Wiring-free video pile

Abstract

The invention, which belongs to the technical field of intelligent traffic, discloses a wiring-free video pile comprising a microwave radar module, an MCU module, an SoC module, a camera module and a wireless communication module. The microwave radar module transmits linear frequency modulation electromagnetic waves, receives echoes and calculates distance and speed information of a front object; the MCU module periodically activates radar detection and judges whether an object is an effective vehicle target according to object motion information; the SoC module is awakened after confirming an effective target, and controls the camera module to collect an image; and the wireless communication module uploads the data to a cloud server. A layered wake-up mechanism is adopted, through radar pre-detection and MCU logic judgment, the high-power-consumption module is activated only when the parking behavior is confirmed, and the battery endurance time is remarkably prolonged; meanwhile, real parking and interference targets are effectively distinguished by combining double criteria of speed and distance, the recognition accuracy rate reaches 98% or above, and the technical problems that an existing wiring-free product is high in false triggering rate and short in endurance are solved.

Description

Technical Field

[0001] This invention relates to the field of intelligent transportation technology, specifically to a wire-free video pole. Background Technology

[0002] In the field of smart parking, current mainstream video parking pile products include low-position and high-position video parking piles with cabling. Traditional cabling solutions require excavating the road surface to lay power and network cables, resulting in long construction cycles, damage to municipal facilities, and traffic congestion. Furthermore, high construction and maintenance costs limit their widespread adoption. While cabling-free solutions avoid road damage, they still have significant drawbacks: outdoor equipment is susceptible to high temperatures and heavy rain, leading to high failure rates; in battery-powered mode, insufficient power management results in short battery life, and maintenance costs account for over 40%. Existing cabling-free products often employ integrated technology, with the radar module and camera module not effectively separated. This means that any object triggering the radar (such as a pedestrian or animal) will activate the camera for identification, causing significant wasted energy. This design not only reduces battery life but also increases the false alarm rate, affecting the accuracy and efficiency of parking management. Therefore, there is an urgent need for a cabling-free video parking pile solution that is easy to install, has optimized power consumption, and is highly reliable, to address the core pain points of existing technologies, such as complex construction, high maintenance costs, and high false trigger rates. Summary of the Invention

[0003] The purpose of this invention is to provide a wire-free video stake, in which the radar module is controlled independently by the MCU module, reducing unnecessary wake-ups of the SoC module and camera module, lowering the power consumption of the wire-free video stake, and improving the battery life.

[0004] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A wire-free video anchor includes a microwave radar module, an MCU module that connects to and controls the microwave radar module, a SoC module connected to the MCU module, and a camera module connected to the SoC module. The microwave radar module is used to transmit linear frequency modulated electromagnetic waves and receive reflected echoes to calculate the motion information of objects in front. The MCU module is used to periodically activate the microwave radar module for detection, and to determine whether the object is a valid vehicle target based on the object motion information detected by the microwave radar module. The SoC module is activated when the MCU module determines that a valid vehicle target exists. The camera module acquires images when the SoC module is woken up.

[0005] Here, "valid vehicle targets" refers to parked vehicles. The MCU module distinguishes between valid vehicle targets and non-vehicle interference (such as pedestrians and animals) by analyzing the object's speed and distance data. The SoC module and camera module are only activated when a valid vehicle target is identified. The presence of a vehicle is determined by the microwave radar associated with the MCU module. If no vehicle is present, the SoC module is not activated to wake the camera, thus reducing unnecessary power consumption. The SoC module is the business processing module. The camera module images within the SoC module and waits for license plate recognition. Simultaneously, the SoC module obtains time from the 4G module to construct data packets. The license plate recognition result is judged by the SoC's business logic. After the data packet is reported to the platform cloud server, the SoC module is manually shut down.

[0006] The microwave radar module determines whether a vehicle is parked by calculating its speed and distance, thus avoiding accidental wake-up of the SoC module. The microwave radar detects the emitted linear frequency modulated electromagnetic waves and receives the reflected echoes from vehicles or objects to calculate the vehicle's speed and distance from the radar. This data is used to determine whether the vehicle is parked or merely using a parking space without actually parking.

[0007] The MCU module activates the microwave radar module every 200ms to 800ms to detect changes in the object's state. The wire-free video stake is generally in a dormant state. In this state, the MCU module activates the microwave radar every 500ms to detect whether there are objects within a certain range in front of the device. If it determines that a vehicle is parked, it wakes up the SoC module by activating a high-level signal.

[0008] The wire-free video stake also includes a wireless communication module for data interaction with the server. The wireless communication module supports 4G.

[0009] The MCU module and SoC module transmit data to the platform cloud server via the wireless communication module according to the MQTT and HTTP protocols, respectively. This invention distinguishes between data reporting by the MCU module and the SoC module; the MCU module and SoC module of the wire-free video stake are independent. The MCU module reports heartbeat packets, dynamic information packets, and static information packets at preset intervals and receives commands from the server. The MCU module operates independently, reporting heartbeat packets at intervals (4 hours), dynamic information packets daily, and static information packets every 72 hours. The SoC module obtains time data from the wireless communication module to construct data packets and report them to the server. These data packets include vehicle entry data packets and / or timed capture data packets and / or vehicle exit data packets and / or license plate obstruction alarm event data packets.

[0010] A method for operating a wire-free video anchor includes the following steps: The MCU module periodically excites the microwave radar module to detect objects; The radar module emits linear frequency modulated electromagnetic waves and receives the echoes. The mixer generates an intermediate frequency signal, which is then converted into a digital signal by an ADC; Perform FFT spectrum analysis on digital signals to extract target distance and velocity information; The target point cloud is separated by clustering algorithm, and the separated target is dynamically tracked and its trajectory predicted. If the target vehicle is identified as a valid vehicle, the MCU module wakes up the SoC module by using a high-level signal. The SoC module controls the camera module to acquire images and perform license plate recognition, construct data packets, and report them.

[0011] The MCU module determines a valid vehicle target based on the following conditions: the speed of the detected object is lower than a preset threshold; the distance between the object and the video stake remains stable for a preset duration; the MCU module determines the vehicle target as valid and wakes up the SoC module only when the above conditions are met simultaneously.

[0012] By transmitting linear frequency modulated electromagnetic waves using microwave radar and analyzing the echo signals, combined with FFT spectrum analysis and clustering algorithms, the distance and speed information of the target can be accurately extracted, effectively distinguishing vehicles from other interference objects (such as pedestrians and animals) and reducing the false trigger rate. By using clustering algorithms to separate the target point cloud and perform trajectory prediction, the vehicle's motion status can be tracked in real time, ensuring that subsequent operations are triggered only for targets that meet the characteristics of parking behavior (such as speed approaching zero and distance being stable), thus avoiding invalid wake-ups.

[0013] The beneficial effects of this invention are as follows: This invention provides a wiring-free video stake to solve three major pain points: road construction damage, data misjudgment, and high device power consumption. By controlling the radar module independently through an MCU module, the SoC module is not required, significantly reducing the power consumption during each device wake-up. The wiring-free video stake of this invention can extend the original battery life by approximately 20% (based on a fully charged battery), achieving a simplified deployment time of 10 minutes and a 98.5% recognition accuracy rate. Attached Figure Description

[0014] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1This is a flowchart illustrating the process of determining valid vehicle targets using a wireless video stake system according to the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Example 1 A wire-free video anchor includes a microwave radar module, an MCU module that connects to and controls the microwave radar module, a SoC module connected to the MCU module, and a camera module connected to the SoC module. The microwave radar module is used to transmit linear frequency modulated electromagnetic waves and receive reflected echoes to calculate the motion information of objects in front. The MCU module is used to periodically activate the microwave radar module for detection, and to determine whether the object is a valid vehicle target based on the object motion information detected by the microwave radar module. The SoC module is activated when the MCU module determines that a valid vehicle target exists. The camera module acquires images when the SoC module is woken up.

[0019] Here, "valid vehicle targets" refers to parked vehicles. The MCU module distinguishes between valid vehicle targets and non-vehicle interference by analyzing the object's speed and distance data. The SoC module and camera module are only activated when a valid vehicle target is identified. The presence of a vehicle is determined by the microwave radar associated with the MCU module. If no vehicle is present, the SoC module is not activated to wake the camera, thus reducing unnecessary power consumption. The SoC module is the business processing module. The camera module images within the SoC module and waits for license plate recognition. Simultaneously, the SoC module obtains time from the 4G module to construct data packets. The license plate recognition result is judged by the SoC's business logic. After the data packet is reported to the platform cloud server, the SoC module is manually shut down.

[0020] The microwave radar module determines whether a vehicle is parked by calculating its speed and distance, thus avoiding accidental wake-up of the SoC module. The microwave radar detects the emitted linear frequency modulated electromagnetic waves and receives the reflected echoes from vehicles or objects to calculate the vehicle's speed and distance from the radar. This data is used to determine whether the vehicle is parked or merely using a parking space without actually parking.

[0021] The MCU module activates the microwave radar module every 200ms to 800ms to detect changes in the object's state. The wire-free video stake is generally in a dormant state. In this state, the MCU module activates the microwave radar every 500ms to detect whether there are objects within a certain range in front of the device. If it determines that a vehicle is parked, it wakes up the SoC module by activating a high-level signal.

[0022] The wire-free video stake also includes a wireless communication module for data interaction with the server. The wireless communication module supports 4G.

[0023] The MCU module and SoC module transmit data to the platform cloud server via the wireless communication module according to the MQTT and HTTP protocols, respectively. This invention distinguishes between data reporting by the MCU module and the SoC module; the MCU module and SoC module of the wire-free video stake are independent. The MCU module reports heartbeat packets, dynamic information packets, and static information packets at preset intervals and receives commands from the server. The MCU module operates independently, reporting heartbeat packets at intervals (4 hours), dynamic information packets daily, and static information packets every 72 hours. The SoC module obtains time data from the wireless communication module to construct data packets and report them to the server. These data packets include vehicle entry data packets and / or timed capture data packets and / or vehicle exit data packets and / or license plate obstruction alarm event data packets.

[0024] A method for operating a wire-free video anchor includes the following steps: S1. The MCU module periodically excites the microwave radar module to detect objects; S2. The radar module emits linear frequency modulated electromagnetic waves and receives the echoes; S3. The mixer generates an intermediate frequency signal, which is then converted into a digital signal by an ADC; S4. Perform FFT spectrum analysis on the digital signal to extract target distance and velocity information; S5. Separate the target point cloud using a clustering algorithm, and then perform dynamic tracking and trajectory prediction on the separated targets; S6. If the target vehicle is determined to be a valid vehicle target, the MCU module wakes up the SoC module by a high level. The S7.SoC module controls the camera module to acquire images and perform license plate recognition, construct data packets, and report them.

[0025] The MCU module determines valid vehicle targets based on the following conditions: The detected object's speed is below a preset threshold; The distance between the object and the video stake remains stable for a preset duration; The MCU module determines a vehicle target as valid and wakes up the SoC module only when all of the above conditions are met.

[0026] This invention employs a layered wake-up mechanism, using radar pre-detection and MCU logic judgment to activate the high-power module only when parking behavior is confirmed, significantly extending battery life. Simultaneously, by combining speed and distance as dual criteria, it effectively distinguishes between genuine parking targets and interfering targets, achieving an accuracy rate of over 98%. This solves the technical problems of high false triggering rate and short battery life in existing wireless products. The device is easy to deploy, requires no road excavation, and is suitable for smart parking management scenarios.

[0027] It should be noted that the terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the scope of this application. As shown in this specification, unless the context clearly indicates otherwise, words such as "a," "an," "an," and / or "the" do not specifically refer to the singular and may include the plural. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, 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, or apparatus that includes said element.

[0028] It should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0029] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any way. Any person skilled in the art may make some modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but these should still be regarded as the technology or embodiments that are substantially the same as the present invention. This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A wire-free video anchor, characterized in that, It includes a microwave radar module, an MCU module that connects to and controls the microwave radar module, a SoC module that connects to the MCU module, and a camera module that connects to the SoC module; The microwave radar module is used to transmit linear frequency modulated electromagnetic waves and receive reflected echoes to calculate the motion information of objects in front. The MCU module is used to periodically activate the microwave radar module for detection, and to determine whether the object is a valid vehicle target based on the object motion information detected by the microwave radar module. The SoC module is activated when the MCU module determines that a valid vehicle target exists. The camera module acquires images when the SoC module is woken up.

2. The wiring-free video anchor according to claim 1, characterized in that, The microwave radar module calculates the vehicle's speed and distance to determine whether the vehicle is parked, thus avoiding accidental wake-up of the SoC module.

3. The wiring-free video anchor according to claim 1, characterized in that, The MCU module triggers the microwave radar module every 200ms to 800ms to detect changes in the state of the object.

4. The wiring-free video anchor according to claim 1, characterized in that, It also includes a wireless communication module that supports 4G communication and is used for data interaction with the server.

5. The wiring-free video anchor according to claim 4, characterized in that, The MCU module and SoC module transmit data to the platform cloud server via the wireless communication module according to the MQTT protocol and the HTTP protocol, respectively.

6. A wiring-free video anchor according to claim 4, characterized in that, The MCU module reports heartbeat packets, dynamic information packets, and static information packets at preset intervals, and receives commands from the server.

7. A wiring-free video anchor according to claim 4, characterized in that, The SoC module obtains time from the wireless communication module to construct data packets and report them to the server. The data packets include vehicle entry data packets and / or timed capture data packets and / or vehicle exit data packets and / or license plate obstruction alarm event data packets.

8. The working method of the wireless video anchor according to any one of claims 1-7, characterized in that, The method includes the following steps: The MCU module periodically excites the microwave radar module to detect objects; If the target vehicle is identified as a valid vehicle, the MCU module wakes up the SoC module by using a high-level signal. The SoC module controls the camera module to acquire images and perform license plate recognition, construct data packets, and report them.

9. The working method according to claim 8, characterized in that, After the MCU module periodically excites the microwave radar module to detect objects using a mixer and an ADC analog-to-digital converter, the process includes: The radar module emits linear frequency modulated electromagnetic waves and receives the echoes. The mixer generates an intermediate frequency signal, which is then converted into a digital signal by an ADC; Perform FFT spectrum analysis on digital signals to extract target distance and velocity information; The target point cloud is separated by clustering algorithm, and the separated target is dynamically tracked and its trajectory predicted.

10. The working method according to claim 8, characterized in that, The MCU module determines valid vehicle targets based on the following conditions: The detected object's speed is below a preset threshold; The distance between the object and the video stake remains stable for a preset duration; The MCU module determines a vehicle target as valid and wakes up the SoC module only when all of the above conditions are met.

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