introduction of quartz weighing in motion pre-detection system

 

1.1    Proposal introduction

 

Weighing in motion pre-detection system of which the full name is no parking highway early warning detection and management of out of limit Internet of things system. This internet of things system has three levels, in which physical perception, data processing and data sharing are included. The system is divided into three parts according to its function, the dynamic weighing and speed measuring part, the vehicle license plate recognition part and the PC software part. According to the working spots, high-speed pre-detection monitoring station, sub-center, and provincial center (optional) these three parts are divided.

Detection station is the scene of the perception level of the data collection. When vehicle is running on the highway normally and passing by the dynamic weighing system testing area without stop, the dynamic weighing system can automatically detect the vehicle speed, axle load, the number of shaft, wheelbase, vehicle weight , through time and other information and meanwhile automatically separate vehicles, form a complete vehicle weighing information, upload to the PC software system. When vehicle enters the dynamic weighing region, it has also entered the license plate recognition place, the system will recognize vehicle license plate, and the result could be uploaded to the software system of detection station. Detection station software system matching the uploaded vehicle license plate data with vehicle weighing data, and according to the requirements of overloaded vehicles discriminant standard set up transfinite limit, automatic identifying whether the vehicle is overweight or overspending. If vehicles overrun, according to the user’s

settings, can provide prompt information to external display device. Every car

will form a complete car information, including vehicle speed, axle load, the number of shaft, wheelbase, vehicle weight, license plate, the speed of the car, over time, whether overrun, and upload to the sub-center database, convenient for searching, sharing and analysis car record.

Sub-center as a data server provider, can storage and manage for the large capacity data. Highway preview sub-center management system is a part of the PC software system, through this management software can conduct remote management for multiple testing sites, and can detect high speed site equipment’s running state. Through the function of real-time display, retrieval, analysis, tabulated car record, can provide data interface to the third party system and convenience for data access and extract.

As the most top level of the high-speed preview internet of things system, provincial center collect the provincial data. It can manage multiple sub-centers, simultaneous searching multiple data servers, and to a large number of car data for intelligent analysis. High-speed preview province center management system, belongs to the PC software system too, user can selectively installed according to requirements.

 

1.2    System Function

 

1. Automatic identifying vehicle’s driving direction and meanwhile detecting forward and reverse vehicles；

2.  Dynamic weighing accuracy: 95%, confidence: ≥96%；

3.   Accurate detect high-speed vehicles’ speed and axle load, wheelbase, vehicle model, pass time and other information;

4.   Accurately capture images of high-speed driving vehicle in real-time, and quickly identify the vehicle's license plate number;

5.  Accurately matched license plate number with vehicle information;

6.  Accurate and real-time display user’s set content;

7.   According to the standard that the user set, automatically judge whether

vehicles speeding, overweight, and starts the alarm device;

8.     Have data storage function, can store up to 40000 vehicle information;

9.  Provide lane number, time, license plate, the overweight rate, the number of shaft and other retrieval conditions, convenient user inquiry data;

10.    Provide one car, different number of shaft, specified period of time, overweight rate and other kinds of statistical reports.

11.    Test high speed (speed: 0.5 ~ 105 km/h) vehicle’s axle load, speed, wheelbase, total weight and can separate automatically;

12.  System adaptability is strong, such as terrain slope, corner has been used successfully. In the fog, rain, such bad weather, will not affect the normal operation of system, also does not affect the accuracy of weighing and speed test.

13.  System once completing that can work for unattended type.

14.   Has external display function, according to the user’s set can output information (speeding cars, overweighting cars, trucks, cars, etc., can radio or cross multi-select) to LED board, in addition the user custom display format.

15.  Has data fault-tolerant function, correct matching weight and license plate number, form a complete vehicle information, including the vehicle's license plate, the speed and axle load, the number of shaft, wheelbase, vehicle weight, pass time, whether overweight or speeding, etc.

16.    According to the requirements of speeding and overweight vehicles discriminant standard to set value of speeding and overweight, which users can easily adjust, the system automatically identifying whether vehicles speeding or overweight.

17.   Can automatically transfer data and store the images of the vehicles. Provide the breakpoint uploader functions, namely, when the network is disconnected, car data can be stored for 24 hours; after the network recovery, since the break point automatically upload data.

18.  Realize intelligent analysis, according the condition of time period, where

the car passed to analyzed, and display in the form of a chart.

19.  Provide function of system network connection test, can dynamic rendering system topology structure, real-time test connection status of each node in the network.

20.   Provide user management, data backup and restore data, and other functions for advanced permissions users.

21.      High-speed preview information management software provides management functions for multiple remote testing site, for testing station peripherals with state detection function.

22.     Reserve data distribution function, can provide overrun vehicle data to the third party system, easy to monitor speeding and overweight vehicles.

23.  Reserve standard interface, convenient other manufacturers of high-speed preview data access.

Comments

Post a Comment

Popular posts from this blog

Improved Installation Scheme for Piezoelectric Quartz Weighing Sensors on Asphalt Pavement

Image
  1. Background Technology   Currently, WIM systems based on piezoelectric quartz weighing sensors are widely used in projects such as overload monitoring for bridges and culverts, non-site overload enforcement for highway freight vehicles, and technological overload control. However, to ensure accuracy and service life, such projects require cement concrete pavement reconstruction for the piezoelectric quartz weighing sensor installation area with the current technology level. But in some application environments, such as bridge decks or urban trunk roads with heavy traffic pressure (where the cement curing time is too long, making long-term road closures difficult), such projects are difficult to implement.   The reason piezoelectric quartz weighing sensors cannot be directly installed on flexible pavement is: As shown in Figure 1, when the wheel (especially under heavy load) travels on the flexible pavement, the road surface will have a relatively large subsidence. However, when rea
Read more

Quartz Weighing Sensor Reliability Testing Technology for WIM systems

Image
  Overloading and exceeding limits of highway vehicles cause significant damage to road surfaces and pose a high risk of safety accidents, a particularly serious issue in our country where 70% of road safety incidents are attributed to vehicle overloading and exceeding limits. This results in direct economic losses of nearly 3 billion RMB, with losses from vehicle overloading and exceeding limits on highways exceeding 30 billion RMB annually. Hence, it's critically important to monitor and supervise overloaded vehicles on highways. In order to regulate vehicle overloading without disrupting traffic, the Weighting In Moving (WIM) highway dynamic weighing scheme has emerged. This system utilizes piezoelectric quartz sensors to quickly measure vehicle weight as vehicles pass over the road surface at high speeds (<120km/h) and trigger monitoring cameras for photographing. Enviko quartz sensors are specially designed for low-cost, high-performance piezoelectric quartz sensors for hig
Read more

Key Design of Direct Enforcement Inspection Stations for Road Overload Control

Image
1. Introduction Illegal overloading and overloading of trucks not only destroys highways and bridge facilities, but also easily causes road traffic accidents and endangers the safety of people's lives and property. According to statistics, more than 80% of road traffic accidents caused by trucks are related to oversized and overloaded transportation. The traditional overrun and overloaded transportation checkpoint mode has low law enforcement efficiency, which is easy to cause the phenomenon of overrun vehicle omission, and the direct enforcement detection point control mode relies on the dynamic automatic weighing and detection system to automatically detect, identify and screen the passing vehicles around the clock, so as to achieve accurate and efficient control of overrun and overloaded vehicles. In order to strengthen the governance of overloaded transportation behavior, ensure the safety of highway facilities and people's lives and property, the direct enforcement sys
Read more