Underground parking lot safety warning device and control system

Abstract

The invention belongs to the field of machining and manufacturing, and relates to an underground parking lot safety warning device and a control system, and the device comprises an L-shaped line one-way detector and a display screen; the control system comprises a signal acquisition and processing module, a display driving control module and a power management module; according to the technical scheme, a driver can be warned in advance when the vehicle passes through various crossroads in the underground parking lot, so that the driver has sufficient time to perform corresponding operations such as speed reduction, flashing, whistling or parking in advance, and safety accidents such as vehicle scratching, rear-end collision or collision caused by sight blocking are avoided in time; and basement driving potential safety hazards caused by blind areas can be greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of mechanical processing and manufacturing, and in particular relates to a safety warning device and control system for underground parking lots. Background Technology

[0002] As a common public facility, underground parking lots make efficient use of space, but also pose blind spot risks due to the frequent entry and exit of vehicles.

[0003] The intersections in underground parking garages are divided into three types: cross, T, and L-shaped. When vehicles pass through these intersections, the forward and backward visibility is relatively good, but the left and right visibility is obstructed to varying degrees by parked vehicles and the load-bearing structure of the garage, creating blind spots. This makes it difficult for drivers to judge whether there are vehicles traveling to the left and right, and how far away they are from the intersection. Drivers often only notice oncoming vehicles when they are about to cross the intersection. If they do not take timely emergency deceleration or braking, accidents such as scrapes and collisions are very likely to occur.

[0004] In some existing underground parking garages, convex mirrors are installed at intersections to help drivers observe road conditions. However, these mirrors only provide a reflected image from one direction, and their visibility is limited by factors such as garage lighting intensity, mirror size, mirror distortion rate, and the distance between the vehicle and the mirror. The image is often difficult for drivers in the garage to see clearly. Although all vehicles slow down, flash their lights, and honk their horns before passing these intersections, reducing accidents, drivers' safety awareness and driving habits vary, and it's impossible to guarantee that everyone will perform these actions. Therefore, relying on awareness and habit to "passively" reduce danger is insufficient; proactive measures should be taken to provide early warnings and eliminate potential hazards. This is a shortcoming of existing technology.

[0005] In view of this, it is very necessary to provide a safety warning device and control system for underground parking lots in order to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] The purpose of this invention is to address the deficiencies of the existing technology by providing a safety warning device and control system for underground parking lots, thereby solving the aforementioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A safety warning device for an underground parking lot includes: Several complete sets of devices, each complete set of devices includes an "L"-shaped line unidirectional detector and a display screen, wherein the "L"-shaped line unidirectional detector includes a probe and the display screen is an LED color display screen; The probe is connected to the LED color display screen via a signal line. Both the probe and the LED color display screen are connected to the power supply via power lines. The LED color display screen is fixed in the parking lot with fixing screws. Preferably, the LED color display screen includes: From top to bottom, the lights are divided into blue, yellow and red groups. The display method is that the "outer frame, numbers and arrows" flash in the same color and at the same speed. The arrows point to the direction of oncoming vehicles in the blind spot. Each group of lights is connected to the sensor through a signal line. The LED color display screen is installed vertically at the top center of the intersection, directly facing the driving lane. The installation site must be free of any objects that obstruct the driver's view of the display screen or block the probe's detection signal.

[0008] This LED color display screen achieves the following technical effects through its color-separated and directional display scheme: First, the graded warning effect: the three colors of blue, yellow and red correspond to the three distance levels of far, medium and near, respectively. It can quantify and grade the dynamic information of vehicles in the blind spot, so that the driver can intuitively and quickly judge the level and urgency of potential risks. It provides a clear basis for taking differentiated coping measures (such as slowing down to observe, preparing to brake, emergency avoidance, etc.) and effectively avoids misjudgment or panic caused by unclear information.

[0009] Secondly, the intuitive guidance effect: the flashing arrows directly indicate the direction of the risk source. Combined with color and numerical information, they form a coordinated prompt that can complete the information transmission in a very short time. This is in line with the driver's cognitive habits in a tense driving environment, which greatly reduces the driver's cognitive load, significantly shortens the reaction time, and improves driving safety.

[0010] Preferably, the probe includes: Starting from the LED color display installation location, probes are installed extending towards each lane. Each complete device includes probe A, probe B, and probe C. The installation position of probe A is 15m away from the LED color display screen in a straight line; the installation position of probe B is 35m away from the LED color display screen in a straight line; and the installation position of probe C is 55m away from the display screen in a straight line.

[0011] The probes are all installed at the top center of the driving lane, and the detection area is adjusted to a range of 25m in the longitudinal direction and 2m in the transverse direction.

[0012] By constructing a forward-looking sensing network using a distributed layout of three probes, the following technical effects can be achieved: First, seamless coverage and early detection: By setting up three detection lines (A, B, and C) along the critical path from 55m to 10m, a deep, tiered early warning and perception system is formed, enabling full monitoring of the entrance passage in blind spots. This layout ensures that no matter what speed a vehicle approaches the intersection, the system can detect its movement at the furthest point (55 meters) in advance, buying valuable time for the entire early warning chain and achieving true "prevention before the event."

[0013] Secondly, precise positioning and anti-interference: The detection area of ​​each probe is precisely limited to a range of 25m longitudinally and 2m laterally, forming a highly directional detection field. This narrow and long detection area can effectively focus on the driving lane, significantly reducing false alarms caused by accidental triggering by vehicles or pedestrians in adjacent lanes, and ensuring the accuracy and reliability of the system's trigger signal.

[0014] Furthermore, the present invention also provides a control system for a safety warning device in an underground parking lot, comprising: The signal acquisition and processing module contains: Used to continuously receive trigger signals from probes A, B, and C, and to determine dynamic events such as vehicles entering, leaving, or remaining in the detection area; The display driver control module contains: It is connected to the signal acquisition and processing module and is used to drive the corresponding light group on the LED color display screen to flash according to the received logic instructions; The power management module contains: It is configured to draw power from the basement lighting circuit to provide a safe and stable DC power supply for all components of the system.

[0015] Preferably, the signal acquisition and processing module includes: It continuously receives trigger signals from probes A, B, and C, judges vehicle dynamic events, including "vehicle entering" and "vehicle leaving" specific detection areas, and identifies "vehicle lingering for a long time" status; and converts the judgment results of this dynamic event into corresponding logical instructions (such as "Area A trigger", "Area B clear", "Area C lingering") and sends them to the display driver control module.

[0016] The technical effects achieved by this module are as follows: Intelligent vehicle dynamic event recognition: The module can not only sense the presence of vehicles, but also accurately distinguish between three core states: "entering," "leaving," and "lingering." This intelligent judgment capability enables the system to realistically reflect the complex traffic conditions at intersections. For example, it can effectively identify vehicles temporarily parked in blind spots and maintain warnings, overcoming the limitations of traditional single-trigger modes and avoiding the information loss caused by ordinary sensors only providing switch signals. This provides the display driver module with rich and accurate decision-making basis, ensuring the accuracy and real-time performance of system decisions from the source.

[0017] Preferably, the display driver control module includes: It receives instructions from the signal acquisition and processing module and drives the LED display screen to output visual information. If a vehicle is detected entering its detection area by probe A, the red light group on the display immediately flashes, showing a red outer frame, the number 10 in red, and a red arrow pointing in the direction of the vehicle. The light group stops flashing when the vehicle leaves the detection area. If a vehicle is detected entering its detection area by probe B, the yellow light group on the display immediately flashes, showing a yellow outer frame, the number 30 in yellow, and a yellow arrow pointing in the direction of the vehicle. The light group stops flashing when the vehicle leaves the detection area. If a vehicle is detected entering its detection area by probe C, the blue light group on the display immediately flashes, showing a blue outer frame, the number 50 in blue, and a blue arrow pointing in the direction of the vehicle. The light group stops flashing when the vehicle leaves the detection area. If a vehicle is parked in the passage within the detection area of ​​a certain probe for a long time, the LED display screen corresponding to that probe will flash for an extended period of time. If no other vehicles pass by after the vehicle leaves the detection area of ​​probes A, B, and C, the display screen will turn off and the device will be in standby mode.

[0018] The technical effects achieved by this module are as follows: First, precise mapping and low-latency feedback: The module ensures precise mapping and low response latency between probe-detected events and the visual output of the display screen. When a vehicle enters any detection area, the corresponding warning information can be activated and displayed immediately, achieving real-time, synchronous feedback on the dynamic traffic environment, effectively capturing transient risks, and effectively preventing warning failures due to system delays.

[0019] Secondly, complex multi-target state management: The module has the ability to handle complex scenarios such as multi-probe triggering and vehicle state switching. It can orderly schedule and manage multiple concurrent display requests according to preset priority logic (such as proximity alarm priority), ensuring that in critical situations (such as vehicles approaching from multiple directions at the same time), secondary information can be filtered out and the most critical and urgent safety information can be conveyed to the driver, avoiding confusion and conflict of display information.

[0020] Preferably, the power management module is as follows: The 220V lighting power in the basement is converted into stable and safe low-voltage DC power required by each component of a complete unit, ensuring continuous and stable system operation.

[0021] The technical effects achieved by this module are as follows: First, high reliability is guaranteed: Through power conversion and voltage regulation design, this module can effectively suppress voltage fluctuations and electrical noise that may exist in the underground power grid, provide stable operating voltage for core electronic components such as probes and displays, reduce the risk of system failure or restart due to power problems, and ensure the uninterrupted and reliable operation of the warning system.

[0022] Secondly, enhanced safety and wider adaptability: Converting AC power to safe low-voltage DC power significantly improves the electrical safety of the equipment during on-site installation and maintenance. Simultaneously, this design allows the device to directly draw power from the widely distributed lighting circuits within the basement, eliminating the need for additional high-voltage lines, greatly reducing installation costs and complexity, and significantly enhancing the system's engineering adaptability and installation convenience.

[0023] The beneficial effects of this invention are that it significantly improves traffic safety and early warning capabilities during driving in underground parking garages. Specifically, when a vehicle is approximately 55 meters before various intersections in the garage, the device can issue an advance warning to the driver, effectively identifying traffic conditions in the left and right blind spots created by parked vehicles or building structures. Regardless of whether there are vehicles traveling relative to each other, in opposite directions, or stationary in the blind spots, the system can detect their presence in real time and accurately display their distance from the intersection. The device responds quickly and makes accurate judgments, delivering warning signals to the driver immediately through visual means such as sound and light, giving them more time to take appropriate actions, such as slowing down, flashing lights, honking the horn, or emergency braking, thereby significantly reducing the risk of accidents such as scrapes, rear-end collisions, and other safety incidents caused by obstructed vision. Simultaneously, the device's detection mechanism is sensitive and reliable, the signal expression is concise and intuitive, the display interface is bright and highly recognizable, and it remains clearly visible under various lighting conditions; the system operates stably, has strong anti-interference capabilities, and is suitable for the complex environment of underground parking garages. In terms of cost and promotion, this product features a reasonable structural design, low manufacturing and maintenance costs, and a simple installation process. It requires no large-scale modification of existing parking garage structures, making it ideal for large-scale production and widespread deployment. Its application scope not only covers the power industry and property management systems but can also be extended to parking garage safety management scenarios in various social sectors such as education, healthcare, government units, and commercial complexes, demonstrating high versatility and adaptability. In summary, this invention can significantly alleviate the hidden dangers of blind spots in parking garages and plays a vital role in improving the overall traffic order and safety level of parking facilities.

[0024] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.

[0025] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the composition and installation of a safety warning device for an underground parking lot provided by the present invention.

[0028] Figure 2 This is a front view of the LED display screen of a safety warning device and control system for an underground parking lot provided by the present invention. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation methods.

[0030] Example 1: like Figure 1 As shown in the figure, this embodiment provides a safety warning device for an underground parking lot, comprising: Several complete sets of devices, each complete set of devices includes an "L"-shaped line unidirectional detector and a display screen. The "L"-shaped line unidirectional detector includes three probes, and the display screen includes three LED color displays, each measuring 0.9m × 0.4m × 0.05m (length × width × thickness). The probe is connected to the LED color display screen via a signal line. Both the probe and the LED color display screen are connected to the power supply via power lines. The LED color display screen is fixed in the parking lot with fixing screws. Two complete single-unit devices are required for an "L"-shaped intersection; four complete single-unit devices are required for a T-shaped intersection; and eight complete single-unit devices are required for a cross-shaped intersection.

[0031] Figure 1 The annotations for the Chinese illustrations are shown in Table 1.

[0032] Table 1

[0033] The LED color display screen includes: From top to bottom, the lights are divided into blue, yellow and red groups. The display method is that the "outer frame, numbers and arrows" flash at the same speed and color. The arrows point to the direction of oncoming vehicles in the blind spot (left or right). Each group of lights is connected to the sensor via a signal line. The LED color display screen is installed vertically at the top center of the intersection, directly facing the driving lane. The installation site must be free of any objects that obstruct the driver's view of the display screen or block the probe's detection signal.

[0034] This LED color display screen achieves the following technical effects through its color-separated and directional display scheme: First, the graded warning effect: the three colors of blue, yellow and red correspond to the three distance levels of far, medium and near, respectively. It can quantify and grade the dynamic information of vehicles in the blind spot, so that the driver can intuitively and quickly judge the level and urgency of potential risks. It provides a clear basis for taking differentiated coping measures (such as slowing down to observe, preparing to brake, emergency avoidance, etc.) and effectively avoids misjudgment or panic caused by unclear information.

[0035] Secondly, the intuitive guidance effect: the flashing arrows directly indicate the direction of the risk source. Combined with color and numerical information, they form a coordinated prompt that can complete the information transmission in a very short time. This is in line with the driver's cognitive habits in a tense driving environment, which greatly reduces the driver's cognitive load, significantly shortens the reaction time, and improves driving safety.

[0036] The probe includes: Starting from the LED color display installation location, probes are installed extending towards each lane. Each complete device includes probe A, probe B, and probe C. The installation position of probe A is 15m away from the LED color display screen in a straight line; the installation position of probe B is 35m away from the LED color display screen in a straight line; and the installation position of probe C is 55m away from the display screen in a straight line.

[0037] The probes are all installed at the top center of the driving lane, and the detection area is adjusted to a range of 25m in the longitudinal direction and 2m in the transverse direction.

[0038] This section utilizes a three-probe distributed layout to form the system's forward-looking sensing network, achieving the following technical effects: First, seamless coverage and early detection: By setting up three detection lines (A, B, and C) along the critical path from 55m to 10m, a deep, tiered early warning and perception system is formed, enabling full monitoring of the entrance passage in blind spots. This layout ensures that no matter what speed a vehicle approaches the intersection, the system can detect its movement at the furthest point (55 meters) in advance, buying valuable time for the entire early warning chain and achieving true "prevention before the event."

[0039] Secondly, precise positioning and anti-interference: The detection area of ​​each probe is precisely limited to a range of 25m longitudinally and 2m laterally, forming a highly directional detection field. This narrow and long detection area can effectively focus on the driving lane, significantly reducing false alarms caused by accidental triggering by vehicles or pedestrians in adjacent lanes, and ensuring the accuracy and reliability of the system's trigger signal.

[0040] Example 2: This embodiment provides a control system for a safety warning device in an underground parking lot, comprising: The signal acquisition and processing module contains: Used to continuously receive trigger signals from probes A, B, and C, and to determine dynamic events such as vehicles entering, leaving, or remaining in the detection area; The display driver control module contains: It is connected to the signal acquisition and processing module and is used to drive the corresponding light group on the LED color display screen to flash according to the received logic instructions; The power management module contains: It is configured to draw power from the basement lighting circuit to provide a safe and stable DC power supply for all components of the system.

[0041] The signal acquisition and processing module includes: It continuously receives trigger signals from probes A, B, and C, judges vehicle dynamic events, including "vehicle entering" and "vehicle leaving" specific detection areas, and identifies "vehicle lingering for a long time" status; and converts the judgment results of this dynamic event into corresponding logical instructions (such as "Area A trigger", "Area B clear", "Area C lingering") and sends them to the display driver control module.

[0042] The technical effects achieved by this module are as follows: Intelligent vehicle dynamic event recognition: The module's core capability goes beyond basic vehicle presence perception, achieving accurate identification and continuous tracking of three core dynamic behaviors: "entering," "leaving," and "lingering." This fine-grained state recognition capability allows the system to realistically reproduce and respond to the complex and ever-changing traffic conditions at intersections. For example, when a vehicle temporarily stops or waits in a blind spot, the system can continuously maintain a "lingering" warning, unlike traditional sensors that might misjudge as no target or lost target due to stable signals. This completely overcomes the limitations of ordinary sensors that only provide "switch" signals, such as limited information and poor scene adaptability. Through a deep understanding of dynamic events, this module provides the backend display driver and decision-making unit with richer and more accurate situational information far exceeding that of a "present / absent" vehicle, ensuring the accuracy, foresight, and real-time response of the entire system's decision-making from the source of information perception, thus establishing the fundamental difference between intelligent early warning and passive triggering.

[0043] The display driver control module includes: It receives instructions from the signal acquisition and processing module and drives the LED display screen to output visual information. If a vehicle is detected entering its detection area by probe A, the red light group on the display immediately flashes, showing a red outer frame, the number 10 in red, and a red arrow pointing in the direction of the vehicle. The light group stops flashing when the vehicle leaves the detection area. If a vehicle is detected entering its detection area by probe B, the yellow light group on the display immediately flashes, showing a yellow outer frame, the number 30 in yellow, and a yellow arrow pointing in the direction of the vehicle. The light group stops flashing when the vehicle leaves the detection area. If a vehicle is detected entering its detection area by probe C, the blue light group on the display immediately flashes, showing a blue outer frame, the number 50 in blue, and a blue arrow pointing in the direction of the vehicle. The light group stops flashing when the vehicle leaves the detection area. If a vehicle is parked in the passage within the detection area of ​​a certain probe for a long time, the LED display screen corresponding to that probe will flash for an extended period of time. If no other vehicles pass by after a vehicle leaves the detection area of ​​probes A, B, and C, the LED display screen will turn off and the device will be in standby mode.

[0044] The specific implementation shown in this embodiment is as follows: Figure 2 As shown, Figure 2 2-1 indicates that when there are no vehicles in either the left or right lane, the LED color display screen will be in standby mode with no display. Figure 2 2-2 in the diagram represents the LED color display screen showing the presence of vehicles at 30m and 10m on the left lane and at 50m on the right lane. Figure 2 2-3 refers to the LED color display screen showing the situation when there is a vehicle 30m away on the left lane and vehicles 50m, 30m, and 10m away on the right lane. Figure 22-4 in the image shows the LED color display screen when there is a vehicle 10m away on the left side of the lane.

[0045] The technical effects achieved by this module are as follows: First, precise mapping and low-latency feedback: The module establishes a closed-loop response mechanism from perception to display. Through direct signal connection at the hardware level and software protocol optimization, it achieves precise mapping and millisecond-level response between probe-detected events and the visual output of the display screen. When a vehicle enters any detection area, the system can immediately activate and update the corresponding warning information without any visual delay. This real-time, synchronous feedback capability can accurately capture and present the rapidly changing vehicle dynamics in the parking garage environment, even identifying potential risks that approach at high speed or appear suddenly without lag. This feature effectively eliminates the problem of delayed or invalid warning information caused by slow system response, providing a solid and reliable technical guarantee for the driver's decision-making and operation at critical moments, and significantly improving the timeliness and reliability of the entire warning process.

[0046] Secondly, complex multi-target state management: The module has the ability to handle complex scenarios such as multi-probe triggering and vehicle state switching. It can orderly schedule and manage multiple concurrent display requests according to preset priority logic (such as proximity alarm priority), ensuring that in critical situations (such as vehicles approaching from multiple directions at the same time), secondary information can be filtered out and the most critical and urgent safety information can be conveyed to the driver, avoiding confusion and conflict of display information.

[0047] The power management module includes: The 220V lighting power in the basement is converted into stable and safe low-voltage DC power required by each component of a complete unit, ensuring continuous and stable system operation.

[0048] The technical effects achieved by this module are as follows: First, high reliability is guaranteed: Through power conversion and voltage regulation design, this module can effectively suppress voltage fluctuations and electrical noise that may exist in the underground power grid, provide stable operating voltage for core electronic components such as probes and displays, reduce the risk of system failure or restart due to power problems, and ensure the uninterrupted and reliable operation of the warning system.

[0049] Secondly, enhanced safety and wider adaptability: Converting AC power to safe low-voltage DC power significantly improves the electrical safety of the equipment during on-site installation and maintenance. Simultaneously, this design allows the device to directly draw power from the widely distributed lighting circuits within the basement, eliminating the need for additional high-voltage lines, greatly reducing installation costs and complexity, and significantly enhancing the system's engineering adaptability and installation convenience.

[0050] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The methods disclosed in the embodiments are described simply because they correspond to the systems disclosed in the embodiments; relevant details can be found in the method section.

[0051] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0052] In the embodiments provided by this invention, it should be understood that the disclosed systems, methods, and approaches can be implemented in other ways. For example, the system embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between systems or units may be electrical, mechanical, or other forms.

[0053] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0054] In addition, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit.

[0055] Similarly, in the various embodiments of the present invention, each processing unit can be integrated into a functional module, or each processing unit can exist physically, or two or more processing units can be integrated into a functional module.

[0056] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0057] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0058] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.

Claims

1. A safety warning device for an underground parking lot, characterized in that, include: Several complete sets of devices, each complete set of devices includes an "L"-shaped line unidirectional detector and a display screen, wherein the "L"-shaped line unidirectional detector includes a probe and the display screen is an LED color display screen; The probe is connected to the LED color display screen via a signal cable. Both the probe and the LED color display screen are connected to the power supply via power cables. The LED color display screen is fixed in the parking lot with fixing screws.

2. The safety warning device for an underground parking lot according to claim 1, characterized in that, The LED color display screen includes: From top to bottom, the lights are divided into blue, yellow, and red groups. The display method is that the "outer frame, numbers, and arrows" flash in the same color and at the same speed. The arrows point to the direction of oncoming vehicles in the blind spot. Each group of lights is connected to the sensor via a signal cable. The LED color display screen is vertically installed at the top center of the intersection, directly facing the driving lane.

3. A safety warning device for an underground parking lot according to claim 2, characterized in that, Starting from the LED color display installation location, probes are installed extending towards each lane. Each complete device includes probe A, probe B, and probe C. The installation position of probe A is 15m away from the LED color display screen in a straight line; the installation position of probe B is 35m away from the LED color display screen in a straight line; and the installation position of probe C is 55m away from the display screen in a straight line.

4. A safety warning device for an underground parking lot according to claim 3, characterized in that, The probes are all installed at the top center of the driving lane, and the detection area is adjusted to a range of 25m in the longitudinal direction and 2m in the transverse direction.

5. A control system for a safety warning device in an underground parking lot, characterized in that, include: The signal acquisition and processing module is used to continuously receive the trigger signals from the probe and determine dynamic events such as vehicles entering, leaving, or remaining in the detection area. The display driver control module is connected to the signal acquisition and processing module and is used to drive the corresponding light group on the LED color display screen to flash according to the received logic instructions. The power management module is configured to draw power from the basement lighting circuit to provide a safe and stable DC power supply for all components of the system.

6. The control system for a safety warning device in an underground parking lot according to claim 5, characterized in that, The signal acquisition and processing module includes: It continuously receives trigger signals from probes A, B, and C, judges the dynamic events of the vehicle, and converts the judgment results of the dynamic events into corresponding logical instructions and sends them to the display drive control module.

7. The control system for a safety warning device in an underground parking lot according to claim 5, characterized in that, The vehicle dynamic events that the signal acquisition and processing module can determine include: "Vehicle enters" detection area, "Vehicle leaves" detection area, and "Vehicle stays in" detection area for an extended period of time.

8. The control system for a safety warning device in an underground parking lot according to claim 5, characterized in that, The display driver control module includes: It receives instructions from the signal acquisition and processing module and drives the LED display screen to output visual information.

9. The control system for a safety warning device in an underground parking lot according to claim 5, characterized in that, The visual output in the display driver control module includes: If a vehicle is detected entering its detection area by probe A, the red lights on the display immediately flash, showing a red frame, the number 10 in red, and a red arrow pointing in the direction of the vehicle. The lights stop flashing when the vehicle leaves the detection area. If a vehicle is detected entering its detection area by probe B, the yellow lights on the display immediately flash, showing a yellow frame, the number 30 in yellow, and a yellow arrow pointing in the direction of the vehicle. The lights stop flashing when the vehicle leaves the detection area. If a vehicle is detected entering its detection area by probe C, the blue lights on the display immediately flash, showing a blue frame, the number 50 in blue, and a blue arrow pointing in the direction of the vehicle. The lights stop flashing when the vehicle leaves the detection area. If a vehicle is parked in the passage within the detection area of ​​a certain probe for a long time, the LED display screen corresponding to that probe will flash for an extended period of time. If no other vehicles pass by after the vehicle leaves the detection area of ​​probes A, B, and C, the display screen will turn off and the device will be in standby mode.

10. The control system for a safety warning device in an underground parking lot according to claim 5, characterized in that, The power management module converts the 220V lighting power in the basement into stable and safe low-voltage DC power required by each component of a complete unit.

Images