Filament open-circuit protector for constant-current light modulation system of air station navigation light

A technology of constant current dimming and navigation lights, applied in the field of circuit devices, can solve problems such as loss and forced closure of airports, and achieve the effects of improving work efficiency, enhancing operational reliability, and reducing costs

Inactive Publication Date: 2008-08-20
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Once this happens, it will cause the airport to be temporarily forced to close the accident, and may cause even greater losses

Method used

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  • Filament open-circuit protector for constant-current light modulation system of air station navigation light
  • Filament open-circuit protector for constant-current light modulation system of air station navigation light
  • Filament open-circuit protector for constant-current light modulation system of air station navigation light

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Experimental program
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Embodiment Construction

[0042] As shown in Fig. 1-Fig. 20, an open circuit protector for the filament of the constant current dimming system of the airport navigation light is characterized in that it contains a main switch connected in parallel with a mechanical contact switch and a semiconductor switch, a micro power converter, and a voltage detection The current detection sensor amplifier, rectifier, comparator and relay driver composed of circuit, current detection circuit and operational amplifier, because the above circuits have many different structural forms, the object of the invention is a variety of forms formed by various circuit combinations The product. After the mechanical contact switch and the semiconductor switch are connected in parallel, they are connected in parallel to both ends of the socket of the tungsten-halogen bulb. It is specially used for the protection of the isolation transformer when the filament of the constant current dimming system of the airport navigation light is...

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Abstract

The invention discloses a filament open circuit protector used in airport beacon light adjustment system with constant current. The protector is a four-end device composed of minitype electrical source, minitype relay, semiconductor double-way switch and voltage detecting circuit, which is connected in series between isolation transformer secondary socket and halogen lamp plug of airport beacon light adjustment system with constant current. When load circuit is normal, the protector doesn't affect normal working; once load opening circuit, the protector shorts isolation transformer secondary immediately, and makes isolation transformer in idle load working state, accordingly, possibility that can cause damage of isolation transformer secondary circuit opening circuit processing caused by airport beacon light adjustment system filament open circuit with constant current can be completely eradicated. Operation maintenance cost is reduced, labor intensity of staff is lightened, working efficiency is increased and operating reliability of beacon light system and safety of airplane rise-and-down are enhanced.

Description

technical field [0001] The invention relates to a circuit device for a general electric light source, in particular to an electrical protection device for airport navigational lighting electrical equipment, in particular to a filament open circuit protector for the airport navigational light constant current dimming system. Background technique [0002] The airport navigation lighting system is a necessary visual aid to ensure the normal take-off and landing of aircraft at night or in low visibility conditions. It is closely related to the safe operation of aircraft takeoff, landing and taxiing. Therefore, the stability and reliability of the navigation lighting system , Contingency is particularly important. [0003] Modern navigation aid dimming systems generally use halogen tungsten lamps connected in series and powered by constant current dimmers. Its basic composition is shown in Figure 21. [0004] The constant current dimming system mainly consists of low-voltage po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/38H05B41/292H02H3/20
CPCY02B20/208Y02B20/00
Inventor 王长友
Owner DALIAN JIAOTONG UNIVERSITY
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