Dimethyl carbonate (DMC) is a versatile, non-toxic, biodegradable reagent with tunable chemical reactivity. It serves as a green alternative to dimethyl sulfate or methyl halides and phosgene for methylation and carboxylation reactions. DMC can be prepared by the base-catalyzed reaction between carbon dioxide and methanol.DMC can replace phosgene as a safe reaction reagent for the synthesis of carbonic acid derivatives and work as organic intermediates, pharmaceutical products, pesticide productsCould also be used in coating industry.DMC is a safe and green cleaning solvent.Dimethyl carbonate (DMC) is a versatile, non-toxic, biodegradable reagent with tunable chemical reactivity. It serves as a green alternative to dimethyl sulfate or methyl halides and phosgene for methylation and carboxylation reactions. DMC can be prepared by the base-catalyzed reaction between carbon dioxide and methanol.DMC can replace phosgene as a safe reaction reagent for the synthesis of carbonic acid derivatives and work as organic intermediates, pharmaceutical products, pesticide productsCould also be used in coating industry.DMC is a safe and green cleaning solvent.
Dimethyl Carbonate,Dmc Dimethyl Carbonate,Dimethyl Carbonate 99.5,Dmc Industry Grade SHANDONG S-SAILING CHEMICAL CO,LTD , https://www.sdqh-chem.com
The smart transportation system is widely used in all major financially wealthy countries around the world. China has introduced the intelligent transportation system since the beginning of the 1990s. It has experienced the development of the system framework as a whole, and has provided support for demonstration cities. The growth process. Under the guidance and advancement of innovative science and technology, the research, development, and utilization of intelligent transportation technology in China have achieved remarkable results. In the aspects of urban traffic management, highway monitoring, electronic toll collection, public service, and support for resolutions and plans, we have begun to exert more and more major influence. It has played an outstanding supporting role in alleviating traffic congestion, cutting traffic and improving traffic conditions.
The growth of emerging technologies such as the Internet of Things, mobile Internet and big data has brought great opportunities for the growth of intelligent transportation technology. The growth of intelligent transportation is entering a new era. Reliance on national conditions, application of new techniques, integration with smart city support, promotion of intelligent traffic awareness, enhanced use of traffic data, and construction of an integrated transportation service system for the public have become the main objectives of the growth of intelligent transportation in China.
In recent years, the Internet of Things (RFID) technology has gained more and more use in its daily life because of its proactive, accurate, and rapid identification. The automotive electronic identification technology is the actual use of the Internet of Things RFID technology in the transport category, through the provision of vehicle information identification carriers, active, non-contact, continuous vehicle network to complete the vehicle identification and monitoring, breaking the original traffic information collection skills The bottleneck realizes the accurate collection of vehicle information, dynamic acquisition, and massive collection, and changes the traditional way of traffic management, which will bring about drastic changes to traffic management.
1. Car electronic identification to achieve accurate identification of the vehicle identity to identify the identity of the vehicle to rely on video equipment to identify the vehicle trademark information method, the traditional video recognition techniques can get straight and indecent images, but there are certain problems. Video recognition accuracy is affected by the situation (such as rainy days, snow days, and low visibility). At the same time, the video recognition technique cannot distinguish the authenticity of the vehicle and cannot accurately know the true identity of the vehicle.
The automotive electronic identification is an electronic information identification carrier embedded with UHF wireless radio frequency chips and stores car identity data. It has high security, high accuracy, and dynamic identification characteristics. The vehicle identity authentication achieved through this technique is correct and correct. Reliable, you can assist the traffic control section to identify the vehicle's identity.
2. The promotion of auto electronic identification The degree of refinement of traffic management The traditional intelligent transportation (ITS) is mainly based on the sense of network and video recognition skills. It can monitor the traffic flow through the counting of vehicles. The collection of wrists is simple, the coverage is narrow, and the timeliness is poor.
As the carrier of vehicle information, the vehicle electronic identification system can automatically read the vehicle's attribute information, status information, and status information of the passing vehicle in all weather conditions by setting the road collection base station on the way. It can realize traffic flow, traffic flow, and vehicle distribution at traffic intersections. Accurate traffic information collection such as vehicle speed and flow direction and vehicle OD path statistics to realize traffic network status monitoring, vehicle statistics in transit, section flow rate guessing, abnormal business alarms, etc., thereby transforming traditional traffic information collection methods to achieve refined Traffic management, support for pre-blocking traffic jams, comprehensive analysis of supply data support.
3. Auto electronic identification enhances the sharing of traffic information Because China has a large number of areas involving traffic management, limited interoperability among various parts, the fostering of the intelligent transportation system, the lack of interoperability between systems, and the rapidity of information, leading to significant data sharing barriers. Serious information islands.
One prominent feature of the automotive electronic identity is the integration of information from the ground floor, that is, all vehicle-related information, including the vehicle's basic file static information (car brand, number plate type, mobilization number, frame number, body Information such as color information, dynamic information (annual inspections, tax payment information, and vehicle authorization information, etc.) are written into automotive electronic identification chips, and a data platform formed by collecting automotive electronic identification information is integrated. All the vehicle-related data, thus achieving the sharing and integration of traffic information, and providing data for the treatment and utilization of various vehicles involved.
4. The use of automotive electronic identification to enable the use of traffic data The vehicle electronic identification is one of the main imports of the vehicle networking. The traffic data obtained through the vehicle electronic identification will be the inspection and control of illegal vehicles, the monitoring of route operation index, and the traffic number. Time allocation, traffic enticement announcement, traffic approval resolution plan, police force adjustment, road network plan, and traffic information service supply main technical support, and at the same time, based on the car’s e-identification, a spending platform centered on “car special accounts†will be established. The growth of the financial industry will increase with the involvement of vehicles, which will open up a new chapter in data traffic operations and vehicle involvement.
Following the gradual establishment of national standards for automotive electronic signage, Wuxi and Shenzhen Automotive Electronics Marking Projects were piloted, and the popularization and promotion of automotive electronic signs has entered a countdown. The electronic identification of automobiles has fundamentally changed the traditional approach to traffic control and has truly achieved digital and intelligent traffic management. It can be foreseen that automotive electronic identification will lead the changes in the intelligent transportation industry, promote integrated traffic management system upgrades, and promote the growth of intelligent transportation to the "new generation of intelligent transportation", with infinitely long growth prospects.
As the urbanization process continues to accelerate, the size of the city’s population has increased, and the number of flexible vehicles has increased rapidly. This has exerted tremendous pressure on urban transport. How to enhance urban traffic management, enhance traffic regulation, regulate traffic operations, and ensure traffic safety have become a reality The problem that the network authorities need to solve urgently. In order to solve the urban traffic problems, in addition to strengthening the support of basic measures and providing better transportation and transportation, we must make full use of modern information technology to improve the effectiveness of the transportation system, reduce energy consumption, and at the same time improve convenience and safety. The Intelligent Transportation System (ITS) is undoubtedly the main component and support.