CN209375251U - A line power-taking device suitable for a new type of externally applied fault indicator - Google Patents

Abstract

The utility model provide it is a kind of suitable for it is novel it is outer apply the route electricity getting device of fault detector, including take electromagnet core and power-supply circuit；Taking electromagnet core includes the semicircle magnetic core with upper edge and the U-shaped magnetic core with lower edge, and upper edge and lower edge face contact, electricity taking coil are wound on the lowest part of U-shaped magnetic core, and electricity taking coil connection takes electrical lead；Power-supply circuit includes dual-protection circuit; the electric energy that electricity taking coil obtains fills to protect after circuit via dual-protection circuit, full bridge rectifier, filter circuit, initial start-up circuit and super appearance respectively inputs to system by linear power supply; the active and standby switching mutually cut circuit and complete main power supply, accumulation power supply circuit generate the power supply for being suitable for system.The electricity getting device of the utility model takes electromagnet core processing technology thereof simple, at low cost；Power-supply circuit can guarantee that the electric energy taken out can work as requested and operate normally with system；Power-supply circuit realizes that power supply works according to ad hoc fashion by component, and element is simple and reliable, and debugging is convenient.

Description

A line power-taking device suitable for a new type of externally applied fault indicator

technical field

The utility model relates to the field of line power taking, in particular to a line power taking device suitable for a new type of external fault indicator.

Background technique

At present, the fault indicator acquisition unit requires TA to be powered and supplemented by a supercapacitor as the main power supply, and a non-rechargeable battery with an energy density not lower than that of a lithium battery as a backup power supply. The main power supply and the backup power are independent of each other. When the main power supply cannot maintain the full function of the device, the backup power is automatically turned on. When the main power supply is restored, it will automatically switch back to the main power supply for power supply. When the super capacitor is fully charged, it should be able to independently maintain the full function of the device for not less than 12 hours. When the line load current is not less than 10A, the TA should be able to meet the full-function working requirements of the device within 5s of taking power. When the line load current is lower than 10A and the supercapacitor loses its power supply capability, the device should at least be able to judge the short-circuit fault, collect the load current regularly, and upload it to the collection unit.

The existing point-taking device comprises an electromagnetic core part and a power-taking circuit part. The existing electromagnetic cores generally use permalloy or silicon steel sheets with a certain width of 0.1-0.2mm thick, which are wound into a thicker torus, and then symmetrically cut from the middle, and then the cut surface is polished. So that the two parts that are cut can be fully and reliably contacted. In the existing circuits, the electric energy taken out by the power-taking coil is generally rectified and filtered through a transient protection circuit, and then supplied to the system through a step-up or step-down circuit. It is difficult to fully satisfy the initial line load current of not less than 10A. The full function of the device can be satisfied within 5 seconds of power extraction, and the energy of the power acquisition is used first according to normal conditions. When the power cannot be acquired, the supercapacitor is used to store power. When the supercapacitor cannot supply energy, the power of the backup battery is used last. logic.

The existing electromagnetic core part has complex structure, difficult processing and high cost; the existing electric circuit part has unsatisfactory circuit operation and cannot meet the use requirements.

Utility model content

The purpose of this utility model is to provide a line power-taking device suitable for a new type of externally applied fault indicator, which is used to solve the problem of complex structure, difficult processing, high cost and the existing power-taking circuit part in the prior art. The problem of the unsatisfactory operation of the circuit.

In order to achieve the above object, the utility model provides the following technical solutions:

A line power-taking device suitable for a new type of externally applied fault indicator, including an electromagnetic core and a power-taking circuit;

The electromagnetic core includes a semicircular magnetic core with an upper edge and a U-shaped magnetic core with a lower edge, the upper edge is in contact with the lower edge, and the electric coil is wound at the lowest point of the U-shaped magnetic core. The power-taking coil is connected to the power-taking lead wire;

The power-taking circuit includes a double protection circuit, and the electric energy obtained by the power-taking coil passes through the double protection circuit, the full-bridge rectifier circuit, the filter circuit, the initial start-up circuit and the super-capacity charging and protection circuit respectively, and then is input to the system through a linear power supply. After the active power supply circuit completes the switching of the main and standby power supplies through the main and standby switching circuits, it generates power suitable for the system.

Wherein, the double protection circuit includes a transient overvoltage protection circuit and a voltage limiting protection circuit.

Wherein, the power-taking coil is connected in parallel with a transient overvoltage protection circuit, and the transient overvoltage protection circuit includes a parallel connection of a piezoresistor and a TVS tube.

Wherein, the power-taking coil is connected in parallel with a voltage-limiting protection circuit, and the voltage-limiting protection circuit includes a silicon controlled rectifier connected in parallel with the power-taking coil, and two sixth zener diodes and eighth zener diodes connected with the fourth After the resistors are connected in series, the power-taking coils are connected in parallel.

Wherein, the power-taking coil is connected in parallel with a full-bridge rectifier circuit, and the full-bridge rectifier circuit includes a first diode, the cathode of the first diode is connected to the cathode of the fifth diode, and the fifth and second diodes The anode of the pole tube is connected to the cathode of the eighth diode, the anode of the eighth diode is connected to the anode of the seventh diode, and the two ends of the power-taking coil are respectively connected to the eighth diode The cathode of the tube is connected to the anode of the fifth diode and the cathode of the seventh diode is connected to the anode of the first diode, the anode of the eighth diode is connected to the seventh diode The positive ground wire of the tube.

Wherein, the filter circuit includes a third resistor connected to the cathode of the first diode and the cathode of the fifth diode, the third resistor is connected in series with the first capacitor and the fourth capacitor connected in parallel, and the first A capacitor and the fourth capacitor are grounded.

Wherein, the initial startup circuit includes a third voltage detection chip, the voltages of the first capacitor and the fourth capacitor flow to the input terminal of the third voltage detection chip and the anode of the fourth diode, and the first The output terminals of the three voltage detection chips are connected to the first pin of the sixth MOS transistor through the fifth resistor, the second pin of the sixth MOS transistor is connected to the first pin of the third MOS transistor, and the sixth MOS transistor The second pin of the third MOS transistor is connected to the third pin of the third MOS transistor and the cathode of the fourth diode through the first resistor, and the second pin of the third MOS transistor is connected to the ground wire through the sixth capacitor, so The third voltage detection chip is connected to the ground wire.

Wherein, the super-capacity charging and protection circuit includes a first voltage detection chip, the anode of the fourth diode and the input end of the third voltage detection chip are connected to the input end of the first voltage detection chip, the second resistor and the third pin of the first MOS tube, the output end of the first voltage detection chip is respectively connected to the second pin of the twenty-third MOS tube and the second pin of the seventh MOS tube through the sixth resistor and the first pin of the fourth MOS transistor, the second pin of the fourth MOS transistor is respectively connected to the second resistor and the first pin of the first MOS transistor, and the second pin of the first MOS transistor The pins are respectively connected to the fifth capacitor and the seventh capacitor connected in parallel, and the input end of the sixth voltage detection chip, the output end of the sixth voltage detection chip is connected to the first pin of the seventh MOS transistor, and the first voltage detection chip , the third pin of the twenty-third transistor, the third pin of the seventh MOS transistor, the sixth voltage detection chip, the fifth capacitor, and the seventh capacitor are respectively connected to a ground wire.

Wherein, the energy storage power supply circuit includes a second voltage detection chip, the second pin of the twenty-third electrical MOS transistor and the sixth capacitor are connected to the input end of the second voltage detection chip and the anode of the eleventh diode , the second pin of the second electric MOS transistor, the seventh capacitor and the fifth capacitor connected in parallel are connected to the anode of the ninth diode, and the anode of the eleventh diode is connected to the ninth diode After the anode of the positive pole is connected, connect the sixth pin of the fifth voltage detection chip and the ninth pin of the fifth voltage detection chip, the ninth pin is connected with a first inductor, and the output terminal of the second voltage detection chip The first pin of the Schottky array is connected to the first pin of the Schottky array through the twenty-first diode, and the second pin of the Schottky array is connected to the first pin of the fifth voltage detection chip through the twenty-fifth resistor. and the twenty-seventh resistor are connected to the ground wire, the eighth resistor and the ninth resistor are connected in series between the second pin and the third pin of the fifth voltage detection chip, and the third resistor of the fifth voltage detection chip The pins are connected to the ground wire through the tenth resistor, and the tenth pin, the eighth pin and the fifth pin of the fifth voltage detection chip are all connected to the ground wire.

Wherein, the main-standby mutual switching circuit includes a second diode, and the voltage output by the super-capacity charging and protection circuit is input into the input terminal of the fourth power chip through the second diode, and the voltage of the fourth power chip is The output end is connected in parallel with the energy storage power supply circuit and the battery through the third diode, and the battery is connected to the input end of the ninth power chip through the twelfth diode, and the ninth power chip's The output terminal is connected in parallel with the energy storage power supply circuit, the battery, the ninth power supply chip, and the fourth power supply chip are connected to the ground wire, the output terminal of the fourth power supply chip is connected to the second diode The positive electrode is connected to the ground wire via the third capacitor, and the second capacitor of the ground wire is connected in parallel between the energy storage power supply circuit and the output end of the ninth power chip.

The beneficial effects of the above-mentioned technical solution of the utility model are as follows:

In the above scheme, the manufacturing process of the electromagnetic core of the power-taking device of the present utility model is simple and the cost is low; the power-taking circuit can ensure that the extracted electric energy can work according to the requirements and ensure the normal operation of the system; the power-taking circuit The power supply works in a specific way through the components, the components are simple and reliable, and the debugging is convenient.

Description of drawings

Fig. 1 is a structural schematic diagram of an electromagnetic core of a line power taking device suitable for a new type of externally applied fault indicator;

Fig. 2 is a circuit diagram of a power taking circuit of a line power taking device suitable for a new type of externally applied fault indicator;

Fig. 3 is a circuit diagram of a power-taking coil, a transient overvoltage protection circuit, a voltage-limiting protection circuit, a full-bridge rectifier circuit and a filter circuit of a line power-taking device suitable for a new type of externally applied fault indicator;

Fig. 4 is a circuit diagram of a filter circuit, an initial start-up circuit, an overcapacity charge protection circuit and an energy storage power supply circuit of a line power-taking device suitable for a new type of external fault indicator;

Fig. 5 is a circuit diagram of an overcapacity charging and protection circuit, an energy storage power supply circuit, and an active-standby mutual switching circuit of a line power-taking device suitable for a new type of externally applied fault indicator.

Reference signs:

1. Semi-circular magnetic core; 2. U-shaped magnetic core; 3. Power-taking coil; 4. Power-taking lead wire; 11. Power-taking coil; 12. Transient overvoltage protection circuit; 13. Voltage limiting protection circuit; 14 1. Full-bridge rectifier circuit; 15. Filter circuit; 16. Initial startup circuit; 17. Supercapacity charging and protection circuit; 18. Energy storage power supply circuit;

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The utility model aims at the problems of complex structure, difficult processing, high cost and unsatisfactory circuit operation of the existing power-taking circuit part of the existing electromagnetic core part, and provides a circuit power-taking suitable for a new type of externally applied fault indicator. device.

As shown in Figures 1-5, the embodiment of the present invention provides a line power-taking device suitable for a new type of externally applied fault indicator, including an electromagnetic core 1 and a power-taking circuit;

The magnetic core 1 includes a semicircular magnetic core 1 with an upper edge and a U-shaped magnetic core 2 with a lower edge, the upper edge is in contact with the lower edge, and the electric coil 3 is wound around the U-shaped magnetic core. At the lowest point of 2, the power-taking coil 3 is connected to the power-taking lead wire 4;

The power-taking circuit includes a double protection circuit, and the electric energy obtained by the power-taking coil 3 passes through the double protection circuit, the full-bridge rectifier circuit 14, the filter circuit 15, the initial start-up circuit 16 and the super-capacity charging and protection circuit 17 respectively, and then passes through the linear power supply Input to the system, the energy storage power supply circuit 18 completes switching of the main and standby power supplies through the main and standby switching circuit 19 to generate power suitable for the system.

The electromagnetic core 1 of the utility model adopts 1J85 permalloy strips to form the semicircular magnetic core 1 with the upper edge and the U-shaped magnetic core 2 with the lower edge and the grinding process of the contact surface formed by punching and forming of the mold. . The semicircular magnetic core 1 and the U-shaped magnetic core 2 have a thickness of 2 mm and a width of 10 mm. The power-taking coil 3 is wound at the lowest point of the U-shaped magnetic core 2, which can not only reduce the difficulty of processing, but also save material costs and avoid the cutting process. The electric coil 3 provides a suitable space, and the edges of the upper and lower parts increase the contact surface, thereby increasing the magnetic flux capacity, reducing the complexity of the structure due to the closing accuracy of the contact surface, and reducing the amount of permalloy used. When an alternating current passes through the electromagnetic core 1, most of the magnetic flux forms an upper closed loop through the electromagnetic core 1 wound with the induction coil 3, thereby generating an induced voltage on the electrical coil 3, which can provide energy.

As shown in 2-3, the dual protection circuit includes a transient overvoltage protection circuit 12 and a voltage limiting protection circuit 13 .

Wherein, the power-taking coil 3 is connected in parallel with a transient overvoltage protection circuit 12, and the transient overvoltage protection circuit 12 includes a parallel connection of a piezoresistor VR1 and a TVS transistor VD1. The power-taking coil 3 is composed of a coil L_CT.

Wherein, the power-taking coil 3 is connected in parallel with a voltage-limiting protection circuit 13, and the voltage-limiting protection circuit 13 includes a thyristor Q2 connected in parallel with the power-taking coil 3, two connected sixth zener diodes D6 and eighth The Zener diode D8 is connected in series with the fourth resistor R4 and connected in parallel with the power-taking coil 3 . When the instantaneous value of the voltage exceeds 7V, the bidirectional voltage regulator composed of the sixth zener diode D6 and the eighth zener diode D8 is turned on, and the voltage is applied to the trigger terminal of the thyristor Q2, and the thyristor Q2 is turned on, Play the role of pressure limiting protection.

Wherein, the power-taking coil 3 is connected in parallel with a full-bridge rectifier circuit 14, and the full-bridge rectifier circuit 14 includes a first diode D1, and the cathode of the first diode D1 is connected to the cathode of the fifth diode D5 , the anode of the fifth diode D5 is connected to the cathode of the eighth diode D8, the anode of the eighth diode D8 is connected to the anode of the seventh diode D7, and the power-taking coil 3 The two ends are respectively connected to the cathode of the eighth diode D8 and the anode of the fifth diode D5 and the cathode of the seventh diode D7 and the anode of the first diode D1, so The anode of the eighth diode D8 and the anode of the seventh diode D7 are grounded.

Wherein, the filter circuit 15 includes a third resistor R3 connected to the cathode of the first diode D1 and the cathode of the fifth diode D5, the third resistor R3 is connected in parallel with the first capacitor C1 and the fourth The capacitor C4 is connected in series, and the first capacitor C1 and the fourth capacitor C4 are grounded.

As shown in Figure 2 and Figure 4, wherein the initial start-up circuit 16 includes a third voltage detection chip U3, the voltage of the first capacitor C1 and the fourth capacitor C4 flows to the third voltage detection chip The input terminal of U3 and the anode of the fourth diode D4, the output terminal of the third voltage detection chip U3 is connected to the first pin of the sixth MOS transistor through the fifth resistor R5, and the second pin of the sixth MOS transistor The pin is connected to the first pin of the third MOS transistor, and the second pin of the sixth MOS transistor is connected to the third pin of the third MOS transistor and the cathode of the fourth diode D4 through the first resistor R1 , the second pin of the third MOS transistor is connected to the ground line through the sixth capacitor C6, and the third voltage detection chip U3 is connected to the ground line.

When the voltage on the filter capacitor is greater than 5.0V, the output of the third voltage detection chip U3 drives the sixth MOS transistor to conduct through the fifth resistor R5, and pulls the driving pole of the third MOS transistor connected to the pull-up first resistor R1 Low, the third MOS transistor is turned on, and the voltage starts to charge the sixth capacitor C6 through the fourth diode D4 and the third MOS transistor, because the capacitor charging will pull down the voltage of the second pin of the third voltage detection chip U3 , the output of the third voltage detection chip U3 is cut off, and the charging is turned off. When the voltage rises to 5.0V, the charging starts, and when the charging drops below 5.0V, the charging is turned off, and the pulsating charging is realized repeatedly until the charging is completed.

As shown in Fig. 2, Fig. 4 and Fig. 5, wherein, the super-capacity charging and protection circuit 17 includes a first voltage detection chip U1, the anode of the fourth diode D4 and the third voltage detection chip U3 The input terminal of the first voltage detection chip U1 is connected to the input terminal of the first voltage detection chip U1, the second resistor R2 and the third pin of the first MOS transistor Q1, and the output terminals of the first voltage detection chip U1 are respectively connected to each other through the sixth resistor R6 The second pin of the twenty-third MOS transistor, the second pin of the seventh MOS transistor, and the first pin of the fourth MOS transistor Q4, the second pin of the fourth MOS transistor Q4 is respectively connected to the The second resistor R2 and the first pin of the first MOS transistor Q1, the second pin of the first MOS transistor Q1 are respectively connected to the fifth capacitor C5 and the seventh capacitor C7 connected in parallel, and the input of the sixth voltage detection chip U6 terminal, the output terminal of the sixth voltage detection chip U6 is connected to the first pin of the seventh MOS transistor Q7, the first voltage detection chip U1, the third pin of the twenty-third electric MOS transistor Q23, The third pin of the seventh MOS transistor Q7, the sixth voltage detection chip U6, the fifth capacitor C5 and the seventh capacitor C7 are respectively connected to the ground.

When the capacitor voltage is greater than 5.6V, the first voltage detection chip U1 outputs a voltage, and the voltage is applied to the driving pole of the fourth MOS transistor Q4 through the sixth resistor R6, and the fourth MOS transistor Q4 is turned on and grounded, and the pull-up connected to the first The driving pole of the first MOS transistor Q1 of the second resistor R2 is pulled low, the first MOS transistor Q1 is turned on, and starts to charge the super fifth capacitor C5 and the seventh capacitor C7. Due to the charging of the super capacitor, the voltage drops, making it less than 5.6 V, the output of the first voltage detection chip U1 is turned off, and the first MOS transistor Q1 of the charging switch is turned off to realize pulse charging. In addition, when the charging voltage of the supercapacitor is greater than 2.7V, the sixth voltage detection chip U6 starts to output, the seventh MOS transistor Q7 is turned on, and the driving pole of the fourth MOS transistor Q4 is pulled down, the fourth MOS transistor Q4 is turned off, and the fourth MOS transistor Q4 is pulled up. The second resistor R2 pulls the driving pole of the first MOS transistor Q1 high, and the first MOS transistor Q1 is turned off to realize the protection of the charging voltage. At the same time, the C_ON/OFF signal is applied to the driving pole of the thyristor Q2 through the sixteenth resistor. When C_ON/OFF is high, the third MOS transistor is turned on, and the driving pole of the fourth MOS transistor Q4 is pulled down, thereby turning off Super charging.

Wherein, the energy storage power supply circuit 18 includes a second voltage detection chip U2, and the second pin of the twenty-third electric MOS transistor Q23 is connected to the input terminal of the second voltage detection chip U2 and the sixth capacitor C6. The anode of the eleventh diode D11, the second pin of the second electric MOS transistor, the seventh capacitor C7 and the fifth capacitor C5 connected in parallel are connected to the anode of the ninth diode D9, the The anode of the eleventh diode D11 is connected to the anode of the ninth diode D9 and then connected to the sixth pin of the fifth voltage detection chip U5 and the ninth pin of the fifth voltage detection chip U5. The first inductor L1 is connected to the pin, and the output end of the second voltage detection chip U2 is connected to the first pin of the Schottky array D13 through the twenty-first diode D21, and the first pin of the Schottky array D13 is The two pins are respectively connected to the first pin of the fifth voltage detection chip U5 and the twenty-seventh resistor R27 to the ground wire through the twenty-fifth resistor R25, and the second pin of the fifth voltage detection chip U5 Connect the eighth resistor R8 and the ninth resistor R9 in series between the third pin and the third pin, the third pin of the fifth voltage detection chip U5 is connected to the ground wire through the tenth resistor R10, and the fifth voltage detection chip U5 The tenth pin, the eighth pin and the fifth pin are all connected to the ground.

When the supercapacitor and backup battery BT1 are out of power and the system is initially powered on, the electricity obtained by the system will first charge the sixth capacitor C6, and when the voltage of the sixth capacitor C6 reaches 3.6V, the second voltage detection chip U2 outputs the voltage, and the voltage is passed through the first Twenty-one diodes D21 and D13 are applied to the fifth power supply chip for energy management. The voltage of the sixth capacitor C6 passes through the input pole of the input terminal of the fifth voltage detection chip U5, and the chip starts to work. When the super capacitor needs to be discharged, the super capacitor The voltage is input to the fifth voltage detection chip U5 through the ninth electrode to discharge the supercapacitor.

As shown in Fig. 2 and Fig. 5, wherein, the main-standby mutual switching circuit 19 includes a second diode D2, and the voltage output by the super-capacity charging and protection circuit 17 is input into the second diode D2 through the second diode D2. The input terminal of the four power supply chip U4, the output terminal of the fourth power supply chip U4 is connected in parallel via the third diode D3 and the energy storage power supply circuit 18 and the battery BT1 through the linear power supply, and the battery BT1 is connected through the tenth diode D3 Two diodes D12 are connected to the input end of the ninth power chip U9, the output end of the ninth power chip U9 is connected in parallel with the energy storage power circuit 18, the battery BT1, the ninth power chip U9, the The fourth power chip U4 is connected to the ground wire, the output terminal of the fourth power chip U4 and the anode of the second diode D2 are connected to the ground wire via the third capacitor C3, and the energy storage power circuit 18 and the first The second capacitor C2 of the ground wire is connected in parallel between the output ends of the nine power supply chips U9. Design and complete the entire CT power supply system. Among them, different voltage levels are used to automatically complete the mutual switching. The main power adopts 3.6V, which is stepped down by a diode, and connected in parallel with the energy storage power supply of 3.4V and the battery BT1 power supply of 3.3V. Sequential work is realized through voltage levels from high to low.

In the above scheme, the manufacturing process of the electromagnetic core of the power-taking device of the present utility model is simple and the cost is low; the power-taking circuit can ensure that the extracted electric energy can work according to the requirements and ensure the normal operation of the system; the power-taking circuit The power supply works in a specific way through the components, the components are simple and reliable, and the debugging is convenient.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "one end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the present utility model, it should be noted that unless otherwise specified and limited, the terms "provided with" and "connected" should be interpreted in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediary. Fixed connections can be common technical solutions such as welding, screwing and tightening. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The above is a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. And retouching should also be regarded as the protection scope of the present utility model.

Claims (10)

1. a kind of suitable for the novel outer route electricity getting device for applying fault detector, which is characterized in that including taking electromagnet core and taking Circuit；

It is described that take electromagnet core include the semicircle magnetic core with upper edge and the U-shaped magnetic core with lower edge, the upper edge with it is described Lower edge face contact, electricity taking coil are wound on the lowest part of U-shaped magnetic core, and electricity taking coil connection takes electrical lead；

The power-supply circuit includes dual-protection circuit, the electric energy that the electricity taking coil obtains respectively via dual-protection circuit, Full bridge rectifier, filter circuit, initial start-up circuit and super appearance, which fill to protect after circuit, inputs to system, energy storage by linear power supply The power supply for being suitable for system is generated after the active and standby switching for mutually cutting circuit completion main power supply of power circuit diameter.

2. being suitable for the novel outer route electricity getting device for applying fault detector as described in claim 1, which is characterized in that described Dual-protection circuit includes transient overvoltage protection circuit and pressure limited protection circuit.

3. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 2, which is characterized in that described Electricity taking coil parallel connection transient overvoltage protects circuit, and the transient overvoltage protection circuit includes varistor and TVS pipe in parallel.

4. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 3, which is characterized in that described Electricity taking coil parallel connection pressure limited protection circuit, the pressure limited protection circuit include it is in parallel with the electricity taking coil silicon-controlled, 2 are right The 6th zener diode connect and the 8th the zener diode electricity taking coil in parallel after connecting with the 4th resistance.

5. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 4, which is characterized in that described Electricity taking coil parallel connection full bridge rectifier, the full bridge rectifier include first diode, the cathode of the first diode It is connected with the cathode of the 5th diode, the anode of the 5th diode is connected with the cathode of the 8th diode, and the described 8th 2 The anode of pole pipe is connected with the anode of the 7th diode, and the both ends of the electricity taking coil are connected to the negative of the 8th diode respectively The cathode of the anode and the 7th diode of pole and the 5th diode and the anode of the first diode, the described 8th The anode of diode and the plus earth line of the 7th diode.

6. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 5, which is characterized in that described Filter circuit includes the 3rd resistor for connecting the first diode cathode and the 5th diode cathode, the 3rd resistor It connects with first capacitor and the 4th capacitor in parallel, the first capacitor and the 4th capacity earth line.

7. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 6, which is characterized in that described Initial start-up circuit includes tertiary voltage detection chip, and the voltage of the first capacitor and the 4th capacitor flows to the third The output end of the anode of the input terminal of voltage checking chip and the 4th diode, the tertiary voltage detection chip passes through the 5th electricity First pin of resistance the 6th metal-oxide-semiconductor of connection, the first pin of the second pin connection third metal-oxide-semiconductor of the 6th metal-oxide-semiconductor are described Second pin of the 6th metal-oxide-semiconductor connects the third pin of the third metal-oxide-semiconductor and the cathode of the 4th diode by first resistor, Second pin of the third metal-oxide-semiconductor connects ground wire by the 6th capacitance connection ground wire, the tertiary voltage detection chip.

8. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 7, which is characterized in that described It includes first voltage detection chip that super appearance, which fills guarantor's circuit, anode and the tertiary voltage detection chip of the 4th diode Input terminal connects the third pin of the input terminal of the first voltage detection chip, second resistance and the first metal-oxide-semiconductor, and described first The output end of voltage checking chip is separately connected the second pin of the 23rd metal-oxide-semiconductor, the 7th electric metal-oxide-semiconductor by the 6th resistance First pin of the second pin and the 4th metal-oxide-semiconductor, the second pin of the 4th metal-oxide-semiconductor are separately connected the second resistance and First pin of one metal-oxide-semiconductor, the second pin of first metal-oxide-semiconductor are separately connected in parallel the 5th capacitor and the 7th capacitor, the The input terminal of six voltage checking chips, the output end of the 6th voltage checking chip connect the first pin of the 7th metal-oxide-semiconductor, institute State first voltage detection chip, the third pin of the 23rd electric metal-oxide-semiconductor, the third pin of the 7th metal-oxide-semiconductor, the described 6th Voltage checking chip, the 5th capacitor and the 7th capacitor are separately connected ground wire.

9. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 8, which is characterized in that described Accumulation power supply circuit includes second voltage detection chip, the second pin of the 23rd electric metal-oxide-semiconductor and the 6th capacitance connection The input terminal of the second voltage detection chip and the anode of the 11st diode, the second pin of the described second electric metal-oxide-semiconductor, parallel connection The 7th capacitor and the 9th diode of the 5th capacitance connection anode, the 11st diode anode with the 9th 2 pole The 9th pin of the 6th pin and the 5th voltage checking chip of the 5th voltage checking chip is connected after the anode connection of pipe, it is described The first inductance is connected on 9th pin, the output end of the second voltage detection chip is connected to Xiao Te by the 21st diode First foot of basic matrix column, the crus secunda of the Schottky array are connected to the 5th voltage detecting via the 25th resistance respectively The first pin and the 27th resistance of chip are connected to ground wire, the second pin and third pin of the 5th voltage checking chip Between access series connection the 8th resistance and the 9th resistance, the third pin of the 5th voltage checking chip be connected to by the tenth resistance Ground wire, the tenth pin, the 8th pin and the 5th pin of the 5th voltage checking chip are connected to ground wire.

10. being suitable for the novel outer route electricity getting device for applying fault detector as claimed in claim 9, which is characterized in that institute Stating active and standby circuit of mutually cutting includes the second diode, and the voltage that the super appearance fills guarantor's circuit output passes through second diode and inputs The input terminal of 4th power supply chip, the output end of the 4th power supply chip is via third diode and the accumulation power supply circuit And after the linear power supply of battery and connect, the battery connects the input terminal of the 9th power supply chip via the 12nd diode, described The output end of 9th power supply chip and the accumulation power supply circuit in parallel, the battery, the 9th power supply chip, the described 4th Power supply chip connects ground wire, and the output end of the 4th power supply chip and the anode of second diode connect via third capacitor Ground line, is connected in parallel the second capacitor of ground wire between the accumulation power supply circuit and the output end of the 9th power supply chip.