CN204228886U - The fault monitoring device of charged display device - Google Patents
The fault monitoring device of charged display device Download PDFInfo
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- CN204228886U CN204228886U CN201420625056.1U CN201420625056U CN204228886U CN 204228886 U CN204228886 U CN 204228886U CN 201420625056 U CN201420625056 U CN 201420625056U CN 204228886 U CN204228886 U CN 204228886U
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- display device
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- charged display
- module
- definite value
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 11
- 230000035515 penetration Effects 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model discloses a kind of fault monitoring device of charged display device, comprise charged display device, voltage load module, voltage sample module, relatively definite value module, logic module output, described charged display device, voltage load module, voltage sample module, relatively definite value module, logic module output connects successively, logic module output comprises or gate logic unit, communications network interface and hummer, charged display device is connected by mutual inductor with voltage load module, voltage sample link is by isolating transformer, scaling circuit and voltage follower circuit composition, relatively definite value link is made up of two comparers, the utility model with distribution system charged display device place voltage for point of penetration, make use of the feature that charged display device height reliably reacts circuit electriferous state, by real-time sampling monitoring charged display device state, reach the object of Monitoring Line voltage.
Description
technical field:
The utility model relates to a kind of fault monitor, particularly relates to a kind of fault monitoring device of charged display device.
background technology:
Distribution system malfunction monitoring technology, all that distribution circuit electric voltage is sampled, obtain the signal reacting circuit voltage failure information, by communication networking, pass to background monitoring machine, different fault monitoring methods, the voltage sample point chosen is different, the ease implemented is different, but utilizes distribution system charged display device, and the pick-up unit accurately and reliably obtaining the voltage signal of reaction line fault does not relate to.
utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, there is provided a kind of structure simple, be easy to carry, with distribution system charged display device place voltage for point of penetration, make use of the feature that charged display device height reliably reacts circuit electriferous state, by real-time sampling monitoring charged display device state, reach the fault monitoring device of the charged display device of Monitoring Line voltage object.
The technical solution of the utility model is: a kind of fault monitoring device of charged display device, comprise charged display device, voltage load module, voltage sample module, compare definite value module, logic module output, described charged display device, voltage load module, voltage sample module, compare definite value module, logic module output connects successively, described logic module output comprises or gate logic unit, communications network interface and hummer.
Described charged display device is connected by mutual inductor with voltage load module.
Described voltage sample link is made up of isolating transformer, scaling circuit and voltage follower circuit, and the described definite value link that compares is made up of two comparers.
The beneficial effects of the utility model are:
1, the utility model is with distribution system charged display device place voltage for point of penetration, make use of the feature that charged display device height reliably reacts circuit electriferous state, by real-time sampling monitoring charged display device state, reaches the object of Monitoring Line voltage.
2, the utility model input voltage is the voltage at charged display device place, and this voltage height has reliably reacted the electriferous state of distribution line, and adopts this voltage to save as input link circuit high voltage being transferred to low-voltage.
3, the utility model is provided with communication network interface, can be connected, and be general-purpose interface, the operation of handled easily personnel with electric system networking.
accompanying drawing illustrates:
Fig. 1 is that the fault monitoring device of charged display device connects block diagram.
Fig. 2 is the fault monitoring device circuit diagram of charged display device.
embodiment:
Embodiment: see Fig. 1 and Fig. 2.
The fault monitoring device of charged display device, comprise charged display device, voltage load module, voltage sample module, compare definite value module, logic module output, charged display device, voltage load module, voltage sample module, compare definite value module, logic module output connects successively, logic module output comprises or gate logic unit, communications network interface and hummer.
Charged display device is connected by mutual inductor with voltage load module.
Voltage sample link is made up of isolating transformer, scaling circuit and voltage follower circuit, compares definite value link and is made up of two comparers.
During use, monitoring distribution circuit electric voltage, obtain reaction line fault conditions voltage signal, voltage signal is passed to by voltage sample link and compares definite value link, compares definite value link and voltage signal and given voltage definite value is compared, compare definite value link and the voltage signal of transmission is become logical signal simultaneously, logical signal by or door export to communication network and hummer, when distribution line is normal, fault monitor can monitor normal line voltage distribution, the normal signal of outlet line; When distribution line failure, distribution line three-phase voltage has at least one mutually abnormal, and fault monitor can monitor false voltage, outlet line fault-signal.
Voltage sample link is made up of isolating transformer, scaling circuit and voltage follower circuit, and fault monitor and charged display device are isolated by isolating transformer, avoid high voltage to seal in low-pressure side, to ensure low-pressure side safety; The suitable regulation voltage amplitude of scaling circuit, passes to rear class by front magnitude voltage signals; Voltage follower circuit improves the input impedance that voltage signal transmits loop, the signal to noise ratio (S/N ratio) of booster tension signal transmission.
Relatively definite value link is made up of two comparers, comprise the positive set-point of the voltage adjusted and negative set-point simultaneously, this link judges that whether normal line circuit voltage is crucial, and when line voltage distribution is normal: comparer sampled voltage is less than positive set-point above, it exports as low level; Comparer sampled voltage is higher than negative set-point below, and it exports as low level.When line voltage distribution raises because of fault: comparer sampled voltage is greater than positive set-point above, it exports as high level; Comparer sampled voltage is higher than negative set-point below, and it exports as low level.When line voltage distribution reduces because of fault: comparer sampled voltage is less than positive set-point above, it exports as low level; Comparer sampled voltage is less than negative set-point below, and it exports as high level.Relatively definite value link converts voltage signal to logical signal, passes to rear class.
Output element comprises or gate logic, communication network and hummer, when line voltage distribution is normal: or the input of door two ends is low level, and its output is also low level.During line voltage distribution fault: or door one end is input as low level one end and is input as high level, and its output is then high level.The logic of output element is: when line voltage distribution is normal, output low level; During line voltage distribution fault, export high level.Output signal is passed to background monitoring main frame by communication network, and output signal is also connected with hummer, line fault alarm.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. the fault monitoring device of a charged display device, comprise charged display device, voltage load module, voltage sample module, compare definite value module, logic module output, it is characterized in that: described charged display device, voltage load module, voltage sample module, compare definite value module, logic module output connects successively, described logic module output comprises or gate logic unit, communications network interface and hummer.
2. the fault monitoring device of charged display device according to claim 1, is characterized in that: described charged display device is connected by mutual inductor with voltage load module.
3. the fault monitoring device of charged display device according to claim 1, is characterized in that: described voltage sample link is made up of isolating transformer, scaling circuit and voltage follower circuit.
4. the fault monitoring device of charged display device according to claim 1, is characterized in that: the described definite value link that compares is made up of two comparers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420625056.1U CN204228886U (en) | 2014-10-27 | 2014-10-27 | The fault monitoring device of charged display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420625056.1U CN204228886U (en) | 2014-10-27 | 2014-10-27 | The fault monitoring device of charged display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204228886U true CN204228886U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420625056.1U Active CN204228886U (en) | 2014-10-27 | 2014-10-27 | The fault monitoring device of charged display device |
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| Country | Link |
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| CN (1) | CN204228886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330698A (en) * | 2014-10-27 | 2015-02-04 | 国家电网公司 | Fault monitor based on power distribution system electrified display device |
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2014
- 2014-10-27 CN CN201420625056.1U patent/CN204228886U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330698A (en) * | 2014-10-27 | 2015-02-04 | 国家电网公司 | Fault monitor based on power distribution system electrified display device |
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