CN213399988U

CN213399988U - Intelligent road safety early warning system

Info

Publication number: CN213399988U
Application number: CN202022715996.8U
Authority: CN
Inventors: 李未; 张城东
Original assignee: Nanchang Institute of Technology
Current assignee: Nanchang Institute of Technology
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-06-08
Anticipated expiration: 2030-11-20

Abstract

The utility model provides a wisdom road safety precaution system, include: the pedestrian detection module is used for detecting pedestrians who want to cross the road; the vehicle speed detection module is used for detecting a vehicle to pass through the zebra crossing and the vehicle speed; the main controller sends out early warning control signals based on signals detected by the pedestrian detection module or the vehicle speed detection module; the early warning module is used for making early warning based on the control of the main controller; and the wireless communication module is connected with the main controller and sends the early warning information to the mobile equipment of pedestrians or drivers. The utility model can carry out double warning, and has high safety factor; the device has no detection blind area, can completely cover the intersection, has high sensitivity and is not influenced by the external environment, and can effectively reduce potential safety hazards caused by adverse factors such as driving blind areas, weather and the like; the cost is low, the road traffic system can be popularized and used in cities, can also be popularized to traffic roads in suburbs, villages and towns, rural areas and the like, and reduces potential traffic safety hazards.

Description

Intelligent road safety early warning system

Technical Field

The utility model relates to a road safety control field especially relates to a wisdom road safety early warning system.

Background

The popularization and the use of the vehicle bring great convenience to the life of people, and simultaneously, the traffic pressure and the potential safety hazard of cities are increased. According to the information of Ministry of public Security, as long as 2020 and 6 months, motor vehicles in the whole country are kept in 3.6 hundred million vehicles, wherein 2.7 hundred million vehicles are available. Wherein the automobile keeping quantity of 69 cities in the whole country exceeds million, and 12 cities such as Beijing, Chengdu and the like exceed 300 million. According to the information of the ministry of public security, in 2019, 378781 people including death people, 89455 people and injury people, 431139 people have all the people suffered from pedestrian and motor vehicle traffic accidents in China, and the direct property loss is 14.9 million yuan. The safe traveling and harmony of pedestrians and vehicles in cities are in common, and become a topic of great concern.

In recent years, the country continuously improves traffic rules, increases the construction strength of urban road infrastructures, installs traffic lights, sets up traffic isolation devices, and implements measures such as pedestrian and vehicle shunting, so that the number of traffic accidents in cities is obviously reduced, and the safe traveling of pedestrians and vehicles is better guaranteed. However, the cardinality of vehicles and pedestrians is large in the city, the contradiction between pedestrians and vehicles is increased day by day, and the traffic accidents are still frequent. According to the data published by the national statistical bureau, the traffic accidents of pedestrians and vehicles in urban roads are mainly concentrated on crossroads and zebra crossings, especially at intersections without traffic lights. Although the pedestrians have the right of passing preferentially on the zebra crossing, a courtesy pedestrian sign is arranged in front of the zebra crossing in most cities, and a high-definition camera is installed to further restrict the driving behavior of a driver, the potential safety hazard on the zebra crossing still exists. On the one hand, the driver has poor sight due to weather reasons such as driving blind areas, night driving, rain, snow, fog and the like, and cannot adopt a correct processing method in time. On the other hand, pedestrians cannot accurately judge the safety distance between the pedestrian and the vehicle, part of the pedestrians have low safety consciousness, attention is not concentrated enough when crossing the road, and even the pedestrians are low to play mobile phones. In a traffic accident, a person is a main body, and only when the pedestrian and a driver acquire the information of the other side at the first time and take corresponding measures in time, the traffic safety problem on the zebra crossing can be effectively solved. Obviously, the conventional road transportation facilities cannot realize the above functions.

In order to solve the problems, the intelligent zebra crossing is produced at the right moment. The system mainly comprises a detection module and a main control module, wherein the detection module sends information of pedestrians on the zebra crossing to the main control module, and the main control module triggers light or sound to remind the pedestrians and vehicles so as to achieve the warning purpose. After the concept of the intelligent zebra crossing is put forward, high attention of governments at all levels is attracted. Since 2017, the construction of the intelligent zebra crossing is in the starting stage when the intelligent zebra crossing is established in succession in the cities of Beijing, Hangzhou, Nanning and the like. The current trial run of the intelligent zebra crossing can be roughly divided into three categories: one is that when a pedestrian enters a designated sensing area, light or sound systems on two sides of the zebra crossing are triggered to remind the vehicle to give the pedestrian a gift; the second type is that the system automatically adjusts traffic lights by sensing the number of people waiting for passing the road in the designated area to ensure that pedestrians pass through preferentially; and the third type is that the street lamps at two sides of the zebra crossing are turned on by pressing a designated button on the street lamps. However, the three zebra stripes still have shortcomings in actual operation. Firstly, only when the pedestrians are in the designated sensing area, the system can accurately detect the information of the pedestrians, and when the pedestrians are outside the sensing area or the number of the pedestrians is more than the accommodating amount of the sensing area, a driver can receive wrong prompt information; secondly, the driver receives pedestrian information unilaterally, and for the pedestrians, the safety distance between the pedestrians and the vehicle cannot be estimated due to the lack of early warning; thirdly, the cost of the existing 'intelligent zebra crossing' system for trial operation is too high, and the system is not suitable for large-area popularization.

Therefore, how to design a road safety early warning system without detection blind area, high safety coefficient and low system cost has become one of the problems to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide a wisdom road safety precaution system for there is the problem that detects blind area, factor of safety are low, with high costs etc. in solving prior art road safety precaution system.

In order to realize above-mentioned purpose and other relevant purposes, the utility model provides a wisdom road safety precaution system, wisdom road safety precaution system includes at least:

the pedestrian detection module is used for detecting pedestrians who want to cross the road;

the vehicle speed detection module is used for detecting a vehicle to pass through the zebra crossing and the vehicle speed;

the main controller is connected with the pedestrian detection module and the vehicle speed detection module and sends out an early warning control signal based on a signal detected by the pedestrian detection module or the vehicle speed detection module;

the early warning module is connected with the main controller and gives early warning based on the control of the main controller;

and the wireless communication module is connected with the main controller and sends the early warning information to the mobile equipment of pedestrians or drivers.

Optionally, the pedestrian detection module includes an infrared detection unit and a pressure detection unit, and the infrared detection unit is disposed on the edge of the sidewalk close to the zebra crossing; the pressure detection units are arranged at two ends of the zebra crossing.

Optionally, the infrared detection unit includes an infrared transmitter and an infrared receiver, and the infrared transmitter and the infrared receiver are in one-to-one correspondence and are respectively disposed on two sides of the zebra crossing.

More optionally, the detection height of the infrared detection unit is set to 80cm-100 cm.

More optionally, wisdom road safety precaution system still includes image acquisition device, image acquisition device with main control unit connects, carries out image acquisition and passback to pedestrian or vehicle main control unit.

Optionally, the master controller includes a master control unit and a light control switch; the light control switch detects outdoor light and outputs a light detection signal; the main control unit is connected with the output ends of the pedestrian detection module, the vehicle speed detection module and the light-operated switch, generates an early warning control signal based on a signal output by the pedestrian detection module or the vehicle speed detection module, and generates a switch control signal based on an output signal of the light-operated switch.

More optionally, the warning module includes a relay unit and a light-emitting warning device; the relay unit is connected with the output end of the main controller, the early warning control signal is output or cut off based on the switch control signal, and the light-emitting early warning device is connected with the output end of the relay unit and gives early warning based on the early warning control signal.

More optionally, the light-emitting early warning device includes: at least one of a warning board and an LED luminous zebra crossing.

Optionally, the wireless communication module includes a WIFI unit.

As above, the utility model discloses a wisdom road safety precaution system has following beneficial effect:

the utility model discloses a wisdom road safety precaution system utilizes infrared detecting element and pressure detecting element to detect the pedestrian for the first time, utilizes camera module reinspection pedestrian to open the video recording, utilize laser velocimeter to detect the vehicle that gets into in the zebra crossing safe distance, main control unit is through controlling LED light and warning sign suggestion vehicle on the zebra crossing, sends early warning information for pedestrian and driver simultaneously, realizes the information interaction, reaches dual warning. On the one hand, the pedestrian can be reminded to give the gift, on the other hand, the pedestrian can also obtain the dynamic information of the vehicle in time, and the potential safety hazard on the zebra crossing is reduced. The utility model discloses a wisdom road safety precaution system does not have the detection blind area, can all cover the crossing, and sensitive high and do not receive external environment to influence, can effectively reduce the potential safety hazard because unfavorable factors such as driving blind area and weather lead to. Furthermore, the utility model discloses a wisdom road safety precaution system is with low costs, not only can popularize and use in the city, also can promote traffic roads such as suburb, village and town and rural area, reduces traffic safety hidden danger.

Drawings

Fig. 1 shows that the utility model discloses a wisdom road safety precaution system's schematic structure diagram.

Fig. 2 shows the overlooking schematic diagram of the intelligent road safety pre-warning system of the present invention.

Fig. 3 shows that the utility model discloses a wisdom road safety precaution system looks sideways at the schematic diagram.

Fig. 4 is a schematic structural diagram of the infrared emitter according to the present invention.

Fig. 5 is a schematic structural diagram of the infrared receiver of the present invention.

Fig. 6 is a schematic structural diagram of the pressure detecting unit according to the present invention.

Fig. 7 shows a schematic structural diagram of the vehicle speed detection module of the present invention.

Fig. 8 is a schematic structural diagram of the photoswitch of the present invention.

Fig. 9 is a schematic structural diagram of a relay unit according to the present invention.

Fig. 10 is a schematic view of an LED light-emitting zebra crossing according to the present invention.

Description of the element reference numerals

1 wisdom road safety early warning system

11 pedestrian detection module

111 infrared detection unit

111a infrared emitter

111b infrared receiver

112 pressure detection unit

12 vehicle speed detection module

13 Main controller

131 light-operated switch

14 early warning module

141 relay unit

142a warning board

142b LED luminous zebra crossing

15 radio communication module

16 image acquisition device

2 Zebra crossing

3 sidewalk

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Please refer to fig. 1 to 10. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

As shown in fig. 1-10, the utility model provides a wisdom road safety precaution system 1, wisdom road safety precaution system 1 includes:

the system comprises a pedestrian detection module 11, a vehicle speed detection module 12, a main controller 13, an early warning module 14 and an early warning information transmission module 15.

As shown in fig. 1, the pedestrian detection module 11 detects a pedestrian crossing a road.

Specifically, as shown in fig. 2 and 3, the pedestrian detection modules 11 include two groups, which are respectively disposed at two ends of the zebra crossing 2 and are used for detecting states of pedestrians crossing the road. In the present embodiment, the pedestrian detection module 11 includes an infrared detection unit 111 and a pressure detection unit 112. As an example, the infrared detection units 111 are disposed at two ends of the zebra crossing 2 and located at the edge of the sidewalk 3 close to the road, and when a pedestrian enters the edge area of the sidewalk 3 close to the zebra crossing 2, the infrared detection units 111 send out corresponding detection signals. As an example, the pressure detecting units 112 are disposed at two ends of the zebra crossing 2 and located in an area where the zebra crossing 2 is close to the sidewalk 3, and when there is a pedestrian located in the detecting area of the pressure detecting unit 112, the pressure detecting unit 112 outputs a corresponding detecting signal. The infrared detection unit 111 and the pressure detection unit 112 are combined together, so that whether pedestrians cross the zebra crossing 2 or not can be preliminarily detected, and the walking direction of the pedestrians on the zebra crossing 2 and the number of people staying in the zebra crossing at any moment can be detected and calculated.

More specifically, as shown in fig. 2, the infrared detection unit 111 includes an infrared emitter 111a and an infrared receiver 111b, and the infrared emitter 111a and the infrared receiver 111b correspond to each other one by one. As shown in fig. 4, for example, the infrared emitter 111a includes a first transistor Q1, a first resistor R1, a second resistor R2, and a first light emitting diode L1, an emitter of the first transistor Q1 is connected to a power VCC, a base of the first transistor Q1 receives an emission control signal via the first resistor R1, and a collector of the first transistor Q1 is grounded via the first light emitting diode L1 and the second resistor R2. The infrared receiver 111b converts the infrared light signal into an electric signal; as shown in fig. 5, as an example, the infrared receiver 111b receives, amplifies, and demodulates the infrared light signal, and includes a photodiode L2, a third resistor R3, a fourth resistor R4 (a sliding rheostat or two series resistors are used instead), a fifth resistor R5, a comparator U1, and a first capacitor C1, wherein a cathode of the photodiode L2 is grounded, an anode of the photodiode L2 is connected to a power source VCC via the third resistor R3, an anode of the photodiode L2 outputs an electrical signal into which the infrared light signal is converted, and compares the electrical signal with a voltage-divided signal of the fourth resistor R4 input to the comparator U1, a power supply terminal of the comparator U1 is grounded via the first capacitor C1, and the comparator U1 outputs a detection signal and is connected to the power source VCC via the fifth resistor R5; the infrared receiver 111b may further employ a triode to detect the infrared light signal, which is not described herein. In this embodiment, the infrared transmitter 111a and the infrared receiver 111b are located at the edge of the sidewalk 3 close to the road and are respectively disposed at two sides of the zebra crossing 2, and a pedestrian can pass through between the infrared transmitter 111a and the infrared receiver 111b to enter the zebra crossing 2 area, under normal conditions, the infrared receiver 111b outputs a high level (or a low level), when a pedestrian enters the edge area of the sidewalk 3 close to the zebra crossing 2 from the sidewalk 3, the infrared light between the infrared transmitter 111a and the infrared receiver 111b is blocked, and if the infrared receiver 111b does not receive an infrared light signal, the output signal is inverted to a low level (or a high level). As an implementation manner of the present invention, the detection height (i.e. the height of the infrared light emitted in this embodiment) of the infrared detection unit 111 is set to 70cm-120cm, preferably 80cm-100cm, so as to reduce the false detection condition, and therefore, based on the level change outputted by the infrared receiver 111b can determine whether there is a pedestrian entering the sidewalk 3 at this time to be close to the edge area of the zebra crossing 2, and the infrared detection has a quick response, and the sensitivity is higher, and the characteristics of environmental protection and the like are suitable for the utility model discloses a smart road safety precaution system.

More specifically, the pressure detection unit 112 is located on the ground of the pavement near the sidewalk 3, and in this embodiment, is implemented by a pressure sensor that converts a pressure signal into an electrical signal (analog signal) based on a piezoelectric effect. As an example, the pressure detecting unit 112 is a semiconductor piezo-resistance type pressure sensor, and as shown in fig. 6, the pressure detecting unit 112 generates a piezo-resistance effect by deforming a sheet by an external force (pressure), so that a change in resistance is converted into an electric signal, which has advantages of small volume, light weight, high accuracy, and good temperature characteristics. Under the condition of normal power supply, if no pedestrian enters the detection area of the pressure detection unit 112, the pressure is zero, the resistance value is maximum, and the pressure sensor outputs a high level (or a low level); as the pressure increases, the resistance decreases, and the level of the sensor output slowly decreases (or slowly increases); if the return value of the pressure detection is not changed in the preset time period, the pedestrian enters the detection area by mistake, if the return value is changed, the pedestrian is ready to cross the road, and the quantity of the pedestrians staying on the zebra crossing 2 at any moment can be judged through level conversion output by the pressure sensor.

It should be noted that, in the present invention, the boundaries parallel to the zebra stripes are defined as the two ends of the zebra stripes, and the boundaries perpendicular to the zebra stripes are defined as the two sides of the zebra stripes.

As shown in fig. 1, the vehicle speed detection module 12 detects a vehicle that is about to pass through the zebra crossing 2 and a vehicle speed thereof.

Specifically, as shown in fig. 2, the vehicle speed detection module 12 is disposed at least one of the edges of the sidewalk 3 close to the road; in this embodiment, the vehicle speed detecting module 12 is implemented by a laser velocimeter. The laser velocimeter adopts the principle of laser velocimetry, obtains the moving distance of the vehicle to be measured in a time period by carrying out laser ranging on the vehicle to be measured twice with a specific time interval, thereby obtaining the moving speed of the vehicle to be measured.

More specifically, as shown in fig. 7, in the present embodiment, the laser velocimeter includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8 (a sliding rheostat or two series resistors instead), a ninth resistor R9, a first photocoupler U2, a second comparator U3 (an LM393 chip is used as an example), and a second light emitting diode L3, wherein one end of the light emitting diode in the first photocoupler U2 is connected to the power supply voltage VCC via the sixth resistor R6, the other end of the light emitting diode is grounded, one end of the phototriode in the first photocoupler U2 is connected to the first positive input terminal of the second comparator U3 and to the power supply voltage VCC via the seventh resistor R7, the other end of the phototriode is grounded, the first negative input terminal and the second positive input terminal of the second comparator U3 are connected to the voltage dividing signal of the eighth resistor R8, the second inverting input terminal of the second comparator U3 is connected to the second output terminal, and the first output terminal of the second comparator U3 outputs a detection signal and is connected to the power supply voltage VCC via the second light emitting diode L3 and the ninth resistor R9.

As shown in fig. 1, the main controller 13 is connected to the pedestrian detection module 11 and the vehicle speed detection module 12, and sends out an early warning control signal based on a signal detected by the pedestrian detection module 11 or the vehicle speed detection module 12.

Specifically, in the present embodiment, the main controller 13 includes a main control unit (not shown) and a light control switch 131. The light control switch 131 detects outdoor light and outputs a light detection signal. The main control unit is connected with the output ends of the pedestrian detection module 11, the vehicle speed detection module 12 and the light-operated switch 131, performs different instruction operations according to different feedback information returned by the pedestrian detection module 11 or the vehicle speed detection module 12, and generates a switch control signal according to an output signal of the light-operated switch 131.

More specifically, in the present embodiment, the main control unit adopts an STM32F103RCT6 chip, and STM32F103RCT6 is an Integrated Circuit (IC) of an embedded microcontroller, and has a core size of 32 bits, a speed of 72MHz, a program memory capacity of 256KB, a program memory type of FLASH, and a RAM capacity of 48K. Can all be applicable to according to feedback signal production corresponding control signal's module or unit wantonly the utility model discloses a main control unit, it is not repeated here to differ one.

More specifically, as an example, the optical control switch 131 takes a photoresistor as a core, the photoresistor is a special resistor made of semiconductor materials such as sulfide or selenide, and the working principle of the photoresistor is based on the internal photoelectric effect. The photoresistor is very sensitive to light, and is in a high-resistance state in the absence of illumination, and the dark resistance can generally reach 1.5 MOmega; the stronger the illumination is, the lower the resistance value is, and the resistance value is rapidly reduced along with the increase of the illumination intensity, and the bright resistance value can be reduced to below 1K omega. As another example, as shown in fig. 8, the photoswitch 131 detects light through a photo coupler, and includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13 (potentiometer), a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a second photo coupler U4, and a third comparator U5, wherein one end of a light emitting diode in the second photo coupler U4 is connected to a power supply voltage VCC through the tenth resistor R10, the other end of the light emitting diode is grounded, one end of a photo transistor in the second photo coupler U4 is connected to the power supply voltage VCC through the eleventh resistor R11, the other end of the photo transistor is grounded, one end of the twelfth resistor R12 is connected to a connection node between the photo transistor and the eleventh resistor R11, the other end of the twelfth resistor R12 is connected to a first input terminal of the third comparator U5, the thirteenth resistor R13 and the fourteenth resistor R14 are connected in series between the power supply voltage VCC and the ground, the connection node of the thirteenth resistor R13 and the fourteenth resistor R14 is connected to the second input terminal of the third comparator U5, the third comparator U5 outputs a switch control signal, one end of the sixteenth resistor R16 is connected to the power supply voltage VCC, the other end of the sixteenth resistor R16 is connected to the output terminal of the third comparator U5, one end of the fifteenth resistor R15 is connected to the output terminal of the third comparator U5, and the other end of the fifteenth resistor R15 is connected to the second input terminal of the third comparator U5. The photoswitch 131 sets a threshold value for starting the relay unit by adjusting a thirteenth resistor R13 (potentiometer), and controls the subsequent relay unit to pull in based on the main control unit when the threshold value is dark, and controls the subsequent relay unit to be disconnected based on the main control unit when the threshold value is bright.

As shown in fig. 1, as another implementation manner of the present invention, the smart road safety pre-warning system further includes an image acquisition device 16, the image acquisition device is connected to the main controller 13, and performs image acquisition on pedestrians or vehicles and transmits back to the main controller 13, so as to realize the retest of pedestrians and the acquisition of intersection images.

Specifically, in the present embodiment, the image capturing device 16 is a camera, and the image capturing device 16 includes a CMOS digital image sensor and a signal conversion circuit (not shown) as an example. CMOS (complementary metal oxide semiconductor) is a semiconductor device capable of recording images, mainly uses two elements of silicon and germanium to make a semiconductor, so that the semiconductor with N (negative charge) and P (positive charge) electrodes coexists on the CMOS, and the current generated by the two complementary effects can be recorded and interpreted into images by a processing chip. The signal conversion circuit is connected with the output end of the CMOS digital image sensor and processes the output signal of the CMOS digital image sensor. The image acquisition device 16 is in a dormant state under normal conditions, when the pedestrian detection module 11 detects an object, the main controller 13 wakes up the image acquisition device 16, the image acquisition device 16 continuously photographs the road surface within a period of time, then data are transmitted back to the main controller 13, the main controller 13 integrates the data, analyzes and judges possible movement tracks of pedestrians, and rechecks the pedestrians to determine that the pedestrians really pass the road; when the vehicle speed detection module 12 detects that there is a vehicle in the safe distance of the zebra crossing, the main controller 13 will call the image acquisition device 16, immediately start the video recording function, and store the data acquired by the image acquisition device 16 until the pedestrian safely passes the zebra crossing.

As shown in fig. 1, the early warning module 14 is connected to the main controller 13, and makes an early warning based on the control of the main controller 13.

Specifically, in the present embodiment, the warning module 14 includes a relay unit 141 and a light-emitting warning device. The relay unit 141 is connected to the output end of the main controller 13, and outputs or cuts off the early warning control signal based on the switch control signal; the light-emitting early warning device is connected with the output end of the relay unit 141, and gives early warning based on the early warning control signal.

More specifically, as shown in fig. 9, as an example, the relay unit 141 includes a seventeenth resistor R17, an eighteenth resistor R18, a second transistor Q2, a first diode D1, a first capacitor C1 and a relay U6, an emitter of the second transistor Q2 is grounded, a base is connected to the switching control signal via the seventeenth resistor R17, and a collector is connected to an anode of the first diode D1; one end of the eighteenth resistor R18 is connected with the base of the second triode Q2, and the other end of the eighteenth resistor R18 is grounded; the cathode of the first diode D1 is grounded via the first capacitor C1; the first diode D1 is connected in parallel at two ends of the relay U6, the input end of the relay U6 is connected with the early warning control signal, the first output end is connected with the light-emitting early warning device, and the second output end is suspended. In this embodiment, the relay unit 141 adopts a JQC-3FF-S-Z type relay, and is powered by 5V voltage, one pin in the middle is a COM end of a contact, one of the contacts of the two output ends is normally open, and the other is normally closed; there are two maximum contact voltage ratings, one 250VAC/30VDC and the other 125VAC/28VDC, with a maximum rated current of 10A. As long as 5V voltage is applied to the two ends of the coil, certain current flows in the coil, so that an electromagnetic effect is generated, the armature iron overcomes the pulling force of the return spring and is attracted to the iron core under the attraction effect of the electromagnetic force, and the COM end of the armature iron is driven to be attracted to the normally open contact. When the coil is powered off, the electromagnetic attraction force disappears, and the armature returns to the original position under the counterforce of the spring, so that the COM end is combined with the original normally closed contact. The circuit is connected with the light-emitting early warning device, and the light-emitting early warning device is connected with the light-emitting early warning device through the power supply line.

More specifically, the light-emitting early warning device includes at least one of a warning board 142a and an LED light-emitting zebra crossing 142 b. As an example, the light-emitting early warning device includes a warning board 142a and an LED light-emitting zebra crossing 142 b. Warning sign 142a set up in on the pavement 3, pass through as the pedestrian during zebra stripes 2, warning sign 142a is used for providing the warning for the vehicle, and the demonstration characters include but not limited to "please slow down and walk slowly, and the place ahead has the pedestrian to pass through zebra stripes" or show the light that has the warning effect, can give the better warning effect of vehicle, makes things convenient for the better information of knowing pedestrian on the zebra stripes in place ahead of driver to slow down and walk slowly, reduce the emergence of traffic accident. The LED light-emitting zebra stripes 142b are buried under the ground where the zebra stripes 2 are located, for example, as shown in fig. 10, the LED light-emitting zebra stripes 142b include a plurality of rectangular light-emitting bodies, the rectangular light-emitting bodies are arranged in parallel at intervals to form white stripes of the zebra stripes 2 (each rectangular light-emitting body may be disposed at any position in the zebra stripes 2 area, but is not limited to this embodiment), and the LED light-emitting zebra stripes 142b display a light effect on the road surface to warn pedestrians and drivers and play a role in illuminating pedestrians.

As shown in fig. 1, the wireless communication module 15 is connected to the main controller 13, and transmits the warning information to the mobile device of the pedestrian or the driver.

Specifically, the wireless communication module 15 is used for transmitting a wireless signal, and wireless communication is a communication method for exchanging information by using the characteristic that a radio wave signal can propagate in a free space, and wireless communication realized in a mobile is also called mobile communication, and the wireless communication and the mobile communication are called wireless mobile communication together; in brief, wireless communication is a communication method using only electromagnetic waves without using cables. In this embodiment, the wireless communication module 15 includes a WIFI unit, and the WIFI technology is also called a wireless fidelity technology, and is a short-range wireless transmission technology based on IEEE802.11 protocol, and can support internet access radio signals in a range of hundreds of feet, the working frequency band of the wireless communication module is 2.4GHz, the transmission rate can reach 54Mbps at most, and meanwhile, the coverage range of WIFI is wide and can reach 100 meters; the method and the device have the advantages of high data transmission speed, high reliability, no need of wiring, wide coverage range, automatic connection and the like. As an example, the WIFI unit employs an ESP8266 chip, the ESP8266 is an ultra-low power consumption UART-WIFI transparent transmission module (when interacting with an upper computer, using a serial port in the UART format for transparent transmission, information interaction can be directly performed), has an extremely competitive packaging size and ultra-low energy consumption technology in the industry, is specially designed for mobile devices and internet of things applications, and can connect physical devices of users to a WIFI network to perform internet or local area network communication, thereby realizing networking functions. The ESP8266 can realize serial port transparent transmission, PWM regulation and GPIO control, has good data transmission reliability and the maximum transmission rate of 460800 bps.

As the utility model discloses a another kind of implementation, wisdom road safety precaution system still includes the mobile device, wireless communication module 15 sends early warning information to pedestrian or driver's cell-phone, and cell-phone APP acquires the early warning information after-trigger corresponding procedure that the WIFI unit sent, drives the cell-phone vibration and auto-eject warning frame and voice broadcast warning.

It should be noted that any circuit structure or device capable of realizing the functions of each module of the intelligent road safety early warning system of the utility model is suitable for the utility model, not limited to the embodiment,

the utility model discloses a wisdom road safety precaution system's theory of operation as follows:

in detecting a pedestrian, when the infrared detection unit 111 placed at the edge of the road detects a pedestrian, the main controller 13 immediately turns on the pressure detection unit 112. If the value returned by the pressure detection unit 112 is not changed within a period of time, it indicates that the pedestrian only enters the detection area by mistake; if the value returned by the pressure detection unit 112 changes, it indicates that the pedestrian is ready to cross the road. By the method, pedestrians on sidewalks at two ends of the road can be preliminarily detected, then the image acquisition device 16 is started, and whether the pedestrians really prepare the road is rechecked according to a track algorithm by calling the camera. If the vehicle speed detection module 12 detects that a vehicle running at a high speed drives to a zebra crossing within a safe distance of the zebra crossing, the main controller 13 immediately starts a video recording function to ensure that the driver retains original information after hit-and-run when a pedestrian passes through the zebra crossing and a traffic accident occurs.

Under normal conditions, the main controller 13 serves as a host to generate hot spot signals, drivers and pedestrian mobile phones serve as clients, and when pedestrians enter a WIFI coverage range, the clients can be automatically connected to the host, so that messages sent by the main controller 13 can be received. When the vehicle goes into zebra crossing safe distance, and there is the pedestrian to prepare the road this moment, then give pedestrian's cell-phone with this message transmission, the low head that will cross the road is warned through vibration of the bullet window that APP set for and pronunciation etc. and is noticed the vehicle, lights the luminous zebra crossing 142b of LED on road surface simultaneously, like this, can let the driver know whether the pedestrian wants to cross the road through the LED lamp on the one hand, and on the other hand also will road conditions information this moment send near pedestrian through wireless WIFI, remind the pedestrian to notice safety. When a pedestrian prepares to cross the road and the vehicle is out of the safe distance from the pedestrian at the moment, the warning board 142a and the LED luminous zebra stripes 142b are lightened, on one hand, the LED luminous zebra stripes 142b can provide illumination for the pedestrian at night; on the other hand, the warning board 142a and the LED light-emitting zebra crossing 142b may also play a role of providing a warning to a vehicle away from the safe distance and away from the pedestrian, so as to warn the driver that the pedestrian should slow down and walk on the road.

To sum up, the utility model provides a wisdom road safety precaution system, include: the pedestrian detection module is used for detecting pedestrians who want to cross the road; the vehicle speed detection module is used for detecting a vehicle to pass through the zebra crossing and the vehicle speed; the main controller is connected with the pedestrian detection module and the vehicle speed detection module and sends out an early warning control signal based on a signal detected by the pedestrian detection module or the vehicle speed detection module; the early warning module is connected with the main controller and gives early warning based on the control of the main controller; and the wireless communication module is connected with the main controller and sends the early warning information to the mobile equipment of pedestrians or drivers. The utility model discloses a wisdom road safety precaution system can carry out dual warning, and factor of safety is high; the device has no detection blind area, can completely cover the intersection, has high sensitivity and is not influenced by the external environment, and can effectively reduce potential safety hazards caused by adverse factors such as driving blind areas, weather and the like; the cost is low, the road traffic system can be popularized and used in cities, can also be popularized to traffic roads in suburbs, villages and towns, rural areas and the like, and reduces potential traffic safety hazards. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides an wisdom road safety precaution system which characterized in that wisdom road safety precaution system includes at least:

2. The intelligent road safety pre-warning system of claim 1, wherein: the pedestrian detection module comprises an infrared detection unit and a pressure detection unit, and the infrared detection unit is arranged at the edge of the sidewalk close to the zebra crossing; the pressure detection units are arranged at two ends of the zebra crossing.

3. The intelligent road safety pre-warning system of claim 2, wherein: the infrared detection unit comprises an infrared transmitter and an infrared receiver, wherein the infrared transmitter and the infrared receiver correspond to each other one by one and are respectively arranged on two sides of the zebra crossing.

4. The intelligent road safety pre-warning system of claim 3, wherein: the detection height of the infrared detection unit is set to be 80-100 cm.

5. The intelligent road safety pre-warning system of claim 1, wherein: the vehicle speed detection module comprises a laser velocimeter.

6. The intelligent road safety pre-warning system according to any one of claims 1 to 5, wherein: wisdom road safety precaution system still includes image acquisition device, image acquisition device with main control unit connects, carries out image acquisition and passback to pedestrian or vehicle extremely main control unit.

7. The intelligent road safety pre-warning system of claim 1, wherein: the main controller comprises a main control unit and a light-operated switch; the light control switch detects outdoor light and outputs a light detection signal; the main control unit is connected with the output ends of the pedestrian detection module, the vehicle speed detection module and the light-operated switch, generates an early warning control signal based on a signal output by the pedestrian detection module or the vehicle speed detection module, and generates a switch control signal based on an output signal of the light-operated switch.

8. The intelligent road safety pre-warning system of claim 7, wherein: the early warning module comprises a relay unit and a light-emitting early warning device; the relay unit is connected with the output end of the main controller, the early warning control signal is output or cut off based on the switch control signal, and the light-emitting early warning device is connected with the output end of the relay unit and gives early warning based on the early warning control signal.

9. The intelligent road safety pre-warning system of claim 8, wherein: the light emission early warning device includes: at least one of a warning board and an LED luminous zebra crossing.

10. The intelligent road safety pre-warning system of claim 1, wherein: the wireless communication module comprises a WIFI unit.