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In recent years, domestic heavy-duty trucks have developed toward the direction of comfort, gentrification and humanity, and electrical equipment has played a major role. According to statistics, 80% of automobile breakdowns come from the automotive electrical system, and the complex wiring harness makes it difficult to achieve the goal of lightweighting the vehicle. Therefore, heavy-duty electrical appliances have become a trend in networking and intelligence, and they are the main high-end of Hualing Heavy Trucks. The product Valin Star Kema has made new improvements in electrical appliances since 2011.
Hualing Star Kama vehicle using CAN bus control system
The CAN control LAN, originally developed by Bosch Bosch in Germany in 1983 for automotive applications, is a kind of serial communication network that can effectively support distributed control and real-time control and belongs to the category of fieldbus. It is not only a serial data communication protocol, but also has a multi-master working mode, which allows data to be sent and received flexibly. The communication node can be arbitrarily dismantled for easy expansion. The communication medium is twisted-pair, economical and simple to install, and easy to maintain. It is especially suitable for cars. Computer control system and harsh environment, strong electromagnetic radiation and high vibration industrial environment. Among the numerous existing vehicle network technology standards, CAN bus has been widely considered in the field of industrial control and automotive electronics because of its high performance, high reliability, and well-designed and cost-effective design. It has been recognized as the most promising. One of the fieldbuses, the CAN bus using SAEJ1939 role communication standard is currently one of the most widely used in-vehicle network technologies in the world. In order to manage the entire electrical system and realize data sharing and mutual cooperation, it is an inevitable trend to use the CAN bus for data transfer. The CAN bus technology has unparalleled advantages for the optimization of the overall performance of the heavy truck and the control of the entire vehicle. It is the basis for the electrical control of heavy-duty trucks to switch from an electromechanical control system to a networked, intelligent control system. In order to improve the brand image and technical content of Hualing Heavy Truck, it is very necessary for the vehicle to use the CAN bus control system. 
The innovative point of using the CAN bus control system in the Hualing Xing Kaima vehicle is that: This system is an embedded system. No software is required to be installed. After the system is powered on, it can be started. Through the LCD panel on the instrument panel and buttons to set the device parameters, time, display icons, fault information, etc. to achieve human-computer interaction, mainly connected to the six control modules: 1 digital instrumentation module, 2 cab control module, 2 Frame control module, a window control module. Among them, the instrument module is the driver's instrument panel, which collects the status of the vehicle's switches, performs CAN communication with other control modules, and displays various information such as vehicle status, fault information, and alarm information through LED lights, LCD screens, and dial pointers. The engine parameters, time, date setting function can be realized by pressing the key.
The universal controller module has five functions: Collecting various information such as switch status, water temperature, fuel quantity, vehicle speed, and rotation speed of the automobile, and informing the instrument module of the information through the CAN bus, so that the instrument module displays, controls the motor rotation, and the solenoid valve. Turn on/off, turn on/off the body part lamp, etc.; detect the short circuit and open circuit status of the output port and inform the meter module through the CAN bus so that the meter module displays fault information and prompts the driver to notice; and the meter module is found to be offline and close itself The output port ensures safety; when the vehicle is not running, it enters a sleep state, reducing power consumption. The window control module mainly has 3 functions: realize the control of the door lock, window lift, etc. related to the operation of the vehicle door and window; detect the short circuit and open state of the output port, and inform the instrument module through the bus, so that the instrument module displays the fault information Prompts the driver to pay attention; when the vehicle is not running, he enters a sleep state and reduces power consumption.
Hualing Heavy Duty Truck based on the CAN bus environment developed under the Xingkai Ma vehicle CAN bus electrical control system, greatly reducing the length and quality of the vehicle wiring harness, a first step for the vehicle's lightweight goal; improve the safety of heavy trucks, CAN The bus system communicates with the engine ECU and other control systems in real-time, and the bus system displays faults on the display on the meter module in time to facilitate detection and detection. The control module performs centralized control based on the distribution characteristics of the vehicle's electrical appliances, and controls the operating components. Separate control with power equipment reduces the number of faulty nodes and improves the stability and reliability of the system. The characteristics of the CAN bus determine the internal communication speed of the system and the information is accurate. It adopts uniform standards and specifications to enable the devices to communicate with each other. It has good interoperability, interchangeability and expansibility; field wiring and installation is simple, easy to maintain, and economical.
The application of wireless network technology Telematics in Xingkai
Usually referred to as Telematics refers to the application of wireless communication technology on-board computer systems, with the application of computers and network technology to the car, is forming a new computer market called Telematics. Telematics is a comprehensive product of wireless communication technology, satellite navigation system, network communication technology and on-board computer. It is considered to be the star of future automotive technology. When a car is in trouble, it connects to the service center through wireless communication to diagnose the remote vehicle. A computer built into the engine records the state of the main components of the car and provides maintenance personnel with accurate fault location and causes. Through the terminal receiving information and viewing traffic maps, road conditions, traffic information, security and security services, and entertainment information services, you can also play electronic games, web applications (including finance, news, E-mail, etc.) in the co-cab. Through the services provided by Telematics, users can not only understand the status of traffic information, parking spaces near the parking lot, confirm the current location, but also integrate Internet, VPN, and logistics information and social network information through the wireless network. The on-board computer system that combines all the above functions is called Telematics.
Based on the application of the infinite network Telematics system in Xingkai, it roughly includes two aspects: 1. Development of vehicle terminal: The new vehicle terminal adds 3G communication module and CAN bus module to receive the GPS navigation system configured by original star Kama. , hardware and software all need to be redesigned; 2. rely on 3G, GPRS and GSM communications and "INKANET" and other back-end software platform systems, through Unicom and other mobile communications and network operators to establish networked car information, services, management Structure, realize the full range of users' requirements (such as logistics, driving planning, real-time road conditions, illegal prompts, catering, entertainment, etc.), realize the informationization of heavy-duty truck manufacturers (such as engine fuel consumption and related information records, vehicle failure information Records, etc.) Services.
With the continuous expansion of the coverage of the Internet and the Internet of Things, intelligent network traffic systems will surely have broader application areas. They can promote the marketing capabilities, service capabilities, product content, and brand loyalty of Valin Automotive. effect. 
Application of TPMS System in Xingkai
TPMS is known as one of the most promising products of China Automotive Electronics, referred to as the tire pressure monitoring system. This system is a wireless tire pressure monitoring system that is used to detect tire pressure values ​​in real time and gives low pressure alarms. TPMS installs high-sensitivity sensors on each tire to monitor tire pressure, temperature, and other data in real-time while traveling or stationary. It transmits data to the receiver wirelessly and displays various data changes or buzzing on the monitor. The driver is reminded and an alarm is issued when the tire leaks and the pressure change exceeds the set value to ensure the safety of the vehicle.
The use of the TPMS system at Xingkai immediately has four main advantages: First, it ensures the safety during the journey. During the high-speed driving of a car, tire failure is the most worrying and most difficult to prevent for all drivers, and it is also an important reason for sudden and vicious traffic accidents; according to statistics, there are 70% of traffic accidents on Chinese highways. It is caused by a flat tire; maintaining the standard tire pressure and timely detection of tire leakage is the key to preventing flat tires; existing vehicle safety measures, such as ABS, EDS, EPS, and airbags, are passive security afterwards. Tyre pressure monitoring system is pre-active security, that is, timely warning when the tire is in danger, take measures to eliminate the accident in the bud.
The second is to improve the convenience of users. Most users do not perform the necessary tire pressure check every day, but the tire pressure cannot be correctly judged by simply observing or kicking the tire. It is necessary to constantly check the air pressure during long-distance and high-speed driving.
The third is to improve the life of tires. Non-standard pressure driving will shorten the life of the tire. Experiments show that the tire pressure will be reduced by 10% from the normal value, and the tire life will be reduced by 15%; the tire pressure will be lower than the standard pressure value by 30%, and the fuel consumption will increase by 10%. If the tire pressure is too high, the grip will drop and the fuel consumption will increase; the car will run under high tire pressure and will cause great damage to the engine chassis and suspension system; if the tire pressure is not uniform, It will cause brake deviation, thereby increasing the wear of the suspension system.
Fourth, the installation of the TPMS system can reduce traffic accidents, protect the safety of people's lives and property; reduce fuel consumption and benefit the environment; meet the safety needs of road traffic; and strengthen people's awareness of tire safety.
Valin Star Kema Motors uses many of the latest technologies in automotive electronics, and this advancement will certainly contribute to improving the quality and branding of Valin Heavy Trucks.