CN202679334U - A electronic switch which can be forcedly started in emergency - Google Patents
A electronic switch which can be forcedly started in emergency Download PDFInfo
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- CN202679334U CN202679334U CN 201220354799 CN201220354799U CN202679334U CN 202679334 U CN202679334 U CN 202679334U CN 201220354799 CN201220354799 CN 201220354799 CN 201220354799 U CN201220354799 U CN 201220354799U CN 202679334 U CN202679334 U CN 202679334U
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Abstract
The utility model relates to an electronic switch which can be forcedly started in emergency. The electronic switch comprises a master control circuit, a switch circuit, and a switch driving circuit. The switch circuit comprises a main switch circuit which is connected between a load and the live wire of a power supply in series, and an auxiliary switch circuit which is connected between the load and the connecting end of an emergency power supply in series. The master control circuit controls the operation of the switch circuit through the switch driving circuit. The switch driving circuit comprises a master switch driving circuit and an auxiliary switch driving circuit which are connected with and controlled by the master control circuit. The output end of the master switch driving circuit and the output end of the auxiliary switch driving circuit are connected with the main switch circuit and the auxiliary switch circuit, respectively. In the electronic switch, time-delayed switching is achieved by using two switching elements. Therefore, voltaic arc influence on an entire circuit and the load can be effectively prevented so that reliable and stable operation is achieved, the voltaic arc generated by switching a single switch. In addition, a relay is used as a switching element in the main switch circuit in order to achieve characteristics of large capacity, impact resistance, and strong anti-interference capability.
Description
Technical field
The utility model relates to a kind of electronic switch, specifically refers to a kind of electronic switch of meeting an urgent need and starting by force.
Background technology
In order to take into account hommization and energy-conservation, between the building ladder or the illumination of passage extensively adopt electron-like switches such as infrared induction, controlled by sound and light, touch time-delay.The common feature of this class switch is: open autoshutdown after continuity a period of time when satisfying trigger condition.For security against fire, this electron-like switch is required to be designed to: except fire line terminal (L end) and face terminals (A end), and must be with emergency power supply incoming end (C end).During installation, the emergency power supply incoming end of all switches (C end) is connected in parallel, and (C end) do not connect power supply at ordinary times, and electronic switch can normal switch.Need to throw light on when ensureing when running into fire-fighting or other accidents, emergency power supply incoming end (C end) can be access in power supply, and all lighting loads that are in closed condition will be forced to open, and throws light on guaranteeing.It is switch element that early stage electronic switch extensively adopts controllable silicon, and its shortcoming is: heating is large, not anti-rush of current, and defective workmanship can't detect.In view of the silicon controlled shortcoming, increasing electronic switch adopts relay as switch element.Although the preferred plan that satisfies fire protection rule is: switching circuit uses the single-pole double throw relay that load end is switched between live wire and the emergency power supply incoming end (C end).Yet, can produce electric arc during the contact disjunction of relay, for example: directly adopt common single-pole double throw Control (A end) between (L end) and (C end), to switch and connect, can be because electric arc extinguish, the electric current of (L end) flows through other that be connected in parallel by electric arc through (C end) and is in the switch of closed condition, the lamp that causes being correlated with is lit, until arc extinction, (L end) returned till the insulation with (C end).Be embodied in: the moment that lamp extinguishes, entire building is in the lamp that extinguishes state and dodges simultaneously.
Summary of the invention
The problem that the utility model need to solve provides the electronic switch that a kind of working stability can be met an urgent need reliably and be started by force.
The technical scheme that the utility model is taked is as follows: a kind of electronic switch of meeting an urgent need and starting by force, comprise governor circuit, switching circuit, switch driving circuit, governor circuit is by switch driving circuit control switch circuit working, described switching circuit comprise be connected in series with the main switch circuit between load and the power firestreak and be connected in series with load and the emergency service power connector end between the auxiliary switch circuit.Described switch driving circuit comprises its main switch drive circuit of controlling respectively and the auxiliary switch drive circuit that be subjected to that is connected with governor circuit respectively, and main switch drive circuit and auxiliary switch drive circuit output connect respectively main switch circuit and auxiliary switch circuit.
Wherein, described main switch circuit employing relay is switch element.It is switch element that described auxiliary switch circuit can adopt relay also can adopt controllable silicon, and described relay can adopt magnetic latching relay, also can be monostable relay.
A kind of concrete scheme is: described main switch circuit and auxiliary switch circuit are all take relay as switch element; Described auxiliary switch circuit relay is a single-pole single-throw(SPST relay, and the one tip side connects the emergency service power connector end, and another tip side is connected with the main switch circuit relay contact; The main switch circuit relay is a single-pole double throw relay, and its common end is connected with load end, and other two tip sides are connected with power firestreak L and auxiliary switch circuit relay one tip side respectively.
Another kind of concrete scheme is: described main switch circuit adopts relay, and the auxiliary switch circuit adopts controllable silicon.Described main switch circuit relay is a single-pole double throw relay, its common end is connected with load end, other two tip sides are contacted with power firestreak L and auxiliary switch circuit silicon controlled one end respectively, and the auxiliary switch circuit silicon controlled other end is connected with the emergency service power connector end.
Compared with prior art, the utility model beneficial effect is:
Two switching devices of described electronic switch employing are realized the time-delay switching, and the electric arc that produces in the time of can effectively avoiding single switch to switch is on the impact of whole circuit and load, and reliable operation is stablized; Use relay to be switch element in the described switch simultaneously, have the advantages that capacity is large, shock-resistant, antijamming capability is strong.
Description of drawings
Fig. 1 is that one of electronic switch described in the utility model is implemented schematic block diagram;
Fig. 2 is the first implementing circuit schematic diagram of electronic switch described in the utility model;
Fig. 3 is the second implementing circuit schematic diagram of electronic switch described in the utility model.
Embodiment
Understanding for the ease of those skilled in the art is described further the utility model below in conjunction with drawings and the specific embodiments.
Such as Fig. 1, switching circuit described in the utility model comprises power supply circuits, governor circuit, switching circuit, switch driving circuit, switching circuit comprises the main switch circuit that is connected in series with between load (A end) and the live wire (L end), and is connected in series with the auxiliary switch circuit between load (A end) and the emergency service power connector end (C end).Switch driving circuit comprises main switch drive circuit and the auxiliary switch drive circuit that is connected with governor circuit respectively and is subjected to its control, main switch drive circuit and auxiliary switch drive circuit output connect respectively main switch circuit and auxiliary switch circuit, governor circuit is by switch driving circuit control switch circuit working, and power supply circuits are the interlock circuit power supply.
Power supply circuits are connected in power firestreak L between zero-power line N, from the direct power taking of civil power.Power supply circuits can provide power supply for other functional circuit according to different supply power mode (such as resistance-capacitance depressurization, Switching Power Supply etc.).Described governor circuit also can according to different uses (such as: sound, photocontrol, infrared induction, remote control, program control, by key control etc.) intelligent control chip that adopts different transducer or communication element and single-chip microcomputers or be similar to single-chip microcomputer combines.
As shown in Figure 2, main switch circuit 1.1 adopts the single-pole double throw relay, this relay coil one end is connected with power supply VCC, simultaneously in parallel with the negative electrode of diode D1, the relay coil other end is in parallel with the anode of diode D1, be connected to simultaneously the collector electrode of NPN type triode Q1, triode Q1 grounded emitter, base stage is connected and is connected to governor circuit after the resistance R 1.Auxiliary switch circuit 1.2 is the single-pole single-throw(SPST relay, this relay coil one end is connected with power supply VCC, simultaneously in parallel with the negative electrode of diode D2, the relay coil other end is in parallel with the anode of diode D2, be connected to simultaneously the collector electrode of NPN type triode Q2, triode Q2 grounded emitter, base stage are connected and are connected to governor circuit after the resistance R 2.
The operation principle of the present embodiment is as follows:
After electronic switch powers on, power supply circuits are governor circuit and drive circuitry, main switch single-pole double throw relay is in the state of disjunction load (A end) and live wire (L end), UNICOM's auxiliary switch circuit, the auxiliary switch circuit relay is in closure state, load this moment (A end) is connected to emergency service power supply terminal (C end), when the needs fire emergency, the C termination enters the emergency service power supply, and load will be held Power supply and startup work by C; The C end is not powered under normal circumstances, electronic switch is in normally " standby " state of cutting out, after transducer (acoustic control, infrared or touch key-press) receives useful signal, be transferred to governor circuit, switch to live wire (L end) by the master control circuit controls main relay, connect with load end (A end), loaded work piece (for example illuminating lamp is bright), and the control auxiliary relay disconnects; After a period of time time-delay, then control first main relay by governor circuit and disconnect, delay adjustments is (after the caused electric arc of main relay disjunction fully discharges) after the time, controls the auxiliary switch relay closes again, and switch reenters " standby " operating state.
Circuit embodiment illustrated in fig. 3 and Fig. 2 are basic identical, in Fig. 3, only the auxiliary switch element shown in Fig. 2 and drive circuit are replaced with bidirectional triode thyristor element and drive circuit thereof.Among the embodiment, main switch circuit relay coil one end is connected with power supply VCC, simultaneously in parallel with the negative electrode of diode D1, this coil other end is in parallel with the anode of diode D1, be connected to simultaneously the collector electrode of triode Q1, triode Q1 grounded emitter is connected to governor circuit behind the base series resistor R1; The SCR control end is connected to governor circuit by optocoupler in the auxiliary switch circuit.The principle that the described embodiment of Fig. 3 realizes is consistent with Fig. 2 embodiment, does not repeat them here.
Above-described embodiment is the more excellent execution mode of the utility model; need to prove; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (10)
1. the electronic switch that can meet an urgent need by force and to start, comprise governor circuit, switching circuit, switch driving circuit, governor circuit is characterized in that by switch driving circuit control switch circuit working: described switching circuit comprise be connected in series with the main switch circuit between load and the power firestreak and be connected in series with load and the emergency service power connector end between the auxiliary switch circuit.
2. such as the described electronic switch of meeting an urgent need and starting by force of claim 1, it is characterized in that: described switch driving circuit comprises its main switch drive circuit of controlling respectively and the auxiliary switch drive circuit that be subjected to that is connected with governor circuit respectively, and main switch drive circuit and auxiliary switch drive circuit output connect respectively main switch circuit and auxiliary switch circuit.
3. such as the described electronic switch of meeting an urgent need and starting by force of claim 2, it is characterized in that: it is switch element that described main switch circuit adopts relay.
4. such as the described electronic switch of meeting an urgent need and starting by force of claim 3, it is characterized in that: it is switch element that described auxiliary switch circuit adopts relay.
5. such as the described electronic switch of meeting an urgent need and starting by force of claim 4, it is characterized in that: described auxiliary switch circuit adopts a single-pole single-throw(SPST relay, the one tip side connects the emergency service power connector end, and another tip side is connected with main switch circuit relay contact end; Main switch circuit adopts a single-pole double throw relay, and its common end is connected with load end, and other two tip sides are connected with power firestreak L and auxiliary switch circuit relay one tip side respectively.
6. the electronic switch of meeting an urgent need by force and to start as claimed in claim 5, it is characterized in that: described main switch circuit relay coil one end is connected with power supply VCC, simultaneously in parallel with the negative electrode of diode D1, this coil other end is in parallel with the anode of diode D1, be connected to simultaneously the collector electrode of triode Q1, triode Q1 grounded emitter is connected to governor circuit behind the base series resistor R1; Auxiliary switch circuit relay coil one end is connected with power supply VCC, simultaneously in parallel with the negative electrode of diode D2, this coil other end is in parallel with the anode of diode D2, is connected to simultaneously the collector electrode of triode Q2, triode Q2 grounded emitter is connected to governor circuit behind the base series resistor R2.
7. the electronic switch of meeting an urgent need by force and to start as claimed in claim 3, it is characterized in that: described main switch circuit adopts a single-pole double throw relay, and it is switch element that the auxiliary switch circuit adopts controllable silicon; Single-pole double throw relay common end is connected with load end, and other two tip sides are contacted with power firestreak L and auxiliary switch circuit silicon controlled one end respectively, and the controllable silicon other end is connected with the emergency service power connector end.
8. the electronic switch of meeting an urgent need by force and to start as claimed in claim 7, it is characterized in that: described main switch circuit relay coil one end is connected with power supply VCC, simultaneously in parallel with the negative electrode of diode D1, this coil other end is in parallel with the anode of diode D1, be connected to simultaneously the collector electrode of triode Q1, triode Q1 grounded emitter is connected to governor circuit behind the base series resistor R1; The SCR control end is connected to governor circuit by optocoupler in the auxiliary switch circuit.
9. such as the described electronic switch of meeting an urgent need and starting by force of any one among the claim 1-4, it is characterized in that: described relay is magnetic latching relay or monostable relay.
10. such as the described electronic switch of meeting an urgent need and starting by force of any one in the claim 1-6, it is characterized in that: also comprise the power supply circuits that are used to governor circuit and switching circuit that power supply is provided, described power supply circuits are connected between power firestreak L and the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354799 CN202679334U (en) | 2012-07-23 | 2012-07-23 | A electronic switch which can be forcedly started in emergency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354799 CN202679334U (en) | 2012-07-23 | 2012-07-23 | A electronic switch which can be forcedly started in emergency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679334U true CN202679334U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220354799 Expired - Lifetime CN202679334U (en) | 2012-07-23 | 2012-07-23 | A electronic switch which can be forcedly started in emergency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796121A (en) * | 2015-04-20 | 2015-07-22 | 陈涛 | Electronic switch |
-
2012
- 2012-07-23 CN CN 201220354799 patent/CN202679334U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796121A (en) * | 2015-04-20 | 2015-07-22 | 陈涛 | Electronic switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |