Campus pedestrian safety warning device and warning method
By designing environmental perception devices on campus to monitor the incoming vehicles and sending warnings to pedestrians, the problem of weak traffic safety awareness among students on campus is solved, and low-cost and efficient traffic safety guarantees are achieved without excavating the road surface.
Patent Information
- Application Number
- CN202510168533.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-05-13
AI Technical Summary
Students on university campuses have weak awareness of traffic safety, and are common in crossing roads, walking in the opposite direction, and walking on mobile phones, resulting in frequent traffic safety accidents on campuses, and it is difficult for existing technology to effectively ensure the active safety of pedestrians.
A safety warning device for pedestrians on campus is designed to monitor the traffic coming from behind and in front of pedestrians through environmental perception devices (including visual sensors and mechanical rotary scanning lidar), and issue light warnings and sound warnings to pedestrians to maximize the traffic safety of pedestrians.
It realizes that pedestrians and vehicles can be monitored and warned in real time through sensor technology without the need to excavate the road surface on campus without the cost and is convenient for maintenance, thereby improving the traffic safety awareness and safety guarantee of pedestrians on campus.
Smart Images
Figure CN119992812A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a traffic warning device and method, in particular to a campus pedestrian safety warning device and method. Background Art
[0002] There are many students on university campuses, but their awareness of traffic safety is weak. It is very common for students to cross the road, walk in the opposite direction, and look at their mobile phones while walking. Especially during peak hours of classes, people and vehicles often walk together without giving way to each other. In addition, due to the large number of people and noise, vehicles cannot honk to remind others, making it difficult for vehicles to drive. There are even cases where students actively crash into cars because of looking at their mobile phones. In addition, the road network on campus is complex and the road structure is poor, so there are frequent reports of serious traffic accidents on campus.
[0003] However, the current traffic safety of pedestrians on campus is currently solved in most cases by simply limiting the speed of vehicles. This still puts the traffic safety of pedestrians on campus in the hands of motor vehicle drivers, and pedestrians do not have the initiative to take charge of their own safety.
[0004] In addition, the luminous pavement widely used at the intersection can play a warning role, but when laying, the road surface needs to be excavated, which is difficult to build, costly, complicated to maintain, and not convenient for large-scale laying, so the warning function is very limited. Therefore, it is very necessary to provide an active warning device with low cost and large-scale deployment, so that the safety of pedestrians on campus is in the hands of pedestrians themselves. Summary of the invention
[0005] In response to the problems existing in the prior art, the present invention provides a pedestrian safety warning device and warning method on campus. By monitoring the vehicles coming from behind and in front of pedestrians at any time, light warnings and sound warnings are issued to pedestrians, thereby maximizing the traffic safety of pedestrians on campus.
[0006] The present invention is achieved through the following technical solutions: A pedestrian safety warning device on campus, comprising a support frame, a foundation device, a safety warning device, a vehicle speed display device, an environment sensing device and a control unit, wherein the support frame is composed of a vertical support frame and a cantilever frame, wherein the bottom end of the vertical support frame is installed on the foundation device, the cantilever frame is installed on the upper end of the vertical support frame, and an outer shell is wrapped on the surface of the vertical support frame; The safety warning device is composed of a warning light component and a sound warning component, and is installed on the surface of the housing; The vehicle speed display device is composed of two display screens, display screen one and display screen two are respectively installed on both sides of the cantilever frame; The environment perception device includes two visual sensors and a mechanical rotating scanning laser radar, the two visual sensors and the laser radar are installed on the cantilever frame, and the visual sensor 1 and the visual sensor 2 are installed on both sides of the cantilever frame respectively; The control unit adopts an STM32 single-chip microcomputer and is installed in an inspection slot arranged at the bottom of the supporting frame side.
[0007] Furthermore, the warning light assembly includes a warning light 1 and a warning light 2, which are symmetrically installed on the front and back sides of the shell, and are used to warn pedestrians walking in the forward direction of vehicles coming in front and behind, and pedestrians walking in the reverse direction of vehicles coming in front and behind.
[0008] Furthermore, the sound warning component includes a sound warning device 1 and a sound warning device 2, which are installed at the top of the front and back sides of the housing and are used in conjunction with the light warning component.
[0009] A warning method for a pedestrian safety warning device on campus, S1, set the sensing range of the environmental sensing device to 1-200m in one direction; S2, within the perception range, when the pedestrian walks in the positive direction and there is a vehicle behind, the video sensor 1 and the video sensor 2 visually perceive and identify the vehicle and the student, and the lidar measures the distance and speed between the vehicle and the pedestrian by fusing the perception results of the visual sensors through fusion perception technology; S3, the environment sensing device transmits the signal to the control unit; S4, the control unit controls the flashing of the warning light assembly or the sound warning assembly and the warning display of the vehicle speed display device according to different conditions; If the current time is the end of get out of class time T, and the number of pedestrians in the lane P ≥20 or during non-school hours, the number of pedestrians in the lane P ≥50, trigger the get out of class end mode. In the get out of class end mode, if there is a vehicle driving speed V>0 , the safety warning device works, that is, the warning light component and the sound warning component sound an alarm at the same time, and the speed display device displays the real-time speed and the words "Watch out for pedestrians"; Except for the off-course mode, all other modes are normal mode. In normal mode, when the vehicle speed within the sensing range is V> 0 : a. If the speed of cars on campus V ≤ Vp And L ≥10m, the safety warning device does not work; b. If the speed of cars on campus V ≤ Vp And L<10m, the light warning component in the safety warning device works; c. If the speed of cars on campus meets the conditions Vp <V ≤10km / h and △ L ≥20m, the light warning component in the safety warning device works, and the speed display device displays the real-time speed; d. If the speed of cars on campus meets the conditions Vp <V ≤10km / h and △ L <20m, the sound warning component in the safety warning device works, and the speed display device displays the real-time speed and the words "Note the distance"; e. If the speed of cars on campus V >10km / h, the pedestrian safety warning device works, and the speed display shows the real-time speed and the words "overspeed brake"; in, P is the number of people in the lane of the detection area, in units of people; △L is the distance between the vehicle and the pedestrian, in meters; V is the vehicle speed, in km / h; Vp is the pedestrian walking speed, in km / h, and the pedestrian walking speed is set to 5 km / h; T is time.
[0010] Furthermore, the warning light component provides an alarm in the form of a flashing yellow light, and the sound warning component provides an alarm in the form of "a car is approaching, pull over." Beneficial Effects
[0011] The beneficial effects of the present invention are: simple structure, easy installation, no need to excavate the road surface, low cost, easy maintenance, concise control logic, mature fusion sensor technology, and low environmental perception requirements. While detecting vehicles and pedestrians on campus, it can not only warn pedestrians, but also display the vehicle speed to warn vehicle drivers, thereby fully guaranteeing the traffic safety of pedestrians on campus. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the present invention (front view); Figure 2 is a schematic diagram of the three-dimensional structure of the present invention (back side); Figure 3 It is a schematic diagram of the control system of the present invention; Figure 4 It is the logic flow chart of mode determination of the present invention; Figure 5 It is a logic flow chart of the control of the get out of class ending mode of the present invention; Figure 6 is a control logic flow chart of a conventional control mode of the present invention; Explanation of the accompanying drawings: 1. Support frame, 101. Vertical support frame, 102. Cantilever frame, 2. Foundation device, 3. Shell, 4. Warning light assembly, 401. Warning light one, 402. Warning light two, 5. Sound warning assembly, 501. Sound warning device one, 502. Sound warning device two, 6. Vehicle speed display device, 601. Display screen one, 602. Display screen two, 7. Environmental perception device, 701. Visual sensor one, 702. Visual sensor two, 703. LiDAR. DETAILED DESCRIPTION
[0013] The present invention will be further described below in conjunction with the accompanying drawings.
[0014] By those skilled in the art, all electrical components in the present invention are connected to their compatible power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connections between the electrical components are completed in the order of working in sequence. The detailed connection means are well-known technologies in the art. The following mainly introduces the principles and processes, and no further explanation of electrical control is given.
[0015] See also Figure 1-Figure 6 , a pedestrian safety warning device in a campus, comprising a support frame 1, a foundation device 2, a safety warning device, a vehicle speed display device 6, an environment sensing device 7 and a control unit 8, wherein the support frame 1 is composed of a vertical support frame 101 and a cantilever frame 102, wherein the bottom end of the vertical support frame 101 is installed on the foundation device 2, the cantilever frame 102 is installed on the upper end of the vertical support frame 101, and a shell 3 is wrapped on the surface of the vertical support frame 101; The safety warning device is composed of a warning light component 4 and a sound warning component 5, which are installed on the surface of the housing 3; The vehicle speed display device 6 is composed of two display screens, display screen 1 601 and display screen 2 602 are respectively installed on both sides of the cantilever frame 102; The environment sensing device 7 includes two visual sensors and a mechanical rotating scanning laser radar 703. The two visual sensors and the laser radar 703 are installed on the cantilever frame 102, and the visual sensor 1 701 and the visual sensor 2 702 are installed on both sides of the cantilever frame 102 respectively. In specific applications, the two visual sensors can detect the environment in different directions in front and behind, and the lidar can also detect the front and rear environments through rotational scanning.
[0016] The control unit adopts an STM32 single chip microcomputer and is installed in an inspection slot arranged at the bottom of the support frame 101 side.
[0017] As a preferred solution, further, the warning light assembly 4 includes a warning light 1 401 and a warning light 2 402, and the warning light 401 and the warning light 402 are symmetrically installed on the front and back sides of the housing 3, respectively used to warn pedestrians walking in the forward direction and vehicles coming from the front and rear, and pedestrians walking in the reverse direction and vehicles coming from the front and rear; In specific applications, the warning light assembly only serves as an auxiliary warning. The warning light is added to minimize the number of sound warnings and avoid noise when there are fewer pedestrians and the warning level is low.
[0018] As a preferred solution, further, the sound warning component 5 includes a sound warning device 1 501 and a sound warning device 2 502, which are installed at the top of the front and back of the shell 3 and are used in conjunction with the light warning component. The sound warning component can play a major warning role when the pedestrian turns his back to the warning device and cannot see the warning light.
[0019] A warning method for a pedestrian safety warning device on campus, S1, setting the sensing range of the environment sensing device 7 to 1-200m in one direction; S2, within the sensing range, when the pedestrian is walking in the positive direction and there is a vehicle behind him, the video sensor 1 701 and the video sensor 2 702 visually perceive and identify the vehicle and the student, and the laser radar 703 measures the distance and speed between the vehicle and the pedestrian by fusing the perception results of the visual sensors through the fusion perception technology; S3, the environment sensing device 7 transmits the signal to the control unit 8; S4, the control unit 8 controls the execution of the warning light assembly 4 to flash or the sound warning assembly 5 to sound a warning and the vehicle speed display device 6 to display a warning according to different conditions; If the current time is the end of get out of class time T, and the number of pedestrians in the lane P ≥20 or during non-school hours, the number of pedestrians in the lane P ≥50, trigger the get out of class end mode. In the get out of class end mode, if there is a vehicle driving speed V>0 , the safety warning device works, that is, the warning light component 4 and the sound warning component 5 sound an alarm at the same time, and the speed display device 6 displays the real-time speed and the words "Watch out for pedestrians"; Except for the off-course mode, all other modes are normal mode. In normal mode, when the vehicle speed within the sensing range is V> 0 : a. If the speed of cars on campus V ≤ Vp And L ≥10m, the safety warning device does not work; b. If the speed of cars on campus V ≤ Vp And L<10m, the light warning component in the safety warning device works; c. If the speed of cars on campus meets the conditions Vp <V ≤10km / h and △ L ≥20m, the light warning component in the safety warning device works, and the speed display device displays the real-time speed; d. If the speed of cars on campus meets the conditions Vp <V ≤10km / h and △ L <20m, the sound warning component in the safety warning device works, and the speed display device displays the real-time speed and the words "Note the distance"; e. If the speed of cars on campus V >10km / h, the pedestrian safety warning device works, and the speed display shows the real-time speed and the words "overspeed brake"; in, P is the number of people in the lane of the detection area, in units of people; △L is the distance between the vehicle and the pedestrian, in meters; V is the vehicle speed, in km / h; Vp is the pedestrian walking speed, in km / h, and the pedestrian walking speed is set to 5 km / h; T is time.
[0020] Furthermore, the warning light component 4 provides an alarm in the form of a flashing yellow light, and the sound warning component 5 provides an alarm in the form of "a car is approaching, please pull over".
[0021] Working principle: like Figure 3 As shown, when a pedestrian walks in the positive direction and there is a vehicle behind him, the visual sensor 701 and the laser radar 703 collect data on vehicles and pedestrians on the road. The visual sensor 701 performs visual perception to identify vehicles and pedestrians, and the laser radar 703 integrates the visual sensor results through fusion perception technology to measure the distance and speed between the vehicle and the pedestrian, and then transmits the signal to the control unit. The control unit controls the execution of the warning light 401 flashing or the sound alarm 501 sound prompt and the display screen 601 warning according to different conditions. When the pedestrian walks in the opposite direction and there is a vehicle behind him, the principle is the same as above.
[0022] exist Figure 4 , Figure 5 and Figure 6 As shown, the environmental sensing range of the pedestrian safety warning device of the present invention is 1-200m in one direction. When within the sensing range of the environmental sensing components 701, 702, and 703, if the current time T is within the get out of class time and the number of pedestrians in the lane P≥20 or the number of pedestrians in the non-get out of class time P≥50, the get out of class time mode is triggered. In the get out of class time mode, the vehicle speed in the detection area is detected.V>0 The direct light warning device gives a light alarm, and the sound warning device gives a sound alarm. The vehicle speed display shows the real-time vehicle speed and the words "Pay attention to pedestrians".
[0023] In other cases, the conventional control mode is triggered. In the conventional control mode, when the vehicle speed within the detection area V>0 : If the vehicle speed V of the car on campus ≤ Vp and △L ≥ 10m, the pedestrian safety warning device does not give an alarm; if the vehicle speed V of the car on campus ≤ Vp and △L < 10m, the light warning device of the pedestrian safety warning device gives a light alarm; if the vehicle speed of the car on campus meets the condition Vp < V ≤ 10 km / h and △L ≥ 20m, the light warning device of the pedestrian safety warning device gives a light alarm, and the vehicle speed display shows the real-time vehicle speed; if the vehicle speed of the car on campus meets the condition Vp < V ≤ 10 km / h and △L < 20m, the sound warning device of the pedestrian safety warning device gives a sound alarm, and the vehicle speed display shows the real-time vehicle speed and the words "Pay attention to the distance"; if the vehicle speed V of the car on campus > 10 km / h, the light and voice of the pedestrian safety warning device give an alarm simultaneously, and the vehicle speed display shows the real-time vehicle speed and the words "Speeding and braking". In this way, the purpose of ensuring the traffic safety of students on campus can be achieved.
[0024] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.
Claims
1. A pedestrian safety warning device on campus, comprising a support frame (1), a foundation device (2), a safety The warning device, the vehicle speed display device (6), the environment sensing device (7) and the control unit (8) are characterized by: The support frame (1) is composed of a vertical support frame (101) and a cantilever frame (102), wherein the bottom end of the vertical support frame (101) is installed on the foundation device (2), and the cantilever frame (102) is installed on the upper end of the vertical support frame (101), and the outer shell (3) is wrapped on the surface of the vertical support frame (101); The safety warning device is composed of a warning light component (4) and a sound warning component (5), and is installed on the surface of the housing (3); The vehicle speed display device (6) is composed of two display screens, display screen 1 (601) and display screen 2 (602) are respectively installed on both sides of the cantilever frame (102); The environment sensing device (7) comprises two visual sensors and a mechanical rotating scanning laser radar (703), wherein the two visual sensors and the laser radar (703) are both mounted on the cantilever frame (102), and the visual sensor 1 (701) and the visual sensor 2 (702) are respectively mounted on both sides of the cantilever frame (102); The control unit adopts an STM32 single-chip microcomputer and is installed in an inspection slot arranged at the bottom of the side of the support frame (101).
2. A campus pedestrian safety warning device according to claim 1, characterized in that: Place The warning light assembly (4) comprises a warning light 1 (401) and a warning light 2 (402), wherein the warning light 1 (401) and the warning light 2 (402) are symmetrically mounted on the front and back sides of the housing (3), and are used to warn pedestrians walking in the forward direction of vehicles coming in front of and behind, and pedestrians walking in the reverse direction of vehicles coming in front of and behind, respectively.
3. A campus pedestrian safety warning device according to claim 1, characterized in that: The sound warning component (5) comprises a sound warning device 1 (501) and a sound warning device 2 (502), which are installed at the uppermost ends of the front and back sides of the housing (3) and are used in conjunction with the light warning component.
4. A warning method of a pedestrian safety warning device on campus, comprising the following steps: S1, setting the sensing range of the environment sensing device 7 to 1-200m in one direction; S2, within the sensing range, when the pedestrian is walking in the positive direction and there is a vehicle behind him, the video sensor 1 701 and the video sensor 2 702 visually perceive and identify the vehicle and the student, and the laser radar 703 measures the distance and speed between the vehicle and the pedestrian by fusing the perception results of the visual sensors through the fusion perception technology; S3, the environment sensing device 7 transmits the signal to the control unit 8; S4, the control unit 8 controls the warning light assembly 4 to flash or the sound warning assembly 5 to sound a warning and the vehicle speed display device 6 to display a warning according to different conditions.
5. The warning method of the campus pedestrian safety warning device according to claim 4, characterized in that: Within the environmental perception range, If the current time is the end of get out of class time T, and the number of pedestrians in the lane P ≥20 or during non-school hours, the number of pedestrians in the lane P ≥50, trigger the get out of class end mode. In the get out of class end mode, if there is a vehicle driving speed V>0 , the safety warning device works, that is, the warning light component 4 and the sound warning component 5 sound an alarm at the same time, and the speed display device 6 displays the real-time speed and the words "Watch out for pedestrians"; Except for the off-course mode, all other modes are normal mode. In normal mode, when the vehicle speed within the sensing range is V>0 : a. If the speed of cars on campus V ≤ Vp And L ≥10m, the safety warning device does not work; b. If the speed of cars on campus V ≤ Vp And L <10m, the light warning component in the safety warning device works; c. If the speed of cars on campus meets the conditions Vp <V ≤10km / h and △ L ≥20m, the light warning component in the safety warning device works, and the speed display device displays the real-time speed; d. If the speed of cars on campus meets the conditions Vp <V ≤10km / h and △ L <20m, the sound warning component in the safety warning device works, and the speed display device displays the real-time speed and the words "Note the distance"; e. If the speed of cars on campus V >10km / h, the pedestrian safety warning device works, and the speed display shows the real-time speed and the words "overspeed brake"; in, P is the number of people in the lane of the detection area, in units of people; △L is the distance between the vehicle and the pedestrian, in meters; V is the vehicle speed, in km / h; Vp is the pedestrian walking speed, in km / h, and the pedestrian walking speed is set to 5 km / h; T is time.
6. The warning method of the campus pedestrian safety warning device according to claim 4, characterized in that: The warning light component (4) provides an alarm in the form of a flashing yellow light, and the sound warning component (5) provides an alarm in the form of "a car is approaching, pull over".