CN109191778A - laboratory security system - Google Patents
laboratory security system Download PDFInfo
- Publication number
- CN109191778A CN109191778A CN201811106246.1A CN201811106246A CN109191778A CN 109191778 A CN109191778 A CN 109191778A CN 201811106246 A CN201811106246 A CN 201811106246A CN 109191778 A CN109191778 A CN 109191778A
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- China
- Prior art keywords
- switch
- contactor
- warning
- power source
- laboratory
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses laboratory security systems, are related to electric power safety safeguard technical field；It includes warning switch and the first A.C. contactor KM1, the power supply of the warning switch terminates AC power source, the first A.C. contactor KM1 connects between the output end of warning switch and the zero curve of AC power source, experiment load Rs, the first normally-closed contact KM1-1 of the first A.C. contactor KM1 and AC power source series connection, the warning switch identification to the region that human body occurs in the experiment load periphery Rs is security area；It realizes the security protection in experimentation, reduces experimental cost by technologies such as electronic controls.
Description
Technical field
The present invention relates to electric power safety safeguard technical field more particularly to a kind of laboratory security systems.
Background technique
Currently, according to " JJG313-2010 current transformer for metering vertification regulation ", " voltage is used in JJG314-2010 metering
Ct calibrating regulation " regulation, it before every mutual inductor is installed at the scene, should all be examined and determine, to determine that its properties reaches
Live real work demand.When examining and determine mutual inductor, the rated value of mutual inductor need to be brought the voltage up to.That is, if to 10kV mutual inductance
Device, which is examined and determine, just to be needed experimental voltage being increased to 10kV, is examined and determine 35kV mutual inductor and just needs to increase experimental voltage
To 35kV.
As shown in figure 5, the checking process of high-voltage mutual inductor is more complicated, for guarantee the safety of high-voltage mutual inductor experiment into
Row, teams and groups need to put into a large amount of manpower scene monitoring, meanwhile, the switch designs of experimental facilities are on apparatus body, after combined floodgate
Pressurized equipment charges, and operator is also in test block, and which increases the security risks of experiment operator.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of laboratory security systems, pass through the skills such as electronic control
Art realizes the security protection in experimentation, reduces experimental cost.
In order to solve the above technical problems, the technical solution used in the present invention is: including guarding against switching to exchange with first connecing
Tentaculum KM1, the power supply of the warning switch terminate AC power source, and the first A.C. contactor KM1 connects in the defeated of warning switch
Between outlet and the zero curve of AC power source, experiment load Rs, the first normally-closed contact KM1-1 of the first A.C. contactor KM1 and friendship
Galvanic electricity is source-series, and the warning switch identification to the region that human body occurs in the experiment load periphery Rs is security area.
A further technical solution lies in: the quantity of the warning switch is four, and four warnings switch is respectively
First to fourth warning switch U1~U4, the power end of four warning switches is in parallel, and the output end of four warning switches mutually interconnects
It connects, the experiment load Rs is located in the security area that four warning switches are formed.
A further technical solution lies in: four warnings switch is in distributed rectangular.
A further technical solution lies in: its further include monitoring switch and the second A.C. contactor KM2, the security area with
Laboratory forms surveillance zone between the walls, and the monitoring switch is located in surveillance zone, and the power supply of the monitoring switch terminates exchange
Power supply, the second A.C. contactor KM2 connect between the output end of monitoring switch and the zero curve of AC power source, and the experiment is negative
Carry the first normally opened contact KM2- of Rs, the first normally-closed contact KM1-1 of the first A.C. contactor KM1, the second A.C. contactor KM2
1 and AC power source series connection.
A further technical solution lies in: the warning switch is human body infrared induction switch.
A further technical solution lies in: the monitoring switch is human body infrared induction switch.
A further technical solution lies in: the AC power source is 220V AC power source.
The beneficial effects of adopting the technical scheme are that
First, including warning switch and the first A.C. contactor KM1, the power supply of the warning switch terminates AC power source, described
First A.C. contactor KM1 connects between the output end of warning switch and the zero curve of AC power source, experiment load Rs, the first exchange
The the first normally-closed contact KM1-1 and AC power source of contactor KM1 connects, and the warning switch identification goes out to the experiment load periphery Rs
The region of existing human body is security area.The technical solution realizes the security protection in experimentation, reduces experimental cost.
Second, the quantity of the warning switch is four, and four warnings switch is that first to fourth warning is opened respectively
U1~U4 is closed, the power end of four warning switches is in parallel, and the output end of four warning switches is connected with each other, and the experiment loads Rs
In the security area that four warning switches are formed.The technical solution, human bioequivalence effect is more preferable, and the safety of whole system is more
It is high.
Third, four warnings switch is in distributed rectangular.The technical solution, layout more standardize, and human bioequivalence effect is more
Good, the safety of whole system is higher.
4th, it further include monitoring switch and the second A.C. contactor KM2, the security area and laboratory shape between the walls
At surveillance zone, the monitoring switch is located in surveillance zone, and the power supply of the monitoring switch terminates AC power source, second exchange
Contactor KM2 connects between the output end of monitoring switch and the zero curve of AC power source, and the experiment loads Rs, the first ac contactor
The first normally-closed contact KM1-1 of device KM1, the first normally opened contact KM2-1 of the second A.C. contactor KM2 and AC power source series connection.
The technical solution, monitoring switch play the role of dual fail-safe, i.e. identification experimenter authorization allows to test the expression started, whole
The safety of a system is higher.
Detailed description of the invention
Fig. 1 is the schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the distribution map of human body infrared inductive switch in the embodiment of the present invention 1；
Fig. 3 is the schematic diagram of the embodiment of the present invention 2；
Fig. 4 is the distribution map of human body infrared inductive switch in the embodiment of the present invention 2；
Fig. 5 is the checking process figure of high-voltage mutual inductor in the prior art.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
Embodiment 1:
As shown in Figure 1 and Figure 2, the invention discloses a kind of laboratory security systems comprising warning switch and the first ac contactor
Device KM1, the quantity of the warning switch are four and are in distributed rectangular, and four warnings switch is first to fourth alert respectively
Switch U1~U4 is guarded against, the 1st foot of four warnings switch is connected to the firewire L of AC power source, the 2nd foot of four warning switches
It is connected to the zero curve N of AC power source, the 3rd foot of four warning switches forms the public output of four warning switches after being connected with each other
End, the first A.C. contactor KM1 connects between the zero curve N of public output and AC power source that four warnings switch, real
It tests load Rs, the first normally-closed contact KM1-1 of the first A.C. contactor KM1 and AC power source series connection, the experiment and loads Rs
In in the security area that four warning switches are formed.
The warning switch is human body infrared induction switch, and the AC power source is 220V AC power source.
Wherein, experiment load Rs is the equivalent load being devices under, and is devices under the reality for being placed on laboratory center
Test area；Human body infrared inductive switch is the TAD-T816 for opening up Anda board, the first A.C. contactor KM1 sheet as the prior art herein
It repeats no more.
Operation instruction:
Firstly, laboratory security system identifies the characteristic infrared line signal of human body, identification region by human body infrared inductive switch
All experimentss live zone can be covered, which is security area.Ensure that device only makes movement, Bu Huiyin to human body signal
Laboratory apparatus and tested device generate maloperation situation.
Secondly, output end output voltage electric current makes the first friendship after any human body infrared inductive switch detects human body
The first normally-closed contact KM1-1 of stream contactor KM1 acts and holds off-state, i.e., laboratory security system by disconnecting automatically
The mode of test block power supply, it is ensured that risk of getting an electric shock will not occur for human body.Manually judge whether personnel have electric shock wind as compared with the past
, there are faster speed and higher reliability in danger, the artificial personnel prevented into charging zone.
Finally, laboratory security system has incorporated automatic power control in laboratory safety technical precaution, tested when by experiment
The safety supervision of personnel becomes guaranteeing within 7 X 24 hours the protection that Experimental Area is strayed into human body, even if experimental facilities is anticipated
Outside, it also can fundamentally prevent human electric shock's accident, laboratory safety protective capacities is raised to a completely new level.
The human body letter in Experimental Area can be detected before laboratory security system is mounted on experimental power supply, after installing automatically
Number, no matter when, once discovery Experimental Area in there is human body signal, disconnect experimental power supply immediately, detect Experimental Area without
People, automatic closing after 30 seconds connect experimental power supply.
Embodiment 2:
It as shown in Figure 3, Figure 4, on the basis of embodiment 1, further include monitoring switch U5 and the second A.C. contactor KM2, institute
It stating security area and laboratory forms surveillance zone between the walls, the monitoring switch U5 is located in surveillance zone,
The 1st foot of the monitoring switch U5 is connected to the firewire L of AC power source, and the 2nd foot is connected to the zero curve N of AC power source, described
Second A.C. contactor KM2 connects between the output end of monitoring the 3rd foot of switch U5 and the zero curve N of AC power source, and the experiment is negative
Carry the first normally opened contact KM2- of Rs, the first normally-closed contact KM1-1 of the first A.C. contactor KM1, the second A.C. contactor KM2
1 and AC power source series connection.
The monitoring switch U5 is human body infrared induction switch.
Operation instruction:
Experimenter connects be devices under after, walk via test block and security area to surveillance zone and stand in monitoring switch U5
In identification range, at this point, the output end output voltage electric current of monitoring switch U5 makes, the second A.C. contactor KM2's is first normally opened
Contact KM2-1 acts and holds closed state, warning region nobody, four warning switches first to fourth guard against switch U1~U4
Output end without output, the first A.C. contactor KM1 no current passes through, the first normally-closed contact of the first A.C. contactor KM1
KM1-1 attonity is simultaneously kept closed, and the AC power source introducing of test experiments is devices under, proper testing.
As someone in nobody or security area in the identification range of the monitoring switch U5 of surveillance zone, experimental power supply can be by
It disconnects, it is ensured that security protection.
Monitoring switch U5 plays the role of dual fail-safe, i.e. identification experimenter authorization allows to test the expression started.
Laboratory security system have high reliablity, actuation time is short, coverage area is accurate, has automatic reclosing function
Can, the features such as construction cost is cheap.
One, high reliablity
Laboratory security system has used the A.C. contactor of the big current-carrying capacity of 63A, can safe disjunction test electric current, while using 2
The human body infrared inductive switch arrangement of times redundancy, it is ensured that device finds that personnel are strayed into time, acts in time.
Two, actuation time is short
Laboratory security system used human body infrared induction switch actuation time less than 0.3 second, and by reasonable line arrangement, utilizes
AC relay and A.C. contactor release time, whole system actuation time was at 0.5 second significantly less than the characteristic of pickup time
Within, which improves protective capabilities.
Three, coverage area is accurate
The sensitivity of human body infrared inductive switch and induction range are adjustable, and induction range is 0~10m, by adjusting human body infrared
The sensitivity of inductive switch and induction range can accurately control induction overlay area, accomplish not refuse the personnel in the area of coverage
It is dynamic, to the area of coverage outside personnel's not malfunction.
Four, has automatic reclosing function
Because experiment operator need to open experimental bench power supply in the experimental bench in test block, laboratory security system can be ensured
Personnel operate equipment and experimental power supply are isolated when opening power supply, and after operator leaves, system automatic closing can carry out reality
It tests.
After the security system of application experiment room, the safety of personnel can reach 100% when work；Personnel are strayed into test area
Electrocution conditions are completely eliminated；When meeting the emergency of person electric shock risk, the isolated power supply time was declined by original 25 seconds
To 0.5 second, reduce 99%.
Meanwhile after the security system of application experiment room, experiment work group number can be reduced to 2 people, safe work from 4 original people
It is doubled as efficiency, 3 hours calculating is tested with the test of daily one group of high-voltage mutual inductor, every group of mutual inductor, people can be saved
102 man day of power.
Claims (7)
1. a kind of laboratory security system, it is characterised in that: including warning switch and the first A.C. contactor KM1, the warning
The power supply of switch terminates AC power source, and the first A.C. contactor KM1 connects in the output end and AC power source for guarding against switch
Between zero curve, experiment load Rs, the first normally-closed contact KM1-1 of the first A.C. contactor KM1 and AC power source series connection, the police
It guards against switch identification and the region of human body occurs to the experiment load periphery Rs for security area.
2. laboratory security system according to claim 1, it is characterised in that: the quantity of the warning switch is four,
Four warnings switch is first to fourth warning switch U1~U4 respectively, and the power end of four warning switches is in parallel, four
The output end of warning switch is connected with each other, and the experiment load Rs is located in the security area that four warning switches are formed.
3. laboratory security system according to claim 2, it is characterised in that: four warnings switch is in rectangle point
Cloth.
4. laboratory security system according to claim 1, it is characterised in that: it further includes that monitoring switch is exchanged with second
Contactor KM2, the security area and laboratory form surveillance zone between the walls, and the monitoring switch is located in surveillance zone, described
The power supply of monitoring switch terminates AC power source, and the second A.C. contactor KM2 connects the output end and alternating current in monitoring switch
Between the zero curve in source, the first normally-closed contact KM1-1, the second ac contactor of the experiment load Rs, the first A.C. contactor KM1
The the first normally opened contact KM2-1 and AC power source of device KM2 connects.
5. laboratory security system described in any one of -3 according to claim 1: the warning switch is human body infrared sense
Inductive switch.
6. laboratory security system according to claim 4, it is characterised in that: the monitoring switch is human body infrared induction
Switch.
7. laboratory security system described in any one of -4 according to claim 1: the AC power source is 220V alternating current
Source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106246.1A CN109191778A (en) | 2018-09-21 | 2018-09-21 | laboratory security system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106246.1A CN109191778A (en) | 2018-09-21 | 2018-09-21 | laboratory security system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109191778A true CN109191778A (en) | 2019-01-11 |
Family
ID=64909226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811106246.1A Pending CN109191778A (en) | 2018-09-21 | 2018-09-21 | laboratory security system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109191778A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09185777A (en) * | 1995-12-28 | 1997-07-15 | Tokyo Gas Co Ltd | Method and device for wide-area trespass monitoring |
| JPH09257946A (en) * | 1996-03-27 | 1997-10-03 | Nippon Steel Corp | Radiation detection element and radiation detector |
| CN201804402U (en) * | 2010-09-08 | 2011-04-20 | 辽宁省电力有限公司鞍山超高压分公司 | Infrared alarming device for fence |
| CN103310573A (en) * | 2013-05-24 | 2013-09-18 | 国家电网公司 | High-voltage test area alarming device |
| CN203366492U (en) * | 2013-07-15 | 2013-12-25 | 田洪 | Portable electric power test personal safety protection system |
| CN104299360A (en) * | 2014-10-30 | 2015-01-21 | 云南省送变电工程公司 | Intelligent infrared high-voltage test protection system with wireless monitoring function |
| CN204695499U (en) * | 2015-06-11 | 2015-10-07 | 江苏省电力公司常州供电公司 | A kind of high-potting district is anti-is strayed into device |
-
2018
- 2018-09-21 CN CN201811106246.1A patent/CN109191778A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09185777A (en) * | 1995-12-28 | 1997-07-15 | Tokyo Gas Co Ltd | Method and device for wide-area trespass monitoring |
| JPH09257946A (en) * | 1996-03-27 | 1997-10-03 | Nippon Steel Corp | Radiation detection element and radiation detector |
| CN201804402U (en) * | 2010-09-08 | 2011-04-20 | 辽宁省电力有限公司鞍山超高压分公司 | Infrared alarming device for fence |
| CN103310573A (en) * | 2013-05-24 | 2013-09-18 | 国家电网公司 | High-voltage test area alarming device |
| CN203366492U (en) * | 2013-07-15 | 2013-12-25 | 田洪 | Portable electric power test personal safety protection system |
| CN104299360A (en) * | 2014-10-30 | 2015-01-21 | 云南省送变电工程公司 | Intelligent infrared high-voltage test protection system with wireless monitoring function |
| CN204695499U (en) * | 2015-06-11 | 2015-10-07 | 江苏省电力公司常州供电公司 | A kind of high-potting district is anti-is strayed into device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |