Embeded ALPR Parking Terminal

Wireless ALPR Video Parking Terminal

(Model:XDN-P-LY-B01 / XDN-P-LY-B01W)

catalogue

1. Design Requirements 3 3

2. Product Structure 3 3

3. System Topology Diagram 6 6

4. Product Solution 7 7

4.1 Detection Method 7 7

4.2 Trigger Detection Unit 12 12

4.3 Video Acquisition Unit 12 12

4.4 Backlighting Unit 12 12

4.5 Transmission Unit 12 12

4.6 Lithium Battery Cell 13 13

1. Product Parameters 13 13

2. Product Features 14 14

3. Scenario Diagram 14 14

1. Design Requirements

To address various parking application scenarios—including “linear,” “non-linear,” “diagonal,” and semi-enclosed parking—our company has developed a third-generation embedded video solution. This solution leverages IoT sensing technology, low-power consumption technologies, and visual image/video analysis technologies, while addressing the billing and evidence-verification requirements specific to the parking industry. Our system is technologically world-leading, features rapid deployment capabilities, and offers straightforward maintenance during operation.

Roadside machine products.

This product is designed for installation along roadside sidewalks, suitable for all outdoor environments; it meets the IP68 protection rating standard and employs a dual-composite detection technology mode, utilizing low-power front-end data acquisition and AI image processing to wirelessly transmit data to a cloud server.

License plate recognition achieves higher overall accuracy.

A wireless video terminal covers a single parking space and enables unmanned video surveillance of parking spaces within the roadside detection zone; it supports the upload and recording of information such as vehicle entry, parking completion, exit times, and captured images, while offering rapid detection speeds.

It enables effortless implementation of intelligent parking fee management systems for urban areas.

The use of a wire-free video terminal eliminates the need for traditional video acquisition equipment to perform costly and inefficient procedures—such as excavating roads or laying power lines and optical fiber cables; on the other hand, it enables continuous operation for more than 10 hours thanks to its built-in high-capacity lithium battery.

The monthly operating hours provide a convenient battery swapping maintenance solution for operational management services.

2. Product Structure

2.1 Appearance and Structure

The product’s exterior (ID) design features a flying disc-shaped main body connected to a vertical battery compartment via a waterproof rotating knob ring.

Next, the outer anti-theft screws are securely fastened, facilitating the replacement of the lithium battery and enabling the activation of the device’s anti-theft function.

The product detection system employs a composite detection approach utilizing both video and millimeter-wave radar modules, with the camera and backlighting module integrated as a single embedded unit.

It features a highly integrated 4G LTE transmission module and an LED backlight unit; the lower section houses the cylindrical lithium-ion battery enclosure.

2.2 Installation Method

The product features a circular disc-shaped body connected to a vertical battery compartment; the connection between them is secured by a waterproof rotating knob ring, while the outer side is fastened with anti-theft screws, facilitating the replacement of the lithium battery and preventing equipment theft. The entire casing is constructed from high-strength composite materials consisting of metal, ABS, and PVC, providing robust protection.

The product meets an IP68 rating, making it well-suited for complex outdoor environments. Once installed underground, only the “dome-shaped” upper portion is exposed.

(Actual site installation photo)

The embedded curb machine is suitable for a wide range of installation scenarios and installation angles:

1. Sidewall “single-row” installation method:

 

1. The “Non” vertical installation method:

 

 

1. Side-by-side diagonal installation method:

3. System topology diagram

Supports both third-party middleware and direct connection modes. As shown in the figure below:

1. Through the third-party middleware integration model

(Advantages: Fast integration, easy maintenance and management)

 

1. Direct Connection Mode

(Features: Data security; however, integration is relatively complex)

4. Product Solution

4.1 Detection Method

The detection section is triggered by a millimeter-wave radar module, while the video camera captures video or images.

4.1.1 Utilization of millimeter-wave radar detection module

To ensure the accuracy of vehicle entry and exit detection, as well as to perform precise interference rejection for obstacles such as non-motorized vehicles and pedestrians, a 24GHz millimeter-wave radar is employed. The front-end unit can accurately measure the lateral parking, vertical parking, and diagonal parking distances within a range of 5 meters from the terminal device of this product.

Judge when vehicles enter, come to a stop, or exit the area, and provide corresponding captured images.

Side-parking violation snapshot images:

(Enter)

(Stationed)

（ to put off ）

(Empty parking space)

Vertical parking snapshot images:

（ entrance ）

(Stationed)

（ to put off ）

（ a vacant or unoccupied seat ）

4.1.2 Video Detection Camera

The system features built-in embedded image algorithms that can further validate the aforementioned detection results to verify whether they comply with the specifications of the detected vehicle.

Basic characteristics (such as the front end profile, headlights, chassis, vehicle model, and other elements).

4.2 Trigger Detection Unit

The triggering unit employs millimeter-wave radar for comprehensive judgment.

Due to frequent vehicle entry and exit, issues such as parking misalignment, line crossing, wrong-way driving, and unlicensed vehicles often occur; therefore, appropriate measures must be taken.

The cost is relatively high, but it offers stability and reliability, accurate trigger detection, and incorporates a microcontroller with ultra-low power consumption.

4.3 Video Acquisition Unit

To deliver outstanding imaging performance under various lighting conditions in complex outdoor environments, it employs low-light and wide-range support.

A 5-megapixel high-definition CMOS camera unit with dynamic and backlight compensation, offering an image resolution of 2592×1944.

The video acquisition unit utilizes embedded algorithm software to automatically identify vehicle features and filter out invalid vehicles detected by radar.

For further analysis and assessment.

To ensure the video capture unit can promptly capture vehicle images, the product also features rapid wake-up and snapshot functionality.

The video capture unit can detect ambient light intensity and automatically or remotely control the activation/deactivation of LED fill lights.

The lens or housing glass viewing window features a self-cleaning anti-dirt function, preventing lens contamination from compromising the image quality during photography.

4.4 Backlighting Unit

A single LED pixel is used for flash backlighting to ensure clear nighttime imaging, reduce image noise, and simultaneously address these issues.

In adverse conditions where license plate reflections make them difficult to see.

4.5 Transmission Unit

The front-end to back-end wireless transmission utilizes the 4G LTE network standard, with a response time of less than 3 seconds.

4.6 Lithium Battery Cells

To ensure a sustainable operating duration of 10 months, the lithium battery cells can utilize ultra-high-capacity polymer lithium-ion batteries with capacities ranging from 30,000 mAh to 50,000 mAh.

Battery replacement should be convenient and straightforward, while also taking into account sealing requirements such as waterproofing.

The system supports battery management and enables remaining charge monitoring; if the charge level falls below a preset capacity or threshold, an alert can be triggered via the backend interface.

5. Product Parameters

number	project	design value
1	Camera Resolution (Pixels)	500W CMOS
2	Maximum Resolution	2592×1944
3	Video encoding format, frame rate	H.264, H.265, MJPEG; features ISP algorithm-optimized image processing.
4	low-light	support
5	High-light suppression, wide dynamic range	support
6	transmission mode	4G LTE and FDD-LTE wireless connectivity (supports international communication; requires prior replacement of the communication module)
7	License Plate Recognition	Identification accuracy> 99%
8	Parking Space Status Monitoring	The vehicle enters, exits, or comes to a complete stop; three status detection outputs are generated. Vehicle detection accuracy> 98%
9	Status indicator light	Optional: Breathing indicator light flashing / Off
10	Trigger method	Millimeter-wave radar detection
11	battery capacity	Supports up to 50,000 mAh rechargeable lithium-ion battery
12	working voltage	7.4V output, maximum charging voltage: 8.4V
13	working temperature	-20℃~85℃
14	Work humidity	≤90% (No condensation)
15	Power consumption / Battery life	In fully charged operating mode, the device can be used for>10 months (based on 6 daily trips per berth; this duration depends on the battery capacity).
16	product size	Approx. 150 (H) × 190 (Φ) mm
17	weight	2.6kg
18	IP levels of protection	IP68

6. Product Features

order number	project	functional description
1	Image Forensics Feature	Record at least 4 images capturing the vehicle entering the berth, coming to a complete stop, departing from the berth, and vacating the berth, and transmit these images in real-time to the backend data center;
2	Transmission Function	The equipment supports 4G LTE transmission; data can be transmitted to the device management cloud platform via a proprietary protocol, and the collected data is then pushed to the parking fee collection application management platform.
3	Abnormal Parking Detection	For abnormal parking situations involving non-motorized vehicles such as bicycles, two-wheeled motorcycles, and trash bins, the equipment can detect these conditions and display them in the abnormal status bar.
4	License Plate Recognition Function	Supports domestic license plate recognition (supports plates from Hong Kong, Macau, Taiwan, and international plates; requires prior configuration depending on the version).
5	LED backlighting function	Turn on the LED flash automatically when taking photos.
6	Alarm Function	1. When the device’s camera feed is obstructed by foreign objects, the system can trigger a remote backend alarm; 2. When the battery power is insufficient, the system can send an alert to the backend; 3. When the device is tampered with without authorization, the system can trigger an alert to the backend.
7	Remote Management Function	The device can be accessed for management via a web interface or client software, supporting functions such as firmware maintenance, rebooting, and restoring to factory settings. It enables remote monitoring of the device’s operating status and wireless network signal strength; it also supports remote control of snapshot capture, as well as parameter settings for scheduled snapshot capture.
8	Security Features	Utilizes the HTTPS secure transmission protocol and a proprietary encryption protocol; requires specific identity verification for login.
9	Time Function	Supports the NTP network automatic time synchronization function; the device’s timing accuracy features an instantaneous error of less than 1 second, with clock error and timing error both being less than 1 second.
10	Character overlay function (OSD)	You can overlay necessary character information on video images and screenshots using the IE browser.

1. Scene images