The invention discloses a speed reduction display device of an automobile, and relates to the technical field of automobile manufacturing. The speed reduction display device comprises a speed sensor for detecting the speed of the automobile. Electric speed signals detected by the speed sensor are input into an analog quantity input I/O port of a single-chip microcontroller MCU. The single-chip microcontroller MCU is used for detecting whether the difference between two electric speed signals collected in two adjacent sampling periods exceeds a preset value or not, wherein the later electric speed signal is lower than the former electric speed signal; when the detected difference exceeds the preset value, the single-chip microcontroller MCU outputs high-level signals; and automobile tail lights are controlled by switching signals output by a digital quantity output I/O port of the single-chip microcontroller MCU to be turned on. The automobile speed reduction display device has the beneficial effects of being high in reliability, good in safety performance and the like.
Speed reduction display device of automobile
2015-10-21
Patent
Electronic Resource
English
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
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