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Detailed Introduction

System Functions

Comprehensive Intersection Data

It can provide traffic data such as traffic flow, real-time speed/average speed, presence, occupancy rate, number of vehicles, number of queuing vehicles, distance from the leading vehicle to the stop line, queue length, and event detection;

Flexible deployment, capable of detecting occupancy data at any position of the intersection;

It can simulate loop coils to detect stationary or fast-moving vehicles, and the number of loop coils can be set based on actual needs;

Quick and Easy Installation

It can be installed using existing road infrastructure and poles, with a simple structure and convenient debugging;

Support for Software Correction

Support horizontal angle correction and simultaneous monitoring of incoming and outgoing lanes;

Visualization

It can access 1 channel of video data to realize system visualization and support target recognition;

Access to Geomagnetic Data

It can access up to 32 channels of geomagnetic data to realize multi-technology fusion detection;

All-Weather Operation

Suitable for any weather conditions, including rain, fog, snow, strong wind, ice, dust, etc.;

Diversified Power Supply Interfaces

POE/12-24VDC power supply/power supply from signal lights, facilitating installation;

Diversified Output Interfaces

IO switch signals (needing to be used with a converter), RJ45 network port (RS485 optional), and wireless transmission (optional), facilitating connection with various platforms;

It can realize wireless networking for data transmission, reducing construction difficulty;

Technical Parameters

Traffic flow detection accuracy: ≥98%

Vehicle speed detection range: 0km/h - 250km/h

Vehicle speed detection error: ＜2% (Note: The original "＞98%" may be a description error; the actual intended meaning is that the accuracy is over 98%, so the error is less than 2%)

Vehicle length detection accuracy: ＞90%

Queue length detection accuracy: ＞90%

Interval vehicle count detection accuracy: ≥90%

Queuing vehicle count detection accuracy: ＞90%

Detection accuracy of the distance from the leading vehicle to the stop line: ＞90%

Maximum longitudinal effective distance: 260m

Lateral detection range: 1 - 12 lanes

Simultaneous tracking target count: ≤128

Camera resolution: 5MP, starlight level

Focal length: 16mm

Number of lanes monitored by video simultaneously: ≤8

Identifiable low-speed and static targets: ≤256

Types of vehicle models identifiable: ≤6

Power supply mode: POE/12~24VDC

Average power of the whole machine: ≤9W

Interfaces: IO switch (needs to be used with a converter), RJ45 network port, RS485 (optional), wireless transmission (optional)

Operating temperature range: -40°C - +85°C

Operating humidity range: ≤93%RH

Shell protection class: IP65

Dimensions: 282mm × 212mm × 150mm (excluding bracket)

Electromagnetic compatibility: Complies with GB/T17618 "Limits and Measurement Methods for Immunity of Information Technology Equipment"

Mean Time Between Failures (MTBF): ＞100,000h

Output Data of Merit Data Center  

Timing Data:  

- Effective green time (the green time that vehicles can effectively utilize);  

- Green signal ratio (the proportion of time available for vehicle passage in one cycle, i.e., the ratio of the effective green time of a phase to the cycle length);  

- Cycle length;  

- Green time duration.  

Lane-level Real-time Data:  

- Traffic capacity (the maximum number of vehicles that can pass through a section of a road or an intersection per unit time);  

- Saturated headway (the time interval between consecutive vehicle heads traveling in the same lane at saturated traffic flow passing a point);  

- Lane green-end idle time (the duration from when the last vehicle in a lane passes the stop line to the end of the green light);  

- Green light idle time (the time during the green light when no vehicles pass);  

- Saturation (the ratio of the actual traffic flow of the vehicle stream to its saturated traffic capacity, which is one of the important indicators reflecting road service level);  

- Real-time saturated flow rate (the maximum number of vehicles that can pass the stop line during a continuous green light).  

Lane-level Statistical Data on Average Speed:  

- Maximum queue length;  

- Initial green queue length (the number of queuing vehicles in the lane when the green light turns on);  

- Maximum saturated flow rate.