CN201490709U - Anti-dead halt lightning arrester - Google Patents
Anti-dead halt lightning arrester Download PDFInfo
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- CN201490709U CN201490709U CN2009200598804U CN200920059880U CN201490709U CN 201490709 U CN201490709 U CN 201490709U CN 2009200598804 U CN2009200598804 U CN 2009200598804U CN 200920059880 U CN200920059880 U CN 200920059880U CN 201490709 U CN201490709 U CN 201490709U
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Abstract
The utility model discloses an anti-dead halt lightning arrester, which is characterized by comprising two first overvoltage protection circuits, two relay switches, a voltage-current detection circuit connected with the two first overvoltage protection circuit, a reference voltage supply circuit, a driving circuit and a controller, wherein the two first overvoltage protection circuits are connected between the fire wire and zero wire of a power supply and two power supply output ends respectively; the two relay switches are connected between the output ends of the two first overvoltage protection circuits and the two power supply output ends; the voltage-current detection circuit detects the voltages and currents of the fire wire and zero wire of the power supply; the reference voltage supply circuit provides a reference voltage to the controller; the driving circuit drives a relay to be turned on or off according to the size of the current output by the controller; and the controller compares a detected voltage with the reference voltage and controls the relay to turn off the relay switches when there is lightning, so that the two power supply output ends can separate from the fire wire and zero wire of the power supply. The utility model aims to provide a lightning arrester which has a simple structure and can protect micro electronic equipment and system against dead halt caused by lightning.
Description
[technical field]
The present invention relates to a kind of anti-deadlock lightning arrester.
[background technology]
At present, thunder and lightning causes the scope of natural calamity to enlarge day by day, and particularly Lightning Electromagnetic Pulse is to the destruction of widely used microelectronic device of all trades and professions and system.When thundering, if microelectronic device and system, the control system of camera for example, still in running order, cause the control system of camera to cause deadlock with regard to being easy to so, after thunder and lightning because of thunder and lightning disturbs, need manually reclose the power supply of the control system of camera, it is worked on, therefore, be necessary to address the above problem.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology, and a kind of rational in infrastructure, the lightning arrester that can avoid microelectronic device and system to crash because of thunderbolt is provided.
For achieving the above object, the present invention has adopted following technical proposal:
Anti-deadlock lightning arrester is characterized in that including:
Two first overvoltage crowbars are connected between power firestreak, zero line L, N and two power output end U1, the U2;
Two relay switch JK1, JK2 are connected between the output and two power output end U1, U2 of two first overvoltage crowbars;
With the voltage and current detection circuit that two first overvoltage crowbars are connected, detect the voltage and current of power firestreak, zero line L, N;
The reference voltage supply circuit provides reference voltage to controller;
Drive circuit drives relay according to controller output current size and gets electric or dead electricity;
Relay J is connected with drive circuit;
Power circuit is for controller provides DC power supply;
Controller, it compares detected voltage and reference voltage, and control relay relay switch when thundering makes two power output end U1, U2 and power firestreak, zero line L, N disconnect.
Between power firestreak, zero line L, N, also be connected with second overvoltage crowbar.
First overvoltage crowbar is composed in parallel by a plurality of branch roads, and each branch road includes two fuses that are cascaded, and is connected with a piezo-resistance between two fuses, and the piezo-resistance other end on all branch roads links together; Input as first overvoltage crowbar after one end of all branch roads connects is connected with power line power firestreak L or zero-power line N, and the output as first overvoltage crowbar after the other end of all branch roads connects is connected with power output end.
Described voltage and current detection circuit includes instrument transformer, one end of the primary coil of this ear sensor is connected with the common port of all piezo-resistances by gas discharge tube ZD2, the other end ground connection of the primary coil of instrument transformer, one termination power zero line N of the secondary coil of instrument transformer, the other end of the secondary coil of instrument transformer is as detection signal output P.
Power circuit includes decompression capacitor C1, voltage stabilizing didoe D2, rectifier diode D1, filter capacitor C2, decompression capacitor C1 one end is connected with power firestreak L by resistance R 1, be connected with zero-power line N by piezo-resistance VR1 simultaneously, the decompression capacitor C1 other end and voltage stabilizing didoe D) negative pole is connected simultaneously with rectifier diode D1 positive pole, rectifier diode D1 negative pole is connected the output as power circuit with filter capacitor C2 one end, the voltage stabilizing didoe D2 positive pole and the filter capacitor C2 other end all are connected with zero-power line N.
The reference voltage supply circuit includes resistance R 2, diode D3, capacitor C 3, one end of resistance R 2 is connected with the output of power circuit, the other end of resistance R 2 is connected simultaneously with an end of diode D3 positive pole, capacitor C 3, an end of resistance R 3, the other end of diode D3 negative pole, capacitor C 3 is connected with zero-power line N respectively, the other end of resistance R 3 is connected with zero-power line N by variable resistance TR1, resistance R 4, and the centre tap of variable resistance TR1 is as the output of reference voltage supply circuit.
Controller includes a chip IC 1,8. its pin is connected with the output of power circuit as power input, 6. its pin is connected as the output of reference voltage input with the reference voltage supply circuit, 7. its pin is connected with the detection signal output P of current detection circuit as the detection signal input, 2. its pin is connected with resistance R 5, R6 simultaneously as triggering the sampling input, the other end of resistance R 5, R6 meets power firestreak, zero line L, N respectively, and its pin is 3. as control signal output ends.
Drive circuit includes diode D4, D5, controllable silicon D6, diode D4 negative pole is connected with the control signal output ends of chip IC 1 with the anodal back that is connected of two utmost point D5, the anodal back that is connected with diode D5 negative pole of diode D4 is connected with the control end of controllable silicon D6 by capacitor C 4, the termination power zero line N of controllable silicon D6, the other end of controllable silicon D6 meets power firestreak L by relay J.
Second overvoltage crowbar includes the identical resistance of branch road in a plurality of and first overvoltage crowbar; after all resistance parallel connections; the one end is connected with the first overvoltage crowbar output on the power firestreak L, and the other end is connected with the first overvoltage crowbar output on the zero-power line N by gas discharge tube.
The invention has the beneficial effects as follows: 1, the present invention can be when thundering, electronic equipment and power supply can be disconnected, after thunder and lightning, again can be with electronic equipment and power connection, make electronic equipment restart startup work again automatically, like this, avoid the electronic equipment Sensitive Apparatus to be subjected to the lightening pulse interference and cause deadlock; 2, overvoltage crowbar has been taked the mode of multiple branch circuit parallel connection, can break away from the main circuit of overvoltage crowbar when certain branch road of circuit has fault automatically, and other normal branch road is worked on; 3, detect control and adopt little energy consumption circuit, in the operating current 5mA, just having protected the circuit long-term work does not have temperature rise, and circuit long-time stability reliability is just protected.
[description of drawings]
Fig. 1 is a block diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention: referring to
Fig. 1, the present invention is anti-deadlock lightning arrester, it includes two first overvoltage crowbars 1, two relay switch JK1, JK2, voltage and current detection circuit 2, reference voltage supply circuit 3, drive circuit 4, relay J, power circuit 6, controller 7.
Referring to Fig. 2, first overvoltage crowbar 1 is composed in parallel by a plurality of branch roads, and each branch road includes two fuses that are cascaded, and is connected with a piezo-resistance between two fuses, and the piezo-resistance other end on all branch roads links together; Input as first overvoltage crowbar 1 after one end of all branch roads connects is connected with power line power firestreak L or zero-power line N; output as first overvoltage crowbar 1 after the other end of all branch roads connects is connected with power output end, and first overvoltage crowbar 1 forms power firestreak, zero line L, N lightning protection passage over the ground.Adopt the purpose of a plurality of branch roads to be, when certain piezo-resistance was damaged, by the fuse blows that is attached thereto, disengaging was connected with first overvoltage crowbar 1, makes the damage of piezo-resistance not influence other good piezo-resistance operate as normal.
Described voltage and current detection circuit 2 includes instrument transformer, one end of the primary coil of this instrument transformer is connected with the common port of all piezo-resistances by gas discharge tube ZD2, the other end ground connection of the primary coil of instrument transformer, one termination power zero line N of the secondary coil of instrument transformer, the other end of the secondary coil of instrument transformer is as detection signal output P.
Described power circuit 6 includes decompression capacitor C1, voltage stabilizing didoe D2, rectifier diode D1, filter capacitor C2, decompression capacitor C1 one end is connected with power firestreak L by resistance R 1, be connected with zero-power line N by piezo-resistance VR1 simultaneously, the decompression capacitor C1 other end is connected with rectifier diode D1 positive pole simultaneously with voltage stabilizing didoe D2 negative pole, rectifier diode D1 negative pole is connected the output as power circuit 6 with filter capacitor C2 one end, the voltage stabilizing didoe D2 positive pole and the filter capacitor C2 other end all are connected with zero-power line N.
Described reference voltage supply circuit 3 includes resistance R 2, diode D3, capacitor C 3, one end of resistance R 2 is connected with the output of power circuit 6, the other end of resistance R 2 is connected simultaneously with an end of diode D3 positive pole, capacitor C 3, an end of resistance R 3, the other end of diode D3 negative pole, capacitor C 3 is connected with zero-power line N respectively, the other end of resistance R 3 is connected with zero-power line N by variable resistance TR1, resistance R 4, and the centre tap of variable resistance TR1 is as the output of reference voltage supply circuit 3.
Described controller 7 includes a chip IC 1,8. its pin is connected as the output of power input with power circuit 6,6. its pin is connected as the output of reference voltage input with reference voltage supply circuit 3,7. its pin is connected with the detection signal output P of current detection circuit 2 as the detection signal input, 2. its pin is connected with resistance R 5, R6 simultaneously as triggering the sampling input, the other end of resistance R 5, R6 meets power firestreak, zero line L, N respectively, and its pin is 3. as control signal output ends.
Described drive circuit 4 includes diode D4, D5, controllable silicon D6, diode D4 negative pole is connected with the control signal output ends of chip IC 1 with the anodal back that is connected of diode D5, the anodal back that is connected with diode D5 negative pole of diode D4 is connected with the control end of controllable silicon D6 by capacitor C 4, the termination power zero line N of controllable silicon D6, the other end of controllable silicon D6 meets power firestreak L by relay J.
Between power firestreak, zero line L, N, also be connected with second overvoltage crowbar 8; second overvoltage crowbar 8 also has the lightning protection effect; second overvoltage crowbar 8 includes the identical resistance of branch road in a plurality of and first overvoltage crowbar 1; after all resistance parallel connections; the one end is connected with first overvoltage crowbar, 1 output on the power firestreak L; the other end is connected with first overvoltage crowbar, 1 output on the zero-power line N by gas discharge tube, the lightning protection passage that second overvoltage crowbar 8 forms between power firestreaks, zero line L, the N.
Operation principle of the present invention is as follows: form overvoltage protection by resistance R 1 and piezo-resistance VR1, the AC power of 220V is through decompression capacitor C1 step-down, rectifier diode D1 rectification, voltage stabilizing didoe D2 voltage stabilizing, filter capacitor C2 filtering obtains the pin of direct voltage by chip IC 1 and 8. is its power supply; Resistance R 2, diode D3, capacitor C 3 are formed a reference source, provide high-precision reference voltage to detection, and resistance R 3, R4, variable resistance TR1 are used for regulating the reference voltage of sending into chip IC 1.When thundering; resistance R 5; R6 triggers sampling; instrument transformer detects the electric current and the voltage of thunder and lightning from two first overvoltage crowbars, 1 there; the pin that flows to chip IC 1 then 7.; chip compares and makes judgement with lightning voltage and reference voltage; 3. export trigger current by chip IC 1 pin; through diode D4; after the D5 shaping; receive the control end of controllable silicon D6 by capacitor C 4; two relay switches are cut off in control relay J action, make two power output end U1; U2 and power firestreak; zero line L; N disconnects; so just electronic equipment and power supply are disconnected, avoid occurring the phenomenon that crashes because of thundering.After thunder and lightning, chip IC 1 is exported trigger current control relay J action again, connects two relay switches, makes two power output end U1, U2 be connected respectively with power firestreak, zero line L, N, and electronic equipment restarts startup work again automatically.
Anti-deadlock lightning arrester specification and circuit theory diagrams are just realized the best configuration of this function, and not representing is that unique circuit is formed, and also belong to interest field of the present invention as long as circuit theory is identical with this circuit basic principle.
Claims (9)
1. anti-deadlock lightning arrester is characterized in that including:
Two first overvoltage crowbars (1) are connected between power firestreak, zero line (L, N) and two power output ends (U1, U2);
Two relay switches (JK1, JK2) are connected between the output and two power output ends (U1, U2) of two first overvoltage crowbars (1);
The voltage and current detection circuit (2) that is connected with two first overvoltage crowbars (1) detects the voltage and current of power firestreak, zero line (L, N);
Reference voltage supply circuit (3) provides reference voltage to controller (7);
Drive circuit (4) drives relay (J) according to controller (7) output current size and gets electric or dead electricity;
Relay (J) is connected with drive circuit (4);
Power circuit (6) is for controller (7) provides DC power supply;
Controller (7), it compares detected voltage and reference voltage, and control relay when thundering (J) relay switch makes two power output ends (U1, U2) and power firestreak, zero line (L, N) disconnect.
2. anti-deadlock lightning arrester according to claim 1 is characterized in that also being connected with second overvoltage crowbar (8) between power firestreak, zero line (L, N).
3. anti-deadlock lightning arrester according to claim 1 and 2, it is characterized in that first overvoltage crowbar (1) is composed in parallel by a plurality of branch roads, each branch road includes two fuses that are cascaded, be connected with a piezo-resistance between two fuses, the piezo-resistance other end on all branch roads links together; Input as first overvoltage crowbar (1) after one end of all branch roads connects is connected with power line power firestreak (L) or zero-power line (N), and the output as first overvoltage crowbar (1) after the other end of all branch roads connects is connected with power output end.
4. anti-deadlock lightning arrester according to claim 3, it is characterized in that described voltage and current detection circuit (2) includes instrument transformer, one end of the primary coil of this instrument transformer is connected with the common port of all piezo-resistances by gas discharge tube (ZD2), the other end ground connection of the primary coil of instrument transformer, one termination power zero line (N) of the secondary coil of instrument transformer, the other end of the secondary coil of instrument transformer is as detection signal output (P).
5. anti-deadlock lightning arrester according to claim 4, it is characterized in that power circuit (6) includes decompression capacitor (C1), voltage stabilizing didoe (D2), rectifier diode (D1), filter capacitor (C2), decompression capacitor (C1) end is connected with power firestreak (L) by resistance (R1), be connected with zero-power line (N) by piezo-resistance (VR1) simultaneously, decompression capacitor (C1) other end is connected with rectifier diode (D1) positive pole simultaneously with voltage stabilizing didoe (D2) negative pole, rectifier diode (D1) negative pole is connected the output as power circuit (6) with filter capacitor (C2) end, voltage stabilizing didoe (D2) positive pole and filter capacitor (C2) other end all are connected with zero-power line (N).
6. anti-deadlock lightning arrester according to claim 5, it is characterized in that reference voltage supply circuit (3) includes resistance (R2), diode (D3), electric capacity (C3), one end of resistance (R2) is connected with the output of power circuit (6), the other end of resistance (R2) and diode (D3) positive pole, one end of electric capacity (C3), one end of resistance (R3) connects simultaneously, diode (D3) negative pole, the other end of electric capacity (C3) is connected with zero-power line (N) respectively, the other end of resistance (R3) is by variable resistance (TR1), resistance (R4) is connected with zero-power line (N), and the centre tap of variable resistance (TR1) is as the output of reference voltage supply circuit (3).
7. anti-deadlock lightning arrester according to claim 6, it is characterized in that controller (7) includes a chip (IC1), 8. its pin is connected as the output of power input with power circuit (6), 6. its pin is connected as the output of reference voltage input with reference voltage supply circuit (3), 7. its pin is connected with the detection signal output (P) of current detection circuit (2) as the detection signal input, its pin is 2. as triggering sampling input and resistance (R5, R6) connect simultaneously, resistance (R5, R6) the other end connects power firestreak respectively, zero line (L, N), its pin is 3. as control signal output ends.
8. anti-deadlock lightning arrester according to claim 7, it is characterized in that drive circuit (4) includes diode (D4, D5), controllable silicon (D6), diode (D4) negative pole is connected with the control signal output ends of chip (IC1) with the anodal back that is connected of diode (D5), the anodal back that is connected with diode (D5) negative pole of diode (D4) is connected with the control end of controllable silicon (D6) by electric capacity (C4), one termination power zero line (N) of controllable silicon (D6), the other end of controllable silicon (D6) connects power firestreak (L) by relay (J).
9. anti-deadlock lightning arrester according to claim 3; it is characterized in that second overvoltage crowbar (8) includes the identical resistance of branch road in a plurality of and first overvoltage crowbar (1); after all resistance parallel connections; the one end is connected with first overvoltage crowbar (1) output on the power firestreak (L), and the other end is connected with first overvoltage crowbar (1) output on the zero-power line (N) by gas discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200598804U CN201490709U (en) | 2009-06-30 | 2009-06-30 | Anti-dead halt lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200598804U CN201490709U (en) | 2009-06-30 | 2009-06-30 | Anti-dead halt lightning arrester |
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| Publication Number | Publication Date |
|---|---|
| CN201490709U true CN201490709U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200598804U Expired - Lifetime CN201490709U (en) | 2009-06-30 | 2009-06-30 | Anti-dead halt lightning arrester |
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| Country | Link |
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| CN (1) | CN201490709U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311882A (en) * | 2012-03-13 | 2013-09-18 | 深圳远征技术有限公司 | Lightning protection system |
| CN107733073A (en) * | 2017-11-01 | 2018-02-23 | 浙江现代电气有限公司 | A kind of main secondary power switching circuit |
-
2009
- 2009-06-30 CN CN2009200598804U patent/CN201490709U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311882A (en) * | 2012-03-13 | 2013-09-18 | 深圳远征技术有限公司 | Lightning protection system |
| CN103311882B (en) * | 2012-03-13 | 2016-09-07 | 深圳远征技术有限公司 | A kind of lightning-protection system |
| CN107733073A (en) * | 2017-11-01 | 2018-02-23 | 浙江现代电气有限公司 | A kind of main secondary power switching circuit |
| CN107733073B (en) * | 2017-11-01 | 2024-03-15 | 浙江现代电气有限公司 | Main and standby power supply switching circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 528400. Mausoleum industrial building, Ling Gang village, Torch Development Zone, Guangdong, Zhongshan Patentee after: Zhongshan Hengyi Electronic Technology Co., Ltd. Address before: 528400 Long Gang Industrial Building, Torch Development Zone, Zhongshan, Guangdong Patentee before: Zhongshan City Aomei Electronic Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 528400. B building, Ling Gang complex building, Torch Development Zone, Guangdong, Zhongshan Patentee after: Guangdong Hengyi Electronic Technology Co., Ltd. Address before: 528400. Mausoleum industrial building, Ling Gang village, Torch Development Zone, Guangdong, Zhongshan Patentee before: Zhongshan Hengyi Electronic Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
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| CX01 | Expiry of patent term |