CN217282186U

CN217282186U - Arc leakage overvoltage flashing lamp circuit

Info

Publication number: CN217282186U
Application number: CN202220810927.1U
Authority: CN
Inventors: 文杰; 叶透; 张广西
Original assignee: Zhejiang Xia Xing Electronic Technology Ltd
Current assignee: Zhejiang Xia Xing Electronic Technology Ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-08-23
Anticipated expiration: 2032-04-07

Abstract

The utility model relates to an electric arc electric leakage excessive pressure flashing light circuit, including microcontroller, power and fault indication module, overvoltage signal collection module, surge protection module, tripping operation dropout module, earth leakage protection processing module, electric arc power module, microcontroller's input is connected respectively to overvoltage signal collection module's output, earth leakage protection processing module's output, surge protection module's output, microcontroller's input is connected respectively to microcontroller's output, tripping operation dropout module's input, the external electric arc power module of microcontroller. The utility model discloses electric arc electric leakage excessive pressure flashing light circuit has the protection comprehensively, the security performance is strong, artifical inspection maintenance efficiency is high advantage.

Description

Arc leakage overvoltage flashing lamp circuit

Technical Field

The utility model relates to an arc extinction electric leakage overvoltage protection technical field especially relates to an electric arc electric leakage excessive pressure flashing light circuit.

Background

The fault electric arc is a common potential safety hazard in an electric circuit, the high temperature and high heat generated by the fault electric arc easily ignite a circuit insulating layer to cause the circuit to be on fire, and if combustible substances exist near a fault point, the combustible substances are also easily ignited to cause a fire disaster. The existing arc protection circuit is usually used for protecting the line from overvoltage and arc faults, and when the overvoltage and the arc faults occur in the line, tripping is triggered. However, the existing arc protection circuit lacks the leakage protection function, when a leakage fault occurs in a circuit, a user cannot effectively prevent personal electric shock and death in a low-voltage and high-voltage power grid, so that the defects of incomplete protection and weak safety performance exist, and the existing arc protection circuit needs manual inspection and maintenance when overvoltage and arc fault occur, and the fault reason needs to be found out firstly for maintenance, so that the defect of low inspection and maintenance efficiency also exists.

Disclosure of Invention

In view of this, the utility model aims at providing an arc electric leakage overvoltage flashing light circuit that the protection is comprehensive, the security performance is strong and artifical inspection maintenance efficiency is high.

In order to realize above purpose, the utility model discloses a such electric arc electric leakage excessive pressure flashing light circuit, including microcontroller, power and fault indication module, overvoltage signal acquisition module, surge protection module, tripping operation dropout module, leakage protection processing module, electric arc power module, microcontroller's input is connected respectively to overvoltage signal acquisition module's output, leakage protection processing module's output, surge protection module's output, microcontroller's output is connected power and fault indication module's input, tripping operation dropout module's input respectively, the external electric arc power module of microcontroller.

Compared with the prior art, the circuit has the beneficial effects that: through addding earth leakage protection processing module, reached can effectually prevent the personal electric shock casualty accident in low voltage electric network, wherein, though unable complete effectual prevention personal electric shock casualty accident in high voltage electric network, but the security performance of electric network and equipment has been improved, it is comprehensive to have realized the protection, the advantage that the security performance is strong, secondly, this circuit has still set up power and fault indication module, when the circuit overvoltage appears, the electric leakage, when electric arc fault, fault indication module can remember the fault reason before tripping operation dropout, when manual inspection maintenance combined floodgate circular telegram, fault indication module can flicker corresponding pilot lamp and frequency, directly perceived reachs the fault reason, realize the efficient advantage of manual inspection maintenance.

The utility model discloses set up further to power and fault indication module including resistance R13 ~ R15, double-colored emitting diode LED1, emitting diode LED2, the ninth pin RC1/AN5 end, the eighth pin RC2/AN6 end of microcontroller IC1 are connected respectively to double-colored emitting diode LED 1's one end, the one end of resistance R15 is connected respectively to double-colored emitting diode LED 1's the other end, resistance R14's one end, the tenth pin RC0/AN4 end of microcontroller IC1 is connected to emitting diode LED 2's negative pole, the positive pole of emitting diode LED2 connects the one end of resistance R13, the high level is all connected to the other end of resistance R15, the other end of resistance R14, the other end of resistance R13.

The utility model further sets up to two-tone LED1 and sets up two kinds of flicker frequencies at least.

In the technical scheme, one indicator lamp of the double-color light-emitting diode LED1 is used as a power indicator lamp, when the indicator lamp is turned on, the indicator lamp shows a power-on state, the other indicator lamp is used as an overvoltage and leakage fault indicator lamp, when the circuit has overvoltage and leakage faults, the indicator lamp can memorize two fault flicker frequencies before tripping and tripping, when the circuit is manually checked, maintained, closed and electrified, the indicator lamp flickers corresponding to the fault frequencies to visually obtain fault reasons, the light-emitting diode LED2 is used as an arc fault indicator lamp, when the circuit has arc faults, the indicator lamp can memorize before tripping and tripping, and when the circuit is manually checked, maintained, closed and electrified, the indicator lamp flickers corresponding to the fault frequencies.

The utility model discloses further set up to overvoltage signal acquisition module including resistance R10 ~ R12, electrolytic capacitor C10, diode D4, resistance R10's one end is connecting resistance R11's one end, diode D4's positive pole respectively, and live wire L is connected to resistance R10's the other end, resistance R11's other end ground connection, diode D4's negative pole is connecting resistance R12's one end, electrolytic capacitor C10's positive pole, microcontroller IC 1's eleventh pin RA2/AN2 end respectively, resistance R12's the other end, electrolytic capacitor C10's negative pole all ground connection.

The technical scheme has the function of collecting overvoltage signals, and can trigger tripping when the collected voltage signals exceed the preset maximum value so as to protect the load and the safety of users.

The utility model is further arranged that the earth leakage protection processing module comprises resistors R1-R3, resistors R5-R6, capacitors C1-C3, capacitors C6-C9, zener diode ZD1, diac D1 and an earth leakage protection chip U1, the second pin OP + end of the earth leakage protection chip U1 is respectively connected with one end of the capacitor C3, one end of the capacitor C1 and one end of the resistor R1, the other end of the capacitor C3 and the first pin SE end of the earth leakage protection chip U1 are both grounded, the other end of the capacitor C1 is respectively connected with the third pin OP-end of the earth leakage protection chip U1, one end of the capacitor C2 and one end of the resistor R2, the other end of the resistor R1 is respectively connected with one end of the diac D1, one end of the resistor R3 and one end of the contact Z1, the other end of the resistor R2 is respectively connected with the other end of the diac D1, one end of the other end of the resistor R3 and the contact Z2, the other end of the contact Z1 and the other end of the contact Z2 are both externally connected with a leakage zero sequence transformer, the OS end of a fifth pin of the leakage protection chip U1 is respectively connected with one end of a capacitor C9 and the anode of a trip module diode D7, the DLY end of a sixth pin of the leakage protection chip U1 is respectively connected with one end of a capacitor C6, one end of a resistor R6 and the seventh pin AN7/RC3 end of the microcontroller IC1, the OA end of a seventh pin of the leakage protection chip U1 is connected with one end of a capacitor C7, the other end of the capacitor C2, the GND end of a fourth pin of the leakage protection chip U1, the other end of the capacitor C9, the other end of the capacitor C6, the other end of the resistor R6 and the other end of the capacitor C7 are all grounded, the VCC end of AN eighth pin of the leakage protection chip U1 is respectively connected with one end of a capacitor C8, the cathode of a voltage stabilizing diode ZD1 and the other end of a resistor R5, and the other end of the capacitor C8, The anodes of zener diodes ZD1 are all connected to ground.

The technical scheme has the function of collecting leakage current, and when the leakage current exceeds a certain set value, the tripping trip can be triggered to protect the safety of a user.

The utility model discloses set up further to trip tripping module and include diode D1-D2, diode D6-D8, resistance R7, electric capacity C5, zener diode ZD2, silicon controlled rectifier SCR, the anodal A end of silicon controlled rectifier SCR connects the negative pole of diode D1, the control utmost point G end of silicon controlled rectifier SCR connects the negative pole of diode D8, the one end of resistance R7, the positive pole of zener diode ZD2, the one end of electric capacity C5, the negative pole of diode D7 respectively, the positive pole of diode D8 connects the one end of contact DH-K, the other end external electric arc trip control signal of contact DH-K, the negative pole of diode D6 is connected to zener diode D2, the positive pole of diode D6 connects microcontroller IC 1's fifth pin RC5 end, the positive pole of diode D7 connects the fifth pin end OS of earth leakage protection chip U1, the one end of resistance R7, the one end of electric capacity C5, The cathode K end of the SCR and the anode of the diode D2 are both grounded.

The technical scheme has the advantages of few peripheral components and low circuit cost.

The utility model discloses further set up to surge protection module and include piezo-resistor RV1 ~ RV2, piezo-resistor RV1 connects in parallel at the both ends of live wire, zero line, contact M1's one end is still connected to piezo-resistor RV 1's one end, piezo-resistor RV 2's one end is still connected to piezo-resistor RV 1's the other end, contact M2's one end is connected to piezo-resistor RV 2's the other end, electric leakage release coil is all connected to contact M2's the other end, contact M1's the other end.

The technical scheme can effectively prevent the equipment such as a post-stage circuit, a release and the like from being damaged by the impact generated by overvoltage, electric leakage and arc faults.

The utility model discloses further set up to electric arc electric leakage excessive pressure flashing light circuit still includes experimental return circuit module, experimental return circuit module includes experimental button resistance R8, surge protection module is connected to experimental button resistance R8 'S one end, and the one end of contact S is connected to experimental button resistance R8' S the other end, the external experimental return circuit button of the other end of contact S.

The technical scheme can simulate the leakage fault, and when the test button is pressed, the leakage protection processing module can control the tripping module to trip, so that whether the leakage protection processing module can work normally or not is judged, and the leakage protection processing module is generally used for point inspection before use and in use.

The utility model discloses further set up to electric arc electric leakage excessive pressure flashing light circuit still includes the program and downloads the module, the program is downloaded the module and is connected with the microcontroller electricity.

The technical scheme has the function of programming the program, and can realize the writing of the written program into the microcontroller, so that the circuit is updated or adjusted and is in a suspended state when not being written in at ordinary times.

Drawings

Fig. 1 is a schematic block diagram of a circuit according to an embodiment of the present invention.

Fig. 2 is a schematic circuit diagram of the embodiment of the present invention, including a microcontroller, a power supply, a fault indication module, and an overvoltage signal collection module.

Fig. 3 is the circuit schematic diagram of the leakage protection processing module, the trip tripping module, the surge protection module and the test loop module of the embodiment of the present invention.

Fig. 4 is a circuit schematic diagram of the routine program download module of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-4, the embodiment of the present invention employs an arc leakage overvoltage flashing light circuit, which comprises a microcontroller 1, a power and fault indication module 2, an overvoltage signal acquisition module 3, a surge protection module 6, a trip release module 5, a leakage protection processing module 4, an arc power module 9, a test loop module 7, and a program download module 8, wherein, the input of microcontroller 1 is connected respectively to overvoltage signal acquisition module 3's output, earth leakage protection processing module 4's output, surge protection module 6's output, the input of power and fault indication module 2, the input of tripping module 5 are connected respectively to microcontroller 1's output, surge protection module 6's input is connected with test loop module 7, microcontroller 1 is connected with program download module 8 electricity, microcontroller 1 still external electric arc power module 9.

As shown in fig. 2, the power and fault indication module 2 mainly includes resistors R13-R15, a bi-color LED1, and a LED2, wherein one end of the bi-color LED1 is connected to a ninth pin RC1/AN5 end and AN eighth pin RC2/AN6 end of the microcontroller IC1, the other end of the bi-color LED1 is connected to one end of the resistor R15 and one end of the resistor R14, a cathode of the LED2 is connected to a tenth pin RC0/AN4 end of the microcontroller IC1, AN anode of the LED2 is connected to one end of the resistor R13, the other end of the resistor R15, the other end of the resistor R14, and the other end of the resistor R13 are connected to high levels, and the bi-color LED1 sets at least two flashing frequencies. In addition, the two-color light emitting diode LED1 is composed of green and yellow colors, the green light is a power indicator which shows the on state when it is lighted, the yellow light is a fault indicator which memorizes two fault flicker frequencies before tripping and tripping when the circuit has overvoltage and leakage faults, the yellow light flickers the corresponding fault frequency when the circuit is manually checked, maintained, switched on and powered, the first frequency flickers three times corresponding to overvoltage, the second frequency flickers five times corresponding to leakage fault, the light emitting diode LED2 is an arc fault indicator which is composed of red color, the red light memorizes the flicking frequency before tripping and the red light flickers the corresponding frequency when the circuit has arc fault, maintained and powered.

The overvoltage signal acquisition module 3 mainly comprises resistors R10-R12, AN electrolytic capacitor C10 and a diode D4, wherein one end of the resistor R10 is connected with one end of a resistor R11 and the anode of the diode D4 respectively, the other end of the resistor R10 is connected with a live wire L, the other end of the resistor R11 is grounded, the cathode of a diode D4 is connected with one end of the resistor R12, the anode of the electrolytic capacitor C10 and the eleventh pin RA2/AN2 end of the microcontroller IC1 respectively, and the other end of the resistor R12 and the cathode of the electrolytic capacitor C10 are grounded respectively.

As shown in fig. 3, the leakage protection processing module 4 mainly comprises resistors R1 to R3, resistors R5 to R6, capacitors C1 to C3, capacitors C6 to C9, a zener diode ZD1, a diac D1, and a leakage protection chip U1, wherein a second pin OP + terminal of the leakage protection chip U1 is connected to one terminal of the capacitor C1, and one terminal of the resistor R1, the other terminal of the capacitor C1 and a first pin SE terminal of the leakage protection chip U1 are all grounded, the other terminal of the capacitor C1 is connected to a third pin OP-terminal of the leakage protection chip U1, one terminal of the capacitor C1, and one terminal of the resistor R1, the other terminal of the resistor R1 is connected to one terminal of the diac D1, one terminal of the resistor R1, one terminal of the contact Z1, the other terminal of the resistor R1 is connected to the other terminal of the diac D1, the other terminal of the contact Z1, and the other terminal of the contact Z1, and the other terminal of the bidirectional trigger diode D1, and the other terminal of the leakage protection chip U1 are connected to the other terminal of the leakage protection chip U1, respectively, The other end of the contact Z2 is externally connected with a leakage zero sequence transformer, the OS end of a fifth pin of the leakage protection chip U1 is connected with one end of a capacitor C9 and the anode of a diode D7 of the trip tripping module 5, the DLY end of a sixth pin of the leakage protection chip U1 is connected with one end of a capacitor C6, one end of a resistor R6 and the seventh pin AN7/RC3 of the microcontroller IC1, the OA end of a seventh pin of the leakage protection chip U1 is connected with one end of a capacitor C7, the other end of a capacitor C2, the GND end of a fourth pin of the leakage protection chip U1, the other end of a capacitor C9, the other end of a capacitor C6, the other end of a resistor R6 and the other end of a capacitor C7 are all grounded, the VCC end of AN eighth pin of the leakage protection chip U1 is connected with one end of a capacitor C8, the cathode of a zener diode ZD1, one end of a resistor R5, the other end of a capacitor C8 and the anode of a zener diode ZD1 are all grounded.

The tripping and tripping module 5 mainly comprises diodes D1-D2, diodes D6-D8, a resistor R7, a capacitor C5, a voltage stabilizing diode ZD2 and a silicon controlled rectifier SCR, the anode A end of the silicon controlled SCR is connected with the cathode of the diode D1, the control electrode G end of the silicon controlled SCR is respectively connected with the cathode of the diode D8, one end of the resistor R7, the anode of the voltage stabilizing diode ZD2, one end of the capacitor C5 and the cathode of the diode D7, the anode of the diode D8 is connected with one end of the contact DH-K, the other end of the contact DH-K is externally connected with an arc tripping control signal, the cathode of the voltage stabilizing diode ZD2 is connected with the cathode of the diode D6, the anode of the diode D6 is connected with the fifth pin RC5 end of the microcontroller IC1, the anode of the diode D7 is connected with the fifth pin OS end of the leakage protection chip U1, and one end of the resistor R7, one end of the capacitor C5, the cathode K end of the silicon controlled SCR and the anode of the diode D2 are all grounded.

The surge protection module 6 mainly comprises piezoresistors RV 1-RV 2, wherein the piezoresistor RV1 is connected in parallel at two ends of a live wire and a zero wire, one end of the piezoresistor RV1 is also connected with one end of a contact M1, the other end of the piezoresistor RV1 is also connected with one end of a piezoresistor RV2, the other end of the piezoresistor RV2 is connected with one end of the contact M2, and the other end of the contact M2 and the other end of the contact M1 are both connected with a leakage release coil.

The test loop module 7 mainly comprises a test button resistor R8, one end of the test button resistor R8 is connected with the surge protection module 6, the other end of the test button resistor R8 is connected with one end of a contact S, and the other end of the contact S is externally connected with a test loop button.

As shown in fig. 4, the arc leakage overvoltage flashing light circuit further comprises a program downloading module 8, and the program downloading module 8 is electrically connected with the microcontroller 1.

The aforesaid does the utility model discloses scheme of electric arc electric leakage excessive pressure flashing light circuit embodiment, through addding leakage protection processing module, reached can effectually prevent the person and electrocute casualties accident in the low voltage electric wire netting, wherein, though unable completely effectual preventing the person electrocute casualties accident in the high voltage electric wire netting, but the security performance of electric wire netting and equipment has been improved, the protection is comprehensive, the advantage that the security performance is strong, secondly, this circuit has still set up power and fault indication module, overvoltage appears when the circuit, the electric leakage, when the electric arc trouble, fault indication module can be tripped off and remember the trouble reason before the dropout, when manual inspection maintenance combined floodgate circular telegram, fault indication module can flash corresponding pilot lamp and frequency, reach the trouble reason directly perceived, realize the efficient advantage of manual inspection maintenance.

In addition to the above embodiments, there are also other embodiments of the present invention, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and scope of the present invention, and those changes and modifications are equivalent to the technical solutions in the present patent, and then those corresponding changes and modifications are all within the scope of the appended claims.

Claims

1. An arc leakage overvoltage flashing lamp circuit, which is characterized in that: including microcontroller, power and fault indication module, overvoltage signal acquisition module, surge protection module, tripping module, earth leakage protection processing module, electric arc power module, microcontroller's input is connected respectively to overvoltage signal acquisition module's output, earth leakage protection processing module's output, surge protection module's output, microcontroller's input, tripping module's input is connected respectively to microcontroller's output, the external electric arc power module of microcontroller.

2. The arc leakage overvoltage flash lamp circuit of claim 1, wherein: the power supply and fault indication module comprises resistors R13-R15, a two-color light-emitting diode LED1 and a light-emitting diode LED2, one end of the two-color light-emitting diode LED1 is respectively connected with a ninth pin RC1/AN5 end and AN eighth pin RC2/AN6 end of the microcontroller IC1, the other end of the two-color light-emitting diode LED1 is respectively connected with one end of a resistor R15 and one end of a resistor R14, the negative electrode of the light-emitting diode LED2 is connected with a tenth pin RC0/AN4 end of the microcontroller IC1, the positive electrode of the light-emitting diode LED2 is connected with one end of a resistor R13, and the other end of the resistor R15, the other end of the resistor R14 and the other end of the resistor R13 are all connected with a high level.

3. The arc leakage overvoltage flash lamp circuit of claim 2, wherein: the bicolor LED1 is provided with at least two flashing frequencies.

4. The arc leakage overvoltage flash lamp circuit according to claim 1, 2 or 3, wherein: the overvoltage signal acquisition module comprises resistors R10-R12, AN electrolytic capacitor C10 and a diode D4, one end of the resistor R10 is connected with one end of a resistor R11 and the anode of the diode D4 respectively, the other end of the resistor R10 is connected with a live wire L, the other end of the resistor R11 is grounded, the cathode of the diode D4 is connected with one end of the resistor R12, the anode of the electrolytic capacitor C10 and the eleventh pin RA2/AN2 end of the microcontroller IC1 respectively, and the other end of the resistor R12 and the cathode of the electrolytic capacitor C10 are grounded respectively.

5. The arc leakage overvoltage flash lamp circuit according to claim 1, 2 or 3, wherein: the leakage protection processing module comprises resistors R1-R3, resistors R5-R6, capacitors C1-C3, capacitors C6-C9, a zener diode ZD1, a diac D1 and a leakage protection chip U1, wherein a second pin OP + end of the leakage protection chip U1 is connected with one end of the capacitor C1, one end of the capacitor C1 and one end of the resistor R1 respectively, the other end of the capacitor C1 and a first pin SE end of the leakage protection chip U1 are grounded, the other end of the capacitor C1 is connected with a third pin OP-end of the leakage protection chip U1, one end of the capacitor C1 and one end of the resistor R1 respectively, the other end of the resistor R1 is connected with one end of the diac D1, one end of the resistor R1 and one end of the contact Z1 respectively, the other end of the resistor R1 is connected with the other end of the diac D1, the other end of the resistor R1, one end of the contact Z1, and the contact 1 of the bidirectional trigger diode D1 respectively, The other ends of the contacts Z2 are all externally connected with a leakage zero sequence transformer, the OS end of the fifth pin of the leakage protection chip U1 is respectively connected with one end of a capacitor C9 and the anode of a tripping module diode D7, the DLY end of the sixth pin of the leakage protection chip U1 is respectively connected with one end of a capacitor C6, one end of a resistor R6 and a seventh pin AN7/RC3 end of the microcontroller IC1, the OA end of the seventh pin of the leakage protection chip U1 is connected with one end of a capacitor C7, the other end of the capacitor C2, the GND end of the fourth pin of the leakage protection chip U1, the other end of the capacitor C9, the other end of the capacitor C6, the other end of a resistor R6 and the other end of the capacitor C7 are all grounded, an eighth pin VCC terminal of the leakage protection chip U1 is respectively connected to one end of the capacitor C8, the cathode of the zener diode ZD1, and one end of the resistor R5, and the other end of the capacitor C8 and the anode of the zener diode ZD1 are both grounded.

6. The arc leakage overvoltage flash lamp circuit according to claim 1, 2 or 3, wherein: the tripping module comprises diodes D1-D2, diodes D6-D8, a resistor R7, a capacitor C5, a voltage stabilizing diode ZD2 and a silicon controlled SCR, wherein the anode A end of the silicon controlled SCR is connected with the cathode of a diode D1, the control electrode G end of the silicon controlled SCR is respectively connected with the cathode of the diode D8, one end of the resistor R7, the anode of the voltage stabilizing diode ZD2, one end of the capacitor C5 and the cathode of the diode D7, the anode of the diode D8 is connected with one end of a contact DH-K, the other end of the contact DH-K is externally connected with an arc tripping control signal, the cathode of the voltage stabilizing diode ZD2 is connected with the cathode of the diode D6, the anode of the diode D6 is connected with the fifth pin RC5 end of the microcontroller IC1, the anode of the diode D7 is connected with the fifth pin OS end of the leakage protection chip U1, one end of the resistor R7, one end of the capacitor C5 and the cathode K end of the silicon controlled SCR, The anodes of the diodes D2 are all connected to ground.

7. The arc leakage overvoltage flash lamp circuit according to claim 1, 2 or 3, wherein: surge protection module includes piezo-resistor RV1 ~ RV2, piezo-resistor RV1 connects in parallel at the both ends of live wire, zero line, contact M1's one end is still connected to piezo-resistor RV 1's one end, piezo-resistor RV 1's the other end is still connected piezo-resistor RV 2's one end, contact M2's one end is connected to piezo-resistor RV 2's the other end, contact M2's the other end, contact M1's the other end all connects the electric leakage release coil.

8. The arc leakage overvoltage flash lamp circuit according to claim 1, 2 or 3, wherein: the electric arc electric leakage overvoltage flashing lamp circuit further comprises a test loop module, the test loop module comprises a test button resistor R8, one end of the test button resistor R8 is connected with the surge protection module, the other end of the test button resistor R8 is connected with one end of the contact S, and the other end of the contact S is externally connected with a test loop button.

9. The arc leakage overvoltage flash lamp circuit according to claim 1, 2 or 3, wherein: the electric arc leakage overvoltage flashing lamp circuit further comprises a program downloading module, and the program downloading module is electrically connected with the microcontroller.