The invention discloses a large power automobile lamp alarm system based on constant current protection. The large power automobile lamp alarm system based on the constant current protection is composed of a sound device HA, a control circuit connected with the sound device HA, a trigger circuit connected with the control circuit, a photoconductive resistor RL connected with the trigger circuit, a capacitance multiplier circuit connected with the trigger circuit, a light beam stimulation type logic amplifying circuit connected between the photoconductive resistor RL and the control circuit in series and a logic protection emitting electrode coupling amplifying circuit connected between the light beam stimulation type logic amplifying circuit and a negative pole of the sound device HA in series, and is characterized in that a constant current protection circuit is further connected between a positive pole of the sound device HA and the control circuit in series. The large power automobile lamp alarm system based on the constant current protection can automatically send out an alarm when a driver forgets to turn off an automobile lamp, and thereby can effectively eradicate the circumstance that a vehicle-mounted accumulator is exhausted from occurring. Simultaneously, the large power automobile lamp alarm system based on the constant current protection can detect work currents through the constant current protection circuit, and performs adjustments when the work currents are high, and therefore damage to the large power automobile lamp alarm system based on the constant current protection, caused by excess currents, is avoided.
Large power automobile lamp alarm system based on constant current protection
2015-09-09
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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