In recent years, China's "Blue Sky Defence War" has achieved remarkable results. The raging smog has been contained, and the situation of motor vehicle exhaust pollution nationwide has improved. However, at the 2019 International Symposium on Motor Vehicle Pollution Prevention and Control held recently, experts pointed out that although the total amount of pollutants has dropped, some pollutant emissions are still on the rise. China has a vast territory and shows different pollution characteristics from east, west, south, and north. It is impossible to adopt a method for the treatment of pollutants. It is necessary to take corresponding measures according to different geographical characteristics. Wang Junfang, the person in charge of the Motor Vehicle Pollution Monitoring Center of the Ministry of Ecology and Environment, emphasized that the situation of exhaust gas pollution is changing, and the supervision methods must also change.
■ Smog in the north highlights ozone pollution in the south
Monitoring data shows that in recent years, the amount of nitrogen dioxide emissions has rebounded, there is a risk of exceeding the standard, the ozone index continues to rise, and has exceeded the standard. In addition, judging from the roadside inspections and household sampling surveys, diesel trucks have emissions exceeding the standard rate of 20% to 30%, which shows that China's motor vehicle exhaust pollution is still very serious, and the problems of nitrogen dioxide and ozone pollution are becoming more and more prominent .
As of the end of 2018, the total number of diesel trucks in China was 18.18 million, accounting for 7.9% of the car ownership, but nitrogen oxide emissions accounted for 57.3% of the total, and particulate matter accounted for 78%. Unreasonable transportation structure, high use intensity of diesel trucks, and oil quality problems are the main reasons for this phenomenon. In addition, the "small, scattered, weak, chaotic" phenomenon of freight companies is more serious. They are at the bottom of the supply chain. The logistics industry generally has low prices and homogeneity, resulting in low profit margins. In addition, there are many road transportation charging projects in China, and most car owners often overload their transportation for money. Wang Junfang said: "Overload will inevitably lead to excessive emissions."
The problem of oil quality has been widely criticized by people, and it has attracted the attention of relevant departments. In order to solve this problem, China has implemented the "three oil merger". Judging from the random inspection of gas stations across the country, the quality of the oil has improved and the pass rate is generally high. However, the environmental protection department found during the roadblocking test on the highway that the test results of the oil products drawn from the fuel tank of the truck showed that the pass rate was less than 60%. This shows that in order to save costs, a considerable number of car owners refill low-cost and low-quality oil products from informal channels.
The SCR method can reduce the emissions of diesel vehicles, this method requires the use of urea. However, the sampling results of urea samples sold in 28 cities across the country by relevant departments showed that the compliance rate of samples from 16 different brands was only 31.5%, mainly because the urea concentration and biuret content did not meet the standard. National IV vehicles do not add urea, the nitrogen oxide content is 3 to 4 times higher, National 5 vehicles are 6 to 7 times higher, and Euro VI vehicles are more than 11 times higher.
It is worth noting that in recent years, there has been little national smog in China, but the climatic characteristics of the north and the south are very different. The pollution caused by vehicle exhaust shows the characteristics of the difference between the north and the south: the haze problem in the north is more prominent, and the ozone pollution in the south is more obvious.
■ Pollution control should be adapted to local conditions and time
In order to fight the "Blue Sky Defence Warfare", the Ministry of Ecology and Environment has issued the "Action Plan for Tackling Pollution Control of Diesel Trucks." After coordinated and coordinated by many parties, the four actions have been put together, and China's diesel vehicle pollution control has achieved certain results.
In order to adjust the transportation structure, China will increase the freight volume of railways and waterways, and establish a public, rail, and water intermodal transportation mechanism. In the transportation of bulk goods, the transportation of goods such as coal and ore increased by 30% by 2020. In order to reduce the volume of road freight, some regions and ports are forbidden to allow trucks to transport bulk goods such as coal and ore.
Some new cars emit black smoke soon after they hit the road. Relevant persons from the Ministry of Ecology and Environment said that in the future, actual road emission testing will be used as a means to detect new vehicle emissions. This means that not only will the bench test be passed in the future, but actual road testing will also be conducted. For car companies, not only high production consistency is required, but also certain durability, so as to ensure that the new car can meet the emission requirements after it is converted into a car.
The density of vehicles in different parts of China is very different, and the level of economic development varies greatly. It is no longer appropriate to adopt a “one size fits all” regulatory approach. In the future, whether it is a light vehicle or a heavy vehicle, the relevant departments will consider the series of limit methods. The key monitoring of the fleet of more than 20 vehicles requires the establishment and improvement of vehicle maintenance, fuel usage and vehicle urea addition accounts.
Relevant persons from the Ministry of Ecology and Environment said that only 3,000 people in the country are engaged in environmental protection full-time. In the face of more than 18 million diesel trucks, the average person needs to supervise more than 6,000 vehicles. If it is only a product quality problem, the probability of an OBD (on-board automatic diagnosis system) accident is not very high, and environmental protection staff may be able to cope with it; if deliberately falsified, it will be difficult for environmental protection staff to cope. In order to increase inspection efforts, the environmental protection department will further promote remote sensing detection in order to discover vehicles with excessive emissions in time.
According to the requirements of the "Three-Year Action Plan to Win the Blue Sky Defence Warfare", on the basis of 2015, the average emission of various pollutants nationwide should be reduced by more than 70%. In the future, China's restrictions on emissions from diesel vehicles will only be stricter. Drawing on the experience of European and American countries, China also requires diesel trucks to install OBD systems. The OBD system can not only promptly remind drivers of excessive emissions, or the urea inventory is too low, the uploaded data can also allow relevant departments to keep abreast of the dynamics. OBD monitoring has become an effective means of diesel pollution control.
■ Which OBD diesel truck environmental protection online detection terminal is strong?
On June 28, 2018, the official website of the Ministry of Ecology and Environment released the announcement on the release of the pollutant emission standard "Limits and Measurement Methods for Pollutant Emissions of Heavy-Duty Diesel Vehicles (China Stage 6).
This standard was approved by the Ministry of Ecology and Environment on May 22, 2018. From the date of publication of this standard, type inspection can be carried out in accordance with this standard. As of July 1, 2019, all production, import, national VI diesel vehicle OBD remote online monitoring terminals, diesel vehicle OBD remote monitoring terminals, sales and registration of gas vehicles shall meet the requirements of this standard; since July 11, 2020 From the date, all production, import, national VI diesel vehicle OBD remote online detection terminals, sales and registration of urban vehicles meet the requirements of this standard; from July 1, 2021, all production, import, sales and registration of heavy Diesel vehicles should meet the requirements of this standard.
From the date of implementation of this standard, this standard replaces the "Limited Limits and Measurement Methods for Exhaust Pollutants from Compression Ignition, Gas Fuel Ignition Engines and Vehicles for Vehicles (China Stage III, IV, and V)" (GB17691-2005 ).
Surad Technology has been focusing on the development of CAN bus data and emission products for industrial application-level OBD countries, five countries and six vehicles for 9 years since its establishment. It has gathered more than 100 automotive industry elites in 10 years and is constantly exploring industry applications and needs. It is the first to adopt a car-level, distributed, and modular bottom architecture design. In 2019, it is the first to adopt intelligent automatic adaptation and 5G technology, without the need to crack and adapt protocols of vehicles of different brands, ensuring rapid and efficient completion of project implementation. Several years in advance, DB11-1475 local standards were specified in the vehicle exhaust emission monitoring technology and China Automobile Research Institute, Tsinghua University, Ministry of Environmental Protection, and Metrology Bureau. Win the national blue sky defense battle.
The Diesel Vehicle Intelligent National Sixth Emissions Online Monitoring and Data Acquisition Terminal (H6S) integrates vehicle OBD bus data collection, location information, and 4G / 5G communication technologies to adapt to some domestic country three and all country four or above diesel vehicle brands. Through intelligent automatic adaptation technology, there is no need to analyze and adapt the protocol of vehicles of different brands, and the project implementation can be completed efficiently and conveniently. It meets the government and industry's needs for diesel commercial vehicles in atmospheric environment governance, energy consumption statistics, safety supervision, and timeliness improvement projects.
In order to ensure the victory of the Blue Sky Defence Warfare Action Plan and the completion of the ambient air quality goal: "After three years of hard work, the total amount of major atmospheric pollutants has been significantly reduced, and the greenhouse gas emissions have been reduced in a coordinated manner, and the PM2.5 concentration has been further significantly reduced to significantly reduce heavy pollution The number of days obviously improves the ambient air quality and obviously enhances the people ’s blue sky happiness.
In particular, the problem of excessive emissions of heavy-duty diesel vehicles is outstanding. There are a lot of problems such as not adding car urea, shielding after-treatment devices, and using low-standard diesel. In the diesel vehicle governance action, the focus is on the construction of all-round, three-dimensional, dead-end supervision of the sky, earth, people, and vehicles. Remote sensing monitoring, road inspection, road inspection, and vehicle-mounted remote vehicle OBD monitoring are widely used. Judging from the implementation results, after the vehicle is installed with the remote emission monitoring OBD online monitoring terminal, it can remotely monitor the engine operating conditions, urea usage, and pollutant emissions of diesel vehicles online, saving manpower and time costs.
Establish a complete and comprehensive online inspection network for heavy-duty trucks, strengthen the monitoring of actual road transportation vehicles, and implement technological transformation of high-emission diesel vehicles. Specific measures include: planning and construction of a national heavy-duty truck pollution online monitoring platform to achieve full-coverage and all-weather emission monitoring functions; carrying out refined management of heavy-duty diesel vehicles, establishing a one-vehicle one-file environmental protection electronic file; Remote monitoring is a technical means to strictly monitor the actual emissions of vehicles. Understand the vehicle operation situation, provide technical support for the implementation of emergency measures in the source area of pollution, and provide data support for the treatment of exhaust pollution sources in heavily polluted areas such as Beijing, Tianjin, Hebei, Fenwei Plain, and the Yangtze River Delta.
The online monitoring application of OBD data for H6S heavy trucks and freight logistics trucks in the online detection of environmental emissions is the application of Suretech for heavy trucks, 3.5-ton diesel models, government environmental protection supervision platforms, and car companies implementing the National Sixth Standard and other industries. A carefully crafted 4G network intelligent information TBOX terminal hardware. The TBOX terminal adopts automotive-grade design and integrates J1939 bus protocol data, SM2 encryption, 4G cellular network, GPS + Beidou satellite positioning, six-axis G · SENSOR and FLASH storage. It is connected to the automotive ECU electronic control unit through OBD or CANBUS bus. The automobile engine control computer center collects environmental emission data. Real-time acquisition of engine data, nitrogen oxide data, DPF and diesel engine system data of diesel trucks, logistics vehicles, 3.5-ton freight logistics transport vehicles, GPS position tracking and operation status monitoring, and at the same time collecting engine pressure rails according to the J1939 protocol , Intake pressure, fault code, etc., through the DB11-1475 or GB17691 transmission protocol, the data is directly uploaded to the specified server through the specified IP address and domain name, and the external serial port and I / O port are reserved to efficiently assist the heavy-duty diesel vehicle Enterprises such as remote emission detection system platform, freight logistics management system, fleet remote management monitoring, truck financial platform, etc., are more complete, smarter, and more quickly realize vehicle monitoring management and services.
■ What is the strength of the OBD diesel truck environmental protection online testing terminal H6S ?
1. Product features:
Adopt the car regulation Freescale (NXP) S32K144 based on the 32-bit ARM Cortex-M4F core main control chip;
The product complies with AEC-Q100 specification;
Integrated CSEc hardware safety, ASIL-B ISO26262 functional safety;
Temperature range up to -40 ° C to 125 ° C;
The satellite positioning adopts Zhongke Micro GPS + Beidou module to achieve a hot start of 1 second, a cold start of 28 seconds, and an open environment positioning accuracy of 2.5M;
Built-in large-capacity storage chip to support data storage in offline state;
Multi-channel CAN design, compatible with J1939, SAE 14229 and other bus protocols;
CAN达到Fully ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant；
Six-axis model G * SENSOR, can collect all attitudes;
Power management uses TI's most advanced technology, power consumption can be controlled within 3mA / h;
National standard API interface instructions, server analysis is more intelligent and convenient;
Support custom upload real-time data interval;
Other sensors can be expanded;
Support online and remote upgrade, support online and remote configuration of product parameters and configuration of IP address or domain name;
2. Support J1939 freight logistics truck vehicle terminal to collect data samples including:
Vehicle speed, atmospheric pressure, engine maximum reference torque, engine net output torque, friction torque, engine speed, engine fuel flow, NOx sensor output, SCR inlet temperature, DPF pressure difference, air flow MAF, urea level, reactant balance, Fuel tank level, engine coolant temperature, latitude and longitude, etc.
3 Product application
Heavy truck • Online monitoring system for environmental protection emissions
Diesel bus • Nitrogen oxide data collection
Heavy-duty logistics vehicles • Emissions monitoring
Other data transmission • Freight, bus, passenger, J1939 data collection
4. Features
1. Meet the current "Beijing Five" data reporting requirements, the specific standard is "DB11 (1475) heavy vehicle exhaust pollutant emission limits and measurement methods";
2. Meet the data reporting requirements of "Hangwu";
3. Meet the data reporting requirements of "National VI";
4. To meet the "Shanghai Standard" data reporting requirements.
5. Design standards
1. The product technology complies with the relevant provisions of the "radio disturbance limits and measurement methods of information technology equipment";
2. The in-vehicle hardware equipment is compact, easy to assemble, and has strong anti-jamming, anti-jumping, and anti-beating capabilities;
3. High temperature / low temperature resistance: The on-board hardware can work stably under the environment of -45 ℃ to 85 ℃ (cockpit);
4. Data storage: Built-in large-capacity storage chip in the vehicle hardware, support offline data storage;
5. Anti-disassembly: The on-board hardware installation has been professionally designed to ensure that ordinary personnel cannot disassemble at will;
6. Communication: The on-board hardware adopts TCP communication method to ensure the accuracy of real-time reception, processing and output of information, and provides supporting SIM card (M2 card);
7. Support online and remote upgrade, support online and remote configuration of product parameters;
8. Circuit design: The vehicle hardware is equipped with an external charging circuit, and the power failure alarm is uploaded after the power is cut off. The built-in backup battery is supported. After the power failure, the device can work continuously for more than 5 minutes;
9. With power saving measures, the refresh interval in normal mode is short when moving, and the refresh interval is long in power saving mode when parking;
10. Meet the national standard GB-T32960.X-2016- electric vehicle remote service and management system technical specifications.
■ How to play the OBD diesel truck environmental protection online detection terminal?
H6S is currently divided into three cooperation models:
1. OPEN BOM: Party A's production, Su Ruide provides solutions, and charges R & D deposits ranging. Lisence fees can be reported as a ladder price of 25 ~ 30 yuan per item.
2. PCBA board: Unit price 299 yuan / Taiwan MOQ: 500 pcs with one year warranty, battery, antenna, housing, OBD harness and other customers purchase and assemble by themselves
3. Finished machine: unit price 399 yuan / unit including tax one year warranty MOQ: 500 units to provide all accessories.
