1 Introduction
The traffic accidents frequently caused by Xi'an's slag trucks make people feel sad. In less than a year, more than 50 people have been buried under the wheel of slag. While investigating responsibility for accidents, should we use a rational mind to examine the status of domestic slag management?
Hangzhou Hongquan Digital Equipment Co., Ltd. has been engaged in the long-distance vehicle management industry for many years and once implemented a remote management program for passenger cars and vehicles for Suzhou Jinlong Company, which is a sensational G-BOS system in the passenger transportation industry. Since July 2010, the system has become a standard product of some models of Suzhou Golden Dragon. It has now been used in more than 2,000 domestic passenger transport companies and manages more than 60,000 vehicles. Our company was also awarded the best strategic partner of Jinlong Bus Company.
Based on its understanding of vehicle management and system development technology, the company was approved by Shaanxi Auto Heavy Duty Trucks in March 2011. It replicated some successful management experience in the passenger transport industry to the freight industry and implemented an intelligent operational management system for freight vehicles.
The slag truck remote management system is a system developed by Hangzhou Hongquan Digital Equipment Co., Ltd. that is specifically designed to realize the operation and management of the slag trucks. The system is used to implement driver behavior management, vehicle loading management, and vehicle parts working status management. As a means to ensure the normal operation of the dirt vehicle. Some of the system's functional points are as follows:
Ø Muck speeding alarm
Ø Dump truck overload and leak detection
Ø Vehicle identification (deck, fake vehicle inspection)
Ø Inspection of working condition of vehicle parts (brake, clutch, throttle working status check)
Ø Reversing radar
Ø Voice registration
Ø TPMS tire pressure detection
Ø Weather condition detection
Ø Bad driving records (xenon lights, retrograde, not exercising according to regulations, etc.)
Ø Operation route monitoring
Ø 3G video transmission
Ø "Man, Vehicle, Road" accident site restoration
The slag truck remote management system realizes the real-time control of people and vehicles by monitoring driver behavior and vehicle status. Through the use of this system, business administrators can understand driver driving habits, vehicle loading conditions, vehicle parts working conditions, etc., to reduce the incidence of accidents and truly guarantee the safety of people and vehicles.
In August 2011, the company’s related products successfully passed national road GPS vehicle terminal standards.
2 Management Concept
The management of muck trucks is based on the three-pronged approach of “peopleâ€, “car†and “goods†to ensure the safety of people and vehicles.
People: The system considers drivers' driving habits, vehicle safety hazards, vehicle fuel consumption, and vehicle service life to be closely related. A driver with very poor driving habits, such as frequent speeding, rapid acceleration, sudden deceleration, sudden braking, and even violation of traffic rules (such as retrograde, xenon, etc.), accumulates over time, and damages the vehicle in varying degrees. There are also high security risks and relatively high fuel consumption. In other words, if there is a traffic accident, it may be that these drivers have poor driving habits.
For driver behavior management, the system can achieve:
Ø Speeding alarm
Ø Did not play turn signal turn record
Ø Bad driving behavior records (acceleration, sudden deceleration, sudden braking, etc.)
Ø Fatigue driving management
Ø Stealing oil alarm
Vehicle: The working conditions of various parts of the vehicle are related to the safety and security of human vehicles, especially brakes, clutches, tire pressure, brake pads, throttles, etc. System vehicle terminal through acquisition:
Ø brake, clutch, throttle, left and right turn signals, air conditioning, brake pads, wear alarms, etc.
Ø Support TPMS tire pressure monitoring device, real-time detection and warning of tire pressure
Ø Support the high temperature alarm of the brake pads by using the infrared temperature sensor
Ø As the core component of the vehicle - the engine, the system supports the interface of CAN with the engine of the country above the third to realize the timely analysis of the internal fault of the engine; through the analysis of the vehicle voltage and the instantaneous fuel injection amount of the engine, the electric loss and the oil loss phenomenon can be discovered in time to prevent The emergence of breakdowns and other faults.
Ø In addition, before each vehicle is opened, the system vehicle terminal will perform a vehicle inspection on the working status of the vehicle components and the status of the engine, and carry out a breakdown of the vehicle safety status and the reason for demerit points (for details, see 3.3.7).
Goods: In order to prevent overloading and illegal driving caused by overload, the vehicle terminal is equipped with multi-cameras to monitor the body loading on-line (the system supports 8 camera outputs and 4 tracks at the same time). The system can achieve the following functions:
Ø Muck spill monitoring
Ø Scrap vehicle overload alarm
Ø Muck light, retrograde monitoring
Ø Weather condition detection
Ø Reversing radar
Vehicle terminal with a 3G transmission module, the administrator can view the loading status of the corresponding vehicle through the management platform in real time, through the camera installed on the roof can see whether the vehicle has overloaded and spilled; installed in front of the camera can trigger conditions (such as Traffic lights, one-way roads, etc.) Realize the vehicle's moving image transmission; The rear camera can be used to implement reversing radar.
Weather road condition detection, the system background through the docking with the weather platform, the next three days of weather information, humidity information, temperature information is pushed to the vehicle terminal display to prompt the driver the corresponding location of the meteorological situation.
3 Product introduction
3.1 overall system introduction
System topology
As shown in the above figure, the entire system solution collects vehicle operating data from the on-board terminal, transmits the data to the cloud network through the GPRS or 3G network for cloud computing storage processing, and the mining control gateway performs distributed storage in the form of a file server. Cloud network's summary service module aggregates data according to the system's mathematical model and saves it to the database. The background management system supports reports or displays pie charts, bar charts, and other methods to show the real-time operating conditions of the vehicle. It also supports the platform to issue some counter-commands (such as locked cars), scheduling commands (terminals support voice messages to read SMS), and some Easy faults can be remotely excluded.
3.2 product performance map and installation related
The vehicle terminal of the residue truck management system integrates functions such as reversing monitor, radio, video recording, satellite positioning driving recorder (Ministry of Communications standard), and navigation. The equipment consists of a single host (the storage medium can be an SD card or an external hard disk).
â— Product effect chart:
vehicle terminal
3.3 Introduction to Terminal Functions
3.3.1 Front Monitor (Reverse Monitor)
The terminal device supports 8-way camera output. The default is 4-way camera output, which are reversing (or front), middle door (or outside), front door (or driver), and inside (other). The video output interface is as shown below:
Video camera
3.3.2 Speeding alarm
The vehicle terminal supports the real-time detection of the vehicle speed. If the vehicle is speeding, the system will voice promptly that the vehicle has been over-speed and records the speed information (time, location, driver identity information).
3.3.3 Overload leakage detection
Administrators can use 3G video transmission, real-time photographing, and time-lapse photography to achieve vehicle delivery at the time, including whether the vehicle is overloaded or spilled.
3.3.4 Reversing radar
The vehicle terminal supports reversing radar. When the driver switches to reverse, the terminal device displays the reversing radar image, as shown below:
Reversing radar
3.3.5 Driving Self Test
As the on-board terminals of the vehicle are connected to the various switches of the vehicle (brake, throttle, clutch, left and right steering lights, etc.) and the engine, the on-board terminal supports “car inspection†of all parts and components (engines) of the vehicle to form a score report. , to remind the driver of the current working status of the vehicle.
3.3.6 TPMS tire pressure detection
The slag truck remote management system achieves tire pressure management through testing with the TPMS tire pressure system. When the tire pressure of the vehicle is abnormal, the on-board terminal will give an alarm and send the information to the management platform, and it can be sent to the administrator's mobile phone in the form of a short message.
3.3.7 Vehicle Inspection
The on-board terminal device detects the status of the vehicle by detecting the working status of the vehicle components and the CAN information of the ECU, and performs scoring.
Vehicle examination
3.3.8 Vehicle Dispatch
The slag vehicle remote management system supports sending messages to the vehicle through the back-end management platform software. The device on the vehicle can receive a message, and a message dialog box pops up for voice reading. You can click this message to see the message content. The message interface is shown in the figure below:
Vehicle scheduling
3.3.9 Vehicle Navigation
Landfill vehicle terminal products have navigation software. When the driver goes out, he can perform full map navigation and analog navigation. Destination input supports handwriting query, first spell query, crossroad query, peripheral query, history query, common address book and other functions.
Car navigation
3.3.10 Online Weather Forecast
The weather forecast mainly describes the weather conditions of the city where it is located, including the weather conditions of today, tomorrow and the day after tomorrow, the wind, temperature and road conditions in the real-time location.
Weather forecast
3.3.11 Fatigue Drive Management
The on-board terminal supports the identification of the driver via the USB key identifier. When the vehicle driver drives the vehicle for a predetermined number of hours, the system terminal voice alarm prompts “Do not fatigue driving†and sends the fatigue driving information to the driver at the same time. Management platform.
3.3.12 Vehicle Identification
The slag remote management system supports the installation of an identity reader (non-contact reader) on each vehicle. Each vehicle enters and exits the site railing and will identify the vehicle to prevent decks and fake vehicles from impersonating. Into the construction site.
3.4 Platform Features
3.4.1 Non-standard driving records such as xenon lamps and retrograde lamps
The slag truck remote management system platform supports matching vehicle GPS position direction, traffic lights, and driving routes, and analyzes whether the current location of the vehicle is a reasonable speed and direction; and when combined with video information, it can realize real-time traffic information when the vehicle passes traffic lights.
Non-standard driving records
3.4.2 Operation Route Monitoring
The slag truck remote management system can monitor whether the line running the vehicle matches the specified line and dump the muck in the designated position. It is also possible to limit the speed of the demarcation section according to specific road conditions. For an intersection on the line, trigger conditions can be set for photographing forensics or video transmission.
Operational Route Management
3.4.3 3G video transmission
The slag car remote management system can be connected to the video monitoring system, and can record the road conditions in front of the vehicle in real time. The road conditions on both sides of the vehicle can be monitored at any time via the 3G communication network. Once the vehicle accident occurs, the slag car can be adjusted. Take video information to provide first-hand video evidence for the responsibility of the accident.
3.4.4 Monitoring of Bad Driving Behavior Based on GPS Routes
The slag truck remote management system must have a complete GPS function, and can realize real-time monitoring, historical trajectory playback and other standard GPS functions, and can inquire at any time what position the vehicle is at any moment, and at the time of the vehicle operating speed and other information.
Bad driving behavior monitoring
3.4.5 accident scene restoration
The slag truck remote management system is equipped with accident reduction methods based on “peopleâ€, “vehicleâ€, and “road†to restore vehicle condition information for a period of time before and after the accident. For example, through the vehicle terminal to collect data, the management platform can record the vehicle running speed, driver braking measures (brake, throttle, clutch, etc.), steering action and other artificial control; for the vehicle, you can record whether the current vehicle engine is working properly, The conditions of tire pressure, brake pads, and other corresponding parts and components; for road conditions (see 3.3.10), the management platform can be restored to the road surface conditions and weather conditions of the day. Real site information is presented in a variety of graphical reports.
3.4.6 Cycling Operation Report
The platform supports statistics on driving information for bicycles for a period of time and is presented in statistical reports. The report includes vehicle mileage, bad driver's driving information and vehicle component working conditions during the corresponding time period, as shown below:
Cycling report
4 Product Case Introduction
On April 25, 2011, Longyi Group had a collision with a truck from the Liuyang-Shenzhen long-distance train line on the Beijing-Hong Kong-Macao high-speed road, causing minor traffic accidents. After the accident, the driver stated that he correctly judged the driving conditions and road conditions, he did not overspeed, and in the event of an accident, emergency braking was carried out and reasonable measures were taken to avoid the risk of the accident.
Observe the speed curve at the time as shown below:
As the driver said, the accident was divided into two phases. At first glance, this was indeed the case:
Within 47 seconds from 1,22:58:50 to 22:59:37, the speed is 40km/h→104km/h, and the vehicle is accelerating overtaking
2. 22:59:37, an emergency in front of the car, followed by continuous emergency braking
But is the truth really like the driver?
Longjing Group obtained data by carefully examining the operating system of the management platform and found that the vehicle began to accelerate at 22:58:50. Within 47 seconds, the vehicle speed rose linearly from 40 km/h to 104 km/h. At 22:59:37, an emergency occurred in front of the vehicle and the vehicle began an emergency brake. At 22:59:40, the speed was reduced from 104 to 58 and within 3 seconds to 59. In 43 seconds, the vehicle completely stopped. At this time, the vehicle had collided. The Longyan Group management personnel found the key to the accident in these data: in 58 minutes 47 seconds and 59 minutes 23 seconds, the driver stepped on the clutch twice, and the high-speed driving encountered an emergency, you should first step on the brake, emergency brake. In this accident, the driver’s emergency brake lags behind and there is misjudgment, which is the main responsibility.
Therefore, the entire accident should be divided into the following four stages:
1, the first phase, within 32 seconds of 22:58:50-22:59:22, the speed 40KM/H→85KM/H, the vehicle is accelerating overtaking
2. In the second phase, 22:59:22 and 22:59:24, the driver stepped on the clutch (inferred that there was an emergency in front of him) hesitated
3. The third phase, from 22:59:24 to 22:59:37, begins rapid acceleration and the speed increases to 104 KM/H in 14 seconds.
4, the fourth stage, 22:59:37 emergency brake pedal, then the front passenger door has been knocked open, preliminary judgment at this time the vehicle has collided
From the above analysis, it can be basically seen that the driver's emergency brake lags behind in this accident and there is a misjudgment.
The company's remote management products restored the facts. The driver realized the importance of standard driving. The manager improved the professional skills through the process of restoring the facts. The rational analysis provided the authority of the manager and the maintenance safety of the Dragon Group. Management achieved a leap forward.