An automatic control system for vehicle off-line double-idling discharging detection

Abstract

An automatic control system for vehicle off-line double-idling discharging detection is provided. The automatic control system improves production efficiency, meets requirements for tatk time, reduces labor strength, does not need a rotating speed sensor, and is accurate in detection. The automatic control system comprises an industrial personal computer, a scanning gun, a server end computer, a discharging analyzer and a vehicle communication transit system (VCI). The VCI comprises a main control module, a K interface circuit, a controller area network (CAN) interface circuit and a power module. The power module supplies power to the main control module connected with the industrial personal computer through a universal series bus (USB) interface, the main control module is connected with the K interface circuit and the CAN interface circuit through a serial communication interface (SCI) interface and a CAN interface, the K interface circuit and the CAN interface circuit are both connected with an in-vehicle network through diagnosis wires, the in-vehicle network is connected with an electric control module (ECU) of an engine through a communication bus, the engine is connected with the discharging analyzer connected with the industrial personal computer, the scanning gun is connected to the industrial personal computer, and the server end computer is connected with the industrial personal computer and a management end computer. The invention further provides a detecting method.

Description

technical field [0001] The invention relates to the technical field of vehicle off-line detection, in particular to an automatic control system for vehicle off-line dual-idle emission detection and a method using the control system. Background technique [0002] According to the law, the exhaust emission value of the car must be tested under two working conditions of high idle speed and low idle speed (30 seconds each). [0003] The current detection scheme is to control the high / low idle speed by manually stepping on the accelerator pedal, and the speed sensor collects the speed signal (such as figure 1 ). When the detection line detects high-idling exhaust emissions, it is difficult to accurately control the accelerator at around 2500r / min by pedaling. Currently, it takes 5-6 minutes to detect a car, which seriously affects production efficiency and is difficult to meet the production cycle requirements, and increases operator workload. In addition, an additional speed ...

AI Technical Summary

Problems solved by technology

When the detection line detects high-idling exhaust emissions, it is difficult to accurately control the accelerator at around 2500r / min by pedaling. Currently, it takes 5-6 minutes to detect a car, which seriously affects production efficiency and is difficult to meet the production cycle requirements, and increases operator workload

And additional speed sensor is required to increase the cost, the sensor is fragile and the reliability is not high

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