CN202145206U

CN202145206U - Smoke detection control system

Info

Publication number: CN202145206U
Application number: CN201120048448U
Authority: CN
Inventors: 张洪侠; 孙凯; 李存; 杨春宝
Original assignee: Harbin Aircraft Industry Group Co Ltd
Current assignee: Harbin Aircraft Industry Group Co Ltd
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2012-02-15
Anticipated expiration: 2021-02-28

Abstract

The utility model relates to a smoke detection control system capable of achieving a scheduled function. The smoke detection control system comprises a test switch, an indicator light, a first relay, a second relay, a first smoke detector, a second smoke detector, a circuit breaker, a power supply and connecting wires, wherein the first smoke detector and the second smoke detector are respectively provided with five interfaces, i.e. B, H, G, F and D; the interface D of the first smoke detector is connected with the indicator light through the second relay; the interface F of the first smoke detector is connected to the circuit breaker; the interface B of the first detector is connected with the first relay and the test switch; the interface D of the second smoke detector is connected with the indicator light; the interface F of the second smoke detector is connected to the circuit breaker, and the interface B of the second smoke detector is connected with the first relay and the test switch. In the smoke detection control system provided by the utility model, only the test switch is required to be pressed to ensure the integrity of the whole system, besides, the smoke detection control system has the advantages of high integration level, excellent reliability, and reduction of test steps and cost.

Description

The cigarette detection control system

Technical field

The utility model belongs to cigarette detection system Electrical Control Technology, relates to a kind of cigarette detection control system that can accomplish predetermined function.

Background technology

See also Fig. 1, it is existing cigarette detection system electrical control figure.Said cigarette detection control system comprises test switch 1, power supply 9, isolating switch 8, smoke detector 2, pilot lamp 3 and lead group.Wherein, said smoke detector 2 has B, H, G, F, five interfaces of D, the interface B of smoke detector 2 ground connection behind test switch 1, and interface H, the direct ground connection of G, interface F links to each other with power supply 9 behind isolating switch 8, and interface D connects pilot lamp 3 back ground connection.Wherein, the 28V direct supply of power supply 9 for using on the aircraft.And test switch 1 is the correctness that is used for detecting smoke detector integrity and line, and pilot lamp 3 ignites and representes that the cigarette detection system is normal when pushing test switch 1.

During the actual use of cigarette detection control system; Can be owing to a part area needs greatly to use two smoke detectors to survey; But when using a plurality of smoke detector, because the complicacy of aircraft side circuit layout increases detection steps easily; Increase the line interface complicacy, thereby reduce system reliability.

Summary of the invention

The purpose of the utility model: provide that a kind of integrated level is high, good reliability, cigarette detection control system that can two smoke detectors of centralized control.

The technical scheme of the utility model: a kind of cigarette detection control system; It comprises test switch, pilot lamp, first relay, second relay, first smoke detector, second smoke detector, isolating switch and power supply and is connected lead; Wherein, first smoke detector and second smoke detector all have B, H, G, F, five interfaces of D separately, and the direct ground connection of H separately, G interface of said first smoke detector and second smoke detector is connected; And the D interface of first smoke detector links to each other with pilot lamp through second relay; The F interface of first smoke detector is connected on the isolating switch, and the B interface of first smoke detector links to each other with test switch with first relay, and the D interface of said second smoke detector links to each other with pilot lamp; The F interface of second smoke detector is connected on the isolating switch, and its B interface links to each other with test switch with first relay.

The D interface of said second smoke detector is linked to each other with pilot lamp by the circuit of first relay with the control of second relay respectively through two-way.

The beneficial effect of the utility model: the utility model is through increasing the difficult problem that two relays have solved a shared test switch and a display lamp, thereby practiced thrift the installing space of switching motherboard, avoided the change of corresponding LGP and display interface.Only need push a test switch, just can confirm the integrity of total system, integrated level is high, good reliability, and reduced test procedure, and practiced thrift time and fund that switching motherboard, LGP are made again, reduced cost.

Description of drawings

Fig. 1 is the schematic diagram of prior art cigarette detection control system;

Fig. 2 is the principle schematic of the utility model cigarette detection control system,

Wherein, 1-test switch, 2-smoke detector, 3-pilot lamp, 4-first relay, 5-second relay, 6-first smoke detector, 7-second smoke detector, 8-isolating switch, 9-power supply.

Embodiment

Through embodiment the utility model is done further to specify below:

See also Fig. 2, it is the principle schematic of the utility model cigarette detection control system.Said cigarette detection control system comprises test switch 1, pilot lamp 3, first relay 4, second relay 5, first smoke detector 6, second smoke detector 7, isolating switch 8 is with power supply 9 and be connected lead.Wherein, power supply 9 is a 28v standard DC power supply on the aircraft, and first smoke detector 6 and second smoke detector 7 are the same model detector, and the two all has B, H, G, F, five interfaces of D separately.

The direct ground connection of H separately, G interface of said first smoke detector 6 and second smoke detector 7 is connected.And the D interface of first smoke detector 6 links to each other with pilot lamp 3 through second relay 5; The F interface of first smoke detector 6 is connected on the isolating switch 8; The B interface of first smoke detector 6 links to each other with test switch 1 with first relay 4; And receive test switch 1 control, and through test switch 1 input grounding signal.The D interface of said second smoke detector 7 divides two-way to link to each other with pilot lamp 3, and receives the control of first relay 4 and second relay 5 respectively.The F interface of second smoke detector 7 is connected on the isolating switch 8, and its B interface links to each other with test switch 1 with first relay 4, receives test switch 1 control, and through test switch 1 input grounding signal.

During real work, the positive line loop of relay coil is connected; The D end of first smoke detector 6 is through the normally closed contact of second relay 5 and the main track of pilot lamp 3; The D end of second smoke detector 7 links to each other with the main track input end of pilot lamp 3 through the normally closed contact of second relay 5.The connection of test switch 1 is that the coil of second relay 5 provides the negative wire loop, is that the B end of first smoke detector 6 and second smoke detector 7 provides the ground signalling input.

The D end that will cut off first smoke detector 6 and second smoke detector 7 after second relay, 5 coil lines are connected is exported to the circuit of pilot lamp 3; And the D of first smoke detector 6 end is forwarded to the positive electrical input of first relay, 4 coils; Thereby the D end output that first relay, 4 normally opened contacts are connected second smoke detector 7 is forwarded to the main track input end of pilot lamp 3, thereby realizes the control to two smoke detectors.

Therefore the utility model cigarette detection control system is through increasing by two relays; When pushing test switch, 5 work of second relay, second relay 5 is operated in normally opened contact; The B of first smoke detector 6 and second smoke detector 7 holds input signal simultaneously; Then power supply signal of the D of first smoke detector 2 end output makes 4 work of first relay, thereby the D of second smoke detector 3 end is exported a power supply signal, and gives pilot lamp 3 power supplies through the normally opened contact of second relay 4; Pilot lamp 3 ignite the intact and circuit of 2 smoke detectors of proof connect correct, so have only when 2 smoke detectors all just often pilot lamp ignite.Therefore at test switch; Reach the integrity test that has realized two cigarette detection relays under the constant situation of pilot lamp quantity; Solve the difficult problem of a shared test switch and a display lamp, thereby practiced thrift the installing space of switching motherboard, avoided the change of corresponding LGP and display interface.Only need push a test switch, just can confirm the integrity of total system, reduce test procedure, practice thrift time and fund that switching motherboard, LGP are made again.

Claims

1. cigarette detection control system; It is characterized in that: comprise test switch, pilot lamp, first relay, second relay, first smoke detector, second smoke detector, isolating switch and power supply and be connected lead; Wherein, first smoke detector and second smoke detector all have B, H, G, F, five interfaces of D separately, and the direct ground connection of H separately, G interface of said first smoke detector and second smoke detector is connected; And the D interface of first smoke detector links to each other with pilot lamp through second relay; The F interface of first smoke detector is connected on the isolating switch, and the B interface of first smoke detector links to each other with test switch with first relay, and the D interface of said second smoke detector links to each other with pilot lamp; The F interface of second smoke detector is connected on the isolating switch, and its B interface links to each other with test switch with first relay.

2. cigarette detection control system according to claim 1 is characterized in that: the D interface of said second smoke detector is linked to each other with pilot lamp by the circuit of first relay with the control of second relay respectively through two-way.