Pedestrian crossing safety early warning device

Abstract

The utility model discloses a pedestrian crossing safety early warning device, which belongs to the technical field of road safety early warning and comprises an early warning pile body, the early warning pile body is fixedly arranged at preset positions at two ends of a pedestrian crossing, a solar power generation component is arranged at the top of the early warning pile body, and an induction identification component is arranged on the outer surface of the early warning pile body. A laser warning module is arranged at the bottom of the induction recognition assembly, and an intelligent energy-saving assembly, a wireless communication and remote control assembly and a storage battery are arranged in the early warning pile body. The pedestrian crossing safety early warning device can effectively improve pedestrian crossing safety, is good in energy-saving effect and strong in adaptability, and simultaneously has cooperation and remote control functions.

Description

TECHNICAL FIELD

[0001] The utility model relates to road safety early warning technical field especially is involved in a pedestrian street crossing safety early warning device. BACKGROUND

[0002] In the existing traffic environment, the pedestrian street crossing safety problem has been the focus and difficulty of traffic management. In severe weather conditions, such as heavy rain night, rainwater blurs the driver's vision, and the slippery road also affects the vehicle braking performance; in the heavy fog and sand weather, the visibility is extremely low, and the driver is difficult to detect the pedestrian on the zebra crossing in advance. At the same time, with the popularity of smart phones, the number of pedestrians who focus on low headway is increasing, and these pedestrians often ignore the traffic conditions. The above-mentioned situation often leads to the driver of the vehicle passing through the intersection to be taken by surprise, thereby causing traffic accidents.

[0003] At present, part of the pedestrian crossing or right-turn pedestrian crossing without red and green lights lacks effective safety warning facilities, and cannot timely remind the driver to pay attention to the pedestrian in front. The traditional traffic warning sign is greatly discounted in warning effect under severe weather or complex environment. Although some places set up ordinary street lamps, the driver still cannot accurately grasp the specific position and dynamic of the pedestrian on the zebra crossing.

[0004] In order to protect the safety of pedestrians crossing the intersection and solve the potential hidden danger of urban traffic, some new pedestrian crossing safety warning devices appear in the market. However, the existing warning devices still have some shortcomings, such as high energy consumption, unable to intelligently adjust the working state according to the actual situation; the sensing accuracy of part of the device is not high enough, and misjudgment is easy to occur; the cooperative working ability between the devices needs to be strengthened, and the overall and efficient warning cannot be realized. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a pedestrian street crossing safety early warning device, which can effectively improve the safety of pedestrians crossing the street, has good energy saving effect, strong adaptability, and has the functions of cooperation and remote control.

[0006] In order to realize the above-mentioned purpose, the utility model provides a pedestrian street crossing safety early warning device, which comprises a warning pile body, the warning pile body is fixedly arranged at the preset position at both ends of the pedestrian crossing, the top of the warning pile body is provided with a solar power generation assembly, the outer surface of the warning pile body is provided with an induction identification assembly, the bottom of the induction identification assembly is provided with a laser warning assembly, and the warning pile body is provided with an intelligent energy-saving assembly, a wireless communication and remote control assembly and a storage battery.

[0007] Preferably, the induction identification assembly comprises a laser ranging sensor, the laser ranging sensor is electrically connected with the control unit built-in the warning pile body, and is used for detecting whether the pedestrian enters the pedestrian crossing area.

[0008] Preferably, the laser ranging sensor detects a range of 10-18 meters covering the pedestrian crossing and the surrounding area, and the laser ranging sensor is built-in anti-interference algorithm chip, the anti-interference algorithm chip is electrically connected with the control unit, for filtering the interference signal of non-pedestrian target.

[0009] Preferably, the laser warning assembly includes an infrared laser emitter, which is installed along the vertical direction of the pedestrian crossing, and its height is matched with the calf position of the pedestrian, and the infrared laser emitter is signal connected with the control unit, for emitting red laser beam after receiving the trigger signal of the induction recognition assembly.

[0010] Preferably, the infrared laser emitter is provided with 28 laser emission ports arranged in an array for forming a continuous red area projection, and the infrared laser emitter responds to the trigger signal of the control unit within 0.2 seconds.

[0011] Preferably, the intelligent energy-saving assembly integrates an ambient light sensor and a power consumption control circuit, and the ambient light sensor and the power consumption control circuit are electrically connected with the control unit respectively, for adjusting the working mode of the device according to the ambient light intensity and the pedestrian detection state.

[0012] Preferably, the power consumption control circuit of the intelligent energy-saving assembly is electrically connected with the induction recognition assembly and the laser warning assembly, when the ambient light sensor detects that the light intensity is greater than or equal to 500 lux, the laser warning assembly is controlled to be in standby state, and only the induction recognition assembly is in low-power operation;

[0013] When the ambient light sensor detects that the light intensity is less than 500 lux, the laser warning assembly is controlled to be in a standby state, and the laser emission is started after the induction recognition assembly detects the pedestrian, and the laser is extinguished after the pedestrian leaves.

[0014] Preferably, the wireless communication and remote control assembly includes a short-range wireless communication unit, a 4G communication unit and a fault reporting circuit;

[0015] The short-range wireless communication unit adopts Bluetooth or ZigBee protocol, for realizing the cooperative triggering between two devices, the 4G communication unit is built-in Internet of Things SIM card and network client to establish connection, the fault reporting circuit is electrically connected with the control unit, for transmitting the device fault information to the network client, the fault reporting circuit integrates a fault detection chip, and the fault detection chip is electrically connected with the power supply circuit of the induction recognition assembly, the laser warning assembly and the intelligent energy-saving assembly, for real-time monitoring the working state of each component.

[0016] Preferably, the solar power generation assembly comprises a fixed support and a solar power generation panel mounted on the top of the fixed support, the solar power generation panel is electrically connected with a storage battery, the bottom of the fixed support is fixedly connected with a rotating disc, the top of the early warning pile body is provided with a rotating shaft matched with the rotating disc, and the side surface of the rotating disc is uniformly provided with four threaded holes.

[0017] Preferably, the device further comprises a protective shell and a fixed base, the protective shell is made of IP66 grade waterproof and dustproof material, and the outer surface of the protective shell is provided with a sunscreen coating, and the fixed base is bolted with the ground or roadside infrastructure.

[0018] Therefore, the pedestrian crossing safety early warning device has the following technical effects:

[0019] Improve the safety of pedestrian crossing: through high-precision sensing and identification and eye-catching laser warning, the driver can be reminded of the pedestrians in front in various weather and environmental conditions, effectively reducing the accident rate of pedestrian crossing, and protecting the safety of pedestrians.

[0020] Intelligent energy saving: with intelligent energy saving function, automatically adjust the working mode according to the ambient light and pedestrian state, reduce the energy consumption, prolong the service life of the device, and also meet the concept of energy saving and environmental protection.

[0021] Collaborative work and remote control: the short distance wireless communication function realizes the collaborative warning between the devices, improves the comprehensiveness of the warning effect. 4G remote control and fault reporting function, convenient for management personnel to monitor and maintain the equipment, reduce the maintenance cost, and improve the management efficiency.

[0022] Strong adaptability: the device structure is reasonable, and the device is made of solid and durable materials, which can adapt to various harsh outdoor environments, without the need for large-scale modification of the road, and is convenient to install and maintain.

[0023] The technical scheme of the utility model will be further described in detail below by means of the drawings and examples. DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure schematic view of an embodiment of the pedestrian crossing safety early warning device of the utility model.

[0025] REFERENCE NUMERALS

[0026] 1, early warning pile body; 2, rotating disc; 3, threaded hole; 4, fixed support; 5, solar power generation panel; 6, laser ranging sensor; 7, infrared laser emitter. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model will be further described in detail below by means of the drawings and examples.

[0028] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Example 1

[0030] like Figure 1 As shown, this utility model provides a pedestrian crossing safety warning device, including a warning post body 1. The warning post body 1 is fixed to preset positions at both ends of a pedestrian crossing via a fixed base. The outer surface of the warning post body 1 is provided with a sensing and recognition component, and the bottom of the sensing and recognition component is provided with a laser warning component. During installation, both the sensing and recognition component and the laser warning component are positioned facing the pedestrian crossing, and the warning post bodies 1 at both ends of the pedestrian crossing are positioned opposite each other, thereby ensuring the normal warning function of the device.

[0031] The top of the early warning pile body 1 is equipped with a solar power generation component, which includes a fixed bracket 4 and a solar panel 5 mounted on top of the fixed bracket 4. The solar panel 5 is electrically connected to the internal battery of the device, and the electricity generated by the solar panel 5 is stored in the battery, providing the power foundation for the device. The bottom of the fixed bracket 4 is fixedly connected to the turntable 2. The top of the early warning pile body 1 is equipped with a rotating shaft, which matches the turntable 2. Four threaded holes 3 are evenly distributed on the side of the turntable 2. Fixing bolts are screwed into the threaded holes 3 to fix the turntable 2, so that it no longer rotates around the rotating shaft. This allows the solar panel 5 to face four different directions, making the installation position of the device unrestricted and highly adaptable.

[0032] After the warning pile body 1 is installed, the turntable 2 can be manually rotated to adjust the orientation of the solar power panel 5 so that it can better receive sunlight to generate electricity. Generally, when the solar panel 5 is facing south, the fixing bolt is screwed into the threaded hole 3 for fixing.

[0033] The inductive recognition assembly is used for accurately detecting whether a pedestrian enters a pedestrian crossing area, and avoids mis-triggering of non-pedestrian targets (such as fallen leaves, pets, and non-motor vehicles). The core element of the inductive recognition assembly is a laser ranging sensor 6, which is installed in a mounting groove of the early warning pile body 1 through a metal support, and the detection direction of the laser ranging sensor 6 is towards the pedestrian crossing and the surrounding area, and the detection range covers the entire zebra crossing. The maximum detection distance of the pedestrian is 18 m, and the height from the ground is 1.2 m, which can avoid the interference of ground debris.

[0034] The anti-interference algorithm chip in the laser ranging sensor 6 is electrically connected with the control unit (main chip model: STM32L431RCT6, low-power MCU) built in the device. The algorithm chip can filter the interference signals of non-pedestrian targets by analyzing the moving speed of the target (filtering motor vehicles with a speed greater than 10 m / s and static objects with a speed less than 0.5 m / s), and the contour size (filtering pets with a height less than 0.8 m and debris with a width less than 0.3 m). The mis-triggering rate is less than or equal to 0.1%.

[0035] The laser warning assembly actively emits red laser after detecting a pedestrian, providing visual warning for the driver (especially at night). A high-brightness infrared laser emitter 7 (wavelength 650 nm, output power 5 mW, meeting Class IIIa safety standards to avoid burning the human body) is installed in the lower fixed position of the early warning pile body along the vertical direction of the pedestrian crossing, and the installation height is 0.3-0.4 m from the ground, which is suitable for the calf position of an adult, ensuring that the laser projection can be clearly observed by the driver and not be blocked by the pedestrian.

[0036] The infrared laser emitter 7 is provided with 28 laser emission ports on the front surface, which are arranged in a 4-row and 7-column array (port spacing 5 mm). After being powered on, the infrared laser emitter 7 can form a continuous red area projection (forming a "red warning band" on the ground) with a width of 1.5 m and a length matching the pedestrian crossing. The infrared laser emitter 7 is connected with the control unit through an SPI signal, and the response time of the trigger signal is less than or equal to 0.2 seconds, ensuring quick warning after the pedestrian enters.

[0037] The intelligent energy-saving assembly adjusts the working mode according to the ambient light and the state of the pedestrian, reduces the power consumption, and prolongs the battery life. The intelligent energy-saving assembly integrates an ambient light sensor (model: BH1750, measurement range 0-65535 lux, accuracy ±20%) and a power consumption control circuit (composed of MOS tubes and relays), both of which are electrically connected with the control unit. The power consumption control circuit is also connected with the power supply end of the inductive recognition assembly and the laser warning assembly through wires.

[0038] Working mode adjustment:

[0039] When the ambient light sensor detects that the light intensity ≥ 500 lux (such as sunny day), the control unit makes the laser warning component in standby state (power consumption < 5 mA) through the power consumption control circuit, only maintaining the inductive recognition component low-power operation (laser ranging sensor intermittent work, detection 1 times per second, power consumption < 10 mA);

[0040] When the light intensity < 500 lux (such as night, rainy and foggy days), the laser warning component switches to the standby trigger state (power consumption < 15 mA), and the inductive recognition component switches to the continuous detection mode (detection 5 times per second); if a pedestrian is detected entering the coverage area, the control unit immediately triggers the laser emitter to work (power consumption < 500 mA), and after the pedestrian leaves the area (the sensor does not detect the pedestrian for 10 seconds), the laser is turned off and the standby trigger state is restored.

[0041] The wireless communication and remote control component includes a short-range wireless communication unit, a 4G communication unit, and a fault reporting circuit.

[0042] The short-range wireless communication unit adopts a ZigBee protocol module (model: CC2530, transmission distance ≤ 100 m, power consumption < 30 mA), and the two devices at both ends of the pedestrian crossing establish wireless connection through the module; when one of them detects a pedestrian, it can send a trigger signal to the other through ZigBee to realize synchronous start of the laser warning module at both ends, avoiding the driver's visual blind area caused by one-sided early warning.

[0043] The 4G communication unit adopts an industrial-grade 4G module (model: EC20, supports full network), and is connected with the control unit through the UART interface, which can upload the working state of the device to the cloud network client (such as mobile phone APP, computer management platform) in real time; the management personnel can remotely view the device location, running data, or send control instructions (such as manual trigger laser, adjust detection sensitivity) through the client.

[0044] The fault reporting circuit integrates a fault detection chip, the input end of which is connected with the power supply circuit (collecting voltage and current signals) of the inductive recognition component, the laser warning component, and the intelligent energy-saving component, and the output end is electrically connected with the control unit; when the power supply of a component is abnormal (such as no current for laser emitter, too low voltage for sensor) or working fault (such as communication interruption, no response for detection), the fault detection chip sends a fault signal to the control unit, which uploads the fault type (such as "laser module fault", "battery power loss", etc.) and the device location to the client through the 4G module, and triggers the client alarm (such as pop-up window, SMS reminder), which is convenient for timely maintenance.

[0045] The installation steps are as follows: at both ends of a pedestrian crossing without a traffic light or a right-turn pedestrian crossing, a suitable installation position is selected to ensure that the sensing and identifying assembly can clearly detect the action of pedestrians entering the zebra crossing; the main body of the device is fixed to the ground or roadside infrastructure through a matching installation base, the lines between various assemblies are connected, and the lines are ensured to be hidden and safe; after installation is completed, the device is debugged to ensure that the sensing and identifying assembly, the laser warning assembly and the like work normally.

[0046] The working process is as follows: when a pedestrian steps onto the zebra crossing, the laser ranging sensor 6 in the sensing and identifying assembly rapidly detects the pedestrian and transmits a signal to the control unit. After receiving the signal, the control unit triggers the laser warning assembly within 0.2 seconds, and the infrared laser emitter 7 emits 28 red laser lines to irradiate the shins of the pedestrian, forming a red area projection to warn the driver.

[0047] Meanwhile, if the device is connected to another device at the other end of the pedestrian crossing through wireless communication, the other device will also start the laser warning assembly synchronously. In the night or in an environment with relatively dark light, the ambient light sensor detects that the light intensity is low, and the device automatically enters the working state; in the daytime with sufficient light, the device is in a standby state, and only the sensing and identifying assembly remains in low-power operation. When the pedestrian leaves the zebra crossing, the sensing and identifying assembly detects that the pedestrian disappears, and the control unit controls the laser warning assembly to automatically extinguish the laser.

[0048] The management personnel can check the working state of the device through the network client at any time, and if the device fails, the network client will timely receive the fault alarm information so as to arrange maintenance personnel to perform maintenance.

[0049] The staff needs to regularly perform appearance inspection on the device, check whether the shell is damaged or deformed, and the like, replace the shell in a timely manner if there is a problem, check whether the installation support is firm, and tighten the installation support in a timely manner if it is loose, regularly clean the surfaces of the sensing and identifying assembly and the laser warning assembly to ensure that they work normally, and perform comprehensive function test on the device at intervals, including sensing and identifying accuracy, laser emission intensity and the like, and adjust and maintain in a timely manner if there is a problem.

[0050] Therefore, the pedestrian crossing safety warning device can effectively improve the crossing safety of pedestrians, has good energy-saving effect, high adaptability, and has the functions of cooperation and remote control.

[0051] It should be noted that the contents not elaborated in the utility model are all prior art and are well known to those skilled in the art.

[0052] It should be pointed out finally that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been explained in detail with reference to the preferred embodiments, ordinary skilled in the art should understand that: its still can modify or equivalent replace the technical solutions of the utility model, and these modifications or equivalent replacements also can not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. A pedestrian crossing safety warning device, characterized in that: The early warning pile body is fixedly arranged at a preset position at both ends of a pedestrian crossing, a solar power generation assembly is arranged at the top of the early warning pile body, an inductive identification assembly is arranged on the outer surface of the early warning pile body, a laser warning assembly is arranged at the bottom of the inductive identification assembly, and an intelligent energy-saving assembly, a wireless communication and remote control assembly and a storage battery are arranged in the early warning pile body.

2. The pedestrian crossing safety warning device according to claim 1, characterized in that: The inductive identification assembly comprises a laser ranging sensor, and the laser ranging sensor is electrically connected with a control unit arranged in the early warning pile body.

3. The pedestrian crossing safety warning device according to claim 2, wherein: The detection range of the laser ranging sensor covers the pedestrian crossing and a 10-18 m area around the pedestrian crossing, and an anti-interference algorithm chip is arranged in the laser ranging sensor, and the anti-interference algorithm chip is electrically connected with the control unit.

4. The pedestrian crossing safety warning device according to claim 3, wherein: The laser warning assembly comprises an infrared laser emitter, the infrared laser emitter is arranged along the vertical direction of the pedestrian crossing, and the height of the infrared laser emitter is matched with the position of the lower leg of a pedestrian, and the infrared laser emitter is signal-connected with the control unit.

5. The pedestrian crossing safety warning device according to claim 4, wherein, The infrared laser emitter is provided with 28 laser emission ports, the 28 laser emission ports are arranged in an array, and the response time of the infrared laser emitter to a trigger signal is less than or equal to 0.2 s.

6. The pedestrian crossing safety warning device according to claim 5, wherein: The intelligent energy-saving assembly is integrated with an ambient light sensor and a power consumption control circuit, and the ambient light sensor and the power consumption control circuit are electrically connected with the control unit respectively.

7. The pedestrian crossing safety warning device according to claim 6, wherein: The power consumption control circuit of the intelligent energy-saving assembly is electrically connected with the inductive identification assembly and the laser warning assembly respectively, when the ambient light sensor detects that the light intensity is greater than or equal to 500 lux, the laser warning assembly is controlled to be in a standby state, and only the inductive identification assembly is controlled to be in a low-power-consumption state; When the ambient light sensor detects that the light intensity is less than 500 lux, the laser warning assembly is controlled to be in a standby state, and the laser emission is started after the inductive identification assembly detects a pedestrian, and the laser is controlled to be turned off after the pedestrian leaves.

8. The pedestrian crossing safety warning device according to claim 7, wherein: The wireless communication and remote control assembly comprises a short-distance wireless communication unit, a 4G communication unit and a fault reporting circuit. The short-distance wireless communication unit adopts a Bluetooth or ZigBee protocol, the 4G communication unit is provided with an Internet of Things SIM card and is connected with a network client, the fault reporting circuit is electrically connected with the control unit, the fault reporting circuit is integrated with a fault detection chip, and the fault detection chip is electrically connected with the power supply circuit of the inductive identification assembly, the laser warning assembly and the intelligent energy-saving assembly.

9. The pedestrian crossing safety warning device of claim 8, wherein: The solar power generation assembly comprises a fixed support and a solar power generation panel arranged on the top of the fixed support, the solar power generation panel is electrically connected with the storage battery, the bottom of the fixed support is fixedly connected with a rotating disc, the top of the early warning pile body is provided with a rotating shaft, the rotating shaft is matched with the rotating disc, and four screw holes are uniformly distributed on the side surface of the rotating disc.

10. The pedestrian crossing safety warning device according to claim 9, wherein: The device further comprises a protective shell and a fixed base, the protective shell is made of an IP66-grade waterproof and dustproof material, and is provided with a sunscreen coating on the outer surface, and the fixed base is bolt-connected with the ground or roadside infrastructure.

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