CN208833834U - Residual current monitors system - Google Patents
Residual current monitors system Download PDFInfo
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- CN208833834U CN208833834U CN201821337422.8U CN201821337422U CN208833834U CN 208833834 U CN208833834 U CN 208833834U CN 201821337422 U CN201821337422 U CN 201821337422U CN 208833834 U CN208833834 U CN 208833834U
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- residual current
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Abstract
The utility model is suitable for current monitoring technique field, provides a kind of residual current monitoring system.The system comprises: processor, residual current detection unit, first sampling channel handoff manager, residual current transformer, temperature sensor, second sampling channel handoff manager, temperature detecting unit and alarm, residual current transformer connects the first sampling channel handoff manager, first sampling channel handoff manager connects residual current detection unit, residual current detection unit connects processor, temperature sensor connects the second sampling channel handoff manager, second sampling channel handoff manager connects temperature detecting unit, temperature detecting unit connects processor, processor connects alarm.After adopting the above scheme, the appearance for situations such as reducing human electric shock, leakage of current generation fire and equipment ground failure, has ensured the safe and stable operation of personal safety and circuit.
Description
Technical field
The utility model belongs to current monitoring technique field more particularly to a kind of residual current monitoring system.
Background technique
Residual current is also known as Leakage Current or leakage current, refers to without voltage is applied, and electrical middle band is mutually exhausted
Between the metal parts of edge, or between electrical accessory and ground connection part, electricity is formed by by its surrounding medium or insulating surface
Stream claims, that is, each electric current phase (containing the neutral conductor) current phasor and be not zero in low-voltage distributing line.
The common fire of leakage of current generation and the ground connection event of equipment caused by human electric shock, aging circuit occurs
Barrier is all since residual current causes, and then generally all very little, traditional switch can not be protected residual current value, is pacified to the person
Complete and circuit stable operation causes threat.
Utility model content
In view of this, the utility model embodiment provides a kind of residual current monitoring system, to solve in the prior art
Generally all very little, traditional switch can not be protected residual current value, cause prestige to the stable operation of personal safety and circuit
The problem of side of body.
The utility model embodiment provides a kind of residual current monitoring system, comprising: processor, residual current detection list
Member, the first sampling channel handoff manager, residual current transformer, temperature sensor, the second sampling channel handoff manager, temperature
Degree detection unit and alarm, the residual current transformer connection the first sampling channel handoff manager, described first
Sampling channel handoff manager connects the residual current detection unit, and the residual current detection unit connects the processing
Device, the temperature sensor connect the second sampling channel handoff manager, and the second sampling channel handoff manager connects
The temperature detecting unit is connect, the temperature detecting unit connects the processor, and the processor connects the alarm.
As further technical solution, the alarm includes the first alarm and the second alarm, the processor
Connect first alarm and second alarm.
As further technical solution, the alarm include phonetic alarm, buzzer siren, vibration alarm and
Any one or more in smoke alarm.
As further technical solution, the system also includes key, the key include reset key, number key, on
Key, downturning key, ventil and acknowledgement key are turned over,
The signal that the processor triggers when being opened according to the reset key is by the residual current detection unit, described
One sampling channel handoff manager, the residual current transformer and the alarm reset；
The signal that the processor triggers when being opened according to the number key selectes digital value；
The signal that the processor is sent when being opened according to the upturning key controls the first sampling channel handover management
Device switches up residual current transformer；
The signal that the processor is sent when being opened according to the downturning key controls the first sampling channel handover management
Device switches downwards residual current transformer；
The signal that the processor is sent when being opened according to the ventil controls the alarm stop alarm；
The operation for the signal confirmation triggering that the processor is sent when being opened according to the acknowledgement key.
As further technical solution, the system also includes display module, the processor connects the display mould
Block.
As further technical solution, the system also includes indicator light, the processor connects the indicator light.
As further technical solution, the quantity of the residual current transformer is 1-8.
As further technical solution, the quantity of the temperature sensor is 1-8.
As further technical solution, the residual current detection unit includes filter circuit, amplifying circuit and detection
Circuit, the first sampling channel handoff manager connect the filter circuit, and the filter circuit connects the amplifying circuit,
The amplifying circuit connects the detection circuit, and the detection circuit connects the processor.
As further technical solution, the model STC12C5A32S2 of the processor.
The utility model embodiment has the beneficial effect that after adopting the above scheme, and it is real-time to pass through residual current transformer
Residual current is monitored, and judgement processing is carried out by processor, if being more than preset standard value, sends the progress of the first alarm
Alarm reduces human electric shock, leakage of current generates fire and equipment ground event to remind staff to handle in time
The appearance of situations such as barrier has ensured the safe and stable operation of personal safety and circuit.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of residual current monitoring system provided by the embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram for residual current monitoring system that another embodiment of the utility model provides.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model also may be implemented in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
As shown in Figure 1, for a kind of structural schematic diagram of residual current monitoring system provided by the embodiment of the utility model, packet
It includes: processor 1, residual current detection unit 2, the first sampling channel handoff manager 3, residual current transformer 4, temperature sensing
Device 6, the second sampling channel handoff manager 7, temperature detecting unit 8 and alarm 5, the residual current transformer 4 connect institute
The first sampling channel handoff manager 3 is stated, the first sampling channel handoff manager 3 connects the residual current detection unit
2, the residual current detection unit 2 connects the processor 1, and the temperature sensor 6 connects second sampling channel and cuts
Manager 7 is changed, the second sampling channel handoff manager 7 connects the temperature detecting unit 8, the temperature detecting unit 8
The processor 1 is connected, the processor 1 connects the alarm 5.
Specifically, the residual current signal that residual current transformer will test is converted into weak voltage signal by amplitude limiting processing
Enter the first sampling channel handoff manager afterwards, is examined according to the residual current that the control instruction of processor 1 is switched to corresponding detection
Unit 2 is surveyed, i.e. processor is sent into residual current circuit, it is preferred that residual current transformer can have multiple, and processor has been handled
After the residual current in present sample channel, the first sampling channel manager of control is switched to next channel that should be sampled, and handles
Device carries out alarm decision processing to residual current real value.Temperature real value takes similar treatment process, temperature detecting unit 8
Enter the second sampling channel handoff manager 7 after the platinum resistance thermometer sensor, temperature resistance value signal detected is converted into weak voltage signal,
It is switched to the temperature loop of corresponding detection according to the control instruction of processor, processor is sent into after filter amplifying processing, handles
After device is sampled, A/D is converted and filtering operation, the temperature real value in present sample channel is saved, it is preferred that temperature
Sensor 6 can have multiple, and multiple temperature sensors connect the second sampling channel handoff manager 7, and CPU has handled present sample
After the residuals temperatures in channel, control sampling channel manager is switched to next channel that should be sampled.When detecting residual current
After real value or temperature real value reach preset alarming value, and the time is greater than the alarm delay time of setting, send
Alarm command keeps to hand-reset or electrical fire monitoring device resetting to alarm 5.When processor detect currently with
The residual current transformer of sampling channel connection occurs broken string or is shorted, and alarm is sent when still remaining through repeated detection failure and is referred to
It enables to alarm, and keeps to fault recovery；When processor detects that the temperature sensor currently connecting with sampling channel occurs
When broken string or short circuit, acoustic-optical fault signal is issued when still remaining through repeated detection failure, and keep to fault recovery.It is preferred that
, repeated detection is to detect three times, and warning message, fault message etc. can also be uploaded to the electrical of external fire protection control room
Fire hazard monitoring equipment.
Temperature detecting unit 8 enters the second sampling channel after the temperature resistance value signal detected is converted into weak voltage signal
Handoff manager 7, it is preferred that temperature detecting unit 8 is temperature sensor, is switched to corresponding inspection according to the control instruction of processor
The temperature loop of survey is sent into processor after filter amplifying processing, and processor is sampled, A/D is converted and after being filtered, will
The temperature real value in present sample channel is saved, and after the residual current and the temperature that have handled present sample channel, control is adopted
Sample channel manager is switched to next channel that should be sampled, and whether real-time judge temperature value is more than preset standard temperature value, if
Do not continue then to monitor, if so, being then marked, then staff is reminded to handle in time.
In addition, as shown in Fig. 2, the alarm 5 includes the first alarm 51 and the second alarm in a specific example
Device 52, the processor 1 connect first alarm 51 and second alarm 52.
Specifically, processor 1 detects residual current real value, when detecting that residual current real value reaches preparatory
The alarming value of setting, and after alarm delay time of the time greater than setting, transmission alarm command to the first alarm 51, so that
First alarm 51 alarm, when processor detects that the residual current transformer that currently connect with sampling channel occurs to break or short
It connects, alarm command is sent when still remaining through repeated detection failure to the first alarm 51, and keep to fault recovery, preferably
, it may be configured as detecting through 3 times, warning message, fault message etc. can also be uploaded to the electrical of external fire protection control room
Fire hazard monitoring equipment.
When detecting that temperature real value reaches preset alarming value, and the time is greater than the alarm delay time of setting
Afterwards, alarm command is sent to the second alarm 52, and keeps to hand-reset or electrical fire monitoring device resetting.Work as processor
Detect that the temperature sensor currently connecting with sampling channel occurs broken string or is shorted, hair when still remaining through repeated detection failure
It send alarm command to the second alarm 52, and keeps to fault recovery；It is currently connect with sampling channel when processor detects
When temperature sensor occurs broken string or is shorted, acoustic-optical fault signal is issued when still remaining through repeated detection failure, and keep extremely
Fault recovery.Preferably, repeated detection is to detect three times, and warning message, fault message etc. can also be uploaded to external disappear
The electrical fire monitoring device of anti-control room.
In addition, the alarm includes phonetic alarm, buzzer siren, vibration alarm in a specific example
With any one or more in smoke alarm, a variety of type of alarms are selected for staff, and staff can be according to reality
The work requirements on border and the use habit of itself are selected, and the success rate of alarm is improved.
In addition, in a specific example, the difference that the type of alarm of the first alarm and the second alarm can be set,
It is that staff can directly identify according to type of alarm for which kind of failure.
In addition, as shown in Fig. 2, the system also includes key, the key includes reset key in a specific example
10, number key 11, upturning key 12, downturning key 13, ventil 14 and acknowledgement key 15,
The signal that the processor triggers when being opened according to the reset key is by the residual current detection unit, described
One sampling channel handoff manager, the residual current transformer and the alarm reset.
The signal that the processor triggers when being opened according to the number key selectes digital value, and number key includes 0-9 number
Key further includes decimal key.
The signal that the processor is sent when being opened according to the upturning key controls the first sampling channel handover management
Device switches up residual current transformer, and residual current transformer can have multiple, is all connected to the first sampling channel switching pipe
It manages on device, each residual current transformer is numbered in order, and the residual current for being switched to a upper number according to number is mutual
Sensor.
The signal that the processor is sent when being opened according to the downturning key controls the first sampling channel handover management
Device switches downwards residual current transformer, and residual current transformer can have multiple, is all connected to the first sampling channel switching pipe
It manages on device, each residual current transformer is numbered in order, and the residual current for being switched to next number according to number is mutual
Sensor.
The signal that the processor is sent when being opened according to the ventil controls the first alarm stop alarm.Separately
Outside, ventil can also include the first ventil and the second ventil, and the processor is sent when being opened according to the second ventil
Signal control the second alarm stop alarm.
The operation for the signal confirmation triggering that the processor is sent when being opened according to the acknowledgement key, for example, staff
Number key is triggered, string number is had input, then determines that input is completed by triggering acknowledgement key.
In addition, as shown in Fig. 2, in a specific example, the system also includes display module 16, the processor 1
The display module 16 is connected, touring display can be carried out to residual current real value, temperature real value, it can also be to can be dynamic to alarm
Work value, disconnection fault code are shorted error code, liquid crystal self-test, residual current alarm setting value, temperature alarming setting value, alarm and prolong
When setting value, address code, user's setting code etc. show that display module 16 can be touch display screen, it is preferred that
In the environment of illumination < 5001x, at the 0.8m of front, high-visible in 22.5 ° of angulars field of view.
In addition, as shown in Fig. 2, the system also includes indicator light 17, the processor 1 connects in a specific example
Connect the indicator light 17, indicator light 17 can there are many colors to show different states, for example, having operating status (green
Color), alarm condition (red), malfunction (yellow), communication state (green), mute state (blue), current status it is (green
Color), state of temperature (green), multiple indicator lights such as multiple circuits, it is preferred that indicator light is high-brightness LED lamp, and high-brightness LED lamp refers to
Showing can be high-visible at the 3m of front in illumination < 5001x, meets various illumination conditions.Multiple highlighted LED lights point
Not by distribution line normal operating condition, improper alarm condition, residual current transformer or temperature sensor Wiring faults, spy
Device is surveyed to refer to monitoring host computer communication state, alarm or failure acoustical signal elimination state, the instruction of current residual electric current, Current Temperatures
Show, the instruction of the information such as the currently monitored circuit it is clear, greatly facilitate live fire fighter and route and equipment run
The judgement of state.
In addition, the quantity of the residual current transformer is 1-8 in a specific example.
In addition, the quantity of the temperature sensor is 1-8 in a specific example.
In addition, the residual current detection unit includes filter circuit, amplifying circuit and detection in a specific example
Circuit, the first sampling channel handoff manager connect the filter circuit, and the filter circuit connects the amplifying circuit,
The amplifying circuit connects the detection circuit, and the detection circuit connects the processor, to the residue in present sample channel
The weak voltage signal of electric current is filtered, blocking, enhanced processing, then is sent into single-chip microcontroller sample port, detection after carrying out secondary filtering
The Wiring faults signal of current channel residual current transformer, and fault-signal is sent into single-chip microcontroller sample port, to current logical
Road residual current AC signal zero crossing point is acquired, and is sent into processor external interrupt port, is examined for existing residual current
Survey unit.
Temperature detecting unit can be temperature sensing circuit, carry out to the weak voltage signal of the temperature of Current Temperatures sampling channel
Processor sample port, the Wiring faults letter of detection current channel temperature sensor are sent into filtering, amplification after secondary filtering again
Number, and fault-signal is sent into processor sample port, it is existing temperature sensing circuit.
In addition, in a specific example, the model STC12C5A32S2 of the processor.
In addition, further including high interference immunity wide range electric power circuit, using 220V/50Hz alternating current in a specific example
Source power supply, and can be worked normally under the conditions of supply voltage is AC 187V and AC 242V, and have radiofrequency field radiation, radiofrequency field
The electromagnetism anti-interference ability such as conduction, electrical fast transient (eft), electrical strength, lightning surge, respectively processor, residual current
Detection unit, the first sampling channel handoff manager, residual current transformer, alarm, temperature sensor, the second sampling channel
Handoff manager, temperature detecting unit, reset key, number key, upturning key, downturning key, ventil, acknowledgement key, display module and
Indicator light power supply, alarm include the first alarm and the second alarm.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, without cope with the utility model embodiment implementation process constitute it is any
It limits.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to before
Embodiment is stated the utility model is described in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of residual current monitors system characterized by comprising processor, residual current detection unit, the first sampling are logical
Road handoff manager, residual current transformer, temperature sensor, the second sampling channel handoff manager, temperature detecting unit and
Alarm, the residual current transformer connect the first sampling channel handoff manager, the first sampling channel switching
Manager connects the residual current detection unit, and the residual current detection unit connects the processor, and the temperature passes
Sensor connects the second sampling channel handoff manager, and the second sampling channel handoff manager connects the temperature detection
Unit, the temperature detecting unit connect the processor, and the processor connects the alarm.
2. residual current according to claim 1 monitors system, which is characterized in that the alarm includes the first alarm
With the second alarm, the processor connects first alarm and second alarm.
3. residual current according to claim 1 monitors system, which is characterized in that the alarm includes audio alert
Any one or more in device, buzzer siren, vibration alarm and smoke alarm.
4. residual current according to claim 1 monitors system, which is characterized in that further include key, the key includes
Reset key, number key, upturning key, downturning key, ventil and acknowledgement key,
The signal that the processor triggers when being opened according to the reset key adopts the residual current detection unit, described first
Sample channel handoff manager, the residual current transformer and the alarm reset；
The signal that the processor triggers when being opened according to the number key selectes digital value；
Signal that the processor is sent when being opened according to the upturning key control the first sampling channel handoff manager to
Upper switching residual current transformer；
Signal that the processor is sent when being opened according to the downturning key control the first sampling channel handoff manager to
Lower switching residual current transformer；
The signal that the processor is sent when being opened according to the ventil controls the alarm stop alarm；
The operation for the signal confirmation triggering that the processor is sent when being opened according to the acknowledgement key.
5. residual current according to claim 1 monitors system, which is characterized in that it further include display module, the processing
Device connects the display module.
6. residual current according to claim 1 monitors system, which is characterized in that it further include indicator light, the processor
Connect the indicator light.
7. residual current according to claim 1 monitors system, which is characterized in that the quantity of the residual current transformer
It is 1-8.
8. residual current according to claim 1 monitors system, which is characterized in that the quantity of the temperature sensor is 1-
8.
9. residual current according to claim 1 monitors system, which is characterized in that the residual current detection unit includes
Filter circuit, amplifying circuit and detection circuit, the first sampling channel handoff manager connect the filter circuit, the filter
Wave circuit connects the amplifying circuit, and the amplifying circuit connects the detection circuit, and the detection circuit connects the processing
Device.
10. residual current according to claim 1 monitors system, which is characterized in that the model of the processor
STC12C5A32S2。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821337422.8U CN208833834U (en) | 2018-08-17 | 2018-08-17 | Residual current monitors system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821337422.8U CN208833834U (en) | 2018-08-17 | 2018-08-17 | Residual current monitors system |
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| CN208833834U true CN208833834U (en) | 2019-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933669A (en) * | 2021-12-17 | 2022-01-14 | 江苏安世朗智能科技有限公司 | Intelligent insulation detection system for online IT system |
-
2018
- 2018-08-17 CN CN201821337422.8U patent/CN208833834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933669A (en) * | 2021-12-17 | 2022-01-14 | 江苏安世朗智能科技有限公司 | Intelligent insulation detection system for online IT system |
| CN113933669B (en) * | 2021-12-17 | 2022-03-11 | 江苏安世朗智能科技有限公司 | Intelligent insulation detection system for online IT system |
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