CN108508258A - Monitoring system - Google Patents
Monitoring system Download PDFInfo
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- CN108508258A CN108508258A CN201710111838.1A CN201710111838A CN108508258A CN 108508258 A CN108508258 A CN 108508258A CN 201710111838 A CN201710111838 A CN 201710111838A CN 108508258 A CN108508258 A CN 108508258A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 32
- 230000005611 electricity Effects 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of monitoring systems, are related to electrical equipment, have achieved the purpose that a kind of current monitoring system that accuracy that is cheap, being easily achieved is high of offer.The present invention main technical schemes be：A kind of monitoring system, including：Equipment；Converter section, including current transformer and current transducer, one end of the current transformer is connected to the equipment, the other end is connected to the current transducer, the current transformer is used to the device current becoming smaller output to the current transducer, and the current transducer becomes smaller electric current is secondary；Receiving part, the receiving part are connected to the current transducer, the output current for receiving the current transducer.Present invention is mainly used for supervision equipment operations.
Description
Technical field
The present invention relates to electrical equipment more particularly to a kind of monitoring systems.
Background technology
Nowadays, the long-range current monitoring technology of power-equipment can be all used in the electrical automation system of all trades and professions, but
It is since modern large scale industry scale is increasing, distance of the current surveillance instrument apart from power distribution equipment is more and more remoter.This causes
Cable length between current detecting instrument and power distribution equipment extends to hundreds of meters of even longer, cables by more than ten meters, tens meters
Impedance also greatly increases, cause finally to monitor to current values have very large deviation, be unable to reach the purpose of current monitoring.
In the prior art, the electrical loss of cable has direct relation with resistance, therefore is typically the side that selection reduces resistance
Formula makes the realization reduce the electrical loss of cable, and the size of cable resistance is related with material, length, sectional area and temperature, by
Certain in the length of cable, operating ambient temperature is stablized, so mainly changing in selection and sectional area, however, being resistance
The low material of rate or overstriking cable, are required for more costs, and for production, this is all not-so-practical.Therefore,
A kind of cheap mode is needed to increase the accuracy of current monitoring.
Invention content
In view of this, the embodiment of the present invention provides a kind of monitoring system, main purpose is to provide a kind of cheap, easy
In the high current monitoring system of the accuracy of realization.
In order to achieve the above objectives, present invention generally provides following technical solutions：
On the one hand, an embodiment of the present invention provides a kind of monitoring systems, including：
Equipment；
One end of converter section, including current transformer and current transducer, the current transformer is connected to the equipment,
The other end is connected to the current transducer, and the current transformer is used to the device current becoming smaller output to the electric current
Transmitter, the current transducer become smaller electric current is secondary；
Receiving part, the receiving part are connected to the current transducer, the output electricity for receiving the current transducer
Stream.
Further, the receiving part includes ammeter.
Further, the receiving part further includes current sensor, and one end of the current sensor is connected to the electricity
Flow table, the other end are connected to the equipment, when the output current of the current transducer is more than the default of the current sensor
When value, the current sensor is adjusted equipment.
Further, the receiving part further includes that (i.e. Programmable Logic Controller may be programmed and patrol PLC
Collect controller), one end of the PLC is connected to the ammeter, and the other end is connected to the equipment, when the current transducer
Output current when being more than the preset value of the PLC, the PLC is adjusted equipment.
Further, the receiving part includes digital analog converter and computer, and one end of the digital analog converter is connected to institute
Computer is stated, the other end is connected to the current transducer, and the digital analog converter turns the output current of the current transducer
It is changed to digital signal, is transferred to the computer.
Further, including alarm, the alarm are connected to the receiving part, when the output of the current transducer
When electric current is more than the preset value of the receiving part, the alarm starts；When the output current of the current transducer returns to institute
When stating the preset value of receiving part, the alarm is closed.
Further, further include air switch, the air switch is arranged between the equipment and the converter section, uses
In the protection converter section and the receiving part.
A kind of monitoring system that the embodiment of the present invention proposes, including：Equipment, converter section and receiving part；Wherein converter section packet
Current transformer and current transducer are included, one end of current transformer is connected to equipment, and the other end is connected to current transducer, electricity
Current transformer is used to device current becoming smaller output to current transducer, and current transducer becomes smaller electric current is secondary；Receiving part is then
It is connected to current transducer, the output current for receiving current transducer.Conventionally, as cable growth leads to electricity
Resistance increases so that the electrical loss of cable increases, and in order to obtain more accurately measured value, typically selects the lower material of resistivity
Material makes cable, or increases the sectional area of cable, to reduce the resistance of cable, and then reduces electrical loss, but make in this way
Production cost is obtained to be substantially increased, it can not extensive use in actual production.And after using current transformer and current transducer, it can
Will flow through the high-voltage large current alternating current of equipment, general low-voltage AC electricity is first become by current transformer, finally by
Current transducer is converted to the direct current of low-voltage low current, will finally be controlled from the output current of current transducer in 0 to 5 volts
Spy, 4 to 20 milliamperes, electric current small in this way makes the pressure drop very little of cable, electrical loss very faint so that the information of receiving part is very smart
Standard, while such system replaces cable without large-scale, can effectively control production cost.Can be had using the present invention
The operation conditions of monitoring device is imitated, be whether used to record data or is used to that equipment to be made to keep good operation conditions, it can
It is enough because receiving part receive data it is accurate due to obtain good effect.
Description of the drawings
Fig. 1 is a kind of monitoring system structural schematic diagram provided in an embodiment of the present invention；
Fig. 2 is another monitoring system structural schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
It is of the invention to reach the technological means and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to monitoring system specific implementation mode, structure, feature and its effect proposed according to the present invention, in detail
It describes in detail bright as after.
As shown in Figure 1, an embodiment of the present invention provides a kind of monitoring systems, including：
Equipment 1；Above equipment 1 can be motor, can also be water pump, can be with specific reference to the demand of Plant supervisory
It is different equipment 1, as long as the equipment 1 of electricity consumption, can use above-mentioned monitoring system.
Converter section 2, including current transformer 21 and current transducer 22, one end of above-mentioned current transformer 21 are connected to
Equipment 1 is stated, the other end is connected to above-mentioned current transducer 22, and above-mentioned current transformer 21 is for becoming smaller 1 electric current of above equipment
It exports to above-mentioned current transducer 22, above-mentioned current transducer 22 becomes smaller electric current is secondary；Use 21 energy of above-mentioned current transformer
Enough high-voltage large current alternating currents for exporting above equipment 1, are converted to low-voltage low current alternating current, but electric current at this time is still
It is old that cable can be made to generate larger pressure drop so that the electrical loss on cable is higher.And above-mentioned current transducer 22 is reused, it can be with
So that the low-voltage low current alternating current that above-mentioned current transformer 21 exports is converted again, becomes low-voltage micro-current direct current
Electricity, finally so that the output current of above-mentioned current transducer 22 is controlled at 0 to 5 volts, 4 to 20 milliamperes, since electric current is very micro-
It is weak, according to electrical loss formula, square proportional, the electric current and its faint, therefore electrical loss at this time of electrical loss and electric current
Minimum, the information received for final above-mentioned receiving part is very accurate.
Receiving part, above-mentioned receiving part are connected to above-mentioned current transducer 22, for receiving the defeated of above-mentioned current transducer 22
Go out electric current.Different above-mentioned receiving parts can be used according to different needs.
Below by way of the working process and principle of monitoring system in the present embodiment, the monitoring system in the present embodiment is illustrated
System：
It is small to be converted to low-voltage by above-mentioned current transformer 21 for the output HIGH voltage high current alternating current of above equipment 1
Electric current alternating current is converted into low-voltage micro-current direct current using above-mentioned current transformer 21, above-mentioned by long distance transmission
Receiving part receives current signal.
A kind of monitoring system that the embodiment of the present invention proposes, including：Equipment, converter section and receiving part；Wherein converter section packet
Current transformer and current transducer are included, one end of current transformer is connected to equipment, and the other end is connected to current transducer, electricity
Current transformer is used to device current becoming smaller output to current transducer, and current transducer becomes smaller electric current is secondary；Receiving part is then
It is connected to current transducer, the output current for receiving current transducer.Conventionally, as cable growth leads to electricity
Resistance increases so that the electrical loss of cable increases, and in order to obtain more accurately measured value, typically selects the lower material of resistivity
Material makes cable, or increases the sectional area of cable, to reduce the resistance of cable, and then reduces electrical loss, but make in this way
Production cost is obtained to be substantially increased, it can not extensive use in actual production.And after using current transformer and current transducer, it can
Will flow through the high-voltage large current alternating current of equipment, general low-voltage AC electricity is first become by current transformer, finally by
Current transducer is converted to the direct current of low-voltage low current, will finally be controlled from the output current of current transducer 0 to volt
Spy, to 0 milliampere, electric current small in this way makes the pressure drop very little of cable, electrical loss very faint so that the information of receiving part is very smart
Standard, while such system replaces cable without large-scale, can effectively control production cost.Can be had using the present invention
The operation conditions of monitoring device is imitated, be whether used to record data or is used to that equipment to be made to keep good operation conditions, it can
It is enough because receiving part receive data it is accurate due to obtain good effect.
The present invention is described in further detail with reference to the accompanying drawings and examples.
For that in most cases, only need to check the working condition of above equipment 1, therefore only need simple electric current instruction i.e.
Can, specifically, above-mentioned receiving part includes ammeter 3.Due to the operating condition for the above equipment 1 for needing to observe, according to demand may be used
It can need to observe multiple above equipments 1, therefore multiple above-mentioned monitoring systems can be used, be put at this point, above-mentioned ammeter 3 can be concentrated
It sets, facilitates checking for staff, without making an inspection tour in the factory always.
Due to monitoring above equipment 1 be in order to ensure that equipment 1 is in good working order, to ensure production efficiency,
In order to preferably regulate and control to equipment 1, specifically, above-mentioned receiving part further includes current sensor 4, above-mentioned current sense
One end of device 4 is connected to above-mentioned ammeter 3, and the other end is connected to above equipment 1, when the output current of above-mentioned current transducer 22
More than above-mentioned current sensor 4 preset value when, above-mentioned current sensor 4 is adjusted equipment 1.Use above-mentioned current sense
After device 4, the working condition of above equipment 1 can be automatically adjusted, without artificial continual monitoring so that the fortune of above equipment 1
Row is more intelligent so that the working strength of staff reduces, while the regulation and control of above equipment 1 are also more rapid, without work
Far place is gone to operate as personnel.
The size of current received sometimes according to above-mentioned ammeter 3 is different, needs to carry out a variety of different operations, specifically,
Above-mentioned receiving part further includes PLC (i.e. Programmable Logic Controller, programmable logic controller (PLC)), above-mentioned PLC
One end be connected to above-mentioned ammeter 3, the other end is connected to above equipment 1, when the output current of above-mentioned current transducer 22 is super
When crossing the preset value of above-mentioned PLC, above-mentioned PLC is adjusted equipment 1.Since above-mentioned PLC can be programmed, can locate simultaneously
Multi-group data is managed, therefore multiple above equipments 1 can be used the same above-mentioned PLC, on the one hand can be further reduced the cost,
Another aspect data are shown in the above equipment 1 of abnormal condition work, adjusted to be unable to get due effect, may cause
The reason of this 1 operation irregularity of above equipment be another associate device 1, through above-mentioned PLC judge, can to another associate device 1 into
Row adjustment is worked normally with the above equipment 1 that this enables abnormal condition to work so that entire Problem judgment is more intelligent
Change, while more quick, is adjusted between multiple above equipments 1 without manually hurrying back and forth.
As shown in Fig. 2, since electric current has electrical loss when being transmitted on cable, and pass through long distance transmission, even if electricity damage
Consumption is very faint, but final data how much is all made to have error, in order to make error smaller, specifically, above-mentioned receiving part includes number
One end of mode converter 5 and computer 6, above-mentioned digital analog converter 5 is connected to above-mentioned computer 6, and the other end is connected to above-mentioned electric current and becomes
It send device 22, above-mentioned digital analog converter 5 that the output current of above-mentioned current transducer 22 is converted to digital signal, is transferred to above-mentioned electricity
Brain 6.By above-mentioned digital analog converter 5 be arranged apart from above-mentioned current transducer 22 into place so that above-mentioned current transducer 22
The cable of the process of the electric current of output is shorter, and electrical loss is less, and is turned the analog signal of electric current by above-mentioned digital analog converter 5
It changes digital signal into, using long cable transmission, is conveyed to above-mentioned computer 6, and digital signal will not decline because of the length of cable
It is weak, it can more effectively ensure the accuracy for the data that above-mentioned computer 6 receives in this way.Above-mentioned computer 6 can be uninterrupted simultaneously
Monitor and record in real time the operating condition of above equipment 1, cooperation programming can also realize intelligent adjustment, additionally it is possible to mitigate
The work load of staff.
Since above equipment 1 generates the problem that endless, and the judgement of above-mentioned receiving part and settling mode have really
Limit, in order to make staff know, there is situation in above equipment 1, specifically, include alarm, above-mentioned alarm connection
In above-mentioned receiving part, when the output current of above-mentioned current transducer 22 is more than the preset value of above-mentioned receiving part, above-mentioned alarm
Start；When the output current of above-mentioned current transducer 22 returns to the preset value of above-mentioned receiving part, above-mentioned alarm is closed.In this way
On the one hand staff, equipment 1 can be reminded to break down, and to failure cause, fault time and failure after automatic repair
Frequency etc. is analyzed, and is more fully understood to have to above equipment 1, on the other hand can be prevented above-mentioned receiving part from can not solve
Certainly when problem so that even if staff rushes to artificial queueing problem, so that above equipment 1 can be put into normally as early as possible
In work.
The overwork of above equipment 1 or short circuit situation in order to prevent, specifically, further include air switch, it is above-mentioned
Air switch is arranged between above equipment 1 and above-mentioned converter section 2, for protecting above-mentioned converter section 2 and above-mentioned receiving part.Due to
The electric current that above-mentioned current transducer 22, above-mentioned ammeter 3 can input is limited, and excessive electric current can be to above-mentioned current transducer
22, above-mentioned ammeter 3 damages, and for this more sensitive device of above-mentioned current sensor 4, if the excessive possibility of electric current
Above-mentioned current sensor 4 can be damaged, and after using above-mentioned air switch, the overwork of above equipment 1 or circuit can be made short
Lu Shi disconnects circuit, to protect it is above-mentioned state current transducer 22, above-mentioned ammeter 3, above-mentioned current sensor 4 etc., simultaneously
Above-mentioned air switch may be reused, and can further save production cost, while also ing save maintenance cost.
A kind of monitoring system that the embodiment of the present invention proposes, including：Equipment, converter section and receiving part；Wherein converter section packet
Current transformer and current transducer are included, one end of current transformer is connected to equipment, and the other end is connected to current transducer, electricity
Current transformer is used to device current becoming smaller output to current transducer, and current transducer becomes smaller electric current is secondary；Receiving part is then
It is connected to current transducer, the output current for receiving current transducer.Conventionally, as cable growth leads to electricity
Resistance increases so that the electrical loss of cable increases, and in order to obtain more accurately measured value, typically selects the lower material of resistivity
Material makes cable, or increases the sectional area of cable, to reduce the resistance of cable, and then reduces electrical loss, but make in this way
Production cost is obtained to be substantially increased, it can not extensive use in actual production.And after using current transformer and current transducer, it can
Will flow through the high-voltage large current alternating current of equipment, general low-voltage AC electricity is first become by current transformer, finally by
Current transducer is converted to the direct current of low-voltage low current, will finally be controlled from the output current of current transducer in 0 to 5 volts
Spy, 4 to 20 milliamperes, electric current small in this way makes the pressure drop very little of cable, electrical loss very faint so that the information of receiving part is very smart
Standard, while such system replaces cable without large-scale, can effectively control production cost.Can be had using the present invention
The operation conditions of monitoring device is imitated, be whether used to record data or is used to that equipment to be made to keep good operation conditions, it can
It is enough because receiving part receive data it is accurate due to obtain good effect.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of monitoring system, which is characterized in that including：
Equipment；
One end of converter section, including current transformer and current transducer, the current transformer is connected to the equipment, another
End is connected to the current transducer, and the current transformer is used to the device current becoming smaller output to the electric current pick-up
Device, the current transducer become smaller electric current is secondary；
Receiving part, the receiving part are connected to the current transducer, the output current for receiving the current transducer.
2. monitoring system according to claim 1, which is characterized in that the receiving part includes ammeter.
3. monitoring system according to claim 2, which is characterized in that the receiving part further includes current sensor, described
One end of current sensor is connected to the ammeter, and the other end is connected to the equipment, when the output of the current transducer
When electric current is more than the preset value of the current sensor, the current sensor is adjusted equipment.
4. monitoring system according to claim 2, which is characterized in that the receiving part further include PLC (i.e.
Programmable Logic Controller, programmable logic controller (PLC)), one end of the PLC is connected to the electric current
Table, the other end are connected to the equipment, described when the output current of the current transducer is more than the preset value of the PLC
PLC is adjusted equipment.
5. monitoring system according to claim 1, which is characterized in that the receiving part includes digital analog converter and computer,
One end of the digital analog converter is connected to the computer, and the other end is connected to the current transducer, the digital analog converter
The output current of the current transducer is converted into digital signal, is transferred to the computer.
6. according to the monitoring system described in any one of claim 3-5, which is characterized in that including alarm, the alarm
It is connected to the receiving part, when the output current of the current transducer is more than the preset value of the receiving part, the alarm
Device starts；When the output current of the current transducer returns to the preset value of the receiving part, the alarm is closed.
7. monitoring system according to claim 6, which is characterized in that further include air switch, the air switch setting
Between the equipment and the converter section, for protecting the converter section and the receiving part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710111838.1A CN108508258B (en) | 2017-02-28 | 2017-02-28 | Monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710111838.1A CN108508258B (en) | 2017-02-28 | 2017-02-28 | Monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108508258A true CN108508258A (en) | 2018-09-07 |
| CN108508258B CN108508258B (en) | 2024-05-17 |
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ID=63374050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710111838.1A Active CN108508258B (en) | 2017-02-28 | 2017-02-28 | Monitoring system |
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| GB201621000D0 (en) * | 2016-12-09 | 2017-01-25 | Haigh Group The Ltd | Device for monitoring an electrical apparatus |
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| JP2000241466A (en) * | 1999-02-18 | 2000-09-08 | Hitachi Ltd | Small-sized electric energy converter with split type current transformer |
| US20040183522A1 (en) * | 2003-03-19 | 2004-09-23 | Power Measurement Ltd. | Power line sensors and systems incorporating same |
| KR100721251B1 (en) * | 2005-12-02 | 2007-05-22 | 엘에스산전 주식회사 | Monitoring system of underground power line |
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| CN108508258B (en) | 2024-05-17 |
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