CN204815495U - Fire control linkage drive circuit - Google Patents
Fire control linkage drive circuit Download PDFInfo
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- CN204815495U CN204815495U CN201520545681.XU CN201520545681U CN204815495U CN 204815495 U CN204815495 U CN 204815495U CN 201520545681 U CN201520545681 U CN 201520545681U CN 204815495 U CN204815495 U CN 204815495U
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Abstract
The utility model discloses a fire control linkage drive circuit aims at providing a simple structure, avoids signal interference and reduces the fire control linkage drive circuit of relay energy loss, and the linkage signal of having solved the 24V of coordinated control ware output makes electrical characteristics receive the influence, and the relay loss is markedly increased, and its technical scheme main points are that drive circuit still includes opto -coupler circuit, singlechip, snubber circuit and implementation of circuit, opto -coupler circuit is coupled is used for carrying linkage signal conversion to the singlechip for control signal between linkage signal input part and singlechip, singlechip acquisition control signal and response output executive signal, snubber circuit is coupled and is used for receiving executive signal and time delay in the output of singlechip, implementation of circuit is coupled and is used for receiving the time delayed signal in snubber circuit to the response time delayed signal is in order to cut off being connected of output and circuit breaker. The utility model is suitable for a fire control linkage circuit technical field.
Description
Technical field
The utility model relates to a kind of fire-fighting link circuit engineering field, and more particularly, it relates to a kind of fire-fighting link drive circuit of low-power consumption.
Background technology
Fire-fighting linkage system is an important component part in automatic fire alarm system.Generally include fire protection linkage control device, fire protection control room display unit, transmission equipment, fire protection electric control device, fire-fighting equipment emergency power supply.
Fire-fighting link circuit on market generally adopts fire protection linkage control device to export and controls control signal, then directly adopt obtaining of control signal control relay electric, thus can when breaking out of fire, fire protection linkage control device exports the interlock signal of 24V, then the interlock signal Direct driver relay of 24V realizes the closed action of switch contact, thus the breaker that the switch contact of fire-fighting link circuit relay electrical equipment connects is carried out separating brake.
But because the interlock signal of the 24V of linkage controller output has higher magnitude of voltage, and, by the mode of Direct driver, electrical characteristic is affected, voltage due to 24V makes relay loss obviously increase, relay when closed, due to overtension, easily cause the loss of power excessive, therefore need to make further improvements its drive circuit.
Utility model content
For the deficiency that prior art exists, it is simple that the purpose of this utility model is to provide a kind of structure, avoids signal disturbing and the fire-fighting link drive circuit of reduction relay energy loss.
For achieving the above object, the utility model provides following technical scheme: a kind of fire-fighting link drive circuit, comprise interlock signal input part in order to receive interlock signal, output is coupled to breaker, drive circuit also comprises photoelectric coupled circuit, single-chip microcomputer, buffer circuit and executive circuit, and described photoelectric coupled circuit is coupled between interlock signal input part and single-chip microcomputer and is delivered to single-chip microcomputer in order to interlock signal is converted to control signal;
Described single-chip microcomputer gathers control signal and response exports executive signal;
Described buffer circuit configuration has buffer time, is coupled to the output of single-chip microcomputer, in order to receive executive signal and export time delayed signal after buffer time;
Described executive circuit is coupled to buffer circuit in order to reception delay signal, and responds time delayed signal to cut off the connection of output and breaker.
Preferably, described photoelectric coupled circuit comprises the first resistance, the first diode, photoelectrical coupler and the second resistance;
Two inputs of described photoelectrical coupler are connected to interlock signal input part respectively by the first resistance and the first diode, the negative electrode of described first diode is connected with interlock signal input part, and the output of described photoelectrical coupler is by being connected to the input of single-chip microcomputer after the second resistance pull-up connection.
Preferably, described buffer circuit comprises the first electric capacity, the 3rd resistance and the 4th resistance, series connection the 4th resistance after output connection the 3rd resistance of described single-chip microcomputer, then is connected to executive circuit; Described first Capacitance parallel connection is on the 3rd resistance, and wherein, inhibit signal exports from the 4th resistance.
Preferably, described executive circuit comprises the 5th resistance, NPN triode, relay and the second diode;
The coil of described relay and the second diodes in parallel, one end of coil connects power supply, and the other end connects the colelctor electrode of NPN triode;
The base stage of described NPN triode is connected with emitter stage by the 5th resistance, and emitter stage is ground connection again; Time delayed signal inputs from the base stage of NPN triode.
Compared with prior art, the beneficial effects of the utility model are: first isolated by photoelectric coupled circuit by the interlock signal of 24V, control signal higher for electric pressure and the lower control signal of electric pressure are isolated, avoid DM EMI, improve the electrical characteristic of circuit, then Received signal strength is carried out by single-chip microcomputer, and output signal, control stable, and during single-chip microcomputer output output low and high level, by buffer circuit, a buffering is carried out to electric energy, when the actuating of relay, spike and surge current all can cause the power consumption of relay to become large, relay is easily damaged, for the protection of fire-fighting link, pass through buffer circuit, the energy consumption of relay is reduced, make Circuit Breaker Switching more stable simultaneously, drive in running more safe and reliable in fire-fighting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model fire-fighting link drive circuit embodiment;
Fig. 2 is the circuit theory diagrams of the utility model fire-fighting link drive circuit embodiment.
In figure 1, interlock signal input part; A1, photoelectric coupled circuit; R1, the first resistance; D1, the first diode; U1, photoelectrical coupler; R2, the second resistance; U2, single-chip microcomputer; A2, buffer circuit; C1, the first electric capacity; R3, the 3rd resistance; R4, the 4th resistance; A3, executive circuit; R5, the 5th resistance; Q1, NPN triode; Relay, relay; D2, the second diode.
Detailed description of the invention
Referring to figs. 1 through Fig. 2, the utility model fire-fighting link drive circuit embodiment is described further.
As shown in Figure 1, the coordinated signals signal that linkage controller exports is LINK, LINK ', the connectivity port of interlock signal input part 1 signal for this reason, this port is that 24V links the positive and negative input of signal.This programme adopts fire-fighting link drive circuit indirectly to drive circuit breaker tripping, is reduced the wastage, and avoid the impact of electrical Interference by this mode.
As shown in Figure 2, a kind of fire-fighting link drive circuit, comprise interlock signal input part 1 in order to receive interlock signal, output is coupled to breaker, drive circuit also comprises photoelectric coupled circuit A1, single-chip microcomputer U2, buffer circuit A2 and executive circuit A3, and single-chip microcomputer U2 adopts general 89C51 model.Described photoelectric coupled circuit A1 is coupled between interlock signal input part 1 and single-chip microcomputer U2 and is delivered to single-chip microcomputer U2 in order to interlock signal is converted to control signal; Described single-chip microcomputer U2 gathers control signal and response exports executive signal; Described buffer circuit A2 is coupled to the output of single-chip microcomputer U2 in order to receive executive signal and time delay; Described buffer circuit A2 is configured with buffer time, is coupled to the output of single-chip microcomputer U2, in order to receive executive signal and export time delayed signal after buffer time; Described executive circuit A3 is coupled to buffer circuit A2 in order to reception delay signal, and responds time delayed signal to cut off the connection of output and breaker.
Photoelectric coupled circuit A1 comprises the first resistance R1, the first diode D1, photoelectrical coupler U1 and the second resistance R2; Photoelectrical coupler U1 adopts PC817 model, and low price is easy to use.Two inputs of described photoelectrical coupler U1 are connected to interlock signal input part 1 respectively by the first resistance R1 and the first diode D1, the negative electrode of described first diode D1 is connected with interlock signal input part 1, and the output of described photoelectrical coupler U1 is by being connected to the input of single-chip microcomputer U2 after the second resistance R2 pull-up connection.First resistance R1 is current-limiting resistance, and can play the effect of protection photoelectrical coupler U1, photoelectrical coupler U1 completes the conversion of light-electrical-optical, achieves electric isolation and control.Because the current rating of the light emitting diode forward conduction in general optocoupler is about 30mA, operating current is generally 10mA to 20mA, so the span that can obtain the first resistance R1 according to Current calculation formula is 2.4k Ω to 1.2k Ω.First diode D1 is to prevent input reversal connection from causing optocoupler to damage, playing the effect of protection, prevent reversing the current.Output INCUT, with the pull-up of 3.3V, be in order to single-chip microcomputer U2 electrical level match.
Buffer circuit A2 comprises the first electric capacity C1, the 3rd resistance R3 and the 4th resistance R4, series connection the 4th resistance R4 after output connection the 3rd resistance R3 of described single-chip microcomputer U2, then is connected to executive circuit A3; Described first electric capacity C1 is parallel on the 3rd resistance R3, and wherein, the executive signal after delay exports from the 4th resistance R4.When single-chip microcomputer U2 control signal TUOK is low, NPN triode Q1 ends, and relay R elay does not work; When TUOK is high, to the 5th capacitor charging, 4th resistance R4 is equivalent to transient state short circuit, NPN triode Q1 is operated in saturation conduction state, and relay R elay coil both end voltage is about VCC, and after the 5th capacitor charging completes, because the base current of the effect NPN triode Q1 of the 4th resistance R4 reduces, NPN triode Q1 works in amplification region, thus controls the voltage dropping on the coil two ends of relay R elay, reaches the object reducing power consumption when relay R elay closes.
Executive circuit A3 comprises the 5th resistance R5, NPN triode Q1, relay R elay and the second diode D2; The coil of described relay R elay is in parallel with the second diode D2, and one end of coil connects power supply, and the other end connects the colelctor electrode of NPN triode Q1; The base stage of described NPN triode Q1 is connected with emitter stage by the 5th resistance R5, and emitter stage is ground connection again; Drive singal after time delay inputs from the base stage of NPN triode Q1.
Operation principle: when coordinated signals signal is input as 0, in optocoupler, light emitting diode is not luminous, output not conducting, INCUT is high level 3.3V, and single-chip microcomputer U2 receives signal, is failure to actuate; When coordinated signals signal input 24V signal, photoelectrical coupler U1 conducting, output stage conducting, INCUT is equivalent to ground connection, and level is low, and single-chip microcomputer U2 can export the executive signal of high level, thus performs trip operation, namely makes breaker disconnect.
The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a fire-fighting link drive circuit, comprise interlock signal input part in order to receive interlock signal, output is coupled to breaker, it is characterized in that: drive circuit also comprises photoelectric coupled circuit, single-chip microcomputer, buffer circuit and executive circuit, described photoelectric coupled circuit is coupled between interlock signal input part and single-chip microcomputer and is delivered to single-chip microcomputer in order to interlock signal is converted to control signal;
Described single-chip microcomputer gathers control signal and response exports executive signal;
Described buffer circuit configuration has buffer time, is coupled to the output of single-chip microcomputer, in order to receive executive signal and export time delayed signal after buffer time;
Described executive circuit is coupled to buffer circuit in order to reception delay signal, and responds time delayed signal to cut off the connection of output and breaker.
2. fire-fighting link drive circuit according to claim 1, is characterized in that: described photoelectric coupled circuit comprises the first resistance, the first diode, photoelectrical coupler and the second resistance;
Two inputs of described photoelectrical coupler are connected to interlock signal input part respectively by the first resistance and the first diode, the negative electrode of described first diode is connected with interlock signal input part, and the output of described photoelectrical coupler is by being connected to the input of single-chip microcomputer after the second resistance pull-up connection.
3. fire-fighting link drive circuit according to claim 1, is characterized in that: described buffer circuit comprises the first electric capacity, the 3rd resistance and the 4th resistance, series connection the 4th resistance after output connection the 3rd resistance of described single-chip microcomputer, then is connected to executive circuit; Described first Capacitance parallel connection is on the 3rd resistance, and wherein, inhibit signal exports from the 4th resistance.
4. the fire-fighting link drive circuit according to claim 1 or 2 or 3, is characterized in that: described executive circuit comprises the 5th resistance, NPN triode, relay and the second diode;
The coil of described relay and the second diodes in parallel, one end of coil connects power supply, and the other end connects the colelctor electrode of NPN triode;
The base stage of described NPN triode is connected with emitter stage by the 5th resistance, and emitter stage is ground connection again; Time delayed signal inputs from the base stage of NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545681.XU CN204815495U (en) | 2015-07-25 | 2015-07-25 | Fire control linkage drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545681.XU CN204815495U (en) | 2015-07-25 | 2015-07-25 | Fire control linkage drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204815495U true CN204815495U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520545681.XU Expired - Fee Related CN204815495U (en) | 2015-07-25 | 2015-07-25 | Fire control linkage drive circuit |
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| CN (1) | CN204815495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073694A (en) * | 2016-04-29 | 2018-12-21 | 程洪 | The devices, systems, and methods that alarm triggering power supply disconnects |
-
2015
- 2015-07-25 CN CN201520545681.XU patent/CN204815495U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073694A (en) * | 2016-04-29 | 2018-12-21 | 程洪 | The devices, systems, and methods that alarm triggering power supply disconnects |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20200725 |