Intelligent driving guidance system in severe weather

Abstract

The utility model discloses an intelligent driving guidance system in severe weather, which belongs to the technical field of road driving, and comprises a cloud server, a camera, a control mark and a guidance mark, the output end of the cloud server is respectively connected with the control mark and the guidance mark, the input end of the cloud server is connected with the camera, and the camera shoots videos towards the control mark; each of the control mark and the induction mark comprises a shell, a control unit and a power supply unit connected with the control unit are arranged in each shell, each power supply unit comprises a solar power supply module and a mains supply module, and a storage battery of the solar power supply module is connected with the mains supply module through a switching circuit; a second light-emitting unit and a third light-emitting unit are fixedly embedded in one side of the induction mark shell and connected with a control unit in the induction mark shell. Under the condition of low visibility, the induction sign can give warning of different colors of light according to the visibility grade and crosswind detection information.

Description

Technical Field

[0001] The utility model belongs to the technical field of road driving, and in particular relates to an intelligent driving guidance system under severe weather conditions. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] With the rapid development of road traffic, driving safety has become a focus of public concern. Especially in adverse weather conditions such as rain, snow, fog, haze, and dust, visibility is reduced and the driver's vision is obstructed, posing a great threat to driving safety.

[0004] To improve driving safety in inclement weather, warning signs and guidance signs are often installed on roads to remind drivers to pay attention to driving safety. However, existing guidance signs only have a single light panel with a single warning method and color. In low-visibility conditions, they cannot provide warnings with different light colors based on visibility levels, making it difficult for drivers to distinguish warning messages. Furthermore, existing guidance signs are mostly powered by mains electricity, which consumes a lot of energy when deployed over a large area. Using solar power, however, makes it impossible to provide continuous guidance in continuous inclement weather. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the utility model provides an intelligent driving guidance system for bad weather. In low visibility conditions, the guidance sign can provide warnings with different colors of light according to the visibility level and crosswind detection information.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An intelligent driving guidance system for inclement weather, comprising a cloud server, a camera, a control beacon, and a guidance beacon, wherein the output end of the cloud server is connected to the control beacon and the guidance beacon respectively, and the input end of the cloud server is connected to the camera, and the camera shoots a video facing the control beacon;

[0008] The control sign and the induction sign both include a shell, and the shell includes a control unit and a power supply unit connected thereto, the power supply unit includes a solar power supply module and a mains power supply module, and the battery of the solar power supply module is connected to the mains power supply module through a switching circuit; a second light-emitting unit and a third light-emitting unit are fixedly embedded on one side of the shell of the induction sign, and the second light-emitting unit and the third light-emitting unit are connected to the control unit inside the shell of the induction sign.

[0009] According to a further technical solution, the second light emitting unit and the third light emitting unit emit different colors of light.

[0010] According to a further technical solution, the output end of the cloud server wirelessly communicates with the control unit of the control target and the induction target respectively through a local controller.

[0011] According to a further technical solution, the local controller is arranged inside the control mark.

[0012] According to a further technical solution, a first light emitting unit is fixedly embedded in one side of the shell of the control mark, and the first light emitting unit is connected to a control unit inside the shell of the control mark.

[0013] A further technical solution is that the switching circuit includes the output end of the battery connected to the normally closed contact of the relay, the normally open contact of the relay is suspended, one end of the relay coil is connected to the AC power supply module, the other end is grounded, and the control unit is connected to the relay control.

[0014] A further technical solution is that the normally closed contacts of the relay are respectively connected to the gate of the first transistor, the second end of the first resistor, and the drain of the third transistor, the source of the first transistor is grounded, the drain of the first transistor is respectively connected to the gate of the third transistor and the second end of the second resistor, the first end of the first resistor is grounded, and the second end of the first resistor is also connected to the gate of the second transistor, the source of the third transistor, the source of the second transistor, and the first end of the second resistor are all connected to the power supply output end, and the drain of the second transistor is connected to the output end of the AC power supply module.

[0015] According to a further technical solution, the housings of the control mark and the induction mark are further provided with a wireless communication unit, which is connected to the control unit.

[0016] According to a further technical solution, the wireless communication unit adopts a LORA module.

[0017] A further technical solution also includes a crosswind detector, and the output end of the crosswind detector is connected to the cloud server.

[0018] Beneficial effects of the utility model:

[0019] The induction beacon of the present invention is provided with a second light-emitting unit and a third light-emitting unit. The cloud server sends an induction beacon control instruction to the induction beacon according to the visibility level and crosswind detection information. The induction beacon enables the corresponding light-emitting unit to emit light according to the instruction. In low visibility conditions, it can realize warnings of different colors of light according to the visibility level.

[0020] The control sign and the induction sign of the present invention are both equipped with a solar power supply as the main power supply and an AC power supply as the backup power supply. They are powered by solar energy on a daily basis. When continuous bad weather occurs and the solar power supply has insufficient energy storage, they are automatically switched to AC power supply, which can ensure the stable operation of the control sign and the induction sign. In bad weather, the induction of driving must be guaranteed to ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0022] Figure 1 This is the system architecture diagram of the intelligent driving guidance system of this utility model

[0023] Figure 2 This is a schematic diagram of the induction target of the utility model;

[0024] Figure 3 Schematic diagram of the communication link between the local controller (controller) and the induction marker in the present invention;

[0025] Figure 4 This is a circuit diagram of the switching circuit of the present invention.

[0026] Among them, 1-shell, 2-second light-emitting unit, 3-third light-emitting unit, 4-mounting base, 5-guardrail. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, an embodiment of the utility model provides an intelligent driving guidance system for severe weather conditions, including a cloud server, a camera, a control mark and a guidance mark. The output end of the cloud server is respectively connected to the control mark and the guidance mark, and the input end of the cloud server is connected to the camera, which shoots video toward the control mark.

[0029] In this embodiment, the cloud server can be located in a monitoring center away from the road. The cloud server is connected to the control and guidance beacons via a local controller. Specifically, the cloud server's output is connected to the local controller, which is in turn connected to the control units of the control and guidance beacons. In other words, the cloud server's output wirelessly communicates with the control and guidance beacon's control units via the local controller. The cloud server and local controller communicate via 4G / 5G, transmitting control commands over the 4G / 5G network.

[0030] In this embodiment, in order to reduce costs, the camera uses a surveillance camera installed on the highway, so that the control mark faces the surveillance camera lens, and the surveillance camera shoots the video of the control mark and sends it to the cloud server.

[0031] In this embodiment, the control mark includes a power supply unit, a wireless communication unit, a control unit and a light-emitting unit. The power supply unit is connected to the wireless communication unit, the control unit and the light-emitting unit respectively to supply power to the above units and ensure the stable operation of the control mark. Similarly, the induction mark includes a power supply unit, a wireless communication unit, a control unit and a light-emitting unit. The power supply unit is connected to the wireless communication unit, the control unit and the light-emitting unit respectively to supply power to the above units and ensure the stable operation of the induction mark.

[0032] The power supply unit includes a solar power supply module and a mains power supply module. In order to reduce the overall power consumption of the electromechanical system of the highway, the control sign and the induction sign are equipped with a solar power supply as the main power supply and a mains power supply as the backup power supply. They are powered by solar energy on a daily basis. When continuous bad weather occurs and the solar power supply has insufficient energy storage, they will automatically switch to mains power supply. In bad weather, driving guidance must be guaranteed to ensure driving safety.

[0033] Specifically, the solar power module includes a power generation device and a power storage device. The control and induction markers are approximately rectangular in shape, with the solar power unit's power storage device, control unit, and wireless communication unit fixedly mounted inside the housings. The solar power unit's power generation device is embedded in the top and side surfaces of the housing, which are fully exposed to sunlight. A mounting base is fixed to the bottom of the housing. The specific mounting position can be flexibly selected based on actual conditions and is not specifically limited in this embodiment.

[0034] Furthermore, a first light-emitting unit is fixedly embedded in the side wall of the control target's housing facing the camera. A bracket is mounted on the road guardrail pole, which secures the control target to the top of the guardrail pole on the left side of the driving direction. The local controller is also fixed inside the control target's housing for easy maintenance and management.

[0035] Further, such as Figure 2 As shown, the side of the induction sign shell facing the direction of the oncoming vehicle is fixedly embedded with a second light-emitting unit and a third light-emitting unit. For example, the second light-emitting unit, i.e., the red light-emitting unit, is fixedly embedded on the upper side, and the third light-emitting unit, i.e., the yellow light-emitting unit, is fixedly embedded on the lower side of the shell facing the oncoming vehicle. The induction sign is fixed to the guardrails on both sides of the road by a bracket. The structure of the induction sign is similar to that of the control sign. No schematic diagram of the control sign is provided. The difference is that the induction sign has two light-emitting units, i.e., the second light-emitting unit and the third light-emitting unit. The second light-emitting unit and the third light-emitting unit have different light-emitting colors, and can emit two-color light, while the control sign has one light-emitting unit, i.e., the first light-emitting unit.

[0036] In some embodiments, the power generation device uses solar photovoltaic panels to convert solar energy into electrical energy, such as high-efficiency monocrystalline silicon or polycrystalline silicon solar panels, and the power storage device uses batteries to store the electrical energy converted by the solar panels so as to power the system at night or on cloudy days, such as lithium batteries, lead-acid batteries, etc.

[0037] In some embodiments, the control and guidance markers are housed in enclosures rated IP65 to prevent dust ingress and ensure normal operation in adverse weather conditions, such as heavy rain and sandstorms. The enclosures are constructed of engineering plastic or metal (e.g., aluminum alloy or stainless steel), with waterproof seals installed at the joints.

[0038] The wireless communication unit uses a LoRa module and has LoRa communication capabilities. It is connected to the control unit, which wirelessly connects to the local controller via the wireless communication unit and receives LoRa control commands from the local controller. The light-emitting unit is connected to the control unit and controls its on / off and brightness according to the control commands (sent by the local controller). The control unit is also connected to the power supply unit to control the switching between the main and backup power sources. In the event of continuous severe weather and insufficient solar power storage, it automatically switches to mains power supply to ensure stable operation of the control and induction targets.

[0039] Furthermore, the control unit utilizes a microcontroller (MCU), and the solar power module utilizes a battery as a power storage device. The MCU is connected to the battery to monitor the battery charge in real time. When the battery charge is low, the system switches to mains power. Specifically, the MCU measures the battery voltage using an analog-to-digital converter (ADC). When the battery voltage falls below a set threshold, the system determines that the battery charge is low.

[0040] The battery of the solar power supply module is connected to the mains power supply module through a switching circuit. The switching circuit between the solar power supply and the mains power supply is as follows: Figure 4 As shown, the output terminal Vin1 of the battery is connected to the normally closed contact of the relay, the normally open contact of the relay is suspended, one end of the relay coil is connected to the mains power supply module Vin2 (i.e., the mains power supply), and the other end is grounded, and the MCU is controlled and connected to the relay, and the MCU realizes the on and off of the battery output circuit by controlling the relay; the normally closed contact of the relay is respectively connected to the gate of the first transistor Q1, the second end of the first resistor R1, and the drain of the third transistor Q3, the source of the first transistor Q1 is grounded, the drain of the first transistor Q1 is respectively connected to the gate of the third transistor Q3 and the second end of the second resistor R2, the first end of the first resistor R1 is grounded, and the second end of the first resistor R1 is also connected to the gate of the second transistor Q2, the source of the third transistor Q3, the source of the second transistor Q2, and the first end of the second resistor R2 are all connected to the power supply output terminal; the drain of the second transistor Q2 is connected to the output terminal of the mains power supply module (i.e., the mains power supply).

[0041] In some embodiments, the resistance of the first resistor R1 and the second resistor R2 is 300 kΩ; the first transistor Q1 can be a 2N7002K transistor, and the second transistor Q2 and the third transistor Q3 can be PMN50XP-VB transistors. The resistance and model of these components can be flexibly selected based on actual conditions and are not specifically limited in this embodiment.

[0042] When the relay's normally closed contacts close, the battery outputs voltage. At this point, Q1 turns on, pulling down Q3's gate. Q3 then turns on, and the voltage between Q2's gate and source equals Q3's conduction voltage drop. Therefore, Q2 turns off, disconnecting the AC power supply, and the battery powers the output terminal. When the relay's normally closed contacts open, Q1 turns off. R1 pulls Q2's gate down, turning Q2 on. R2 pulls Q3's gate up, turning Q3 off. In the entire switching circuit, Q1 and Q3 are off, and the AC power supply output terminal is powered by the AC power supply. In other words, the switching between battery and AC power is achieved by closing and opening the relay's normally closed contacts.

[0043] The MCU monitors the battery voltage in real time through the analog-to-digital converter ADC. When it determines that the battery voltage is lower than the set threshold, the MCU outputs a high level to the relay, the relay is energized, the normally closed contacts of the relay are disconnected, and the power is supplied by the mains power supply. After being charged by solar energy, when the MCU determines that the battery voltage is higher than the set threshold, the MCU outputs a low level to the relay, the relay is de-energized, the normally closed contacts of the relay are closed, and the power is supplied by the battery, which greatly reduces the energy consumption of the control and induction targets, uses renewable energy for power supply, and reduces the impact on the environment.

[0044] In some embodiments, the wireless communication unit utilizes a LoRa module for data transmission; the control unit utilizes a microcontroller (MCU), such as an ARM Cortex-M series microcontroller, which offers high performance and low power consumption; and the light-emitting unit utilizes an LED light board. Each of these units is implemented using existing components. In practical applications, the components used to implement these functions can be flexibly selected and are not specifically limited in this embodiment.

[0045] In this embodiment, a surveillance camera and a cloud server communicate via optical fiber. The camera captures highway video and transmits it to the cloud server, which extracts the highway image for visibility detection. The visibility threshold is 500 meters. If the current visibility is determined to be ≤500 meters, the cloud server issues a control instruction to the control beacon through a local controller. The control unit in the control beacon receives the instruction and controls the light-emitting unit to illuminate continuously. After the control beacon actively illuminates, the camera captures video of the control beacon and transmits it to the cloud server. The cloud server extracts the image information of the smart beacon for low visibility level detection, enabling further classification of low visibility levels and improving the accuracy of low visibility classification.

[0046] The control marks are deployed in groups, and the light-emitting units are always on with a fixed brightness. The control marks are respectively set at positions of about 50 meters, 100 meters, and 200 meters away from the camera position. The driving guidance of this embodiment is in bad weather conditions, and visibility is low (such as visibility is less than 500 meters), that is, the visibility level is divided under low visibility, so the control mark distance is set less than 500 meters. According to the distance between the control mark and the camera, the visibility can be divided into VI≤50m, 50m <VI≤100m、100m<VI≤200m、200m<VI≤500m、VI> 500m Level 5. For example, if the cloud server extracts an image containing three sets of control marks and cannot identify the control mark at 50 meters, it determines that the current visibility is less than or equal to 50 meters.

[0047] It should be noted that the cloud server uses a digital image-based visibility recognition algorithm model for visibility recognition, such as an FFT-based visibility detection algorithm. This visibility recognition algorithm model utilizes existing network models and training methods and does not involve software program improvements. Any algorithm capable of detecting visibility levels can be used, and the algorithm can be flexibly selected based on actual circumstances. This embodiment does not impose any specific limitations.

[0048] In this embodiment, the intelligent driving induction system also includes a crosswind detector, the output end of which is connected to the cloud server to detect wind speed information and push the wind speed detection information directly to the cloud server via 4G / 5G communication.

[0049] In some embodiments, the crosswind detector can be deployed at places where crosswinds are likely to occur, such as tunnel entrances and bridges, and the induction beacon can be deployed on the upstream section of the crosswind detector.

[0050] In this embodiment, the cloud server sends the induction beacon control instructions to the local controller based on the detected visibility level and crosswind detection information. The local controller sends the induction beacon control instructions to the induction beacon control unit. The induction beacon control unit controls the upper and lower light-emitting units to perform different light-emitting modes according to the instructions.

[0051] That is to say, the induced target light-emitting units are red light-emitting units and yellow light-emitting units, and the induced target can execute different light-emitting modes according to the visibility level and crosswind detection information. For example, when VI ≤ 50m, the red light-emitting unit is always on to provide a warning of no passage in low visibility; when 50m < VI ≤ 100m and 100m < VI ≤ 200m, the yellow light-emitting unit flashes for vehicle driving guidance; when 200m < VI ≤ 500m, the yellow light-emitting unit is always on to strengthen the display of the road contour; when the crosswind detection information reaches the preset wind level, the red light-emitting unit of the induced target is controlled to flash to warn of the crosswind.

[0052] As Figure 3 As shown, multiple induced targets are arranged along both sides of the road. The multiple induced targets are all connected to the local controller in the corresponding area control target, and the multiple induced targets are connected through a wireless link to form a short-range wireless communication network. In the actual application process, multiple local controllers are adaptively set according to the highway distance to construct multiple groups of short-range wireless communication networks, all of which are connected to the cloud server, and corresponding control instructions can be sent according to the road conditions to improve the speed of control instruction distribution.

[0053] Detailed description of the working principle:

[0054] The camera captures the video of the highway and sends it to the cloud server. The cloud server extracts the highway image information for visibility detection. When it is judged that the current visibility ≤ 500m, the cloud server sends a control instruction of the control target to the control target through the local controller. The control unit in the control target receives the control instruction and controls the light-emitting unit to be always on. After the control target actively emits light, the camera captures the video of the control target and sends it to the cloud server. The cloud server extracts the intelligent vision target image information for low visibility level detection to further subdivide the low visibility level and improve the accuracy of low visibility division. At the same time, the cloud server also receives the wind speed detection information transmitted by the crosswind detector, and sends an induced target control instruction to the local controller according to the wind speed detection information and visibility level. The local controller then sends it to the induced target, and the induced target controls the light-emitting modes of the yellow light-emitting unit and the red light-emitting unit according to the induced target control instruction.

[0055] Both the control target and the induced target in the vehicle driving guidance system can be powered by solar energy or mains electricity. Usually, it is powered by solar energy to reduce the energy consumption of the induction system. When continuous bad weather occurs and the energy storage of the solar power supply is insufficient, the control unit in the control target and the induced target realizes the switching between solar power supply and mains electricity supply through the closing and opening of the relay, and can switch to mains electricity supply to ensure the stable operation of the control target and the induced target, and ensure the vehicle driving guidance in bad weather and guarantee driving safety.

[0056] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. An intelligent driving guidance system for inclement weather, characterized by: It includes a cloud server, a camera, a control mark and an induction mark, wherein the output end of the cloud server is connected to the control mark and the induction mark respectively, the input end of the cloud server is connected to the camera, and the camera shoots video toward the control mark; The control sign and the induction sign both include a shell, and the shell includes a control unit and a power supply unit connected thereto, the power supply unit includes a solar power supply module and a mains power supply module, and the battery of the solar power supply module is connected to the mains power supply module through a switching circuit; a second light-emitting unit and a third light-emitting unit are fixedly embedded on one side of the shell of the induction sign, and the second light-emitting unit and the third light-emitting unit are connected to the control unit inside the shell of the induction sign.

2. The intelligent driving guidance system for inclement weather according to claim 1, characterized in that: The second light emitting unit and the third light emitting unit emit different colors.

3. The intelligent driving guidance system in bad weather as claimed in claim 1, characterized in that: The output end of the cloud server wirelessly communicates with the control unit of the control target and the induction target through the local controller.

4. The intelligent driving guidance system for inclement weather according to claim 3, characterized in that: The local controller is arranged inside the control mark.

5. The intelligent driving guidance system in bad weather as claimed in claim 1, characterized in that: A first light emitting unit is fixedly embedded in one side of the shell of the control mark, and the first light emitting unit is connected to a control unit inside the shell of the control mark.

6. The intelligent driving guidance system in bad weather as claimed in claim 1, characterized in that: The switching circuit includes an output end of the battery connected to the normally closed contact of the relay, the normally open contact of the relay is suspended, one end of the relay coil is connected to the mains power supply module, the other end is grounded, and the control unit is connected to the relay control.

7. The intelligent driving guidance system in bad weather as claimed in claim 6, characterized in that: The normally closed contacts of the relay are respectively connected to the gate of the first transistor, the second end of the first resistor, and the drain of the third transistor; the source of the first transistor is grounded; the drain of the first transistor is respectively connected to the gate of the third transistor and the second end of the second resistor; the first end of the first resistor is grounded; the second end of the first resistor is also connected to the gate of the second transistor; the source of the third transistor, the source of the second transistor, and the first end of the second resistor are all connected to the power supply output end; and the drain of the second transistor is connected to the output end of the AC power supply module.

8. The intelligent driving guidance system in bad weather as claimed in claim 1, characterized in that: The housings of the control mark and the induction mark are further provided with a wireless communication unit, and the wireless communication unit is connected to the control unit.

9. The intelligent driving guidance system in bad weather as claimed in claim 8, characterized in that: The wireless communication unit adopts the LORA module.

10. The intelligent driving guidance system in bad weather as claimed in claim 1, characterized in that: It also includes a crosswind detector, and the output end of the crosswind detector is connected to the cloud server.

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