CN201107352Y - High voltage electrified display safety and defend apparatus - Google Patents
High voltage electrified display safety and defend apparatus Download PDFInfo
- Publication number
- CN201107352Y CN201107352Y CNU2007201260069U CN200720126006U CN201107352Y CN 201107352 Y CN201107352 Y CN 201107352Y CN U2007201260069 U CNU2007201260069 U CN U2007201260069U CN 200720126006 U CN200720126006 U CN 200720126006U CN 201107352 Y CN201107352 Y CN 201107352Y
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Abstract
The utility model relates to a high voltage electrification display burglar alarm system, which can prevent an operation worker and a maintainer from entering by mistake into an electrification interval and has three phase sequence measuring ability. An electric fence alarm device arranged additionally at the system comprises a first part composed of an electrification status signal sensor, a comparator, a first amplifying circuit and a first relay controlled by the first amplifying circuit; and a second part composed of a microwave detector, a second amplifying circuit, and a second relay controlled by the second amplifying circuit, wherein, the contacts of the first and the second relays are connected in series and then used as a power supply switch of an alarm. A three phase sequence detecting circuit arranged additionally at the system comprises a three phase voltage signal sensor, a three phase detecting circuit, a full wave rectifying circuit, a first comparison output circuit, a switch circuit, and a display circuit which are connected in sequence, wherein, an A phase signal used as a first clock signal, a B phase signal used as a second clock signal, and a C phase signal used as a sum zero clearing signal are connected to the three phase detecting circuit.
Description
Technical field
The utility model relates to a kind of electrification in high voltage and shows safety device, has especially increased fence warning function and three-phase phase-sequence measuring ability newly.
Background technology
At present, preventing that aspect the electric misoperation, most popular is high-voltage electriferous display locking device.It has the charged demonstration of circuit and mandatory two major functions of incorrect manipulation deadlock that prevent.High voltage display device mainly is made up of: acquisition sensor, comparer, microprocessor, display circuit, relay control exclusive circuit several sections.The principle of work of high-voltage electriferous display locking device is: utilize the High Voltage electric field that produced around the high-tension line and the field coupled principle between the sensing, carry out the measurement of noncontact mode at safe distance outward.Sensor is sent to comparer with the signal of responding to and compares, output signal control display circuit after microprocessor processes and relay control exclusive circuit.A, B, C three-phase pilot lamp show electricity indication (red light) and output forced blocking signal when detected transmission line is charged; When detected transmission line was not charged, A, B, C three-phase pilot lamp show did not have electricity indication (green light), while unlocking signal, and operation, maintainer can carry out operation of equipment.The major function of this traditional high-voltage electriferous display locking device prevents electric misoperation exactly, but can not effectively prevent to move, the generation of situation at interval of maintainer's mistake forward (FWD) electricity, enough guarantees are not played in this personal safety to operation, maintainer.Phase sequence for the three-phase transmission line road also lacks the relevant detection function simultaneously, do not introduce A, the B of high-voltage electriferous display locking device correspondence, the situation of C three-phase input end if occurred the three-phase signal that sensor sensing goes out in operation, though high-voltage electriferous display locking device can show and work normally, but the operating personnel is exerted an influence to a series of activities such as the daily observation of the corresponding phase of transmission line, data recording, fault judgement, and cause very big potential safety hazard.
Summary of the invention:
Problem to be solved in the utility model provides and a kind ofly prevents to move, maintainer's mistake forward (FWD) electricity at interval and the electrification in high voltage with three-phase phase-sequence measuring ability show safety device.
The technical scheme that addresses the above problem is: the electrification in high voltage that is provided shows that safety device comprises relay control exclusive circuit and warning device, improvements of the present utility model are: have additional fence warning device and three-phase phase-sequence testing circuit, said fence warning device comprises two parts, and first is made up of first relay of the three-phase line electriferous state signal transducer, comparer, first transistor amplifier and the control thereof that connect successively; Second portion is made up of second relay of the microwave detector, second transistor amplifier and the control thereof that connect successively, and wherein the contact of the contact of first relay and second relay series connection back is as the power switch of alarm; Said three-phase phase-sequence testing circuit comprises: the three-phase voltage signal sensor that joins successively, three-phase phase testing circuit, full-wave rectifying circuit, first be output circuit, on-off circuit and display circuit relatively, and wherein the A phase signals from the three-phase voltage signal sensor inserts three-phase phase testing circuit as second clock signal, C phase signals as the integration reset signal as first clock signal, B phase signals.
Above-mentioned comparer preferably adopts the logical OR not circuit, guarantees that single channel, two-way or three tunnel all have output when charged.
For the situation of concrete identification correspondence position phase sequence mistake, the second comparison output circuit that can between on-off circuit and display circuit, connect an oscillatory circuit more successively and compare with three-phase electriferous state signal.If certain two-phase connection error can be in the position display mistake indication of this wrong two-phase.
Above-mentioned second compares output circuit preferably adopts the logical difference OR-NOT circuit.
Fence warning device principle of work of the present utility model is: comparer has output when three-phase line any has electricity mutually, and first transistor amplifier is connected first relay; Enter in the setting range back microwave detector as the mobile object signal signal that detects is imported second transistor amplifier, second relay power, thus make alarm power alarm (voice or siren).If circuit is in electroless state, the hazardous location that then install, the maintainer can free in and out original setting.
The principle of work of three-phase phase-sequence testing circuit of the present utility model is: sensor to three-phase sinusoidal signal behind three-phase phase testing circuit, full-wave rectifying circuit, be converted to d. c. voltage signal, when only the phase sequence of the signal that comes in sensor transmissions and three-phase line is consistent, signal through relatively output just can trigger the on-off circuit conducting of back, and display shows that phase sequence is normal.
Compared with prior art, the utility model can right judgement have at the transmission electrical network whether the someone enters the hazardous location under the electric situation, and the personnel that enter are carried out alarm, has effectively avoided the generation of accident.Whether the three-phase signal access that just begins to detect installations, commissioning staff when simultaneously slave unit connects is correct, avoided inconvenience and the problem brought to subsequent production etc.We can say that the utility model has played the effect of " high-voltage fence security protection bodyguard ".
Description of drawings
Fig. 1 is the fence warning device circuit diagram of an embodiment of the utility model.
Fig. 2 is the three-phase phase-sequence testing circuit block diagram of an embodiment of the utility model.
Fig. 3 is the three-phase phase-sequence testing circuit figure of an embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples content of the present utility model is illustrated.
As shown in Figure 1: (detected mutually charged, then its status signal is a noble potential from the status signal on the three-phase transmission line road of sensor 1; Not charged, its status signal is an electronegative potential) feed logical OR not circuit comparer 2 respectively and compare output, this comparer can guarantee that detected circuit has signal output when single-phase, two-phase or three-phase are charged, output signal through first transistor amplifier 3 after, be used for first relay 4 is controlled, with the normally opened contact closure of first relay 4, thereby output+24V voltage is to the normally opened contact of second relay 5.When in microwave detector 6 detects the zone of setting, mobile personnel being arranged, microwave detector 6 can be exported the voltage of one+11V, this output voltage amplifies back control second relay 5 through second transistor amplifier 7, makes its normally opened contact closure, alarm 8 energising work.When detected circuit is not charged or the charged nobody of circuit enter in the microwave sounding zone, alarm can not worked.All the other are numbered among the figure: 31,71---diode, and 32,72---base resistance.
Shown in Fig. 2,3: three-phase voltage signal sensor 11 will feed three ports of the three-phase phase testing circuit of being made up of integrated circuit component U3A and U3B 12 from the sine voltage signal that A, B, C three-phase line induce respectively, wherein the A phase signals inserts the CLK port of element U3A as first clock signal, the B phase signals inserts the CLK port of element U3B as the second clock signal, the C phase signals is as the R port of integration reset signal access element U3B, at the D of element U3A port input normal voltage+5V.Three-phase sinusoidal signal through three-phase phase testing circuit 12 backs from the Q port output wave peak values of element U3B square-wave signal (the sinusoidal signal phase sequence difference or the number of phases that are input to three ports are all not inconsistent to the square-wave signal of its generation) for+5V.Square-wave signal is converted to d. c. voltage signal (the dc voltage value difference that different square-wave signal rectifications goes out) behind the small-signal full-wave rectifying circuit 13 of back.The d. c. voltage signal of full-wave rectifying circuit output enters first and compares output circuit 14, compare with the normal voltage 0.5V of circuit setting: the sinusoidal signal of coming as sensor transmissions or the number of phases different with the three-phase line phase sequence is not inconsistent, the square-wave waveform difference of three-phase phase testing circuit output then, dc voltage value difference through rectification circuit output, therefore relatively the signal of output can 15 conductings of trigger triode on-off circuit, the output of time-base oscillation circuit 16 no signals; Consistent with the phase sequence of three-phase line as the signal that sensor transmissions is come, the signal through relatively exporting can trigger transistor switching circuit 15 conductings of back, and time-base oscillation circuit 16 is that frequency is 2 hertz a square wave voltage signal with conversion of signals.The square-wave signal of oscillatory circuit output and the electriferous state signal 19 of three-phase line enter the corresponding second comparison output circuit 17 (three road logical difference OR-NOT circuit) jointly and compare output, driving LED display circuit 18.Relatively show and be output as:
1, when detected phase is not charged (three-phase electriferous state signal 19 is low level signal), the output of oscillatory circuit no signal, corresponding different OR-NOT circuit is relatively exported high potential signal, corresponding phase light emitting diode Chang Liang.
2, when detected a certain phase or certain two-phase are charged (three-phase electriferous state signal 19 has high level signal), the output of oscillatory circuit no signal, the biconditional gate circuit is relatively exported electronegative potential, and the light emitting diode of corresponding phase often goes out.
3, electriferous state signal (three-phase electriferous state signal 19 is high level signal) is all arranged and when consistent when three-phase with detected three-phase line phase sequence, oscillatory circuit output square-wave signal, it is 2 hertz high potential signal that itself and line state signal are output as frequency after relatively through the biconditional gate circuit, and it is luminous to drive the three-phase LED flash.
Among Fig. 3 all the other are numbered: 30～42---resistance, and 51～54---electric capacity.
Claims (4)
1, a kind of electrification in high voltage shows safety device, comprise relay control exclusive circuit and warning device, it is characterized in that having additional fence warning device and three-phase phase-sequence testing circuit, said fence warning device comprises two parts, and first is made up of first relay (4) of the three-phase line electriferous state signal transducer (1) that connects successively, comparer (2), first transistor amplifier (3) and control thereof; Second portion is made up of second relay (5) of the microwave detector (6) that connects successively, second transistor amplifier (7) and control thereof, and wherein the contact of the contact of first relay (4) and second relay (5) series connection back is as the power switch of alarm; Said three-phase phase-sequence testing circuit comprises: the three-phase voltage signal sensor (11) that joins successively, three-phase phase testing circuit (12), full-wave rectifying circuit (13), first be output circuit (14), on-off circuit (15) and display circuit (18) relatively, and wherein the A phase signals from the three-phase voltage signal sensor inserts three-phase phase testing circuit as second clock signal, C phase signals as the integration reset signal as first clock signal, B phase signals.
2, electrification in high voltage according to claim 1 shows safety device, it is characterized in that the second comparison output circuit (17) that connects an oscillatory circuit (16) more successively and compare with three-phase electriferous state signal between on-off circuit (15) and display circuit (18).
3, electrification in high voltage according to claim 2 shows safety device, it is characterized in that the second comparison output circuit (17) is the logical difference OR-NOT circuit.
4, show safety device according to claim 1,2 or 3 described electrification in high voltage, it is characterized in that said comparer (2) is the logical OR not circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201260069U CN201107352Y (en) | 2007-11-26 | 2007-11-26 | High voltage electrified display safety and defend apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201260069U CN201107352Y (en) | 2007-11-26 | 2007-11-26 | High voltage electrified display safety and defend apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201107352Y true CN201107352Y (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201260069U Expired - Fee Related CN201107352Y (en) | 2007-11-26 | 2007-11-26 | High voltage electrified display safety and defend apparatus |
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| CN (1) | CN201107352Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853553A (en) * | 2010-06-13 | 2010-10-06 | 微邦信息技术(上海)有限公司 | Light-efficiency electronic fence state indicating device |
| WO2011124181A2 (en) * | 2011-05-13 | 2011-10-13 | 华为技术有限公司 | Relay control method, relay control device and train operation control system |
| CN103399196A (en) * | 2013-07-24 | 2013-11-20 | 珠海黑石电气自动化科技有限公司 | Novel high-voltage electricity display |
| CN103792428A (en) * | 2013-12-10 | 2014-05-14 | 国家电网公司 | Three-phase cable phase measurement apparatus and use method thereof |
| CN105702179A (en) * | 2014-11-28 | 2016-06-22 | 国网河南省电力公司南阳供电公司 | Outdoor display device for transformer substation |
| CN107741521A (en) * | 2017-11-30 | 2018-02-27 | 福州大学 | Three-phase system non-contact type high voltage is powered to judge instruction device and its method |
| CN113804951A (en) * | 2021-09-13 | 2021-12-17 | 广东电网有限责任公司 | Live display device of circuit and live identification method of circuit |
-
2007
- 2007-11-26 CN CNU2007201260069U patent/CN201107352Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853553A (en) * | 2010-06-13 | 2010-10-06 | 微邦信息技术(上海)有限公司 | Light-efficiency electronic fence state indicating device |
| WO2011124181A2 (en) * | 2011-05-13 | 2011-10-13 | 华为技术有限公司 | Relay control method, relay control device and train operation control system |
| WO2011124181A3 (en) * | 2011-05-13 | 2012-04-12 | 华为技术有限公司 | Relay control method, relay control device and train operation control system |
| CN102858614A (en) * | 2011-05-13 | 2013-01-02 | 华为技术有限公司 | Relay control method, relay control device and train operation control system |
| CN102858614B (en) * | 2011-05-13 | 2014-12-10 | 华为技术有限公司 | Relay control method, relay control device and train operation control system |
| CN103399196A (en) * | 2013-07-24 | 2013-11-20 | 珠海黑石电气自动化科技有限公司 | Novel high-voltage electricity display |
| CN103792428A (en) * | 2013-12-10 | 2014-05-14 | 国家电网公司 | Three-phase cable phase measurement apparatus and use method thereof |
| CN103792428B (en) * | 2013-12-10 | 2015-03-25 | 国家电网公司 | Three-phase cable phase measurement apparatus and use method thereof |
| CN105702179A (en) * | 2014-11-28 | 2016-06-22 | 国网河南省电力公司南阳供电公司 | Outdoor display device for transformer substation |
| CN107741521A (en) * | 2017-11-30 | 2018-02-27 | 福州大学 | Three-phase system non-contact type high voltage is powered to judge instruction device and its method |
| CN107741521B (en) * | 2017-11-30 | 2023-06-09 | 福州大学 | Three-phase system non-contact high-voltage electrification judging and indicating device and method thereof |
| CN113804951A (en) * | 2021-09-13 | 2021-12-17 | 广东电网有限责任公司 | Live display device of circuit and live identification method of circuit |
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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 |
Granted publication date: 20080827 Termination date: 20151126 |