Zebra crossing intelligent pedestrian sensing device integrated with visual detection

Abstract

The invention relates to the technical field of traffic safety, and discloses a zebra crossing intelligent pedestrian sensing device integrated with visual inspection, which comprises a zebra crossing assembly and a ground control pile, the zebra crossing assembly comprises a mounting plate embedded in a road surface, and the upper surface of the mounting plate is provided with a plurality of step notches; a plurality of step notches are formed in the mounting plate, floating pedals are movably mounted in the step notches, a plurality of lifting sensors are fixedly mounted in the mounting plate, the floating pedals are fixedly mounted at the telescopic ends of the lifting sensors respectively, and a detection pipe and a flow sensor are fixedly mounted in the mounting plate. According to the sensing device, the liquid medium is input into the detection pipe at different flows through the lifting sensors at all positions, then the flow of the liquid medium is detected, the position of a pedestrian is sensed, and due to the fact that movement of the pedestrian has the continuous characteristic, the measured flow data of the liquid medium can be calculated and analyzed in an overlapped mode; and the use requirements of sensing the positions of one-way pedestrians and multiple pedestrians are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of traffic safety, and particularly relates to a zebra crossing intelligent pedestrian sensing device integrated with visual detection. BACKGROUND

[0002] Traffic accidents occur frequently, and most of them are caused by the friction between pedestrians and vehicles at traffic intersections. Therefore, it is necessary to monitor traffic intersections for traffic safety. The zebra crossing area is an important part of the traffic intersection and is the area where pedestrians and vehicles interact most frequently. Therefore, it is crucial to sense and warn pedestrians and vehicles in the zebra crossing area. In the prior art, a patent document with publication number CN106157606B discloses a biological sensing zebra crossing prompt pile. The zebra crossing prompt pile includes a stand, an excitation wire, a sensing wire, a lead wire, a pulse signal generator, a triode, a step-up transformer, a processor, an alarm, and a signal light module. The excitation wire and the sensing wire are arranged in parallel in the stand. The excitation wire is used to form an induced electric field, and the sensing wire is located in the induced electric field to sense the information of the change in the induced electric field caused by the human biological magnetic field and transmit the sensed induced electric field information to the processor. The processor is used to receive the induced electric field information sensed by the sensing wire and determine whether to start the alarm according to the information. The biological sensing zebra crossing prompt pile can remind pedestrians who have passed or are close to the prompt pile to pay attention to safety when the red light is on. Moreover, it can adjust the working parameters automatically, fully adapt to the interference of the external environment, and eliminate false positives and false negatives caused by small animals, non-biological objects, and natural climate.

[0003] The above-mentioned scheme sets a prompt pile at the zebra crossing intersection, which cannot sense whether there are pedestrians on the zebra crossing. Moreover, it lacks the parameters of the position of pedestrians on the zebra crossing, and the traffic parameters cannot be optimized. Therefore, it is difficult to ensure the safety of the pedestrian and vehicle crossing behavior and improve the efficiency of the pedestrian and vehicle crossing behavior. Based on this, the existing zebra crossing has the problem of being difficult to sense the moving position of pedestrians, which needs to be solved urgently. SUMMARY

[0004] The present application relates to the technical field of traffic safety, and particularly relates to a zebra crossing intelligent pedestrian sensing device integrated with visual detection.

[0005] In order to achieve the above object, the present application adopts the following technical scheme: a zebra crossing intelligent pedestrian sensing device integrated with visual detection, comprising a zebra crossing assembly and a ground control pile, the zebra crossing assembly comprises a mounting plate embedded in the road surface, the upper surface of the mounting plate is provided with a plurality of stepped notches, and a floating tread plate is movably installed in each stepped notch, a plurality of lifting sensors are fixedly installed in the interior of the mounting plate, each floating tread plate is fixedly installed on the telescopic end of the lifting sensor, a detection tube and a flow sensor are fixedly installed in the interior of the mounting plate, each lifting sensor is in communication with the detection tube, and the flow sensor is used to measure the flow size in the detection tube.

[0006] The interior of the ground control pile is fixedly installed with a lamp plate, a single-chip microcomputer module and a visual detection camera, a plurality of lamp bodies are arranged in an array on the lamp plate, and the arrangement order and position of each lamp body and each lifting sensor are one-to-one corresponding.

[0007] Each lifting sensor delivers liquid medium into the detection tube at different flow values, the flow sensor detects the different flow values of the liquid medium and guides the detection signal into the single-chip microcomputer module, the single-chip microcomputer module is used to control the opening and closing of each lamp body, the visual detection camera is used to detect the image signal of the lamp plate and convert the image signal of the lamp plate into digital signal output, the visual detection camera does not directly detect the live monitoring picture of the zebra crossing, and the influence of the environment is small, the design is used in cooperation with the visual detection of the existing traffic monitoring, and the defects of blurred picture and inaccurate visual detection of traffic monitoring in rainy days are made up.

[0008] Preferably, the lifting sensor comprises a cylinder and a telescopic rod, the cylinder is fixedly installed in the mounting plate, the telescopic rod is slidably inserted into the cylinder, the interior of the cylinder is a liquid storage cavity, a piston is slidably installed in the interior of the liquid storage cavity, the two ends of the telescopic rod are fixedly connected with the piston and the floating tread plate respectively, a supporting spring is arranged on the upper side of the cylinder, the floating tread plate is lifted by the supporting spring, the cross-sectional dimension of the liquid storage cavity in the plurality of lifting sensors increases or decreases successively, the flow of the detected liquid medium changes in an increasing or decreasing manner, and the moving direction of the pedestrian is facilitated to be identified through the change rule.

[0009] Preferably, the piston divides the liquid storage cavity into an upper chamber and a lower chamber, the lower chamber of the liquid storage cavity is in communication with the detection tube, a liquid storage tank is fixedly installed in the interior of the mounting plate, the lower chamber of the liquid storage cavity is in communication with the liquid storage tank through a liquid supplementing pipe, a first one-way valve is installed on the detection tube, a second one-way valve is installed on the liquid supplementing pipe, and the upper chamber of the liquid storage cavity is in communication with the liquid storage tank through a reflux pipe.

[0010] The inside of the mounting plate is fixedly installed with a pumping cylinder, the inside of the pumping cylinder is slidably installed with a pumping plug, the surface of the pumping cylinder is fixedly installed with an electric push rod, the telescopic end of the electric push rod is fixedly connected with the pumping plug, the end of the detection tube away from the lifting inductor is in communication with the inner cavity of the pumping cylinder, the inner cavity of the pumping cylinder is in communication with the inner cavity of the liquid storage tank through an overflow pipe, the overflow pipe is installed with an overflow valve and a third one-way valve, and the liquid pipe is installed with a hydraulic valve.

[0011] Preferably, when the pedestrian walks on the floating treadle, any floating treadle is pressed down, the telescopic rod and the piston on the lower side of the any floating treadle move downward, the liquid medium in the detection tube flows, the flow sensor detects the flow value of the liquid medium, and the detection signal is introduced into the single-chip microcomputer module, the lamp body corresponding to the any floating treadle is controlled to be lighted by the single-chip microcomputer module, and the position information of the lighted lamp body is detected by the visual detection camera. When the pedestrian moves away from the any floating treadle, the telescopic rod and the piston on the lower side of the any floating treadle move upward under the action of the supporting spring, the liquid medium in the liquid storage tank enters the lower chamber of the storage cavity through the liquid supplement pipe, and the circulation of the liquid medium is realized.

[0012] Preferably, the upper surface of the floating treadle is of transparent material, each floating treadle is internally installed with a lamp tube, and the step notch of the mounting plate is installed with a plurality of contact sensors, under normal circumstances, the contact sensors are in an untriggered state, at this time, the total power supply of each lamp tube is in a conductive state controlled by the contact sensors, and the display state of each lamp tube is controlled by the single-chip microcomputer module, so that the display state of the lamp tube is displayed in the form of a flowing water lamp or local high brightness, thereby playing a role of guiding pedestrians to pass and warning.

[0013] When the any floating treadle is pressed down, the lamp body corresponding to the any floating treadle is controlled to be lighted by the single-chip microcomputer module, the position information of the lighted lamp body is detected by the visual detection camera, meanwhile, the lighting duration of the lamp tube in the any floating treadle is prolonged by the single-chip microcomputer module, the high-brightness display duration of the floating treadle is prolonged, the floating treadle has a prompting effect, and the vehicle is prevented from cutting in.

[0014] The hydraulic valve is closed, the electric push rod drives the pumping plug to move back and forth, the liquid medium in the detection tube is sucked into the pumping cylinder, the liquid medium is pressed into the liquid storage tank through the overflow pipe, all the floating treadles are driven to move downward, the floating treadle moves downward to trigger the contact sensor to switch to a triggered state, at this time, the total power supply of each lamp tube is cut off by the contact sensor, the light display of each floating treadle is extinguished in the case that there is no vehicle and no person, and energy is saved.

[0015] Preferably, when the electric push rod drives the pumping plug to move back and forth, the flow sensor detects the total output of the liquid medium in the lower chamber of each liquid storage cavity, and whether the action of each lifting sensor is normal is determined by the total output of the liquid medium, so that the function of self-checking is realized.

[0016] The present application has the following advantages: 1. The sensing device provided by the present application sets lifting sensors under each floating pedal, inputs liquid medium into the detection tube at different flow rates through the lifting sensors at different positions, and then senses the position of pedestrians by detecting the flow rate of the liquid medium. Since the movement of pedestrians has a continuous characteristic, the flow rate data of the measured liquid medium can be superimposed and analyzed to meet the use requirements of sensing single pedestrian and multiple pedestrian positions. This design mainly uses a hydraulic system for control, can well adapt to complex outdoor environments, and ensures stable and reliable operation.

[0017] 2. The sensing device provided by the present application has the cross-sectional dimensions of the liquid storage cavities in the multiple lifting sensors increasing or decreasing in turn, and the flow rate of the detected liquid medium changes in an increasing or decreasing manner. Through this change rule, the moving direction of pedestrians can be easily identified. In the case of a long zebra crossing and few pedestrians at the intersection, after determining the moving direction of the pedestrians, part of the lanes can be given priority to release, thereby solving the problem of excessive vehicle waiting time causing traffic congestion and providing conditions for optimizing traffic parameters and relieving traffic pressure.

[0018] 3. The sensing device provided by the present application sets a lamp panel and a visual detection camera, uses whether the lamp body on the lamp panel is lit to display the position of pedestrians, and then uses the visual detection camera to visually analyze the image signal of the lamp panel to determine the pedestrian information. The visual detection camera does not directly detect the live monitoring picture of the zebra crossing, and is less affected by the environment. This design is used in cooperation with the visual detection of the existing traffic monitoring to make up for the defects of blurred picture and inaccurate visual detection in rainy days.

[0019] 4. The sensing device provided by the present application sets components such as lifting sensors, liquid storage tanks, and pumping cylinders. When pedestrians pass through the zebra crossing, the lifting sensors lift the floating pedals to sense the position of pedestrians, and at the same time, the lamp tubes are lit to display in a flowing water lamp or local highlight display state, thereby playing a role in guiding pedestrians to pass through and warning. When vehicles pass through, the pumping cylinders suck the liquid medium to make the telescopic end of the lifting sensor drop, so that the floating pedal falls down to avoid vehicle bumping, and at the same time, the lamp tubes are extinguished in linkage. Moreover, during the switching process of each traffic signal, all the floating pedals perform the action of active lifting and active falling. In this process, the flow sensor can determine whether the action of each lifting sensor is normal by the total output of the liquid medium, so as to realize the function of self-checking, discover faults in time for timely maintenance, and avoid traffic accidents caused by equipment failure. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The three-dimensional structure diagram of the induction device provided by the present application is shown in the figure. Figure 2 The partial front view structure diagram of the induction device provided by the present application is shown in the figure. Figure 3 The partial front view structure diagram of the ground control pile provided by the present application is shown in the figure. Figure 4 The system diagram of the induction device provided by the present application is shown in the figure. Figure 5 The top view structure diagram of the lamp plate provided by the present application is shown in the figure. Figure 6 The top view structure diagram of the induction device provided by the present application is shown in the figure. Figure 1 Figure 7 The top view structure diagram of the induction device provided by the present application is shown in the figure. Figure 2 Figure 8 The top view structure diagram of the induction device provided by the present application is shown in the figure. Figure 3 Figure 9 The schematic diagram of the cylinder and the detection tube provided by the present application is shown in the figure. Figure 10 The three-dimensional schematic diagram of the assembled mounting plate provided by the present application is shown in the figure.

[0021] In the figure: 1 ground control pile, 2 mounting plate, 3 floating pedal, 4 lifting inductor, 5 detection tube, 6 flow sensor, 7 lamp plate, 8 single-chip microcomputer module, 9 visual detection camera, 10 lamp body, 11 cylinder, 12 telescopic rod, 13 piston, 14 supporting spring, 15 liquid storage tank, 16 first one-way valve, 17 liquid supplementing pipe, 18 second one-way valve, 19 backflow pipe, 20 pumping cylinder, 21 pumping plug, 22 electric push rod, 23 overflow pipe, 24 overflow valve, 25 third one-way valve, 26 hydraulic valve, 27 lamp tube, 28 contact sensor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0023] ​​​In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] Referring to Figures 1-10 , a zebra crossing intelligent pedestrian sensing device integrated with visual detection includes a zebra crossing assembly and a ground control pile 1, the zebra crossing assembly includes a mounting plate 2 buried in the road surface, the upper surface of the mounting plate 2 is provided with a plurality of stepped grooves, and a floating tread 3 is movably installed in each stepped groove, a plurality of lifting sensors 4 are fixedly installed in the interior of the mounting plate 2, each floating tread 3 is fixedly installed on the telescopic end of the lifting sensor 4, a detection tube 5 and a flow sensor 6 are fixedly installed in the interior of the mounting plate 2, each lifting sensor 4 is in communication with the detection tube 5, and the flow sensor 6 is installed on the surface of the detection tube 5.

[0025] Among them, as Figure 4 shown, the lifting sensor 4 includes a cylinder body 11 and a telescopic rod 12, the cylinder body 11 is fixedly installed in the mounting plate 2, the telescopic rod 12 is slidably inserted into the cylinder body 11, the interior of the cylinder body 11 is a liquid storage cavity, a piston 13 is slidably installed in the interior of the liquid storage cavity, the two ends of the telescopic rod 12 are fixedly connected with the piston 13 and the floating tread 3 respectively, a supporting spring 14 is arranged on the upper side of the cylinder body 11, the floating tread 3 is lifted by the supporting spring 14, the cross-sectional dimensions of the liquid storage cavities in the plurality of lifting sensors 4 increase or decrease successively, the lifting sensors 4 are respectively marked as #1, #2, #3...#n, and the cross sections of the liquid storage cavities are respectively S1, S2, S3...Sn.

[0026] The piston 13 divides the liquid storage cavity into an upper chamber and a lower chamber, the lower chamber of the liquid storage cavity is in communication with the detection tube 5, a liquid storage tank 15 is fixedly installed in the interior of the mounting plate 2, the lower chamber of the liquid storage cavity is in communication with the liquid storage tank 15 through a liquid supplementing pipe 17, a first one-way valve 16 is installed on the detection tube 5, a second one-way valve 18 is installed on the liquid supplementing pipe 17, the upper chamber of the liquid storage cavity is in communication with the liquid storage tank 15 through a reflux pipe 19, for example, the volume of the lower chamber of the #1 lifting sensor 4 is V1, and the volume of the lower chamber of the #n lifting sensor 4 is Vn.

[0027] Referring to Figure 3 , the interior of the ground control pile 1 is fixedly installed with a lamp panel 7, a single-chip microcomputer module 8 and a visual detection camera 9, as Figure 5As shown, the lamp panel 7 is arranged in an array form with a plurality of lamp bodies 10, and the labels of the lamp bodies 10 are K1, K2, K3...Kn respectively. The arrangement sequence and position of the plurality of lifting sensors 4 and the lamp bodies 10 are one-to-one corresponding, as shown in the following table: When the pedestrian walks on the floating treadle 3, any floating treadle 3 is depressed, the telescopic rod 12 and the piston 13 at the lower side of any floating treadle 3 move downward, pushing the liquid medium in the detection tube 5 to flow, the flow sensor 6 detects the flow value of the liquid medium, and the detection signal is introduced into the single-chip microcomputer module 8, the lamp body 10 corresponding to any floating treadle 3 is controlled to be lighted by the single-chip microcomputer module 8, and the position information of the lighted lamp body 10 is detected by the visual detection camera 9; When the pedestrian moves away from any floating treadle 3, the telescopic rod 12 and the piston 13 at the lower side of any floating treadle 3 move upward under the action of the supporting spring 14, the liquid medium in the liquid storage tank 15 enters the lower chamber of the liquid storage cavity through the liquid supplementing pipe 17. It should be noted that the lifting height of the floating treadle 3 can be designed to be a smaller height difference according to actual needs, so that the piston 13 has a certain displacement distance and does not affect the pedestrian's passage, or the design of the raised height on the blind sidewalk is referred to, which is not introduced here.

[0028] When the pedestrian walks on the floating treadle 3, the plurality of lifting sensors 4 are subjected to a downward pressure, each lifting sensor 4 delivers the liquid medium into the detection tube 5 at different flow values, the flow sensor 6 detects the different flow values of the liquid medium, and the detection signal is introduced into the single-chip microcomputer module 8, the opening and closing of each lamp body 10 is controlled by the single-chip microcomputer module 8, and the image signal of the lamp panel 7 is detected by the visual detection camera 9, and the image signal of the lamp panel 7 is converted into a digital signal output.

[0029] Specifically, according to Bernoulli's theorem, the sum of the pressure potential energy, kinetic energy and potential energy of any two points on the flow line of the fluid remains unchanged in the flow of the fluid ignoring the viscous loss, and the Bernoulli equation is: p+ρgh+(1 / 2)*ρv^2=c Wherein, p, ρ, v are the pressure, density and velocity of the fluid respectively; h is the vertical height; g is the acceleration of gravity; c is a constant; Reference Figure 9 , the cross-sectional area S0 of the detection tube 5 is less than S1, the pressure in the cylinder body 11 is high, the flow rate is slow, the pressure in the detection tube 5 is low, and the flow rate is fast, and similarly, Figure 4 As shown, V1

[0030] Based on this, if Figure 6The pedestrian walks at A, the corresponding #1 lifting sensor 4 at A acts, the flow sensor 6 detects the flow value as A1, the flow sensor 6 guides the detection signal into the single-chip microcomputer module 8, the lighting of the lamp body 10 at K1 is controlled through the single-chip microcomputer module 8, the visual detection camera 9 detects the image signal of the lamp panel 7, so that the pedestrian at A is identified; If Figure 6 The pedestrian walks from A to B, the lifting sensors 4 of #1 to #n act in turn, the flow sensor 6 detects the flow value as A1 to An, the flow value detected by the flow sensor 6 changes in an increasing trend, otherwise, the pedestrian walks from B to A, the flow value detected by the flow sensor 6 changes in a decreasing trend, so that the moving direction of the pedestrian is identified according to the change trend of the flow value detected by the flow sensor 6; If Figure 6 The pedestrians walk at A and B, the corresponding #1 lifting sensor 4 at A and the corresponding #n lifting sensor 4 at B act, the flow sensor 6 detects the flow value as A1+An, the flow sensor 6 guides the detection signal into the single-chip microcomputer module 8, the lighting of all lamp bodies 10 between K1 and Kn is controlled through the single-chip microcomputer module 8, the visual detection camera 9 detects the image signal of the lamp panel 7, so that the pedestrians in the area between A and B are identified, and the multi-person identification function is achieved.

[0031] The lifting sensor 4 is arranged under each floating pedal 3, the lifting sensor 4 at each position inputs liquid medium to the detection pipe 5 at different flow rates, the flow rate of the liquid medium is detected, the position of the pedestrian is sensed, the flow data of the measured liquid medium can be superimposed and analyzed due to the continuous characteristics of the movement of the pedestrian, the use demand of sensing single pedestrian and multiple pedestrian positions is met, the design mainly uses a hydraulic system control, can well adapt to the complex outdoor environment, and ensures stable and reliable operation.

[0032] The cross-sectional dimensions of the liquid storage cavities in the plurality of lifting sensors 4 increase or decrease in turn, the flow of the detected liquid medium changes in an increasing or decreasing manner, the change law is used to facilitate the identification of the moving direction of the pedestrian, in the case that the zebra crossing at the intersection is long and the pedestrians are few, after the moving direction of the pedestrian is determined, part of the lanes can be preferentially released, the problem of too much vehicle waiting time and causing traffic congestion is solved, and conditions for optimizing traffic parameters and relieving traffic pressure are provided.

[0033] The position of the pedestrian is displayed by whether the lamp body 10 on the lamp plate 7 is lighted or not, and the information of the pedestrian is determined by visual analysis of the image signal of the lamp plate 7 by the visual detection camera 9, which does not directly detect the real picture of the zebra crossing and is less affected by the environment, and the design is used in cooperation with the visual detection of the existing traffic monitoring, which makes up for the defects of blurred picture and inaccurate visual detection in rainy days.

[0034] In the embodiment, the pumping cylinder 20 is fixedly installed in the inside of the mounting plate 2, the pumping plug 21 is slidably installed in the inside of the pumping cylinder 20, the electric push rod 22 is fixedly installed on the surface of the pumping cylinder 20, the telescopic end of the electric push rod 22 is fixedly connected with the pumping plug 21, the end of the detection tube 5 away from the lifting inductor 4 is communicated with the inner cavity of the pumping cylinder 20, the inner cavity of the pumping cylinder 20 is communicated with the inner cavity of the liquid storage tank 15 through the overflow pipe 23, the overflow valve 24 and the third one-way valve 25 are installed on the overflow pipe 23, and the hydraulic valve 26 is installed on the liquid supplementing pipe 17.

[0035] In the embodiment, the upper surface of the floating treadle 3 is of transparent material, the lamp tube 27 is installed in the inside of each floating treadle 3, and the plurality of contact sensors 28 are installed in the stepped groove of the mounting plate 2. Figure 7 In the embodiment, the upper surface of the floating treadle 3 is of transparent material, the lamp tube 27 is installed in the inside of each floating treadle 3, and the plurality of contact sensors 28 are installed in the stepped groove of the mounting plate 2. Figure 8 In the embodiment, the upper surface of the floating treadle 3 is of transparent material, the lamp tube 27 is installed in the inside of each floating treadle 3, and the plurality of contact sensors 28 are installed in the stepped groove of the mounting plate 2.

[0036] When any floating treadle 3 is depressed, the lamp body 10 corresponding to the floating treadle 3 is lighted by the single-chip microcomputer module 8, the position information of the lighted lamp body 10 is detected by the visual detection camera 9, and the light-on duration of the lamp tube 27 in any floating treadle 3 is prolonged by the single-chip microcomputer module 8.

[0037] In use, reference is made to Figure 4, the hydraulic valve 26 is closed, and the electric push rod 22 drives the pumping plug 21 to move back and forth, sucking the liquid medium in the detection tube 5 into the pumping cylinder 20, and then pressing the liquid medium into the liquid storage tank 15 through the overflow pipe 23, driving all floating pedals 3 to move downward, and the downward movement of the floating pedals 3 triggers the contact sensor 28 to switch to the trigger state. At this time, if the conditions for all contact sensors 28 to be triggered are met, the contact sensor 28 cuts off the total power supply of each lamp 27. When there is no car or people, the light display of each floating pedal 3 is extinguished to save energy.

[0038] When the electric push rod 22 drives the pumping plug 21 to move back and forth, the flow sensor 6 detects the total output of the liquid medium in the lower chamber of each liquid storage chamber. The total output of the liquid medium is used to determine whether the operation of each lifting sensor 4 is normal. If the total flow output detected by the flow sensor 6 lacks A1, it can be inferred that there is a fault in the lifting sensor 4 at #1.

[0039] The sensing device proposed in the present invention is provided with components such as a lifting sensor 4, a liquid storage tank 15 and a pumping cylinder 20. When a pedestrian passes through the zebra crossing, the lifting sensor 4 lifts the floating pedal 3 to sense the pedestrian's position. At the same time, the light tube 27 is lit, and displayed in a flowing light or partially highlighted state, which plays a role in guiding pedestrians to pass and warning. When a vehicle passes, the pumping cylinder 20 sucks the liquid medium, causing the telescopic end of the lifting sensor 4 to drop, causing the floating pedal 3 to fall, thereby preventing the vehicle from bumping. At the same time, the linked light tubes 27 are extinguished. Since the time interval of the traffic light is fixed and regular, the start and stop of the pumping cylinder 20 can be controlled according to the law of the traffic light to achieve the matching of the lifting and lowering rhythm of the floating pedal 3 with the traffic signal. Moreover, during each switching process of the traffic lights, all the floating pedals 3 perform an active lifting and lowering action. During this process, the flow sensor 6 can determine whether the action of each lifting sensor 4 is normal through the total output of the liquid medium, thereby realizing the self-inspection function, timely discovering faults and repairing them, and avoiding traffic accidents caused by equipment failures.

[0040] It should be noted that the technical effect achieved by the above technical solution is under the premise that vehicles and pedestrians comply with traffic rules. The movement of pedestrians is uncertain and there are situations where traffic rules are not complied with. It is also necessary to strengthen the publicity and training of traffic rules and strengthen traffic management, and combine the joint efforts of various social forces to create an orderly and safe traffic order.

[0041] In order to facilitate installation, the mounting plate 2 proposed by the present invention can be designed as an assembled structure, such as Figure 10 As shown, the internal structure of the mounting plate 2 is the same as above and will not be described in detail here.

[0042] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An intelligent pedestrian sensing device for zebra crossings with integrated visual detection, comprising a zebra crossing assembly and a ground control stake (1), characterized in that: The zebra crossing assembly comprises a mounting plate (2) buried in the road surface, a plurality of step notches are provided on the upper surface of the mounting plate (2), and a floating pedal (3) is movably installed in each step notch, a plurality of lifting sensors (4) are fixedly installed inside the mounting plate (2), and each floating pedal (3) is fixedly installed on the telescopic end of the lifting sensor (4), and a detection tube (5) and a flow sensor (6) are fixedly installed inside the mounting plate (2), each lifting sensor (4) is connected to the detection tube (5), and the flow rate in the detection tube (5) is measured by the flow sensor (6); A light board (7), a single-chip computer module (8) and a visual detection camera (9) are fixedly installed inside the ground control pile (1); a plurality of light bodies (10) are arranged in an array on the light board (7); and the arrangement order and position of the plurality of lifting sensors (4) and the light bodies (10) correspond one to one; Each lifting sensor (4) delivers a liquid medium into the detection tube (5) at a different flow rate value. The flow sensor (6) detects the different flow rates of the liquid medium and imports the detection signal into the single-chip microcomputer module (8). The single-chip microcomputer module (8) controls the opening and closing of each lamp body (10). The visual detection camera (9) detects the image signal of the lamp board (7) and converts the image signal of the lamp board (7) into a digital signal output.

2. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 1, characterized in that: The lifting sensor (4) includes a cylinder body (11) and a telescopic rod (12), the cylinder body (11) is fixedly installed in the mounting plate (2), the telescopic rod (12) is slidably inserted into the cylinder body (11), the interior of the cylinder body (11) is a liquid storage chamber, and a piston (13) is slidably installed in the interior of the liquid storage chamber, and the two ends of the telescopic rod (12) are fixedly connected to the piston (13) and the floating pedal (3), respectively. A support spring (14) is provided on the upper side of the cylinder body (11), and the floating pedal (3) is lifted by the support spring (14). The cross-sectional dimensions of the liquid storage chambers in the multiple lifting sensors (4) increase or decrease in sequence.

3. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 2, characterized in that: The piston (13) divides the liquid storage chamber into an upper chamber and a lower chamber. The lower chamber of the liquid storage chamber is connected to the detection tube (5). A liquid storage tank (15) is fixedly installed inside the mounting plate (2). The lower chamber of the liquid storage chamber is connected to the liquid storage tank (15) through a liquid infusion tube (17). A first one-way valve (16) is installed on the detection tube (5), and a second one-way valve (18) is installed on the liquid infusion tube (17). The upper chamber of the liquid storage chamber is connected to the liquid storage tank (15) through a reflux tube (19).

4. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 3, characterized in that: A pumping cylinder (20) is fixedly installed inside the mounting plate (2), a pumping plug (21) is slidably installed inside the pumping cylinder (20), an electric push rod (22) is fixedly installed on the surface of the pumping cylinder (20), the telescopic end of the electric push rod (22) is fixedly connected to the pumping plug (21), the end of the detection tube (5) away from the lifting sensor (4) is connected to the inner cavity of the pumping cylinder (20), the inner cavity of the pumping cylinder (20) is connected to the inner cavity of the liquid storage tank (15) through the overflow pipe (23), the overflow pipe (23) is installed with an overflow valve (24) and a third one-way valve (25), and the liquid replenishing pipe (17) is installed with a hydraulic valve (26).

5. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 4, characterized in that: When a pedestrian walks on the floating pedals (3), any floating pedal (3) is pressed down, and the telescopic rod (12) and the piston (13) on the lower side of any floating pedal (3) move downward, pushing the liquid medium in the detection tube (5) to flow, and the flow sensor (6) detects the flow value of the liquid medium and imports the detection signal into the single-chip microcomputer module (8). The single-chip microcomputer module (8) controls the lighting of the lamp body (10) corresponding to any floating pedal (3), and the visual detection camera (9) detects the position information of the lit lamp body (10); When a pedestrian moves away from any of the floating pedals (3), the telescopic rod (12) and the piston (13) on the lower side of any of the floating pedals (3) move upward under the action of the support spring (14), and the liquid medium in the liquid storage tank (15) enters the lower chamber of the liquid storage cavity through the liquid infusion pipe (17).

6. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 5, characterized in that: The upper surface of the floating pedal (3) is made of a transparent material. A light tube (27) is installed inside each floating pedal (3). A plurality of contact sensors (28) are installed in the step groove of the mounting plate (2). Under normal conditions, the contact sensors (28) are in an untriggered state. At this time, the contact sensors (28) control the total power supply of each light tube (27) to be in an on state, and the single-chip microcomputer module (8) controls the display state of each light tube (27).

7. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 6, characterized in that: When any of the floating pedals (3) is pressed down, the single-chip microcomputer module (8) controls the lamp body (10) corresponding to the any of the floating pedals (3) to light up, and the visual detection camera (9) detects the position information of the lit lamp body (10). At the same time, the single-chip microcomputer module (8) controls the lighting time of the lamp tube (27) in any of the floating pedals (3) to be extended.

8. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 7, characterized in that: The hydraulic valve (26) is closed, and the electric push rod (22) drives the pumping plug (21) to move back and forth, sucking the liquid medium in the detection tube (5) into the pumping cylinder (20), and then pressing the liquid medium into the liquid storage tank (15) through the overflow pipe (23), driving all the floating pedals (3) to move downward, and the floating pedals (3) move downward to trigger the contact sensor (28) to switch to the trigger state. At this time, the contact sensor (28) cuts off the total power supply of each lamp (27).

9. The zebra crossing intelligent pedestrian sensing device with integrated visual detection according to claim 8, characterized in that: When the electric push rod (22) drives the pumping plug (21) to move back and forth, the flow sensor (6) detects the total output of the liquid medium in the lower chamber of each liquid storage chamber, and determines whether the operation of each lifting sensor (4) is normal based on the total output of the liquid medium.

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