CN201308737Y

CN201308737Y - Automatic transfer switch with fire-protection reset function

Info

Publication number: CN201308737Y
Application number: CNU2008201435918U
Authority: CN
Inventors: 史祺; 高云旭; 黄艳杰
Original assignee: Tianjin Baili Electronic Co Ltd
Current assignee: Tianjin Baili Electronic Co Ltd
Priority date: 2008-11-28
Filing date: 2008-11-28
Publication date: 2009-09-16
Anticipated expiration: 2018-11-28

Abstract

The utility model relates to an automatic transfer switch with fire-protection reset function, comprising an intelligent controller and a self-locking button of a user fire-protection control chamber. The intelligent controller is provided with a fire-protection reset circuit; two ends of the self-locking button of the user fire-protection control chamber are connected to an input terminal of the fire-protection reset circuit of the intelligent controller, and two ends of a normally-open node of a relay in the fire-protection reset circuit are connected with an actuating mechanism of the automatic transfer switch. Because the fire-protection reset circuit is additionally arranged in the intelligent controller of the automatic transfer switch, a user is respectively connected with a group of input terminals on the intelligent controller at two ends of the self-locking button of the fire-protection control chamber, and the intelligent controller judges whether a fire-protection reset signal is generated to achieve the purpose of conveniently cutting off the power supply in emergent accident. The utility mode solves the problem that the fire-protection control chamber is too far away from the accident site, and voltage drop of the power supply on a lead is too large so as to cause the failure power supply to be not reliably cut off in time.

Description

Automatic change-over with fire-fighting reset function

Technical field

The utility model belongs to a kind of electric switch, particularly relates to a kind of automatic change-over with fire-fighting reset function.

Background technology

Automatic change-over is applicable to that one main one is equipped with or the distribution system of stand-by power supply each other, is widely used in hospital, and computer center, TV station and skyscraper etc. do not allow the important place that cuts off the power supply.When these place breaking out of fires, during accidents such as equipment fault,, reduce life and property loss for fear of the accident expanded range, must promptly emergency power supply be cut off.The scheme of generally taking at present is, the shunt opening annex is installed on automatic change-over, and specification mostly is DC24V greatly, and AC220V gets electricly by control shunt opening coil, cause switch to be threaded off after its action.If the fire protection control room distance field is too far away, the pressure drop of power supply on long distance of wire is too big, and the undertension at actual arrival coil two ends is so that the shunt opening annex is threaded off, and in time the disengagement failure power supply will be given people's life, and national wealth brings heavy losses.

Summary of the invention

The utility model provides a kind of automatic change-over with fire-fighting reset function that does not need the shunt opening annex for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: it includes intelligent controller, also includes the locking press button of user's fire protection control room; A fire-fighting reset circuit is arranged on described intelligent controller; On the input terminal of the described intelligent controller fire-fighting of the two terminations reset circuit of the locking press button of described user's fire protection control room, an input of one termination, first optocoupler of described input terminal, the input terminal other end is connected another input end grounding of described first optocoupler by first resistance with power supply VCC; One end of the output of described first optocoupler is connected to the I/01 port of a single-chip microcomputer, joins another output termination power of first optocoupler VCC simultaneously by second resistance and ground; Described single-chip microcomputer confirm input signal be the fire-fighting reset signal and continue for some time after, by its I/02 port output high level by the input of the 3rd resistance to second optocoupler, another input end grounding of described second optocoupler; One end of the output of described second optocoupler joins by a relay coil and power supply VCC, another output head grounding of described second optocoupler; Two ends of often opening node of described relay are connected with the executing agency of this automatic change-over.

Advantage and the good effect that the utlity model has are: increase the fire-fighting reset circuit owing to adopted in the intelligent controller of automatic change-over, as long as at user's fire protection control room a passive locking press button is installed, the button two ends are connected with one group of input terminal on the automatic change-over intelligent controller respectively.Judge by intelligent controller whether produce the fire-fighting reset signal.Need not to install the shunt opening annex on the automatic change-over, can realize the purpose of when emergency episode takes place, cutting off the electricity supply easily.Thereby avoided the fire protection control room distance field too far away, the pressure drop of power supply on long distance of wire is too big, and in time the disengagement failure power supply is given people's life, and national wealth brings the problem of heavy losses.

Description of drawings

Fig. 1 is a fire-fighting reset controller circuit theory wiring diagram of the present utility model.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

As shown in Figure 1, be fire-fighting reset circuit in the automatic change-over intelligent controller in the dotted line.The two ends of the button S1 of user's fire protection control room are by the corresponding input terminal of intelligent controller fire-fighting reset circuit, the input other end of one termination light lotus root U1 is connected with power supply VCC by resistance R 1, output one end of optocoupler U1 is connected to the I/O1 port of single-chip microcomputer U3, pass through resistance R 2 ground connection, another termination power VCC simultaneously; The I/O1 port of single-chip microcomputer U3 becomes high level by low level, single-chip microcomputer U3 thinks that this signal is the fire-fighting reset signal, after this signal continues for some time, export high level to light lotus root U2 by the I/O2 port of single-chip microcomputer, the output of optocoupler U 2 meets power supply VCC by relay K 1 coil, other end ground connection; The node of often opening of relay K 1 is connected with the executing agency of automatic change-over.

The course of work of the present utility model is: when button S1 presses, corresponding terminal on the intelligent controller is communicated with, the input of light lotus root U1 is connected with power supply VCC by resistance R 1, U1 work, the output conducting of U1, the I/O1 port that is connected to single-chip microcomputer U3 becomes high level by low level, single-chip microcomputer U3 thinks that this signal is the fire-fighting reset signal, after this signal continues for some time, by I/O2 port output high level, control light lotus root U2 work, the conducting of U2 output, it is electric to make that relay K 1 coil gets, relay K 1 often open the node closure, this node is connected with the executing agency of automatic change-over, after this node closure, executing agency gets electric work, and the control automatic change-over is transformed into complete minute state, has finally realized the fire-fighting reset function.After accident solves, the user only needs button S1 is lifted, U1 quits work, the I/O1 port becomes low level by high level, and single-chip microcomputer U3 thinks that the fire-fighting reset signal disappears, control U2 work, relay coil K1 gets, relay normally open node closure, normal power source is connected in the work of automatic change-over executing agency, and the intelligent controller of automatic change-over withdraws from the fire-fighting reset mode.

Claims

1. automatic change-over with fire-fighting reset function, it includes intelligent controller, it is characterized in that: the locking press button that also includes user's fire protection control room; A fire-fighting reset circuit is arranged on described intelligent controller; On the input terminal of the described intelligent controller fire-fighting of the two terminations reset circuit of the locking press button of described user's fire protection control room, an input of one termination, first optocoupler of described input terminal, the input terminal other end is connected another input end grounding of described first optocoupler by first resistance with power supply VCC; One end of the output of described first optocoupler is connected to the I/O1 port of a single-chip microcomputer, joins another output termination power of first optocoupler VCC simultaneously by second resistance and ground; Described single-chip microcomputer confirm input signal be the fire-fighting reset signal and continue for some time after, by its I/O2 port output high level by the input of the 3rd resistance to second optocoupler, another input end grounding of described second optocoupler; One end of the output of described second optocoupler joins by a relay coil and power supply VCC, another output head grounding of described second optocoupler; Two ends of often opening node of described relay are connected with the executing agency of this automatic change-over.