CN106656135B - Fire-fighting electronic switch circuit with interlocking function - Google Patents
Fire-fighting electronic switch circuit with interlocking function Download PDFInfo
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- CN106656135B CN106656135B CN201710069690.XA CN201710069690A CN106656135B CN 106656135 B CN106656135 B CN 106656135B CN 201710069690 A CN201710069690 A CN 201710069690A CN 106656135 B CN106656135 B CN 106656135B
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052710 silicon Inorganic materials 0.000 abstract description 10
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 description 7
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
- H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0009—AC switches, i.e. delivering AC power to a load
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a fire-fighting electronic switch circuit with an interlocking function, which comprises a rectifier bridge BR1, a rectifier bridge BR2, a triode Q1, a unidirectional thyristor SCR1 and an optical coupler U1, wherein a port 1 of the rectifier bridge BR1 is connected with a fuse F1, a port 2 of the rectifier bridge BR1 is connected with a resistor R1, an anode of the unidirectional thyristor SCR1 and an anode of the unidirectional thyristor T1, and the other end of the resistor R1 is connected with a resistor R6 and a collector of the triode Q1. The beneficial effects of the invention are as follows: (1) The service life requirement (on, guan Cishu is far greater than mechanical contact) of frequent switching of products can be realized by adopting the silicon controlled rectifier as a switching device. (2) Fire wire and load return circuit, fire control live wire and load return circuit, two return circuits realize the interlocking, namely: when one loop is conductive, the other loop is non-conductive. (3) The product does not need to be initialized, the fire line end is not required to be electrified first, and the fire-fighting loop can be electrified directly to work, so that the product is stable and reliable.
Description
Technical Field
The invention relates to an electronic switch, in particular to a fire-fighting electronic switch circuit with an interlocking function.
Background
The normal working loop of the electronic switch is between the live wire and the load, the load is not connected during the standby of the switch, and the electronic switch has more triggering and conducting modes, such as: pressing, touching, acousto-optic control, infrared and other modes (normal load switching work is realized through the triggering modes), but when fire situations such as fire disaster occur, the fire extinguishing line end is electrified, and then the electronic switch can forcibly switch on the load (generally, the lighting lamp), namely: plays a role in forcing the illumination of the environment and the like.
The electronic fire-fighting switch on the market at present mainly comprises the following wiring and control modes:
(1) 4 line type electronic fire switch, wiring mode: fire wire, fire control live wire, zero line, load line.
Such fire-fighting switches are cumbersome to route and are mechanical contacts with an undesirable life.
(2) One is a 3-wire electronic fire switch, the wiring mode: fire wire, fire control fire wire (signal control), load line.
The fire-fighting line of the switch only plays a role of signal control, and after the fire-fighting fire wire is electrified, the actual conduction loop is still a loop formed by the fire wire and the load. Moreover, the biggest problem is that the fire-fighting fire wire has strict requirements: the fire-fighting live wire must be special and cannot be connected with any electric appliance (such as an emergency lamp, a safety exit indicator lamp and the like) except the fire-fighting switch of the type, and the application is limited.
(3) Another 3-wire electronic fire-fighting switch, the wiring mode: fire wire, fire-fighting fire wire (actual power supply), load wire.
The fire protection line of the switch can directly supply power to a load, but most of the products on the market at present are realized by adopting a relay (comprising a magnetic latching relay), the fire protection switch of the type has the defects of high cost, mechanical contact, unsatisfactory service life and poor product stability, and the fire protection switch adopting the magnetic latching relay can be normally used after the fire protection wire end is electrified normally, otherwise, the initial state of the switch is uncertain.
In the early stage of the switch, a silicon controlled rectifier cannot be used as a switching device, because two paths of inputs (a fire wire and a fire-fighting fire wire) are corresponding to one path of output (a shared load) and cannot be interlocked (namely, one path of input cannot be conducted after being connected with the load, and the other path of input cannot be conducted), otherwise, when a normal switching circuit (a circuit between the fire wire and the load) is conducted, if a fire-fighting circuit (a circuit between the fire-fighting fire wire and the load) is not forcibly turned off, the fire wire is directly led to a fire-fighting wire end through a load end, and the fire-fighting fire wire end of the switch is led to the fire-fighting fire wire ends of all switches in the system, so that all other switches are lighted (the fire-fighting wire end of the switch is not lighted) and the switch is burnt out due to overload (all other switches are powered through the fire-fighting circuit of the switch).
Disclosure of Invention
The invention aims to solve the problem of providing a test platform of a high-voltage TSC dynamic reactive power compensation device, which provides a guiding basis for research and development experiments and factory debugging of the high-voltage reactive power compensation device so as to solve the problem in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The fire control electronic switch circuit with the interlocking function comprises a rectifier bridge BR1, a rectifier bridge BR2, a triode Q1, a unidirectional thyristor SCR1 and an optical coupler U1, wherein a port 1 of the rectifier bridge BR1 is connected with a fuse F1, a port 2 of the rectifier bridge BR1 is connected with a resistor R1, an anode of the unidirectional thyristor SCR1 and an anode of the unidirectional thyristor T1, the other end of the resistor R1 is connected with a resistor R6 and a collector of the triode Q1, an emitter of the triode Q1 is connected with a resistor R10 and a pin 1 of a three-terminal voltage regulator U3, a cathode of the unidirectional thyristor SCR1 is connected with a resistor R4, a resistor R5, a capacitor C2, a capacitor C3, an anode of the diode Z1, a pin 2 of the three-terminal voltage regulator U3 and a port 4 of the rectifier bridge BR1, the other end of the resistor R6 is connected with a cathode of the diode D4 and a base of the triode Q1, a control electrode of the unidirectional thyristor SCR1 is connected with an anode of the diode D1 and the resistor R4, a cathode of the diode D1 is connected with an anode of the diode D2, the cathode of the diode D2 is connected with the anode of the diode D3, a resistor R7, a capacitor C1 and a resistor R3, the control electrode of the unidirectional thyristor T1 is connected with a resistor R8, the other end of the resistor R8 is connected with a resistor R9 and the collector of a triode inside the optocoupler U1, the emitter of the triode inside the optocoupler U1 is grounded, the anode of the light-emitting diode inside the optocoupler U1 is connected with a resistor R2, the other end of the resistor R2 is connected with a resistor R12, a capacitor C4, the cathode of the diode D6 and the anode of the diode D7, the port 3 of the rectifier bridge BR2 is connected with a thermistor RNTC and the port 3 of the rectifier bridge BR1, the other end of the thermistor RNTC is connected with a LOAD LOAD, the port 2 of the rectifier bridge BR2 is connected with a resistor R14, the anode of the unidirectional thyristor SCR2 and the anode of the unidirectional thyristor T2, the control electrode of the unidirectional thyristor SCR2 is connected with the anode of the resistor R11, the other end of the resistor R11 is connected with the resistor R13, the capacitor C5 and the port 4 of the unidirectional thyristor SCR2, the control electrode of the unidirectional thyristor T2 is connected with the resistor R15, the other end of the resistor R15 is connected with the resistor R16 and the collector electrode of the triode inside the optocoupler U2, the emitter electrode of the triode inside the optocoupler U2 is grounded, the anode electrode of the light emitting diode inside the optocoupler U2 is connected with the resistor R7, and the other end of the resistor R16 is connected with the cathode electrode of the diode Z2, the other end of the resistor R14 and the other end of the capacitor C6.
As a preferred embodiment of the present invention: the diode Z1 is a zener diode.
Compared with the prior art, the invention has the beneficial effects that: (1) The service life requirement (on, guan Cishu is far greater than mechanical contact) of frequent switching of products can be realized by adopting the silicon controlled rectifier as a switching device. (2) Fire wire and load return circuit, fire control live wire and load return circuit, two return circuits realize the interlocking, namely: when one loop is conductive, the other loop is non-conductive. (3) The product does not need to be initialized, the fire line end is not required to be electrified first, and the fire-fighting loop can be electrified directly to work, so that the product is stable and reliable.
Drawings
Fig. 1 is a block diagram of a fire electronic switching circuit with interlock.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a fire-fighting electronic switch circuit with interlocking function includes a rectifier bridge BR1, a rectifier bridge BR2, a triode Q1, a unidirectional thyristor SCR1 and an optical coupler U1, wherein a port 1 of the rectifier bridge BR1 is connected with a fuse F1, a port 2 of the rectifier bridge BR1 is connected with a resistor R1, an anode of the unidirectional thyristor SCR1 and an anode of the unidirectional thyristor T1, the other end of the resistor R1 is connected with a resistor R6 and a collector of the triode Q1, an emitter of the triode Q1 is connected with a resistor R10 and a pin 1 of a three-terminal voltage regulator U3, a cathode of the unidirectional thyristor SCR1 is connected with a resistor R4, a resistor R5, a capacitor C2, a capacitor C3, an anode of the diode Z1, a pin 2 of the three-terminal voltage regulator U3 and a port 4 of the rectifier bridge BR1, the other end of the resistor R6 is connected with a cathode of the diode D4 and a base of the triode Q1, a gate of the unidirectional thyristor SCR1 is connected with an anode of the diode D1 and an anode of the diode D2, the cathode of the diode D2 is connected with the anode of the diode D3, a resistor R7, a capacitor C1 and a resistor R3, the control electrode of the unidirectional thyristor T1 is connected with a resistor R8, the other end of the resistor R8 is connected with a resistor R9 and the collector of a triode inside the optocoupler U1, the emitter of the triode inside the optocoupler U1 is grounded, the anode of the light-emitting diode inside the optocoupler U1 is connected with a resistor R2, the other end of the resistor R2 is connected with a resistor R12, a capacitor C4, the cathode of the diode D6 and the anode of the diode D7, the port 3 of the rectifier bridge BR2 is connected with a thermistor RNTC and the port 3 of the rectifier bridge BR1, the other end of the thermistor RNTC is connected with a LOAD LOAD, the port 2 of the rectifier bridge BR2 is connected with a resistor R14, the anode of the unidirectional thyristor SCR2 and the anode of the unidirectional thyristor T2, the control electrode of the unidirectional thyristor SCR2 is connected with the anode of the resistor R11, the other end of the resistor R11 is connected with the resistor R13, the capacitor C5 and the port 4 of the unidirectional thyristor SCR2, the control electrode of the unidirectional thyristor T2 is connected with the resistor R15, the other end of the resistor R15 is connected with the resistor R16 and the collector electrode of the triode inside the optocoupler U2, the emitter electrode of the triode inside the optocoupler U2 is grounded, the anode electrode of the light emitting diode inside the optocoupler U2 is connected with the resistor R7, and the other end of the resistor R16 is connected with the cathode electrode of the diode Z2, the other end of the resistor R14 and the other end of the capacitor C6.
The diode Z1 is a zener diode.
The working principle of the invention is as follows: this patent circuit has two circuit return circuits: one is a switching circuit (main circuit) between the fire line and the load and the other is a switching circuit (fire circuit) between the fire line and the load.
Under normal conditions, only the main loop is electrified, the live wire of the commercial power forms a standby power supply loop through a fuse F1, a rectifier bridge BR1, resistors R1 and R6, a switching triode Q1, a voltage stabilizing tube D4, a resistor R10, a voltage stabilizing tube Z1, a capacitor C3, a three-terminal voltage stabilizer U3 and a thermistor NTC, and after the commercial power is rectified by the BR1, the commercial power forms a small-sized switching power supply circuit through R1, Q1, R6, D4, R10, Z1 and C3 and then the standby working voltage is provided for a control module (such as a sound control module, an infrared induction module and a touch module) through U3 voltage stabilization.
After the control module outputs signals, the control module triggers the silicon controlled rectifier T1 to conduct through R9, R8 and C2, so that an instant voltage drop is formed on R5, when the voltage drop is larger than the breakdown value of the voltage stabilizing tube D1, the D1 is conducted to trigger the main silicon controlled rectifier SCR1 to conduct, and then a conducting loop is formed through F1, BR1, SCR1 and NTC, so that LOAD LOAD operation is conducted (namely, a path is formed from the commercial power at the L end to the LOAD at the LOAD end). (note: F1 is the main loop fuse, NTC is the negative temperature coefficient thermistor, set for the load loop to resist the cold start transient high current; C1 is the anti-interference capacitor, R4 is the main thyristor pull-down resistor).
In the above-mentioned triggering main scr conduction process, the instantaneous voltage drop on R5 charges C1 through D2 and charges C3 through D3 again, so that a voltage slightly lower than the voltage stabilizing value of the voltage stabilizing tube D1 is obtained on C3 (about equal to the voltage drop of D1 voltage stabilizing value minus D2 and D3), and the voltage on C3 charges with half cycle of the mains supply as frequency, namely: the stable control voltage output can be obtained at two ends of the C3 and is supplied to the U3 so as to be supplied to the control module.
Fire interlock special design part: at the same time of the operation of the main circuit, because the load ends of the fire protection circuit and the main circuit are common (are an electrical connection point), when the main circuit is conducted, the load end is equivalent to a live wire on which the commercial power is conducted, and the live wire voltage passes through R14, Z2, C6, R16 and R15 through the BR2 rectifier bridge to trigger the conduction of the thyristor T2 (the triggering principle is the same as that of the main circuit), and then the SCR2 is conducted, and the voltage is led to the XF end, so that the XF end is brought to the commercial power, which is not allowed. The design is therefore as follows: c1 and R3 are designed between D2 and D3 of the main loop, and in the process of triggering the main silicon controlled rectifier SCR1, voltages are obtained at the C1 at the same time (the mode is the same as the mode of obtaining the voltages on the C3), and the voltages obtained at the two ends of the C1 are used for controlling one side of a luminous tube of a photoelectric coupler U2 to conduct through R7, so that the triode at the other side of the U2 is saturated and conducted, and the common point of R15 and R16 is connected in pairs, namely: the voltage of the connection point of R15 and R16 is pulled down to the ground, so that the trigger conduction of the silicon controlled rectifier T2 is not caused, the conduction of the SCR2 is locked, and the following is realized: the main circuit is conducted (the load is connected) and the fire-fighting circuit is locked and not connected.
Fire loop operation: the fire wire is connected to the XF end, trigger working voltage is generated through a fuse F2, a rectifier bridge BR2, a resistor R14, a voltage stabilizing tube Z2 and a capacitor C6, and then the silicon controlled rectifier T2 is triggered to work through resistors R16, R15 and C5, so that the circuit silicon controlled rectifier SCR2 is triggered to conduct (the principle is the same as the principle of main circuit triggering, wherein C5 is an anti-interference capacitor, and R11 is a main silicon controlled rectifier pull-down resistor). The principle of the circuit is the same as that of the main circuit when the circuit is conducted, and the R13, D5, D6 and D7 generate control voltages after the thyristors are conducted (the principle is the same as that of the main circuit). The lock circuit is also designed for the conduction of the main locking loop after the conduction of the fire protection loop, and related elements are as follows: c4, R12, R2 and U1, so that the connection point of R9 and R8 is grounded, and the locking function realized by triggering on of T1 and SCR1 is avoided.
The interlocking of the main circuit and the fire circuit is specifically designed: d3, D7, only one loop can be controlled (locked) when the other loop is on; r3 and R12 are designed for respectively discharging C1 and C4 rapidly, and can realize the function of rapidly releasing the lock.
Claims (1)
1. The fire control electronic switch circuit with the interlocking function comprises a rectifier bridge BR1, a rectifier bridge BR2, a triode Q1, a unidirectional thyristor SCR1 and an optical coupler U1, and is characterized in that a port 1 of the rectifier bridge BR1 is connected with a fuse F1, a port 2 of the rectifier bridge BR1 is connected with a resistor R1, an anode of the unidirectional thyristor SCR1 and an anode of the unidirectional thyristor T1, the other end of the resistor R1 is connected with a resistor R6 and a collector of the triode Q1, an emitter of the triode Q1 is connected with a resistor R10 and a pin 1 of a three-terminal voltage regulator U3, a cathode of the unidirectional thyristor SCR1 is connected with a main thyristor pull-down resistor R4, a resistor R5, a capacitor C2, a capacitor C3, an anode of a diode Z1, a pin 2 of the three-terminal voltage regulator U3 and a port 4 of the rectifier bridge BR1, the other end of the resistor R6 is connected with a cathode of the diode D4 and a base of the triode Q1, a control electrode of the unidirectional thyristor SCR1 is connected with the anode of the diode D1 and the main thyristor pull-down resistor R4, the cathode of the diode D1 is connected with the anode of the diode D2, the cathode of the diode D2 is connected with the anode of the diode D3, the resistor R7, the capacitor C1 and the resistor R3, the control electrode of the unidirectional thyristor T1 is connected with the resistor R8, the other end of the resistor R8 is connected with the resistor R9 and the collector of the triode inside the optocoupler U1, the emitter of the triode inside the optocoupler U1 is grounded, the anode of the light emitting diode inside the optocoupler U1 is connected with the resistor R2, the other end of the resistor R2 is connected with the resistor R12, the capacitor C4, the cathode of the diode D6 and the anode of the diode D7, the port 3 of the rectifier bridge BR2 is connected with the thermistor RNTC and the port 3 of the rectifier bridge BR1, the other end of the thermistor RNTC is connected with the LOAD LOAD, the port 2 of the rectifier bridge BR2 is connected with the resistor R14, the anode of the unidirectional thyristor SCR2 and the anode of the unidirectional thyristor T2, the control electrode of the unidirectional thyristor SCR2 is connected with the anode of the diode D5 and the resistor R11, the other end of the resistor R11 is connected with the resistor R13, the capacitor C5 and the port 4 of the unidirectional thyristor SCR2, the control electrode of the unidirectional thyristor T2 is connected with the resistor R15, the other end of the resistor R15 is connected with the resistor R16 and the collector electrode of the triode inside the optocoupler U2, the emitter electrode of the triode inside the optocoupler U2 is grounded, the anode electrode of the light-emitting diode inside the optocoupler U2 is connected with the resistor R7, and the other end of the resistor R16 is connected with the cathode electrode of the diode Z2, the other end of the resistor R14 and the other end of the capacitor C6; the diode Z1 is a zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069690.XA CN106656135B (en) | 2017-02-08 | 2017-02-08 | Fire-fighting electronic switch circuit with interlocking function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069690.XA CN106656135B (en) | 2017-02-08 | 2017-02-08 | Fire-fighting electronic switch circuit with interlocking function |
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| CN106656135A CN106656135A (en) | 2017-05-10 |
| CN106656135B true CN106656135B (en) | 2024-06-25 |
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| CN201710069690.XA Active CN106656135B (en) | 2017-02-08 | 2017-02-08 | Fire-fighting electronic switch circuit with interlocking function |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206611398U (en) * | 2017-02-08 | 2017-11-03 | 刘剑 | A kind of fire-fighting electronic on-off circuit with interlock function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1186363A (en) * | 1966-06-24 | 1970-04-02 | Lucas Industries Ltd | Thyristor Circuits |
| CN2802847Y (en) * | 2005-01-14 | 2006-08-02 | 刘剑 | Universal single polar induction switch circuit with fire control function |
| CN205407767U (en) * | 2016-01-24 | 2016-07-27 | 广州市金矢电子有限公司 | Unidirectional thyristor triggers throttling circuit and trigger device thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206611398U (en) * | 2017-02-08 | 2017-11-03 | 刘剑 | A kind of fire-fighting electronic on-off circuit with interlock function |
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