A are triggered. In this way, by comparing the number of triggers of the pressure sensing unit 110 with the number of the overall pressure sensing unit 110, the pressure sensing module 100 can estimate the area ratio of the vehicle occupying the buffer A, thereby obtaining vehicle correlation. parameter. For example, in some embodiments, the vehicle related parameter may be an area ratio of the buffer A occupied by the vehicle per unit time, and the preset value V1 may be 70%, 80%, or 90%, but the disclosure does not Limited.

In other embodiments, the vehicle-related parameters detected by the pressure sensing module 100 include the weight of the load in the buffer A per unit time, that is, the pressure sensing module 100 can measure that the pressure sensing unit 110 is touched. The degree to which the weight of the vehicle is converted, thereby obtaining the overall load weight in the buffer A. Alternatively, in other embodiments, the vehicle-related parameters detected by the pressure sensing module 100 include the number of vehicles in the buffer A per unit time. Alternatively, in other embodiments, the pressure sensing module 100 further includes an auxiliary infrared sensing device to help the pressure sensing module 100 obtain vehicle-related parameters more accurately, but the disclosure is not limited thereto.

In particular, the vehicle related parameters are related to the vehicle system in buffer A, and the state of the vehicle located in buffer A can be inferred by determining vehicle related parameters. For example, in some embodiments, the vehicle related parameter may be an area occupied by the vehicle in the buffer A per unit time, a load weight in the buffer A per unit time, a number of vehicles in the buffer A per unit time, Other suitable vehicle related states, or any combination thereof, but the disclosure is not limited thereto.

In some embodiments, the pressure sensing module 100 and the road condition determination module 200 operate without interruption. In more detail, the pressure sensing module 100 includes a signal transmitting device 120, and the road condition determining module 200 also includes a corresponding signal receiving device 230. When the vehicle-related parameter detected by the pressure sensing unit 110 is greater than the preset value V1, the signal transmitting device 120 synchronously transmits a trigger signal S, which is received by the signal receiving device 230 of the road condition determining module 200. receive. Simultaneously or without interruption, the road condition determination module 200 will immediately determine whether the buffer A is blocked. In this way, the traffic signal switching system 10 can quickly adjust the switching of the traffic number 400 according to the traffic flow condition. It can be understood that the "non-disruptive" set in this article means that the two modules (hardware, firmware or software) have no operating time, or the operating time interval is approximately equal to the time required for signal transmission. That is to say, when a module receives a signal, the module can immediately perform a corresponding function according to the signal, and does not maintain an idle time after receiving the signal. In this way, the traffic sign 400 can be switched in a more immediate manner depending on the condition of the traffic flow. For example, in some embodiments, determining whether the buffer A is blocked is performed by the road condition determination module 200, and the switching traffic number 400 is performed by the number adjustment module 300, and the road condition determination module 200 The operation time is not spaced from the operation time of the alarm adjustment module 300, or the operation time interval between the road condition determination module 200 and the alarm adjustment module 300 is approximately equal to the road condition determination module 200 transmitting a signal to the alarm adjustment. The time required for module 300.

In some embodiments, the road condition determination module 200 further includes an image capture module 210 and an image analysis module 220. The image capturing module 210 is connected to the pressure sensing module 100 by a signal. The image capturing module 210 is configured to capture a vehicle image located in the buffer A when the vehicle related parameter is greater than the preset value V1. The image analysis module 220 is connected to the image capturing module 210, and the image analyzing module 220 is configured to analyze the image of the vehicle to output an image analysis result. For example, in some embodiments, the image capturing module 210 is disposed on the traffic sign 400 or on one of the roadside/safety island mounts to capture the image of the vehicle located in the buffer zone A. However, this disclosure is not limited to this.

In some embodiments, the image capturing module 210 has a high-resolution dynamic shooting function. When the image capturing module 210 is triggered to be activated, the image capturing module 210 will be in a fixed time (for example, 5). A plurality of vehicle images are taken in seconds or 10 seconds, and the shooting images of each vehicle image are separated by a fixed time, but the disclosure is not limited thereto. Simultaneously, the image capturing module 210 can transmit a plurality of vehicle images to the image analyzing module 220.

In some embodiments, when the image analysis module 220 receives the image of the vehicle from the image capturing module 210, the image analysis module 220 can analyze whether the intersection is blocked by the vehicle image to output an image analysis result, and the image analysis result can include Whether the intersection is blocked, whether there is a car accident at the intersection, or whether it is misjudged, etc., but this disclosure is not limited to this. In more detail, the image analysis module 220 can obtain the state of the vehicle passing through the buffer A, the number of vehicles, or both by analyzing the change of the image of the vehicle, thereby determining the condition in the buffer A. In this way, the traffic signal switching system 10 can more accurately determine the condition of the traffic flow, thereby avoiding the misjudgment of the pressure sensing module 100.

For example, in some embodiments, when the average speed of the vehicle detected by the road condition determination module 200 is less than 20 km/h, the road condition module 200 determines that the buffer A is blocked. Alternatively, when the vehicle speed detected by the road condition determination module 200 is less than 30 km/h, the road condition module 200 determines that the buffer A is blocked, but the disclosure is not limited thereto. In other embodiments, when the number of vehicles in the buffer A detected by the road condition determination module 200 is greater than 30, the road condition module 200 may determine that the buffer A is blocked, but the disclosure is not limited thereto.

For example, in some embodiments, the image analysis module 220 can be implemented by a computer program of an electronic device and stored in the storage device. The storage device includes a non-transitory computer readable recording medium or other storage device. The computer program includes a plurality of program instructions that can be executed by a central processing unit to perform the functions of the various modules.

In other embodiments, the road condition determination module 200 may include a Radio Frequency Identification (RFID) system for capturing an infinite radio frequency identification code of the vehicle to obtain a forward speed of the vehicle. For example, the vehicle may include an electronic barcode (e-tag) and a radio frequency identification code, and the radio frequency identification system may infer the buffer by the number of radio frequency identification codes of the vehicle captured per unit time. The flow rate of the vehicle in A, but this disclosure is not limited to this.

In some embodiments, the road condition determination module 200 and the sign adjustment module 300 operate without interruption. In more detail, the alarm adjustment module 300 further includes an analysis result receiving device 310 for receiving the image analysis result output by the road condition determination module 200. In some embodiments, the road condition determination module 200 can quickly determine whether the road is blocked, and synchronously transmit the image analysis result to the alarm adjustment module 300. Simultaneously, the sign adjustment module 300 can determine whether to switch the traffic sign 400 according to the image analysis result received by the analysis result receiving device 310. In this way, the traffic signage switching system 10 can instantly adjust the switching of the traffic sign 400 according to the condition of the traffic flow.

For example, in some embodiments, when the image analysis result received by the analysis result receiving device 310 is blocked, the sign adjustment module 300 can switch the traffic sign 400 early so that the subsequent vehicle does not advance to the buffer. A. Alternatively, when the vehicle signal received by the analysis result receiving device 310 is a false positive, the sign adjustment module 300 notifies the traffic sign 400 to switch according to the original time period T, but the disclosure is not limited thereto.

In more detail, in some embodiments, as shown in FIG. 1, the traffic sign 400 may include a first traffic sign 410 and a second traffic sign 420. The first road 510 corresponds to the first traffic sign 410, that is, the vehicle located on the first road 510 travels according to the light of the first traffic sign 410. Similarly, the second road 520 corresponds to the second traffic sign 420, that is, the vehicle located on the second road 520 travels according to the light of the second traffic sign 420. When the first traffic sign 410 is a green light (passable), the pressure sensing module 100 and the road condition determining module 200 determine the traffic flow along the first direction D1, and at the same time, the sign adjustment module 300 The first traffic sign 410 is automatically adjusted based on the traffic volume. In this way, the traffic sign switching system 10 can avoid the situation that the vehicles in the first direction D1 and the second direction D2 cannot advance, thereby improving traffic smoothness.

For example, in some embodiments, when the traffic volume traveling along the first direction D1 is determined to be blocked, the sign adjustment module 300 switches the first traffic sign 410 early so that the subsequent vehicles do not Enter buffer A. That is to say, the first traffic sign 410 is red lighted and the second traffic sign 420 is also red light. Therefore, the vehicle traveling along the first direction D1 can smoothly pass through the buffer A before the second traffic sign 420 is switched to the green light. Alternatively, in some embodiments, when the traffic volume traveling along the first direction D1 is determined to be blocked, the sign adjustment module 300 delays switching the first traffic sign 410 and delays switching the second traffic sign 420. Therefore, after the vehicle advancing along the first direction D1 can smoothly pass through the buffer zone A, the second traffic sign 420 is switched to be a green light, but the disclosure is not limited thereto. It should be understood that only one buffer A in the intersection is used as an explanation here, but in practical application, the traffic signal switching system 10 can be applied to multiple buffers in the intersection (for example: 2, 3 or 4) Buffers) should not limit this disclosure.

Refer to Figure 3. FIG. 3 is a flow chart showing the steps of a method for switching traffic signs according to some embodiments of the present disclosure. In some embodiments, the method for switching traffic signs includes the following steps. In step S10, it is determined whether the vehicle-related parameter detected by the pressure sensing module 100 in the buffer A of the intersection is greater than a preset value within a first predetermined time before the traffic sign 400 is switched. If the vehicle related parameter is determined to be greater than the preset value, step S20 is performed; if the vehicle related parameter is determined to be less than or equal to the preset value, then returning to step S15, the switching time period T of the traffic sign 400 is maintained. In step S20, when the vehicle related parameter is determined to be greater than the preset value, it is determined whether the buffer A is blocked. If the buffer A is judged to be blocked, step S30 is immediately executed; if the buffer A is judged not to be blocked, the process returns to step S15 to maintain the switching time period T of the traffic sign 400. In step S30, when the buffer A is judged to be blocked, one of the traffic signs 400 of the intersection is switched.

In some embodiments, the step S20 of determining whether the buffer A is blocked or not and the step S30 of switching the traffic number are performed without interruption. That is, when the buffer A is judged to be blocked, the traffic sign 400 is quickly switched, and there is substantially no time difference between step S20 and step S30. In this way, the traffic signal switching system 10 can quickly adjust the switching of the traffic number according to the traffic flow condition.

Refer to Figure 4. FIG. 4 is a flowchart of step S20 of the method for switching traffic signs according to some embodiments of the present disclosure, and step S20 further includes the following steps. In step S202, when the vehicle related parameter is determined to be greater than the preset value, the vehicle image in the buffer A is captured. In step S204, the vehicle image is analyzed to output an image analysis result, and the image analysis result is related to whether the buffer A is blocked. For example, when the image analysis result is blocked, the buffer A is judged to be blocked.

In various embodiments of the present disclosure, the traffic signal switching system and the method thereof can determine the traffic flow by using the pressure sensing module and the road condition judging module, and then change the traffic sign with the tally adjustment module, so that The traffic number can be switched instantaneously and automatically according to the traffic flow condition, that is, the switching time period of the traffic sign is adjusted, thereby preventing the vehicle from being blocked in the intersection, thereby improving the traffic smoothness.

In some embodiments of the present invention, the present invention has been disclosed in various embodiments, and is not intended to limit the present invention, and various modifications may be made without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

100‧‧‧ Pressure Sensing Module

110‧‧‧ Pressure sensing unit

120‧‧‧Signal transmitter

200‧‧‧Road Status Judgment Module

210‧‧‧Image capture module

220‧‧‧Image Analysis Module

230‧‧‧Signal receiving device

300‧‧‧# adjustment module

310‧‧‧Analysis result receiving device

400‧‧‧Traffic number

410‧‧‧First Traffic Sign

420‧‧‧Second traffic sign

510‧‧‧ First road

520‧‧‧ Second Road

530‧‧‧ Third Road

540‧‧‧ Fourth Road

A‧‧‧buffer

D1‧‧‧ first direction

D2‧‧‧ second direction

D3‧‧‧ third direction

D4‧‧‧ fourth direction

Read the following detailed description and the corresponding drawings to understand the various aspects of the disclosure. It should be noted that the various features in the drawings do not draw actual proportions in accordance with standard practice in the industry. In fact, the dimensions of the features described can be arbitrarily increased or decreased to facilitate clarity of discussion. 1 is a top view of a traffic sign switching system and an application thereof according to some embodiments of the present disclosure. 2 is a schematic diagram of a switching system for traffic signs in accordance with some embodiments of the present disclosure. FIG. 3 is a flow chart showing the steps of a method for switching traffic signs according to some embodiments of the present disclosure. Figure 4 is a flow chart showing the step S20 of the method for switching traffic signs in accordance with some embodiments of the present disclosure.

Claims (10)

A switching system for a traffic sign includes: a pressure sensing module disposed in a buffer of the intersection, the pressure sensing module being used to obtain the buffer in the buffer a vehicle-related parameter; a road condition determination module, configured to determine whether the buffer is blocked when the vehicle-related parameter is greater than a preset value; and a number one adjustment module for determining that the buffer is determined When blocking, switch a traffic sign. The switching system for a traffic sign as described in claim 1, wherein the road condition judging module further comprises: an image capturing module, configured to: when the vehicle related parameter is greater than the preset value, An image of the vehicle in the buffer; and an image analysis module for analyzing the image of the vehicle to output an image analysis result, wherein the signal adjustment module is configured to switch the traffic signal according to the image analysis result. The switching system for traffic signs according to claim 1, wherein the road condition judging module and the tune adjusting module operate without interruption. The switching system for a traffic sign of claim 1, wherein the vehicle-related parameter detected by the pressure sensing module includes an area occupied by the vehicle in the unit time. The switching system for traffic signs according to claim 1, wherein the pressure sensing module and the road condition determining module operate without interruption. A method for switching traffic signs includes: determining whether a vehicle-related parameter detected by a pressure sensing module located in a buffer of one of the intersections is greater than a preset value; when the vehicle related parameters are determined If it is greater than the preset value, it is determined whether the buffer is blocked; and when the buffer is judged to be blocked, one of the traffic signs of the intersection is switched. The method for switching traffic signs according to claim 6, wherein the determining whether the buffer is blocked comprises: when the vehicle related parameter is determined to be greater than the preset value, capturing one of the buffers Vehicle image; analyzing the vehicle image to output an image analysis result, wherein the image analysis result is related to whether the buffer is blocked. The method for switching traffic signs according to claim 6, wherein the determining whether the buffer is blocked is performed by a road condition judging module, and the switching the traffic number is performed by a No. 1 tuning module. Execution, wherein the operation time of the road condition determination module is not spaced from the operation time of the alarm adjustment module, or the operation time interval between the road condition determination module and the alarm adjustment module is approximately equal to the road condition determination mode The time required for the group to pass a signal to the tuning module. The method for switching traffic signs according to claim 6, wherein the determining whether the vehicle related parameter is greater than the preset value comprises: determining whether the area occupied by the vehicle in the unit time is greater than a preset. area. The method for switching traffic signs according to claim 6, wherein the pressure sensing module and the road condition determining module operate without interruption.