With the development of network and communication technology, the continuous advancement of public transportation vehicle technology, and the increasing desire of citizens for the convenience and comfort of public transportation, bus customers of vehicle end users have put forward higher requirements for air-conditioning comfort, maintenance timeliness, and maintenance convenience. Therefore, it is particularly urgent to develop a “cloud” control system with remote monitoring and remote diagnosis. The system monitors the operating status, operating parameters, fault status, and geographic location of each air conditioner; keeps abreast of the operating conditions of the air conditioner, and can actively and targeted maintenance and treatment of the air conditioner that has failed, saving maintenance time to ensure the operation of the vehicle; Air-conditioning energy consumption, interior temperature, mode operation, etc. are remotely controlled to achieve centralized control of energy consumption and interior air. At the same time, using the developed remote wearable diagnostic equipment, for difficult faults that the maintenance personnel cannot judge and handle, the technical support engineers at the headquarters and the remote diagnosis and maintenance guidance of the front maintenance personnel can realize the rapid and accurate handling of the faults.
Based on the current status of air conditioners and the actual needs of bus companies, as well as to improve the product quality of air conditioner manufacturers and provide actual data support for product development, our company has developed an electrical system with “cloud” processing and control functions, which solves the problem Bus maintenance services are fast and proactive, reducing the complaint rate of citizens, and adapting to the development trend of safety, comfort, intelligence, and informatization in the modern automobile industry.
1) Integrate CAN bus technology, 4G communication technology, and computer technology. Each air-conditioning terminal uses CAN module data collection and 4G module as the carrier to send data to the background system. The data sent includes the inside, outside, defrost, and Various temperature data such as condensation; operating data such as the actual operating mode, wind speed, compressor frequency, current, and voltage of the air conditioner; operating data such as the mode set by the driver, the set temperature, the set wind speed, and the switch machine. The cloud control platform collects the data sent by each air-conditioning terminal, and can always grasp the operation status of the vehicle terminal operating outside. Each air-conditioning terminal simultaneously receives remote control instructions sent by the cloud control system. The remote control is used for bus companies to set uniform temperatures, modes, switches, etc., which facilitates intensive management, regulates abnormal operation behavior of drivers, and reduces complaints from citizens.
2) The automatic screening and early warning of the cloud control system through which the collected air-conditioning fault data and abnormal operation data are passed are timely transmitted to the CRM system and the operation management system of the bus company, and the after-sales service personnel in the area where the air-conditioning is located are notified in time through WeChat or SMS Maintenance and repair. For catastrophic failures such as short circuits, intermittent short circuits, and ultra-high system pressure, the background system directly sends shutdown instructions remotely to force the air conditioner to shut down to ensure the safety of vehicles and personnel.
3) Analysis and mining of big data management of the Internet of Vehicles: As the monitoring data of operating air conditioners, it is stored in the company’s data server. Through data interaction with CRM (customer management system) system and PDM (product data management system) system, it is convenient for air conditioning products The quality and applicability of the products are evaluated and analyzed, the quality of after-sales service is formed into a closed-loop management, and the life cycle of parts and components are early-warned and reminded.
4) The remote wearable maintenance equipment is a multifunctional equipment with voice, video, CAN bus communication data detection, waveform detection, current and voltage detection. These data are connected to the company’s cloud control system through the vehicle-mounted data terminal. The background technology Support engineers analyze and judge various detection data obtained by wearable maintenance equipment, and with the help of video and voice, guide maintenance personnel to complete complex and difficult troubleshooting. The remote wearable diagnostic equipment integrating Internet communication, remote diagnostic technology, voice and video, and FPGA waveform processing technology has been pioneered in the passenger car air-conditioning industry, so that every service staff has the level of “experts”, and engineers can stay at home. Can easily solve various after-sales problems.
The cooperation mode of the air-conditioning “cloud” end electrical control system:
1. For public transport users with existing data interaction platforms
① The vehicle information interaction system is responsible for collecting air-conditioning data. The bus data platform has the function of data downloading, and the data service interface is opened according to the interface requirements of the air-conditioning platform.
②The air conditioning cloud control system and data service interface are developed and maintained by SONGZ.
③The real-time and historical data of the entire air conditioner is stored in the bus server, and the real-time data of the air conditioner is sent to the SONGZ server through the external network.
④The cloud control system can set multi-level user permissions for users to meet the needs of user system administrators and subordinate units at the same time.
⑤The system provides a one-key login mechanism so that users can embed the air-conditioning cloud control platform into the bus company’s own information system.
⑥ Through the early warning function of the system, it can be synchronized to customers and SONGZ via SMS, WeChat, and notification.
2. For customers who do not have a data interaction platform:
① The 4G data acquisition module of the air conditioner directly sends the air conditioner information to the SONGZ cloud control platform system.
② The air conditioning 4G data acquisition module is developed and maintained by Songzhi.
③SONGZ configures cloud control client software for users, which can set multi-level user permissions for users to meet the needs of user system administrators and subordinate units at the same time.
④ The system provides a one-key login mechanism so that users can embed the air-conditioning cloud control platform into the bus company’s own information system.
⑤Through the early warning function of the system, customers and SONGZ service personnel can be notified through SMS, WeChat, and SONGZ, so that the fault can be solved in the first time.
Today, when “scientific and technological buses”, “green buses” and “information buses” are promoted, the air-conditioning device with remote monitoring and diagnosis of the “cloud” control system fully meets this requirement. Change passive service to active service, make full use of the entire back-end network and CRM system to participate in information collection and management, so that after-sales service is more timely, efficient and cost-effective. It also makes the bus ride environment more comfortable as the city’s business card, and citizens are more satisfied with public transportation and have fewer complaints. The “cloud” control system with remote monitoring and diagnosis connects bus terminals, bus companies, and production plants through the Internet to form an organic network to share information and resources, and achieve the goals of high efficiency, resource conservation, quality improvement, and interconnection.
Post time: Apr-27-2021