CN204290074U - High-voltage electriferous display locking device - Google Patents
High-voltage electriferous display locking device Download PDFInfo
- Publication number
- CN204290074U CN204290074U CN201420848616.XU CN201420848616U CN204290074U CN 204290074 U CN204290074 U CN 204290074U CN 201420848616 U CN201420848616 U CN 201420848616U CN 204290074 U CN204290074 U CN 204290074U
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- power supply
- inductosyn
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Abstract
A kind of high-voltage electriferous display locking device, comprise sensing unit, be connected on the signal amplification unit of sensing unit output, be connected on the A/D sampling unit of signal amplification unit output, be connected on the signal transacting of A/D sampling unit output and control unit, the display unit being connected on signal transacting and control unit output and interlocking signal output unit and the Power supply unit of powering for each unit, and sensing unit adopts touch sensor or inductosyn.The input of touch sensor and inductosyn two kinds of varying number level signals can be applicable to, device is outputed node and is supplied to microcomputer type and prevents electric misoperation device, effectively prevent the misoperation to 6kV, 10kV and 35kV switch cubicle rear cabinet door, can be automatically switched power supply, and have dead electricity output block signal function.
Description
Technical field
The utility model relates to a kind of high-voltage electriferous display locking device being applied in microprocessor-based products of power system and preventing in electric misoperation system.
Background technology
Along with the raising day by day of the anti-error level of transformer station, the expanding day of anti-misoperation coverage rate, the serious accident occurred in transformer station reduces year by year.But, because current transformer station middle-high voltage switch " five prevent " block sytem exists hidden danger, switch cubicle anti mis-closedown function imperfection, cannot provide foundation for judging that whether circuit is charged in operation maintenance personnel grid switching operation and maintainer's upkeep operation process, there is certain security risk.
Utility model content
The utility model is the problems referred to above that will solve prior art existence, provides a kind of function with forced blocking, thus effectively prevents the misoperation to door of switch cabinet, ensures the high-voltage electriferous display locking device of the safety in production of electric power system.
High-voltage electriferous display locking device of the present utility model, its special character is: the signal transacting of the A/D sampling unit output that comprises sensing unit, is connected on the signal amplification unit of sensing unit output, is connected on the A/D sampling unit of signal amplification unit output, is connected on and control unit, the display unit being connected on signal transacting and control unit output and interlocking signal output unit and the Power supply unit of powering for each unit, and sensing unit adopts touch sensor or inductosyn;
The feedback circuit one of corresponding inductosyn and the feedback circuit two of corresponding touch sensor is connected in described signal amplification unit;
Described Power supply unit comprises the DC power supply branch road be made up of the AC/DC module of connecting and diode D1 and the powered battery branch road be made up of the battery of connecting and diode D2, and described DC power supply branch road and powered battery branch road are in parallel;
Described interlocking signal output unit is made up of reset chip, switching circuit and magnetic latching relay, it is output control terminal that a group of described magnetic latching relay often opens node, and the output control terminal of described signal transacting and control unit is connected with the input of switching circuit.
The beneficial effects of the utility model are:
1, the input of touch sensor and inductosyn two kinds of varying number level signals can be applicable to, both contact measurement can be carried out, induction type detection can be carried out again, make in-site installation convenient, often there is touch sensor and export and inductosyn output in same transformer station, adopts a kind of high-voltage electriferous display locking device to make easy for installation like this;
2, high voltage display device often opens node by one group of magnetic latching relay is that microcomputer type prevents from electric misoperation device from providing passive bus exporting, there is forced blocking function, therefore operating personnel are to open electrified body cabinet door having under electricity condition, ensure the safety in production of electric power system.Device adopts reset chip to carry out dead electricity control to magnetic latching relay, when this device dead electricity, when operating voltage drops to reset chip threshold value, reset chip reset output signal makes magnetic latching relay action by switching circuit, make device should be able to ensure magnetic latching relay action once under power failure state, the node of often opening of magnetic latching relay closes.
3, supply power voltage Parallel opertation is adopted, the additional devices such as relay are not needed to realize the power supply automatic switching function (220VAC and battery) of high-voltage electriferous display locking device, can realize automatically switching, if power supply 220V dead electricity, automatically switch to powered battery, during 220V Power supply, battery power consumption is 0W.Export direct current by power module to seal in diode and powered battery to seal in diode then in parallel to system power supply, generation leakage current when adopting 2 diodes to prevent from simultaneously powering.
4, touch sensor and inductosyn is utilized to detect electrified body, cabinet electrical verification operation in front of the door can be realized out, electrical verification is by cannot opening switch cabinet cabinet door, there is the function of forced blocking, effectively prevent the misoperation to 6kV, 10kV and 35kV switch cubicle rear cabinet door, ensure the safety in production of electric power system.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the schematic block circuit diagram of interlocking signal output unit;
Fig. 3 is the circuit theory diagrams of Power supply unit.
Embodiment
As shown in Figure 1, this high-voltage electriferous display locking device, comprise sensing unit, be connected on the signal amplification unit of sensing unit output, be connected on the A/D sampling unit of signal amplification unit output, be connected on the signal transacting of A/D sampling unit output and control unit, the display unit being connected on signal transacting and control unit output and interlocking signal output unit and the Power supply unit of powering for each unit, and sensing unit adopts touch sensor or inductosyn;
The output of described signal amplification unit and the feedback circuit two of the feedback circuit one and corresponding touch sensor that are connected to corresponding inductosyn between input; By selecting feedback impedance value in feedback circuit one and feedback circuit two to adjust multiplication factor, inductosyn and the dissimilar signal source of touch sensor two kinds can be accessed.
As shown in Figure 2, described interlocking signal output unit is made up of reset chip, switching circuit and magnetic latching relay, be connected to resistance R1 and triode D3 between reset chip and switching circuit, it is that output control terminal prevents electric misoperation device to be connected with microcomputer type that a group of described magnetic latching relay often opens node.The reset output terminal of described reset chip is connected with the input of switching circuit with signal transacting and the output control terminal of control unit through triode D3, the control end of co-controlling magnetic latching relay.
The node of often opening of magnetic latching relay closes as microcomputer type prevents electric misoperation device from providing forced blocking function, when by sensing unit, high-voltage electriferous display locking device detects that the charged control relay of electrified body closes, the node of often opening of magnetic latching relay closes, if operating personnel want that opening this node of electrified body cupboard door lock must be off-state, thus achieve the function of forced blocking.
As shown in Figure 3, described Power supply unit, comprise the DC power supply branch road be made up of the AC/DC module of connecting and diode D1 and the powered battery branch road be made up of the battery of connecting and diode D2, described DC power supply branch road and powered battery branch road are in parallel.Employing low-voltage is in parallel, and namely battery is in parallel with DC power supply, leakage of current when preventing from simultaneously powering by sealing in two diodes.
Claims (1)
1. high-voltage electriferous display locking device, it is characterized in that: the signal transacting of the A/D sampling unit output that comprises sensing unit, is connected on the signal amplification unit of sensing unit output, is connected on the A/D sampling unit of signal amplification unit output, is connected on and control unit, the display unit being connected on signal transacting and control unit output and interlocking signal output unit and the Power supply unit of powering for each unit, sensing unit adopts touch sensor or inductosyn;
The feedback circuit one of corresponding inductosyn and the feedback circuit two of corresponding touch sensor is connected in described signal amplification unit;
Described Power supply unit comprises the DC power supply branch road be made up of the AC/DC module of connecting and diode D1 and the powered battery branch road be made up of the battery of connecting and diode D2, and described DC power supply branch road and powered battery branch road are in parallel;
Described interlocking signal output unit is made up of reset chip, switching circuit and magnetic latching relay, it is output control terminal that a group of described magnetic latching relay often opens node, and the output control terminal of described signal transacting and control unit is connected with the input of switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848616.XU CN204290074U (en) | 2014-12-29 | 2014-12-29 | High-voltage electriferous display locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848616.XU CN204290074U (en) | 2014-12-29 | 2014-12-29 | High-voltage electriferous display locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290074U true CN204290074U (en) | 2015-04-22 |
Family
ID=52873204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420848616.XU Withdrawn - After Issue CN204290074U (en) | 2014-12-29 | 2014-12-29 | High-voltage electriferous display locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204290074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811255A (en) * | 2014-12-29 | 2016-07-27 | 辽宁拓新电力电子有限公司 | High-voltage live display locking device |
-
2014
- 2014-12-29 CN CN201420848616.XU patent/CN204290074U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811255A (en) * | 2014-12-29 | 2016-07-27 | 辽宁拓新电力电子有限公司 | High-voltage live display locking device |
| CN105811255B (en) * | 2014-12-29 | 2018-06-26 | 辽宁拓新电力电子有限公司 | High-voltage electriferous display locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150422 Effective date of abandoning: 20180626 |