CN113689644A - Micro-current safety electronic fence - Google Patents
Micro-current safety electronic fence Download PDFInfo
- Publication number
- CN113689644A CN113689644A CN202111078903.8A CN202111078903A CN113689644A CN 113689644 A CN113689644 A CN 113689644A CN 202111078903 A CN202111078903 A CN 202111078903A CN 113689644 A CN113689644 A CN 113689644A
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- pole
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- 230000005669 field effect Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 8
- 241001465754 Metazoa Species 0.000 description 2
- 238000004870 electrical engineering Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
- G08B13/122—Mechanical actuation by the breaking or disturbance of stretched cords or wires for a perimeter fence
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Abstract
A micro-current safety electronic fence limits the current of a touch net to be below 10 milliamperes by adopting a high-value resistor, and ensures the personal safety. When people or objects touch the net and are conducted with the ground, the field effect tube is immediately conducted, the normally open contact of the relay is closed, and the alarm and the monitoring probe are started to work. When no touch network occurs, only a plurality of light emitting diodes with the detection circuit working to display the on and off of the conducting wires work, and the total power consumption is less than 5W.
Description
Technical Field
The invention relates to a micro-current safety electronic fence, belonging to the field of power grids.
Background
The existing power grid adopts the technical scheme that two bare leads with pulse high-voltage electricity with different polarities are arranged at the position smaller than the passing size of a human body. Has the defects of easy injury to people, easy short circuit, easy air discharge and the like. And the insulation requirements and therefore the cost are high.
Disclosure of Invention
The electrical engineering basis of the invention is that the voltage of the positive electrode and the negative electrode output after the current of the alternating current power supply network is rectified by a bridge type is equal to 0.9 time of the input alternating current voltage of the bridge stack.However, the voltage of the positive pole of the bridge stack to the earth zero potential is positive 0.45 times of alternating voltage, the voltage of the negative pole of the bridge pile to the earth zero potential is minus 0.45 times of alternating current voltage.
A relay coil (2) and an D, S pole of a field effect tube (4) are connected in series between the positive pole and the negative pole of the rectified output of an alternating current power supply through a bridge stack (1), and a boosting resistor (5) and a capacitor (6) are connected in parallel between G, S poles of the field effect tube (4). The follow current tube (3) is connected in parallel with the relay coil (2). The G pole of the field effect tube (4) is connected with the negative pole of the net touching luminous tube (8) after being connected with the net touching current limiting resistor (7) in series, the positive pole of the net touching luminous tube (8) is connected with the fuse (9) in series and then connected with the negative pole of the net connecting diode (10), and the positive pole of the net connecting diode (10) is connected with the electronic fence (13). The anode of the bridge stack (1) is connected with the anode of the electrified luminotron (12), and the cathode of the electrified luminotron (12) is connected with the cathode of the touch net luminotron (8) after being connected with the divider resistor (11) in series.
The electronic fence (13) is composed of a plurality of parallel bare wires.
One pole of the alternating current power supply is connected with a normally open contact (23) of the relay, a fixed contact of the relay is respectively connected with one ends of the contact network alarm (24) and the monitoring probe (25), and the other ends of the contact network alarm (24) and the monitoring probe (25) are connected with the other pole of the alternating current power supply.
An electrified luminous tube (12), a voltage dividing resistor (11), a net contacting current limiting resistor (7) and a boosting resistor (5) are sequentially connected in series between the positive electrode and the negative electrode of the bridge stack (1). When no bare conductor is grounded in the electronic fence (13), the current passing through the divider resistor (11) with high resistance value is extremely small, only the electrified luminotron (12) can emit light but the voltage drop of the booster resistor (5) can not reach G, S electrode trigger voltage of the field effect tube (4), D, S electrode of the field effect tube (4) is not conducted, the relay coil (2) has no current, and the normally open contact (23) does not act.
When a human or animal touches a bare conductor in the electronic fence (13), a voltage difference which is equal to minus 0.45 times of the alternating current power supply voltage U is formed between the negative electrode of the bridge stack (1) and zero potential ground to generate current. The current flows into the cathode of the bridge stack (1) after passing through a network connection diode (10), a fuse (9), a network contact luminous tube (8), a network contact current limiting resistor (7) and a boosting resistor (5). The current flowing through the boost resistor (5) enables the voltage at the two ends of the boost resistor (5) to rise and reach G, S pole trigger voltage of the field effect tube (4), D, S pole of the field effect tube (4) is unblocked, the relay coil (2) is electrified, the normally open contact (23) of the relay is closed, the outdoor touch net alarm (24) and the monitoring probe (25) are arranged to start to be electrified, and meanwhile, the touch net luminous tube (8) also displays light.
The capacitor (6) keeps the voltage at the two ends of the boost resistor (5) stable. The follow current tube (3) eliminates the counter potential of the relay coil (2).
In order to ensure safety, the touch net current limiting resistor (7) is set to be a high resistance value so as to limit the current to be less than 10 milliamperes. The fusing current of the fuse (9) is less than 20 milliamperes,
the current of the low-voltage output end of the transformer (14) is rectified and output through the low-voltage bridge stack (15), a network breaking alarm (16) and the C, E pole of the triode (17) are connected in series between the positive pole and the negative pole, the B pole of the triode (17) is connected with the base resistor (18) in series and then connected with the positive pole of the voltage regulator tube (19), and the negative pole of the voltage regulator tube (19) is connected with the diode negative pole of the OR gate circuit (20). The anode of the low-voltage bridge stack (15) is connected with a potentiometer (22) in series and then connected with the anode of the light-emitting diode in the light-emitting diode group (21), the cathode of each light-emitting diode is respectively connected with one end of a bare wire in the electronic fence (13), and the other ends of all bare wires in the electronic fence (13) are connected with the cathode of the low-voltage bridge stack (15). The cathode of each LED in the LED group (21) is connected to the anode of one diode in the OR gate circuit (20).
The circuit is used for detecting the on-off state of the bare conductor of the electronic fence (13), and the light emitting of the light emitting diode is that the bare conductor in the electronic fence (13) is not in open circuit. If a bare wire in the electronic fence (13) is broken, the light emitting diodes connected with the wire in the light emitting diode group (21) are extinguished. A plurality of bare wires connected in parallel in the electronic fence (13) are disconnected, the parallel resistance value is increased, the voltage drop is increased, the voltage is conducted to the cathode of the voltage-stabilizing tube (19) through the OR gate circuit, the voltage-stabilizing tube (19) is conducted, base current is generated through the base resistor (18), and the C, E electrode current amplified by the triode (17) enables the grid-cut alarm (16) to work.
The transformer (14) is set to a low voltage output of 36 volts. A potentiometer (22) is provided for regulating the voltage drop. The OR gate circuit (20) is used for preventing the open wire of the electronic fence (13) from being communicated. The base resistor (18) is used to control the base current.
Drawings
FIG. 1: and (3) an electric principle diagram of the micro-current safety electronic fence.
In the figure: 1. bridge rectifier, 2, relay coil, 3, follow current tube, 4, field effect tube, 5, boost resistor, 6, capacitor, 7, net-touching current-limiting resistor, 8, net-touching luminous tube, 9, fuse, 10, net-connecting diode, 11, divider resistor, 12, energized luminous tube, 13, electronic fence, 14, transformer, 15, low-voltage bridge rectifier, 16, net-breaking alarm, 17, triode, 18, base resistor, 19, voltage regulator, 20, or gate circuit, 21, luminous diode group, 22, potentiometer, 23, normally open contact of relay, 24, net-touching alarm, 25 and monitoring probe.
Detailed Description
The electrical engineering basis of the invention is AC power supplyThe output positive and negative voltages after bridge rectification are equal to 0.9 times of the bridge input AC voltage.But the voltage of the positive pole of the bridge pile to the earth zero potential is 0.45 times of the positive alternating voltage, and the voltage of the negative pole of the bridge pile The voltage of the pole pair potential is minus 0.45 times the alternating voltage.
A relay coil (2) and an D, S pole of a field effect tube (4) are connected in series between the positive pole and the negative pole of the rectified output of an alternating current power supply through a bridge stack (1), and a boosting resistor (5) and a capacitor (6) are connected in parallel between G, S poles of the field effect tube (4). The follow current tube (3) is connected in parallel with the relay coil (2). The G pole of the field effect tube (4) is connected with the negative pole of the net touching luminous tube (8) after being connected with the net touching current limiting resistor (7) in series, the positive pole of the net touching luminous tube (8) is connected with the fuse (9) in series and then connected with the negative pole of the net connecting diode (10), and the positive pole of the net connecting diode (10) is connected with the electronic fence (13). The anode of the bridge stack (1) is connected with the anode of the electrified luminotron (12), and the cathode of the electrified luminotron (12) is connected with the cathode of the touch net luminotron (8) after being connected with the divider resistor (11) in series.
The electronic fence (13) is composed of a plurality of parallel bare wires.
One pole of the alternating current power supply is connected with a normally open contact (23) of the relay, a fixed contact of the relay is respectively connected with one ends of the contact network alarm (24) and the monitoring probe (25), and the other ends of the contact network alarm (24) and the monitoring probe (25) are connected with the other pole of the alternating current power supply.
An electrified luminous tube (12), a voltage dividing resistor (11), a net contacting current limiting resistor (7) and a boosting resistor (5) are sequentially connected in series between the positive electrode and the negative electrode of the bridge stack (1). When no bare conductor is grounded in the electronic fence (13), the current passing through the divider resistor (11) with high resistance value is extremely small, only the electrified luminotron (12) can emit light but the voltage drop of the booster resistor (5) can not reach G, S electrode trigger voltage of the field effect tube (4), D, S electrode of the field effect tube (4) is not conducted, the relay coil (2) has no current, and the normally open contact (23) does not act.
When a human or animal touches a bare conductor in the electronic fence (13), a voltage difference which is equal to minus 0.45 times of the alternating current power supply voltage U is formed between the negative electrode of the bridge stack (1) and zero potential ground to generate current. The current flows into the cathode of the bridge stack (1) after passing through a network connection diode (10), a fuse (9), a network contact luminous tube (8), a network contact current limiting resistor (7) and a boosting resistor (5). The current flowing through the boost resistor (5) enables the voltage at the two ends of the boost resistor (5) to rise and reach G, S pole trigger voltage of the field effect tube (4), D, S pole of the field effect tube (4) is unblocked, the relay coil (2) is electrified, the normally open contact (23) of the relay is closed, the outdoor touch net alarm (24) and the monitoring probe (25) are arranged to start to be electrified, and meanwhile, the touch net luminous tube (8) also displays light.
The capacitor (6) keeps the voltage at the two ends of the boost resistor (5) stable. The follow current tube (3) eliminates the counter potential of the relay coil (2).
In order to ensure safety, the touch net current limiting resistor (7) is set to be a high resistance value so as to limit the current to be less than 10 milliamperes. The fusing current of the fuse (9) is less than 20 milliamperes,
the current of the low-voltage output end of the transformer (14) is rectified and output through the low-voltage bridge stack (15), a network breaking alarm (16) and the C, E pole of the triode (17) are connected in series between the positive pole and the negative pole, the B pole of the triode (17) is connected with the base resistor (18) in series and then connected with the positive pole of the voltage regulator tube (19), and the negative pole of the voltage regulator tube (19) is connected with the diode negative pole of the OR gate circuit (20). The anode of the low-voltage bridge stack (15) is connected with a potentiometer (22) in series and then connected with the anode of the light-emitting diode in the light-emitting diode group (21), the cathode of each light-emitting diode is respectively connected with one end of a bare wire in the electronic fence (13), and the other ends of all bare wires in the electronic fence (13) are connected with the cathode of the low-voltage bridge stack (15). The cathode of each LED in the LED group (21) is connected to the anode of one diode in the OR gate circuit (20).
The circuit is used for detecting the on-off state of the bare conductor of the electronic fence (13), and the light emitting of the light emitting diode is that the bare conductor in the electronic fence (13) is not in open circuit. If a bare wire in the electronic fence (13) is broken, the light emitting diodes connected with the wire in the light emitting diode group (21) are extinguished. A plurality of bare wires connected in parallel in the electronic fence (13) are disconnected, the parallel resistance value is increased, the voltage drop is increased, the voltage is conducted to the cathode of the voltage-stabilizing tube (19) through the OR gate circuit, the voltage-stabilizing tube (19) is conducted, base current is generated through the base resistor (18), and the C, E electrode current amplified by the triode (17) enables the grid-cut alarm (16) to work.
The transformer (14) is set to a low voltage output of 36 volts. A potentiometer (22) is provided for regulating the voltage drop. The OR gate circuit (20) is used for preventing the open wire of the electronic fence (13) from being communicated. The base resistor (18) is used to control the base current.
The invention has the advantages that:
1. simple structure, and the used elements are common mature elements tested for many years, so the failure rate is low. The invention conforms to the aims of simple and reliable invention.
2. The facility insulation requirement is low, so the cost performance is high, and the probability of air breakdown discharge is reduced. Wide application range and easy popularization.
3. The utility model has the advantages of full power grid monopole power supply, the increase of wire utilization ratio doubles.
4. The whole power grid can adopt monopole power supply at two ends, so that the effective distance of the touch action reaction is doubled.
5. The relay, the touch screen alarm and the monitoring probe are not power-consumptive before the touch screen occurs. Therefore, the touch net can be quickly found by a plurality of safety monitoring probes.
6. Only a few light emitting diodes of the detection circuit consume power before the touch of the network occurs, and the total power consumption is less than 5W.
7. The electric network adopts a high resistance value resistor to limit the output network contact current to be less than 10 milliamperes, and is harmless to people. And a 20 milliampere fuse is also arranged to serve as a double fuse. The safety is extremely high.
Claims (1)
1. The utility model provides a little electric current safety fence, including bridge (1), relay coil (2), afterflow pipe (3), field effect transistor (4), boost resistance (5), electric capacity (6), touch net current-limiting resistance (7), touch net luminotron (8), fuse (9), connect net diode (10), divider resistance (11), circular telegram luminotron (12), fence (13), transformer (14), low pressure bridge (15), disconnected net alarm (16), triode (17), base resistance (18), stabilivolt (19), or gate circuit (20), emitting diode group (21), potentiometre (22), relay normally open contact (23), touch net alarm (24), monitor (25), its characterized in that: an alternating current power supply is rectified and output through a bridge stack (1), a relay coil (2) and D, S poles of a field effect tube (4) are connected in series between the positive pole and the negative pole of the alternating current power supply, a boosting resistor (5) and a capacitor (6) are connected in parallel between G, S poles of the field effect tube (4), a follow current tube (3) is connected in parallel with the relay coil (2) and a G pole of the field effect tube (4) in series, is connected with the negative pole of a touch net luminous tube (8) after being connected with a grid current limiting resistor (7), is connected with the positive pole of the touch net luminous tube (8) in series after being connected with a fuse (9) in series, is connected with the negative pole of a touch net luminous tube (10), the positive pole of the touch net luminous tube (10) is connected with an electronic fence (13), the positive pole of the bridge stack (1) is connected with the positive pole of the electronic luminous tube (12), the negative pole of the electrified luminous tube (12) is connected with the negative pole of the touch net luminous tube (8) after being connected with a divider resistor (11) in series, one pole of the alternating current power supply is connected with a normally open contact (23), fixed contact of the relay is respectively connected with an alarm (24) and a fixed contact of the relay (25), The other ends of the touch network alarm (24) and the monitoring probe (25) are connected with the other pole of the alternating current power supply, the current of the low-voltage output end of the transformer (14) is sequentially connected in series between the positive pole and the negative pole of the rectified output of the low-voltage bridge stack (15) and the grid-cut alarm (16) and the C, E pole of the triode (17), the B pole of the triode (17) is connected in series with the base resistor (18) and then connected with the positive pole of the voltage-regulator tube (19), the cathode of a voltage-stabilizing tube (19) is connected with the cathode of a diode of the OR gate circuit (20), the anode of the low-voltage bridge stack (15) is connected with a potentiometer (22) in series and then connected with the anode of a light-emitting diode in the light-emitting diode group (21), the cathode of each light-emitting diode is respectively connected with one end of a bare wire in the electronic fence (13), the other ends of all the bare wires in the electronic fence (13) are connected with the cathode of the low-voltage bridge stack (15), and the cathode of each light-emitting diode in the light-emitting diode group (21) is respectively connected with the anode of one diode in the OR gate circuit (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078903.8A CN113689644A (en) | 2021-09-05 | 2021-09-05 | Micro-current safety electronic fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078903.8A CN113689644A (en) | 2021-09-05 | 2021-09-05 | Micro-current safety electronic fence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113689644A true CN113689644A (en) | 2021-11-23 |
Family
ID=78586348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111078903.8A Pending CN113689644A (en) | 2021-09-05 | 2021-09-05 | Micro-current safety electronic fence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113689644A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2821721Y (en) * | 2005-09-21 | 2006-09-27 | 东营市莱建家政服务中心 | Cast iron enclosure anti-theft alarm |
| US20080186172A1 (en) * | 2007-02-01 | 2008-08-07 | Paul Thompson | Intrusion detection system for electric fences |
| CN102661081A (en) * | 2012-05-23 | 2012-09-12 | 四川省电力公司泸州电业局 | Safety fence for power maintenance site |
| CN202677544U (en) * | 2012-06-12 | 2013-01-16 | 上海汉合信息技术有限公司 | Intelligent alarm device used for electronic fence |
| CN102968869A (en) * | 2012-12-12 | 2013-03-13 | 成都海德克科技发展有限公司 | Electronic fence employing protective zone extension module and alerting method thereof |
| CN103745543A (en) * | 2013-12-25 | 2014-04-23 | 广州乐盾安防科技有限公司 | A high-voltage pulse electronic fence |
| CN111399553A (en) * | 2020-01-02 | 2020-07-10 | 骆金山 | Simple water level controller |
| CN211699126U (en) * | 2020-04-20 | 2020-10-16 | 山东飞天光电科技股份有限公司 | Device capable of detecting high-voltage pulse signal of electronic fence on line and giving alarm |
-
2021
- 2021-09-05 CN CN202111078903.8A patent/CN113689644A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2821721Y (en) * | 2005-09-21 | 2006-09-27 | 东营市莱建家政服务中心 | Cast iron enclosure anti-theft alarm |
| US20080186172A1 (en) * | 2007-02-01 | 2008-08-07 | Paul Thompson | Intrusion detection system for electric fences |
| CN102661081A (en) * | 2012-05-23 | 2012-09-12 | 四川省电力公司泸州电业局 | Safety fence for power maintenance site |
| CN202677544U (en) * | 2012-06-12 | 2013-01-16 | 上海汉合信息技术有限公司 | Intelligent alarm device used for electronic fence |
| CN102968869A (en) * | 2012-12-12 | 2013-03-13 | 成都海德克科技发展有限公司 | Electronic fence employing protective zone extension module and alerting method thereof |
| CN103745543A (en) * | 2013-12-25 | 2014-04-23 | 广州乐盾安防科技有限公司 | A high-voltage pulse electronic fence |
| CN111399553A (en) * | 2020-01-02 | 2020-07-10 | 骆金山 | Simple water level controller |
| CN211699126U (en) * | 2020-04-20 | 2020-10-16 | 山东飞天光电科技股份有限公司 | Device capable of detecting high-voltage pulse signal of electronic fence on line and giving alarm |
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