CN211151526U

CN211151526U - Safety power-off protector

Info

Publication number: CN211151526U
Application number: CN202020074098.6U
Authority: CN
Inventors: 龙兴五
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-07-31
Anticipated expiration: 2030-01-14

Abstract

The utility model discloses a safety power-off protector, include: the voltage stabilizing chip IC1, the induction module IC2, the MOS tube Q1, the MOS tube Q2, the triode Q3, the charging and discharging circuit and the relay J1; the input side circuit is connected to voltage regulation chip IC1 'S input, and the output is connected the input of induction module IC2, voltage regulation chip IC1 and induction module IC 2' S the equal earth connection of earthing terminal, induction module IC2 'S output passes through resistance R1 and connects MOS pipe Q1' S G end, MOS pipe Q1 'S S end ground connection, MOS pipe Q1' S D end passes through resistance R2 and connects MOS pipe Q2 'S D end, resistance R2 still connects the input of induction module IC2 through resistance R3, triode Q3' S base is connected to MOS pipe Q2 'S end, triode Q3' S collecting electrode ground connection. The utility model discloses only need the user in the several seconds of outage protector front station, the power protection begins normal work, and is safe convenient more.

Description

Safety power-off protector

Technical Field

The utility model belongs to the power-off protection field especially relates to a safety power-off protection ware.

Background

At present, after the condition of power failure and tripping occurs in the existing power utilization main switch, the existing power utilization main switch needs to be manually opened when a call comes, and part of switches without the power failure and tripping function can cause danger when the call comes. Some distribution boxes are provided with power-off protectors, but once power is cut off, professional personnel are required to operate the distribution boxes. Without operator anticipation, sudden operation of the power system can be a hazard to personal and property safety. Meanwhile, the peak current of the power system is very large at the moment of power restoration, certain damage can be caused to equipment, and especially, the equipment is greatly impacted by frequent intermittent power-on and power-off when a circuit fails, so that the equipment is seriously damaged.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a safety power-off protection ware, it need not the professional operation to restart the power after the outage, and the user only needs for a few seconds at the power-off protection ware front station, and power-off protection begins normal work.

In order to achieve the above object, the utility model adopts the following technical scheme:

a safety power-off protector comprising: the voltage stabilizing chip IC1, the induction module IC2, the MOS tube Q1, the MOS tube Q2, the triode Q3, the charging and discharging circuit and the relay J1; the input end of the voltage stabilizing chip IC1 is connected with an input side circuit, the output end is connected with the input end of the induction module IC2, the ground terminals of the voltage stabilizing chip IC1 and the sensing module IC2 are both grounded, the output terminal of the sensing module IC2 is connected with the G terminal of the MOS transistor Q1 through a resistor R1, the S end of the MOS transistor Q1 is grounded, the D end of the MOS transistor Q1 is connected with the D end of the MOS transistor Q2 through a resistor R2, the resistor R2 is also connected with the input end of the induction module IC2 through a resistor R3, the S end of the MOS transistor Q2 is connected with the base electrode of the triode Q3, the collector of the transistor Q3 is grounded, the emitter of the transistor Q3 is connected with the input end of the induction module IC2 through the coil of the relay J1, the emitter of the triode Q3 is also connected with the input end of a diode D5, and the output end of the diode D5 is connected with the input end of the induction module IC 2; the G end of MOS pipe Q2 passes through electric capacity C3 ground connection, MOS pipe Q2's G end still is connected with diode D6's input, diode D6's output is connected diode D5's input, diode D6's output still passes through resistance R5 and DE7 ground connection, diode D6 both ends are parallelly connected with resistance R4.

Preferably, the sensing module IC2 outputs an error signal once when power is supplied, and the sensing module IC2 is further configured to trigger a high level output after sensing a human body.

The optimization effect that this preferred scheme brought is at the response module IC2 trigger output high level after sensing the human body, leads to switching on relay J1 for relay J1 switch is closed, has avoided the total output to get the electricity suddenly and has caused potential danger.

Preferably, the input end of the voltage regulation chip IC1 is grounded through a capacitor C1, and the output end is grounded through a capacitor C2.

The optimization effect brought by the preferred scheme is that the grounding of the capacitor C1 and the grounding of the capacitor C2 play a role in filtering.

Preferably, the input side circuit comprises a master input terminal, a switch K1, a fuse F1, a transformer T1, a diode D1, a diode D2, a diode D3 and a diode D4, the input terminal is connected with the input terminal of the transformer T1 through the switch K1 and the fuse F1, the diode D1, the diode D2, the diode D3 and the diode D4 form a rectifier bridge, two alternating current input terminals of the rectifier bridge are respectively connected with the output terminal of the transformer T1, the positive output terminal of the rectifier bridge is connected with the input terminal of the voltage-stabilizing chip IC1, and the negative output terminal of the rectifier bridge is grounded.

More preferably, the total input is terminated with a voltage of 220V.

More preferably, the input end of the transformer T1 is connected to the total output end, and the total output end is connected to the load.

More preferably, the relay J1 is provided with two switches respectively connected between the input terminal and the total output terminal of the transformer T1 and between the base of the transistor Q3 and the ground.

Compared with the prior art, the beneficial effects of the utility model are that:

a safe outage protector can be after the block terminal cuts off the power supply, can not be in the circular telegram in the twinkling of an eye of power supply after the circular telegram, avoid causing certain harm to equipment, do not need the professional to remove the operation intercommunication simultaneously, only need the user in outage protector front station several seconds, the outage protection begins normal work, it is safe convenient more.

Drawings

Fig. 1 is a schematic circuit diagram of a safety power-off protector according to the present invention.

Detailed Description

For a better understanding of the present invention, the contents of the present invention will be further clarified below with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.

Examples

As shown in fig. 1, the utility model provides a safety power-off protector, include: the device comprises a voltage stabilizing chip IC1, an induction module IC2, a MOS tube Q1, a MOS tube Q2, a triode Q3, a charging and discharging circuit and a relay J1. In this embodiment, the voltage stabilizing chip IC1 is an IC7812 type voltage stabilizing chip, the sensing module IC2 is an SR602 type sensing module, the sensing module IC2 outputs an error signal every time when power is supplied, and the sensing module IC2 is further configured to sense a high level output by triggering after a human body is sensed. The input end of the voltage-stabilizing chip IC1 is grounded through a capacitor C1, and the output end is grounded through a capacitor C2.

The input end of a voltage stabilizing chip IC1 is connected with an input side circuit, the output end of the voltage stabilizing chip IC1 is connected with the input end of an induction module IC2, the grounding ends of the voltage stabilizing chip IC1 and the induction module IC2 are both grounded, the output end of the induction module IC2 is connected with the G end of an MOS tube Q1 through a resistor R1, the S end of the MOS tube Q1 is grounded, the D end of the MOS tube Q1 is connected with the D end of an MOS tube Q2 through a resistor R2, the resistor R2 is further connected with the input end of an induction module IC2 through a resistor R3, the S end of the MOS tube Q2 is connected with the base of a triode Q3, the collector of a triode Q3 is grounded, the emitter of the triode Q68642 is connected with the input end of the induction module IC 9 through a coil of a relay J5928, the emitter of a triode Q3 is further connected with; the G end of the MOS transistor Q2 is grounded through a capacitor C3, the G end of the MOS transistor Q2 is also connected with the input end of a diode D6, the output end of the diode D6 is connected with the input end of a diode D5, the output end of a diode D6 is also grounded through resistors R5 and DE7, and two ends of a diode D6 are connected with a resistor R4 in parallel. The induction module IC2 is used for detecting that a human body is conducted after approaching, and the MOS tubes Q1 and Q2 are both N-channel MOS tube switching circuits and have the characteristic of V_GSAnd will conduct above a certain value.

The input side circuit comprises a master input end, a switch K1, a fuse F1, a transformer T1, a diode D1, a diode D2, a diode D3 and a diode D4, wherein the input end is connected with the input end of a transformer T1 through the switch K1 and the fuse F1, the diode D1, the diode D2, the diode D3 and the diode D4 form a rectifier bridge, two alternating current input ends of the rectifier bridge are respectively connected with the output end of the transformer T1, the positive output end of the rectifier bridge is connected with the input end of a voltage stabilizing chip IC1, and the negative output end of the rectifier bridge is grounded. The total input is terminated with 220V. The switch K1 is a power-off switch, so that a user can manually turn off the switch K1 under the condition of need to realize the power-off of the main input end.

The input end of the transformer T1 is connected with the total output end, and the total output end is connected with the load. The relay J1 is provided with double switches which are respectively connected between the input terminal and the total output terminal of the transformer T1 and between the base of the triode Q3 and the ground line.

The state of the safety power-off protector in the use process is described from four conditions:

(1) when the total input end is electrified, the alternating current of the power grid is reduced to the alternating current of 15v through the transformer T1, the alternating current of 15v is converted into the direct current of 15v through the rectifier bridge formed by the diodes D1-D4, the capacitor C1 plays a role in filtering, and then the direct current is filtered through the capacitor C2 after the three-terminal voltage stabilization of the voltage stabilization chip IC1, so that the voltage of 12v is obtained. At this time, the MOS transistor Q1, the MOS transistor Q2 and the triode Q3 are all in a cut-off state, the switch of the relay J1 is not attracted, at this time, the capacitor C3 and the resistor R4 form a charging circuit, the resistor R4 charges the capacitor C3, when the voltage at the G terminal of the MOS transistor Q2 reaches a certain value (2V in this embodiment), the MOS transistor Q2 is turned on, the resistor R5 supplies power to the light-emitting secondary light DE7 through a voltage reduction resistor, the light-emitting secondary light DE7 emits light normally, and the resistor R5 supplies power to the light-emitting diode DE7 to enable the light-emitting diode DE7 to emit light.

(2) When the power grid fails and the main input end loses power, all elements of the circuit can not work normally and are in a stop working state at the moment.

(3) After the power grid is powered off to normal power supply, the total input end is powered on, the induction module IC2 has primary error signal output, the MOS tube Q1 is switched on, the MOS tube Q2 is switched off, and the base level of the triode Q3 is not switched on, so that the switch of the relay J1 is not attracted.

(4) After the electric wire netting was by outage to normal power supply, total input is electrified, and induction module IC2 detects the human body and triggers output high level after being close to, MOS pipe Q1's G end is the high level promptly, voltage regulation chip IC1 steady voltage output 12V voltage, MOS pipe Q1, MOS pipe Q2 works in the short time, triode Q3's base level ground connection, relay J1 is in long-time actuation state under the condition that does not have the power failure this moment, luminous second grade light DE7 extinguishes, diode D6 is in the short time with electric capacity C3's voltage drop.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A safety power-off protector, comprising: the voltage stabilizing chip IC1, the induction module IC2, the MOS tube Q1, the MOS tube Q2, the triode Q3, the charging and discharging circuit and the relay J1; the input end of the voltage stabilizing chip IC1 is connected with an input side circuit, the output end is connected with the input end of the induction module IC2, the ground terminals of the voltage stabilizing chip IC1 and the sensing module IC2 are both grounded, the output terminal of the sensing module IC2 is connected with the G terminal of the MOS transistor Q1 through a resistor R1, the S end of the MOS transistor Q1 is grounded, the D end of the MOS transistor Q1 is connected with the D end of the MOS transistor Q2 through a resistor R2, the resistor R2 is also connected with the input end of the induction module IC2 through a resistor R3, the S end of the MOS transistor Q2 is connected with the base electrode of the triode Q3, the collector of the transistor Q3 is grounded, the emitter of the transistor Q3 is connected with the input end of the induction module IC2 through the coil of the relay J1, the emitter of the triode Q3 is also connected with the input end of a diode D5, and the output end of the diode D5 is connected with the input end of the induction module IC 2; the G end of MOS pipe Q2 passes through electric capacity C3 ground connection, MOS pipe Q2's G end still is connected with diode D6's input, diode D6's output is connected diode D5's input, diode D6's output still passes through resistance R5 and luminous second grade light DE7 ground connection, diode D6 both ends are parallelly connected with resistance R4.

2. The safety power-off protector as claimed in claim 1, wherein the sensing module IC2 outputs an error signal once every time power is supplied, and the sensing module IC2 is further configured to trigger a high level output after sensing a human body.

3. The safety power-off protector as claimed in claim 1, wherein the input terminal of the voltage-stabilizing chip IC1 is grounded through a capacitor C1, and the output terminal is grounded through a capacitor C2.

4. The safety power-off protector as claimed in claim 1, wherein the input side circuit comprises a main input terminal, a switch K1, a fuse F1, a transformer T1, a diode D1, a diode D2, a diode D3 and a diode D4, the input terminal is connected with the input terminal of the transformer T1 through the switch K1 and the fuse F1, the diode D1, the diode D2, the diode D3 and the diode D4 form a rectifier bridge, two ac input terminals of the rectifier bridge are respectively connected with the output terminal of the transformer T1, the positive output terminal of the rectifier bridge is connected with the input terminal of the voltage-stabilizing chip IC1, and the negative output terminal of the rectifier bridge is grounded.

5. A safety against power outages protector as claimed in claim 4, wherein the total input is terminated at 220V.

6. The safety power-off protector as claimed in claim 4, wherein the input terminal of the transformer T1 is connected to the total output terminal, and the total output terminal is connected to the load.

7. The safety power-off protector as claimed in claim 6, wherein the relay J1 is provided with two switches respectively connected between the input terminal and the total output terminal of the transformer T1 and between the base of the transistor Q3 and the ground.