Remote online monitoring system
Sinocat company independently developed on-line monitoring system for vehicle exhaust aftertreatment device, which includes two parts: remote on-line monitoring platform and monitoring terminal. The overall structure and functions of the online monitoring system are as follows:
The monitoring terminal developed by SINOCAT Environmental Protection Company is a terminal equipment for real-time measurement and monitoring of vehicle exhaust emissions during vehicle driving. The monitoring terminal equipment has the function of fault alarm and remote online monitoring alarm. It is installed in the driver's easy-to-see position in the cab, and has a clear indication sign. The sign has the information of product maintenance requirements, the processing method of fault alarm information and the contact mode of after-sale service
(see the information of the sign: after-sale instructions). The company's monitoring terminal equipment is shown in the following figure:
The monitoring terminal developed by the company can send data to two monitoring platforms at the same time to meet the respective needs of relevant government departments and post-processing product providers. The monitoring terminal can be used not only for commercial vehicles, but also for passenger vehicle exhaust emission monitoring and data acquisition and processing. The data collected and transmitted are as follows.
Upload engine information parameters, including speed, torque, speed, instantaneous fuel consumption, throttle opening, intake flow, gear, engine temperature and so on.
Upload the relevant data of exhaust aftertreatment product system, including intake manifold temperature/pressure, temperature and pressure of aftertreatment system, carbon load, differential pressure, fuel injection, urea level, working status of urea pump, nitrogen and oxygen concentration, etc. It also has the functions of vehicle management, system management, report statistics and so on.
Upload other information such as product manufacturer, installation enterprise, vehicle owner, vehicle license plate, etc.
Record the information processed by the competent government departments and regulatory agencies, such as vehicle exhaust detection data and penalty information for vehicles discharged in violation of regulations.
OBD information includes at least the following information: MIL alarm, diagnostic support, diagnostic readiness, fault code, VIN, software calibration identification number, calibration verification code, IUPR.
It can read engine data flow from CAN communication interface: speed, torque, fuel injection, NOx emission data, intake, exhaust temperature, DPF pressure difference, urea level, cooling water temperature, longitude and latitude, etc.
Data acquisition and transmission frequency is 1Hz.
Introduction to Indicators and Displays
The monitoring terminal is installed in the cab with two light indicators, yellow and red, respectively. The LCD screen can display four temperatures, one differential pressure and two nitrogen and oxygen concentrations, as well as a fault code. According to the operation status of the system, the monitoring terminal can realize the functions of regeneration and fault clearance.
Fault Types of Self-contained Products
The company uploads the fault types of products to the remote online monitoring platform through monitoring terminal equipment. Maintenance plants or customers can read the related fault types directly from the online monitoring platform. At the same time, when the products encounter the fault types of temperature, pressure difference, nitrogen and oxygen, the display screen of monitoring terminal will display synchronously, and alarm drivers to remind them so that the relevant personnel can. Enough timely and effective troubleshooting and after-sales maintenance of products. The types of self-failures are as follows:
The logical conditions of the product alarm are as follows:
When the temperature of DOC outlet is higher than the threshold set by the system, the system will alarm.
The system will alarm when the temperature of CDPF outlet is higher than the threshold set by the system.
When the temperature of SCR exit exceeds the threshold set by the system, the system will alarm.
When the pressure difference of CDPF exceeds the alarm threshold set by the system and the maximum threshold, the system will alarm.
The system will alarm when the pressure difference caused by the malfunction or bad contact of the differential pressure sensor is less than or greater than the set threshold value.
When the concentration of nitrogen and oxygen is greater than the threshold set by the system, the system will alarm.
When the liquid level sensor fails, the system will alarm.
When the switch of regeneration control panel fails, the system will alarm.
Emergency Solution for Fault Alarm of Self-contained Products
Zhongzi makes clear and unique identification for each set of remote on-line monitoring terminal equipment, and ensures that the relevant parameters on the platform are fully matched with the information of the installed vehicle and the running condition of the vehicle. After product failure alarm, the company has a complete and detailed emergency support plan:
 Every day, the company has a special person responsible for data analysis and processing of online monitoring platform, which can find and solve problems in time.
 The company's online monitoring platform regularly (according to the set frequency) automatically counts the online situation of vehicles, analyzes whether the products and vehicles are running normally, and alerts some alarm parameters through the platform window. The relevant personnel in charge of the platform will immediately notice the alarm information for timely processing, and contact the maintenance plant for product maintenance. At the same time, we will also monitor some data and information through the platform to ensure that the owners will not privately dismantle the installed products.
 When the monitoring terminal equipment encounters a problem, it can automatically alert the driver and send the alarm information to the monitoring platform through the monitoring terminal to ensure the safety of the vehicle.
On-line Monitoring System for Vehicle Exhaust Temperature and Back Pressure
Monitoring terminal related equipment
The self-developed monitoring terminal equipment includes wiring harness, sensors and so on.