CN108594064A - A kind of low pressure protection against electric shock prior-warning device and method - Google Patents
A kind of low pressure protection against electric shock prior-warning device and method Download PDFInfo
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- CN108594064A CN108594064A CN201810679748.7A CN201810679748A CN108594064A CN 108594064 A CN108594064 A CN 108594064A CN 201810679748 A CN201810679748 A CN 201810679748A CN 108594064 A CN108594064 A CN 108594064A
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- repeater
- mutual inductor
- sensing node
- low pressure
- ground wire
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- General Physics & Mathematics (AREA)
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Abstract
This application discloses a kind of low pressure protection against electric shock prior-warning device and methods.The device includes mutual inductor, sensing node and repeater；Mutual inductor has ground wire mounting portion, the ground wire of low-voltage circuit to be measured is installed on by being grounded mounting portion, and mutual inductor is electrically connected with sensing node, for detecting the electric signal on ground wire, the corresponding voltage signal of output electric signal to sensing node；Sensing node has controller, is used for receiving voltage signal, comparison voltage signal and reference voltage, determines whether to export leakage pre-alarm information to repeater according to comparison result；Repeater is communicated to connect with sensing node, for exporting leakage pre-alarm information to the terminal device of setting user, carries out early warning.Using above-mentioned technical proposal, when leaking electricity, leakage pre-alarm information is sent to the mobile phone of user by wireless transmission method, realizes the remote prompting function of the monitoring and pre-warning signal leaked electricity to low-voltage circuit.
Description
Technical field
The invention relates to the technology for measuring electric variable more particularly to a kind of low pressure protection against electric shock prior-warning device and sides
Method.
Background technology
Currently, low-voltage circuit waits natural environmental reasons because chronic sun exposure drenches with rain, the insulation sheath of transmission line of electricity is caused to fall off
Aging is easy that the pedestrian close to aging circuit is allowed to get an electric shock in rainy day wet environment, life-threatening safety.It detects in the related technology low
The mode of pressure line electrical leakage includes investigating mode, by the way of clamp on amperemeter investigation etc. using electroscope, and aforesaid way needs
Operation maintenance personnel is wanted manually to investigate earth point one by one, investigation is inefficient.
Invention content
A kind of low pressure protection against electric shock prior-warning device of the application offer and method, to optimize low-voltage leakage side in the related technology
Case effectively can carry out early warning to the drain conditions of low-voltage circuit, prevent the anti-life of electric shock accidents.
In a first aspect, the embodiment of the present application provides a kind of low pressure protection against electric shock prior-warning device, including mutual inductor, sensing node
And repeater；
The mutual inductor has ground wire mounting portion, low-voltage circuit to be measured is installed on by the ground wire mounting portion
Ground wire, and the mutual inductor is electrically connected with the sensing node, for detecting the electric signal on the ground wire, described in output
The corresponding voltage signal of electric signal is to the sensing node；
The sensing node has controller, for receiving the voltage signal, the voltage signal and reference electricity
Pressure determines whether to export leakage pre-alarm information to the repeater according to comparison result；
The repeater is communicated to connect with the sensing node, for exporting leakage pre-alarm information to setting user's
Terminal device carries out early warning.
Second aspect, the embodiment of the present application also provides a kind of low pressure protection against electric shock method for early warning, by above-mentioned first aspect institute
The low pressure protection against electric shock prior-warning device stated executes, including：
Mutual inductor detects the electric signal on the ground wire of low-voltage circuit to be measured, exports the corresponding voltage signal of the electric signal
To sensing node；
Sensing node is after receiving the voltage signal, the voltage signal and reference voltage, is tied according to comparing
Fruit determines whether to export leakage pre-alarm information to the repeater；
Repeater exports leakage pre-alarm information to the terminal device of setting user, carries out early warning：
The application provides a kind of low pressure protection against electric shock early warning scheme, and early warning dress is constituted by mutual inductor, sensing node and repeater
It sets, mutual inductor is installed on ground wire by being grounded mounting portion, and it is corresponding to export the electric signal for the electric signal on detection ground wire
Voltage signal is to sensing node；Sensing node has controller, compares the voltage signal and reference voltage, is sentenced according to comparison result
It is fixed whether to export leakage pre-alarm information to repeater；Repeater exports leakage pre-alarm information to the terminal device of setting user,
Carry out early warning.Using above-mentioned technical proposal, when leaking electricity, leakage pre-alarm information is sent to use by wireless transmission method
The mobile phone at family realizes the remote prompting function of the monitoring and pre-warning signal leaked electricity to low-voltage circuit.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for low pressure protection against electric shock prior-warning device that the embodiment of the present application one provides.
Specific implementation mode
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the application, rather than the restriction to the application.It also should be noted that in order to just
It is illustrated only in description, attached drawing and the relevant part of the application rather than entire infrastructure.
Embodiment one
Fig. 1 is a kind of structural schematic diagram for low pressure protection against electric shock prior-warning device that the embodiment of the present application one provides, the present embodiment
Be applicable to low-voltage circuit drain conditions it is long-range monitoring and real-time early warning situation, the low pressure protection against electric shock prior-warning device 100 include：
Mutual inductor 1, sensing node 2 and repeater 3；
The mutual inductor 1 has ground wire mounting portion 1-1, low pressure to be measured is installed on by the ground wire mounting portion 1-1
The ground wire of circuit, and the mutual inductor 1 is electrically connected with the sensing node 2, for detecting the electric signal on the ground wire,
The corresponding voltage signal of the electric signal is exported to the sensing node 2；
The sensing node 2 has controller, for receiving the voltage signal, the voltage signal and reference electricity
Pressure determines whether to export leakage pre-alarm information to the repeater 3 according to comparison result；
The repeater 3 is communicated to connect with the sensing node 2, for exporting leakage pre-alarm information to setting user
Terminal device, carry out early warning.
It should be noted that mutual inductor uses marine glue embedding shell structure, it is used for circuit water-proof, improves device itself
Safety.
Optionally, the mounting portion is through-hole, and the ground wire is realized across the through-hole is installed on the mutual inductor
The ground wire.Such as, the shell of mutual inductor be equipped with hold ground wire across through-hole.Mutual inductor can be current mode mutual inductor,
When there are when leakage current, for mutual inductor because the leakage current generates mutual inducing current, mutual inductor handles electric current on ground wire,
Corresponding voltage signal is obtained, exports the corresponding voltage signal of mutual inducing current to sensing node.
Optionally, the mounting portion is clip, and the mutual inductor is fixed in one end of the clip, the ground wire across
The clip is realized is installed on the ground wire by the mutual inductor.
Optionally, the mutual inductor is connect with the sensing node by shielded cable.
Optionally, the controller is microcontroller, is used to monitor the voltage signal for the pin being connect with the mutual inductor, and
When the value of the voltage signal is more than predetermined threshold value, the voltage signal input voltage comparator is realized the electricity
Pressure signal is compared with reference voltage, determines whether to export leakage pre-alarm information to the repeater according to comparison result.
Optionally, module is connect the sensing node by radio communication with the repeater.
Optionally, the wireless communication module includes LORA wireless modules, for using LORA wireless frequency expansion modulation systems
Leakage pre-alarm information is transmitted to the repeater.The communication module has the characteristics that low-power consumption, realizes the transmitting of radio wave
And reception, actual test direct line of sight distance reach 2.5 kilometers, microcontroller (controller) is connect by SPI (Serial Peripheral Interface (SPI))
Mouth carries out data exchange with wireless communication module.
Optionally, the repeater has GPRS module, for being connected by the terminal equipment in communication of GPRS module and user
It connects.It should be noted that repeater is installed on the place with GPRS signals, and it is no more than 1.8 thousand at a distance from sensing node
Rice.
Optionally, the repeater includes power switching circuit, for control the repeater be connected to it is solar powered
Circuit or lithium battery power supply circuit.Power-supplying circuit includes concatenated first diode, the second diode, first switch,
One inductance, voltage regulator circuit, the second inductance；Wherein, after the 8th capacitance of the common end of the first diode and the second diode series connection
Ground connection.Wherein, the 8th capacitance can select electrolytic capacitor, and the common end connects the anode of the 8th capacitance, and the 8th capacitance is born
Pole is grounded.The output current of 8th the first diode of capacitance pair carries out rectification processing.The cathode of second diode passes through first
The cathode of switch connection third diode, the first switch is for switching solar power supply circuit or during lithium battery power supply circuit is
It powers after device.Voltage regulator circuit includes voltage-stablizer, the 5th capacitance and the 7th capacitance.Wherein, the 7th capacitance is connected on voltage-stablizer
Between input terminal and ground terminal, and the input terminal of voltage-stablizer connects the first inductance.5th capacitance is series at the output end of voltage-stablizer
Between ground terminal, and the output end at voltage stabilizing end connects the second inductance.5th capacitance connects the 6th with the common end of the second inductance
It is grounded after capacitance, the other end of the second inductance exports supply voltage.
It should be noted that the anode of third diode connects lithium battery by third connecting terminal.Power-supplying circuit
It is connect with solar power supply circuit by the first connecting terminal and the second connecting terminal, and the first connecting terminal and the first diode
Anode connection, and the anode of the first diode is also connected with the cathode of the 13rd diode, the plus earth of the 13rd diode.
Due to the second diode cathode by first switch connect third diode cathode, in being by solar power supply circuit
When device is powered, first switch is in closed state, meanwhile, the breakdown of third diode reverse phase is embodied as lithium battery charging.If place
It can not be occurred by solar powered situation rainy days etc., then disconnect first switch automatically, be repeater by lithium battery
Power supply, to ensure electrical stability.
The embodiment of the present application provides a kind of low pressure protection against electric shock prior-warning device, is made of mutual inductor, sensing node and repeater,
Mutual inductor is installed on ground wire by being grounded mounting portion, and the electric signal on detection ground wire exports the corresponding electricity of the electric signal
Press signal to sensing node；Sensing node has controller, compares the voltage signal and reference voltage, is judged according to comparison result
Whether leakage pre-alarm information is exported to repeater；Repeater exports leakage pre-alarm information to the terminal device of setting user, into
Row early warning.Using above-mentioned technical proposal, when leaking electricity, leakage pre-alarm information is sent to user by wireless transmission method
Mobile phone, realize the remote prompting function of monitoring and pre-warning signal of leaking electricity to low-voltage circuit.
The embodiment of the present application one provides a kind of low pressure protection against electric shock method for early warning, what this method can be provided by above-described embodiment
Low pressure protection against electric shock prior-warning device executes, and realizes long-range monitoring and the real-time early warning of low-voltage circuit drain conditions.This method includes：
Step 410, mutual inductor detect the electric signal on the ground wire of low-voltage circuit to be measured, and it is corresponding to export the electric signal
Voltage signal is to sensing node.
Illustratively, mutual inductor is mounted on ground wire, has mutual inducing current to generate when mutual inductor detects on ground wire
When, mutual inducing current can be one high electricity by one level signal that can be identified by microcontroller of mutual inductor processing output
Flat output signal.The high level output signal is inputted sensing node by mutual inductor.
Step 420, sensing node are after receiving the voltage signal, the voltage signal and reference voltage, root
Determine whether to export leakage pre-alarm information to the repeater according to comparison result.
Illustratively, sensing node includes controller, can be microcontroller.Above-mentioned high level output signal is that microcontroller can
With the level signal of identification.When microcontroller monitors that the pin being connect with mutual inductor has the input of high level output signal, by interior
The voltage comparator in portion compares the high level output signal and reference voltage signal.If high level output signal is believed than reference voltage
Number voltage it is high, it is determined that there is electric leakage, call wireless communication module output leakage pre-alarm information to repeater.Wherein, wirelessly
Communication module can be LORA wireless modules.
Step 430, repeater export leakage pre-alarm information to the terminal device of setting user, carry out early warning.
Illustratively, according to electromagnetic coupling theory and the technology of Internet of things of combination low-power consumption wide area network, current mode is utilized
Mutual inductor monitors the earth strap electricity condition of low-voltage circuit.According to practical measurement, under normal condition low voltage earthing line be without
Electricity, electric current zero with the presence of the electric current of certain value on low-voltage circuit, therefore mutual inductor are mounted on when low-voltage circuit leaks electricity
On ground wire, mutual inductor is connect with sensing node by shielded cable.Repeater is then mounted on Distance-sensing node not far 1.8 thousand
Rice and the place for needing GPRS signals, to be transmitted to the terminal of user after the leakage pre-alarm information for receiving sensing node
Equipment.When mutual inductor, which detects, has electric current on ground wire, which can export one and can be identified by microcontroller
Level signal, i.e. microcontroller monitor that the pin being connect with mutual inductor has the input of high level output signal.Microcontroller by with than
Signal fusing is carried out compared with reference voltage preset on device, if the voltage signal that mutual inductor generates is higher than the voltage of reference voltage,
Wireless communication module is called to export leakage pre-alarm information to repeater, repeater is believed the leakage pre-alarm by GPRS transmission technology
Breath is forwarded on the terminal device (can be mobile phone) of user, realizes the monitoring of long-range low-voltage leakage signal and pre- in real time
Alert function.
The technical solution of the present embodiment detects the electric signal on the ground wire of low-voltage circuit to be measured by mutual inductor, output
The corresponding voltage signal of the electric signal is to sensing node；Sensing node is after receiving the voltage signal, the electricity
Signal and reference voltage are pressed, determines whether to export leakage pre-alarm information to the repeater according to comparison result；Repeater will leak
Electric warning information is exported to the terminal device of setting user, carries out early warning.Using above-mentioned technical proposal, by being mounted on ground wire
On mutual inductor, connect with mutual inductor sensing node, with sensing node wireless communication repeater constitute low pressure protection against electric shock
Prior-warning device can be wirelessly connected transmission signal data with the mobile phone of remote user, realize the prison to leak electricity to low-voltage circuit
The remote prompting function of survey and pre-warning signal, overall structure is simple, and dependence is solar powered, energy conservation and environmental protection.
Note that above are only preferred embodiment and the institute's application technology principle of the application.It will be appreciated by those skilled in the art that
The application is not limited to specific embodiment described here, can carry out for a person skilled in the art it is various it is apparent variation,
The protection domain readjusted and substituted without departing from the application.Therefore, although being carried out to the application by above example
It is described in further detail, but the application is not limited only to above example, in the case where not departing from the application design, also
May include other more equivalent embodiments, and scope of the present application is determined by scope of the appended claims.
Claims (10)
1. a kind of low pressure protection against electric shock prior-warning device, which is characterized in that including：Mutual inductor, sensing node and repeater；
The mutual inductor has ground wire mounting portion, and the ground connection of low-voltage circuit to be measured is installed on by the ground wire mounting portion
Line, and the mutual inductor is electrically connected with the sensing node, for detecting the electric signal on the ground wire, exports the telecommunications
Number corresponding voltage signal is to the sensing node；
The sensing node has controller, for receiving the voltage signal, the voltage signal and reference voltage, root
Determine whether to export leakage pre-alarm information to the repeater according to comparison result；
The repeater is communicated to connect with the sensing node, for exporting leakage pre-alarm information to the terminal of setting user
Equipment carries out early warning.
2. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the mounting portion is through-hole, described
Ground wire is realized across the through-hole is installed on the ground wire by the mutual inductor.
3. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the mounting portion is clip, described
The mutual inductor is fixed in one end of clip, and the ground wire is realized across the clip is installed on described connect by the mutual inductor
Ground wire.
4. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the mutual inductor is saved with the sensing
Point is connected by shielded cable.
5. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the controller is microcontroller, is used
In the voltage signal for the pin that monitoring is connect with the mutual inductor, and when the value of the voltage signal is more than predetermined threshold value,
By the voltage signal input voltage comparator, the voltage signal is compared by realization with reference voltage, is tied according to comparing
Fruit determines whether to export leakage pre-alarm information to the repeater.
6. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the sensing node and the relaying
Module connects device by radio communication.
7. low pressure protection against electric shock prior-warning device according to claim 6, which is characterized in that the wireless communication module includes
LORA wireless modules, for leakage pre-alarm information to be transmitted to the repeater using LORA wireless frequency expansions modulation system.
8. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the repeater has GPRS moulds
Block, for being connected by the terminal equipment in communication of GPRS module and user.
9. low pressure protection against electric shock prior-warning device according to claim 1, which is characterized in that the repeater includes power supply power supply
Circuit, the power-supplying circuit are electrically connected with solar power supply circuit or lithium battery power supply circuit, for being the repeater
Power supply.
10. a kind of low pressure protection against electric shock method for early warning, which is characterized in that touched by the low pressure described in any one of claim 1 to 9 is anti-
Electric prior-warning device executes, including：
Mutual inductor detects the electric signal on the ground wire of low-voltage circuit to be measured, exports the corresponding voltage signal of the electric signal to biography
Feel node；
Sensing node after receiving the voltage signal, according to comparison result sentence by the voltage signal and reference voltage
It is fixed whether to export leakage pre-alarm information to the repeater；
Repeater exports leakage pre-alarm information to the terminal device of setting user, carries out early warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810679748.7A CN108594064A (en) | 2018-06-27 | 2018-06-27 | A kind of low pressure protection against electric shock prior-warning device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810679748.7A CN108594064A (en) | 2018-06-27 | 2018-06-27 | A kind of low pressure protection against electric shock prior-warning device and method |
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| Publication Number | Publication Date |
|---|---|
| CN108594064A true CN108594064A (en) | 2018-09-28 |
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| CN201810679748.7A Pending CN108594064A (en) | 2018-06-27 | 2018-06-27 | A kind of low pressure protection against electric shock prior-warning device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531424A (en) * | 2020-12-27 | 2021-03-19 | 杭州拓深科技有限公司 | Safe electric shock prevention system based on 433 thing allies oneself with relay |
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| CN208872829U (en) * | 2018-06-27 | 2019-05-17 | 广州华铭电力科技有限公司 | A kind of low pressure protection against electric shock prior-warning device |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103516052A (en) * | 2013-10-12 | 2014-01-15 | 河南开启电力实业有限公司 | Power distribution equipment on-line monitoring early-warning terminal |
| CN106357793A (en) * | 2016-10-09 | 2017-01-25 | 佛山市威格特电气设备有限公司 | Waterlogging-preventing early-warning method and device for power distribution facility |
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| CN112531424A (en) * | 2020-12-27 | 2021-03-19 | 杭州拓深科技有限公司 | Safe electric shock prevention system based on 433 thing allies oneself with relay |
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