The invention discloses a vehicle wheel pair triggering system. Two opposite type optoelectronic switches are respectively arranged at the two sides of a steel rail, a center position between the two opposite type optoelectronic switches is the same position as a center position of a photo taking measuring system used for carrying out photo taking measurement on wheels at the two sides of the steel rail, and when the wheels do not pass, signals emitted by emitters of the two opposite type optoelectronic switches can be just received by corresponding receivers. When the wheels pass, the condition that the signals emitted by the emitters of the two opposite type optoelectronic switches are simultaneously shielded shows that the wheels are positioned in the center position of the photo taking measuring system, and at the moment, the photo taking measuring system is triggered for detecting the wheels, so that the wheel information of the position is precisely caught and recorded.
Vehicle wheel pair triggering system
01.04.2015
Patent
Elektronische Ressource
Englisch
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