A coasting time detection method and detection system

By establishing a data link and a multi-level adjustment mechanism in the coasting time detection system, the automatic identification and stable contact between the sampling roller and the drum are achieved, solving the problems of inconsistent installation and manual timing errors in the existing technology, and improving the accuracy and consistency of the detection.

CN122631363BActive Publication Date: 2026-09-22SUZHOU METROLOGY & TESTING INSTITUTE CO LTD +1
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Patent Information

Application Number
CN202611080841.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-07-21
Publication Date
2026-09-22
Estimated Expiration
2046-07-21

AI Technical Summary

Technical Problem

The existing gliding time detection system has a single method of fixing the sampling wheel, lacks multi-degree-of-freedom fine adjustment, is easily affected by environmental interference, and relies on manual operation for timing, which introduces errors and affects the detection accuracy and consistency.

Method used

By establishing a data link between the main control unit and the speed sampling device, automatic identification and communication initialization are achieved. The spatial pose of the sampling roller is locked using a multi-level adjustment mechanism. Timing is automatically triggered based on real-time linear velocity. Noise is eliminated through digital filtering. Combined with adaptive optimization and automatic timing technology, stable engagement and accurate measurement of the sampling roller and the drum are achieved.

Benefits of technology

It achieves automatic parallel contact between the sampling roller and the drum, eliminates manual installation deviations and environmental interference, ensures the accuracy and consistency of timing, simplifies the detection process, and improves measurement accuracy and repeatability.

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Abstract

The present application relates to the technical field of vehicle performance detection, and particularly relates to a coasting time detection system and method. The system comprises: establishing a data link between a main control unit and a speed sampling device, automatically identifying the speed sampling device and completing communication initialization configuration; adjusting the sampling roller to make it abut against the surface of the chassis dynamometer roller and locking the spatial pose through a multi-stage adjusting mechanism; setting a starting speed threshold and an ending speed threshold based on the measured speed interval and configuring a conversion reference; controlling the main control unit to enter a monitoring state, receiving an original pulse signal based on a preset clock frequency and converting it into a real-time linear speed, automatically triggering timing and latching the effective coasting time according to the real-time linear speed; and associating and storing the effective coasting time with test attribute information. The present application realizes self-adaptive and accurate positioning of the sampling roller through the multi-stage adjusting mechanism, and automatically triggers timing based on a one-way continuous downward trend, thereby improving the precision and efficiency of the coasting time detection.
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