CN205506927U - Portable rural power grids low pressure residual current malfunction alerting ware - Google Patents
Portable rural power grids low pressure residual current malfunction alerting ware Download PDFInfo
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- CN205506927U CN205506927U CN201620306112.4U CN201620306112U CN205506927U CN 205506927 U CN205506927 U CN 205506927U CN 201620306112 U CN201620306112 U CN 201620306112U CN 205506927 U CN205506927 U CN 205506927U
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Abstract
The utility model provides a portable rural power grids low pressure residual current malfunction alerting ware, follow amplifier circuit, rectifier module, AD converting circuit, microprocessor, alarm and power module including shell, mutual -inductor coil, IV converting circuit, voltage, the mutual -inductor coil is the loop configuration to install the outside at the shell, IV converting circuit, voltage are followed amplifier circuit, rectifier module, AD converting circuit, microprocessor and power module and are all set up in the inside of shell, the alarm is installed on the panel of the front side of shell, mutual -inductor coil, IV converting circuit, voltage are followed amplifier circuit, rectifier module, AD converting circuit and microprocessor and are established ties in proper order, microprocessor's output port links to each other with the alarm. This residual current malfunction alerting ware can be hand -carried, and it is nimble convenient to use, has effectively solved rural power grids low pressure residual current fault finding's problem in the twinkling of an eye, has better application prospect.
Description
Technical field
This utility model relates to a kind of power failure alarm, especially a kind of residual current fault alarm.
Background technology
The residual current protecting means of low pressure main flow are electric current action type residual current operated protective device and traditional three-level protective at present.Although electric current action type Aftercurrent protecting equipment can detect residual current fault, but is not yet widely used in rural power grids environment.Rural area economic condition is limited, and a lot of users are fitted without residual current operated protective device.Even if installation residual current operated protective device, its running status also cannot be ensured.It addition, rural power grids environment is more severe, electrical equipment and cable are general ageing, and the most also water pump or motor run.Additionally, due to the lack of standard of rural power grids user power utilization and complexity, circuit residual current produce instantaneity often, and do not possess repeatability, even if power transmission cannot guarantee that residual current can occur again again, this is that the investigation of residual current adds difficulty.
Therefore, rural power grids to be solved remaining residual current malfunction elimination problem under current technical background, simplest method is to become more normalization by patrolling and examining, monitor some line node or residual current situations of user that residual current fault frequently occurs easily and flexibly, it is therefore necessary to design the monitoring of a kind of portable residual current and the device reported to the police.
Summary of the invention
The purpose of this utility model is: provide a kind of patrol officer of convenience to carry and easy to use residual current fault alarms that can detect the residual current situation of some frequent line node that residual current fault occurs or user in rural power grids.
In order to solve above-mentioned technical problem, this utility model provides a kind of portable Rural Low-Voltage Power Network residual current fault alarm, including shell, mutual inductor coil, I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor, alarm and power module；Mutual inductor coil is loop configuration, and is arranged on the outside of shell；I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor and power module may be contained within the inside of shell；Alarm is arranged on the front panel of shell；The current output terminal of mutual inductor coil is connected with the input of I/V change-over circuit；The outfan of I/V change-over circuit is connected with the input of voltage follow amplifying circuit；The outfan of voltage follow amplifying circuit is connected with the input of rectification filtering module；The outfan of rectification filtering module is connected with the input port of A/D change-over circuit；The outfan of A/D change-over circuit is connected with the input port of microprocessor；The output port of microprocessor is connected with alarm；Power module is that I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor and alarm are powered.
I/V change-over circuit, rectification filtering module and amplification acquisition module is used to be processed by the current signal of mutual inductor coil collection, thus obtain the signal of telecommunication being easy to microprocessor processes, compared by the threshold value of microprocessor with setting again, if exceeding threshold value, controlling alarm and reporting to the police, be effectively increased patrol officer to the detection efficiency of residual current in circuit；Use I/V change-over circuit the small and weak current signal of mutual inductor coil collection can be converted to voltage signal, it is simple to the process collection of subsequent conditioning circuit；Use voltage follow amplifying circuit can the weak voltage signals that obtain after conversion be amplified, thus meet the low-voltage circuit to rural power grids and be acquired detection；Rectification filtering module is used to be capable of rectification and the Filtering Processing of the signal of telecommunication, to remove the noise in the signal of telecommunication；Use and each component is arranged on inside and outside shell, thus facilitate patrol officer to carry detection, effectively enhance the convenience of use.
As further restriction scheme of the present utility model, it is additionally provided with a memorizer being connected with the input/output port of microprocessor in the enclosure；Power module is that memorizer is powered.Use memorizer can the time that residual current value and residual current alarm event occur be stored, facilitate later stage patrol officer to derive and check.
As further restriction scheme of the present utility model, the front panel of shell is additionally provided with a display screen being connected with the display port of microprocessor；Power module is that display screen is powered.Use display screen can facilitate the residual current size showing current detection circuit in real time.
As further restriction scheme of the present utility model, the front panel of shell is additionally provided with a green indicating lamp being connected with the output port of microprocessor；Power module is that green indicating lamp is powered.The residual current value of current detection circuit is not above the danger threshold set to use green indicating lamp to show intuitively.
As further restriction scheme of the present utility model, rectification filtering module includes rectification circuit and the filter circuit being serially connected；The input of rectification circuit is connected to the outfan of voltage follow amplifying circuit；The outfan of filter circuit is connected to the input of A/D change-over circuit.
As further restriction scheme of the present utility model, alarm includes buzzer and red led；Buzzer is all connected with the output port of microprocessor with red led.Use buzzer and red led can carry out sound and light alarm when residual current value current line being detected exceedes the danger threshold of setting, it is simple to patrol officer watches.
The beneficial effects of the utility model are: (1) uses I/V change-over circuit, rectification filtering module and amplification acquisition module to be processed by the current signal of mutual inductor coil collection, thus obtain the signal of telecommunication being easy to microprocessor processes, compared by the threshold value of microprocessor with setting again, if exceeding threshold value, controlling alarm and reporting to the police, be effectively increased patrol officer to the detection efficiency of residual current in circuit；(2) I/V change-over circuit is used the small and weak current signal of mutual inductor coil collection can be converted to voltage signal, it is simple to the process collection of subsequent conditioning circuit；(3) use voltage follow amplifying circuit can the weak voltage signals that obtain after conversion be amplified, thus meet the low-voltage circuit to rural power grids and be acquired detection；(4) rectification filtering module is used to be capable of rectification and the Filtering Processing of the signal of telecommunication, to remove the noise in the signal of telecommunication；(5) each component is arranged on inside and outside shell by employing, thus facilitates patrol officer to carry detection, effectively enhances the convenience of use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is electrical block diagram of the present utility model.
In figure: 1, shell, 2, mutual inductor coil, 3, display screen, 4, red led, 5, green indicating lamp, 6, buzzer.
Detailed description of the invention
As illustrated in fig. 1 and 2, portable Rural Low-Voltage Power Network residual current fault alarm of the present utility model includes: shell 1, mutual inductor coil 2, I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor, alarm and power module.
Wherein, mutual inductor coil 2 is loop configuration, and is arranged on the outside of shell 1；I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor and power module may be contained within the inside of shell 1；Alarm is arranged on the front panel of shell 1；The current output terminal of mutual inductor coil 2 is connected with the input of I/V change-over circuit；The outfan of I/V change-over circuit is connected with the input of voltage follow amplifying circuit；The outfan of voltage follow amplifying circuit is connected with the input of rectification filtering module；The outfan of rectification filtering module is connected with the input port of A/D change-over circuit；The outfan of A/D change-over circuit is connected with the input port of microprocessor；The output port of microprocessor is connected with alarm；Power module is that I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor and alarm are powered.
In order to the time that residual current value and residual current alarm event occur stores, facilitate later stage patrol officer to derive and check, in shell 1, be additionally provided with a memorizer being connected with the input/output port of microprocessor；Power module is that memorizer is powered.
In order to the convenient residual current size showing current detection circuit in real time, the front panel of shell 1 is additionally provided with a display screen 3 being connected with the display port of microprocessor；Power module is that display screen 3 is powered.
In order to show that the residual current value of current detection circuit is not above the danger threshold set intuitively, the front panel of shell 1 is additionally provided with a green indicating lamp 5 being connected with the output port of microprocessor；Power module is that green indicating lamp 5 is powered.
In order to realize rectification and the Filtering Processing of the signal of telecommunication, to remove the noise in the signal of telecommunication, rectification filtering module includes rectification circuit and the filter circuit being serially connected；The input of rectification circuit is connected to the outfan of voltage follow amplifying circuit；The outfan of filter circuit is connected to the input of A/D change-over circuit.
In order to carry out sound and light alarm when residual current value current line being detected exceedes the danger threshold of setting, it is simple to patrol officer watches, alarm includes buzzer 6 and red led 4；Buzzer 6 is all connected with the output port of microprocessor with red led 4.
In portable Rural Low-Voltage Power Network residual current fault alarm of the present utility model: power module is made up of the battery of 4 joint 1.2V nickel chromium triangles, exports a 4.8V supply voltage, and can repeatedly charge；I/V change-over circuit, voltage follow amplifying circuit, rectification circuit, filter circuit and A/D change-over circuit all use available circuit to realize；Shell 1 is cabinet, it is simple to patrol officer is hand-held to carry, and can protect internal circuit；Mutual inductor coil 2 is the cirque structure of closed type, and long-term placement is difficult to lose.
The workflow of portable Rural Low-Voltage Power Network residual current fault alarm of the present utility model is:
(1) mutual inductor coil 2 of this residual current fault alarm is entangled the line of any three-phase/uniline, thus current phasor is measured, by mutual inductor coil 2 output current signal；
(2) by I/V change-over circuit, small and weak current signal is converted to small and weak voltage signal；
(3) by voltage follow amplifying circuit, small and weak voltage signal is followed and processing and amplifying；
(4) by rectification circuit to following and the voltage signal of processing and amplifying carries out rectification process；
(5) by filter circuit, the voltage signal that rectification is complete is filtered, to reach to remove the purpose of noise；
(6) ADC of the voltage signal input microprocessor after filtering and noise reduction is carried out analog digital conversion；
(7) by microprocessor, the data gathered are judged, if it exceedes the danger threshold of setting, microprocessor touches alarm, and (red led 4 flashes, buzzer 6 sends chimes of doom), if less than the danger threshold set, microprocessor controls green indicating lamp 5 and lights；
(8) patrol officer checks the residual current value shown by display screen 3 when observing warning phenomenon, and investigates current detection circuit.
Above-described embodiment only describes the principle and advantage of this alarm, does not limit to the use field of this alarm.Not violating on the premise of the present invention designs original intention, alarm can improve the most according to the actual requirements.
Claims (6)
1. a portable Rural Low-Voltage Power Network residual current fault alarm, it is characterised in that: include shell (1), mutual inductor coil (2), I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor, alarm and power module；Mutual inductor coil (2) is loop configuration, and is arranged on the outside of shell (1)；I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor and power module may be contained within the inside of shell (1)；Alarm is arranged on the front panel of shell (1)；The current output terminal of mutual inductor coil (2) is connected with the input of I/V change-over circuit；The outfan of I/V change-over circuit is connected with the input of voltage follow amplifying circuit；The outfan of voltage follow amplifying circuit is connected with the input of rectification filtering module；The outfan of rectification filtering module is connected with the input port of A/D change-over circuit；The outfan of A/D change-over circuit is connected with the input port of microprocessor；The output port of microprocessor is connected with alarm；Power module is that I/V change-over circuit, voltage follow amplifying circuit, rectification filtering module, A/D change-over circuit, microprocessor and alarm are powered.
Portable Rural Low-Voltage Power Network residual current fault alarm the most according to claim 1, it is characterised in that: in shell (1), it is additionally provided with a memorizer being connected with the input/output port of microprocessor；Power module is that memorizer is powered.
Portable Rural Low-Voltage Power Network residual current fault alarm the most according to claim 1 and 2, it is characterised in that: on the front panel of shell (1), it is additionally provided with a display screen being connected with the display port of microprocessor (3)；Power module is display screen (3) power supply.
Portable Rural Low-Voltage Power Network residual current fault alarm the most according to claim 1 and 2, it is characterised in that: on the front panel of shell (1), it is additionally provided with a green indicating lamp being connected with the output port of microprocessor (5)；Power module is green indicating lamp (5) power supply.
Portable Rural Low-Voltage Power Network residual current fault alarm the most according to claim 1 and 2, it is characterised in that: rectification filtering module includes rectification circuit and the filter circuit being serially connected；The input of rectification circuit is connected to the outfan of voltage follow amplifying circuit；The outfan of filter circuit is connected to the input of A/D change-over circuit.
Portable Rural Low-Voltage Power Network residual current fault alarm the most according to claim 1 and 2, it is characterised in that: alarm includes buzzer (6) and red led (4)；Buzzer (6) is all connected with the output port of microprocessor with red led (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306112.4U CN205506927U (en) | 2016-04-13 | 2016-04-13 | Portable rural power grids low pressure residual current malfunction alerting ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306112.4U CN205506927U (en) | 2016-04-13 | 2016-04-13 | Portable rural power grids low pressure residual current malfunction alerting ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205506927U true CN205506927U (en) | 2016-08-24 |
Family
ID=56714537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620306112.4U Expired - Fee Related CN205506927U (en) | 2016-04-13 | 2016-04-13 | Portable rural power grids low pressure residual current malfunction alerting ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205506927U (en) |
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2016
- 2016-04-13 CN CN201620306112.4U patent/CN205506927U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20170413 |