CN109116160A - Remote controlled emergency set detection device - Google Patents

Remote controlled emergency set detection device Download PDF

Info

Publication number
CN109116160A
CN109116160A CN201811192797.4A CN201811192797A CN109116160A CN 109116160 A CN109116160 A CN 109116160A CN 201811192797 A CN201811192797 A CN 201811192797A CN 109116160 A CN109116160 A CN 109116160A
Authority
CN
China
Prior art keywords
unit
reserve battery
connect
emergency set
output end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811192797.4A
Other languages
Chinese (zh)
Inventor
柯建军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Bilda Technology Co Ltd
Original Assignee
Shenzhen Bilda Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Bilda Technology Co Ltd filed Critical Shenzhen Bilda Technology Co Ltd
Priority to CN201811192797.4A priority Critical patent/CN109116160A/en
Publication of CN109116160A publication Critical patent/CN109116160A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Abstract

The invention discloses a kind of remote controlled emergency set detection devices, including monitoring unit, signal element, control unit, pressure stabilizing charhing unit, reserve battery, switch unit and constant current driving unit, monitoring unit, signal element and control unit are sequentially connected, the output end and control unit of pressure stabilizing charhing unit, the input terminal of reserve battery connects, the control terminal and pressure stabilizing charhing unit of control unit, switch unit connection, switch unit and reserve battery, constant current driving unit connection, and constant current driving unit connection load, monitoring unit controls control unit by signal element and exports high level, pressure stabilizing charhing unit short circuit, switch unit conducting, into contingency mode, at this time, the load being drivingly connected by observation constant current, if loading the work that shines, then emergency set is normal;If load does not shine, emergency set breaks down, it is only necessary to by remotely controlling, so that it may realize detection, Maintenance free manually arrives scene and tested, and easy to operate.

Description

Remote controlled emergency set detection device
Technical field
The present invention relates to emergency set detection fields, more particularly to a kind of remote controlled emergency set detection device.
Background technique
In actual production and living, electrical equipment is in occupation of irreplaceable role, once have a power failure, various equipment It cannot run, it will bring big inconvenience and loss to production and living, in some important places, need to ensure level-one electricity consumption The uninterrupted power supply of load, and with the raising that people require work living environment, intelligent building obtains more and more people's Concern, by a series of intelligentized designs, makes building be provided with safe and convenient, efficient, energy saving feature.Lighting system is Indispensable part in intelligent building, in municipal power failure power-off, emergency light will be used to replace original city's electric lighting Lamp provides illumination to positions such as corridor, staircases in building, guarantees the safety of owner.Wherein, reserve battery is having a power failure When can start the battery supply usually to charge automatically, emergency lighting in 1-2 hours is provided.But it needs to infuse using reserve battery One problem of meaning is to want whether contingent survey reserve battery is in normal operating conditions, prevents to mention in real have a power failure For service, and emergency set is generally according to aloft, and maintenance personnel needs when detecting could be by by ladder or other tools To the detection switch of emergency set, while there is waste of manpower resource in this way, fault detection real-time be also substantially reduce, and And the detection of existing emergency set is usually when simulating to disconnect alternating current, whether emergency set, which works, is judged, and can not be right The actual conditions of emergency set in the process of work are monitored, and may cause what power supply when accident occurs was unable to operate normally Risk.
Summary of the invention
Shortcoming present in view of the above technology, the present invention provide a kind of remote controlled emergency set detection dress It sets, the detection to emergency function can be realized by monitoring unit.
To achieve the above object, the present invention provides a kind of remote controlled emergency set detection device, including monitoring list Member, signal element, control unit, pressure stabilizing charhing unit, reserve battery, switch unit and constant current driving unit, monitoring unit, letter Number unit and control unit are sequentially connected, the output end of pressure stabilizing charhing unit connect with the input terminal of control unit, reserve battery, The control terminal of control unit is connect with pressure stabilizing charhing unit, switch unit, and switch unit and reserve battery, constant current driving unit connect It connects, and constant current driving unit connection load, monitoring unit controls control unit by signal element and exports high level, pressure stabilizing charging Unit short circuit, switch unit conducting, into contingency mode, at this time, loaded work piece, then emergency set is normal, and load does not work, then Emergency set breaks down.
Wherein, described control unit includes microcontroller chip, the control output end of the microcontroller chip and pressure stabilizing charhing unit The connection of enabled input terminal, it is the electrical energy inputs of the electric energy output end of the pressure stabilizing charhing unit and the microcontroller chip, spare The charging port of battery connects, and monitoring unit exports high level by the control output end that signal element controls microcontroller chip, surely Charhing unit is pressed to close, into contingency mode.
Wherein, the pressure stabilizing charhing unit includes the first triode and the second triode in parallel, first triode It is grounded after the input terminal of connection reserve battery and microcontroller chip, the second triode connects the port test and the control of microwell chips is defeated Be grounded after outlet, the microcontroller chip input high level, second triode ON, so first triode with it is described The input terminal disconnection of reserve battery, microwell chips.
Wherein, described control unit further includes peripheral circuit, the output of the input terminal and reserve battery of the peripheral circuit End connection, the output end of the peripheral circuit and the input terminal of microcontroller chip connect, and protect the supply voltage of microcontroller chip.
Wherein, the enable end of the switch unit is connect with the control output end of the microcontroller chip, the switch unit Input terminal connect with the reserve battery, the input terminal of output end and constant current driving unit connects, described control unit output High level, so that the switch unit is connected, the reserve battery is powered to the constant current driving unit.
Wherein, the switch unit include the first mos pipe and the 2nd mos pipe, first metal-oxide-semiconductor respectively with it is described spare Battery, constant current driving unit connection, and connect with the second metal-oxide-semiconductor, the control of the 2nd mos pipe and the microcontroller chip exports It is grounded after the connection of end, the control output end of the microcontroller chip exports high level, the 2nd mos pipe conducting, and then described the The conducting of one mos pipe, reserve battery are constant current driving unit power supply.
Wherein, described control unit further includes PLC module, and the reserve battery is connect with PLC module, the PLC module Output end is connect with signal element, for the monitoring unit feedback current information of voltage, the input terminal of the PLC module with The constant current driving unit output end connection.
Wherein, the signal element includes wherein the one of WiFi signal R-T unit, bluetooth and fiber-optic signal R-T unit Kind.
Wherein, the signal element is at least provided with 2 signal access points.
Wherein, the monitoring unit includes the one or more of monitor supervision platform, mobile phone terminal and middle control display unit.
The beneficial effects of the present invention are: compared with prior art, remote controlled emergency set inspection provided by the invention Device is surveyed, setting control unit receives the information that monitoring unit is sent by signal element, and it is single that control unit controls pressure stabilizing charging First short circuit so that the charging port of reserve battery does not input, and controls voltage simultaneously and makes the perseverance of reserve battery and emergency unit Driving unit conducting is flowed, into emergency function, at this point, the load that observation constant current is drivingly connected is answered if loading the work that shines Anxious equipment is normal;If load does not shine, emergency set breaks down, it is only necessary to by remotely controlling, so that it may realize detection, Maintenance free manually arrives scene and is tested, and easy to operate;Control unit is provided with PLC module, and PLC module passes through signal Unit is connect with monitoring unit so that PLC module can with the Current Voltage situation of real-time detection emergency set during the work time, It feeds back monitoring unit, realizes to the detection in the emergency set course of work, it is high-efficient, and timeliness is good, convenient for the system of data Meter.
Detailed description of the invention
Fig. 1 is overall block diagram of the invention;
Fig. 2 is whole details block diagram of the invention
Fig. 3 is control unit circuit diagram of the invention;
Fig. 4 is pressure stabilizing charhing unit circuit diagram of the invention;
Fig. 5 is switch unit circuit diagram of the invention.
Main element symbol description is as follows:
1, monitoring unit 2, signal element
3, control unit 4, pressure stabilizing charhing unit
5, reserve battery 6, switch unit
7, constant current driving unit 8, load.
Specific embodiment
In order to more clearly state the present invention, the present invention is further described with reference to the accompanying drawing.
Referring to Fig. 1, it is of the invention to achieve the above object, the present invention provides a kind of remote controlled emergency set inspection Survey device, including monitoring unit 1, signal element 2, control unit 3, pressure stabilizing charhing unit 4, reserve battery 5,6 and of switch unit Constant current driving unit 7, wherein pressure stabilizing charhing unit 4 passes through power input port 9 into power-switching circuit (not shown) and city excessively Electrical connection is powered primarily to obtaining stable voltage for the charging of reserve battery 5, and for control unit, monitoring unit 1, Signal element 2 and control unit 3 are sequentially connected, the output end of pressure stabilizing charhing unit 4 and the input of control unit 3, reserve battery 5 End connects, the control terminal of control unit 3 is connect with pressure stabilizing charhing unit 4, switch unit 6, switch unit 6 and reserve battery 5, perseverance It flows driving unit 7 to connect, and the connection of constant current driving unit 7 load 8, monitoring unit 1 controls control unit 3 by signal element 2 High level, 4 short circuit of pressure stabilizing charhing unit are exported, switch unit conducting at this time, 8 work of load, is then met an urgent need into contingency mode Equipment is normal, and load 8 does not work, then emergency set breaks down, and setting control unit 4 is single by the reception monitoring of signal element 2 The information that member 1 is sent, control unit 3 controls 4 short circuit of pressure stabilizing charhing unit, so that the charging port of reserve battery 5 does not input, And reserve battery 5 and constant current driving unit 7 is connected in control unit 3 simultaneously, into emergency function, at this point, observation constant current driving The load of connection, if loading the work that shines, emergency set is normal;If load does not shine, emergency set breaks down, It only needs by remotely controlling, so that it may realize detection, Maintenance free manually arrives scene and tested, and easy to operate.
In the present embodiment, refering to Fig. 2-Fig. 4, control unit 3 includes microcontroller chip 31, and microcontroller chip 31 is single-chip microcontroller, The control output end of microcontroller chip 31 is connect with the enabled input terminal of pressure stabilizing charhing unit 4, i.e., the RLY-A leads ends in figure, surely Press the electric energy output end of charhing unit 4, i.e. 13V input terminal, the charging with the electrical energy inputs, reserve battery 5 of microcontroller chip 31 Port connection, monitoring unit 1 export high level by the control output end that signal element 2 controls microcontroller chip 3, and pressure stabilizing charging is single Member 4 is closed, and emergency function is started;Preferably, pressure stabilizing charhing unit 4 includes the first triode Q3 and the second triode in parallel It is grounded after the input terminal of Q2, the first triode Q3 connection reserve battery 5 and microcontroller chip 31, the second end triode Q3 connection test Mouthful and microcontroller chip 31 after be grounded, microcontroller chip 31 export high level, the second triode Q2 conducting, and then the first triode Q3 with The input terminal disconnection of reserve battery 5, microcontroller chip 31;In order to be protected to microcontroller chip 31, prevent input voltage excessively high and It overloads, control unit 3 further includes peripheral circuit (not shown), the input terminal and reserve battery 5 of peripheral circuit (not shown) Output end connection, the output end of peripheral circuit (not shown) connect with the input terminal of microcontroller chip 31, protection microcontroller chip 31 Supply voltage.
In the present embodiment, connect refering to Fig. 2-Fig. 5, the enable end of switch unit 6 and the control output end of microcontroller chip 31 It connects, i.e. RLY-A leads ends, the input terminal VCC of switch unit 6 is connect with reserve battery 5, output end VCC2 and constant current driving unit 7 input terminal connection, the output high level of the RLY-A leads ends of control unit 3, so that switch unit 6 is connected, reserve battery 5 It powers to constant current driving unit 7;Specifically, switch unit 6 includes the first mos pipe Q13 and the 2nd mos pipe Q15, the first metal-oxide-semiconductor Q13 is connect with reserve battery 5, constant current driving unit 7 respectively, and is connect with the second metal-oxide-semiconductor Q15, the 2nd mos pipe 15 and micro-control core It is grounded after the control output end connection of piece 31, microcontroller chip 31 exports high level, the 2nd mos pipe Q15 conducting, and then the first mos Q13 is connected in pipe, and reserve battery 5 is the power supply of constant current driving unit 7.
In the present embodiment, control unit 3 further includes PLC module 32, and reserve battery 5 is connect with PLC module 32, PLC mould 32 output end of block is connect with signal element, for 1 feedback current information of voltage of monitoring unit, the input terminal of PLC module 32 with The connection of 7 output end of constant current driving unit, for receiving the output Current Voltage of constant current driving unit 7, and it is anti-by signal element 2 It is fed to monitoring unit 1;Signal element 2 includes the one of which of WiFi signal R-T unit, bluetooth and fiber-optic signal R-T unit, Signal element is at least provided with 2 signal access points, and one is the shutoff signal access point with microcontroller chip 31, another is PLC The output signal access point of module 9, so that no setting is required two communication modes, set so that PLC module 9 can be met an urgent need with real-time detection Standby Current Voltage situation during the work time, feedback arrive monitoring unit 1, realize to the detection in the emergency set course of work, It is high-efficient, and timeliness is good, convenient for the statistics of data;Wherein monitoring unit includes that monitor supervision platform, mobile phone terminal and middle control display are single The one or more of member.
Workflow of the invention: with monitoring unit 1 be mobile phone or computer, signal element 2 are that wif signal receiving/transmission device is Example sends cut-offing instruction by computer end or mobile phone terminal, receives the cut-offing instruction to micro-control core by WiFi signal R-T unit Piece 31, at this time microcontroller chip 31 by PRY-A foot export high level, the PRY-A foot input high level of pressure stabilizing charhing unit, at this time The two poles of the earth of second triode Q2 are connected, and are microcontroller chip 31 and the battery-powered both ends electricity of standby electricity by the connection of the first triode Q3 Short out road, and inputting power supply piezoelectric voltage is 13V, the input of the not no supply voltage of 13V of reserve battery and microcontroller chip 31 at this time, And it is inputted by microcontroller chip 31 by the enabled input terminal 2 that PRY-A foot exports high level to the 2nd mos pipe Q15 of switch unit 3 poles of high level, i.e. the 2nd mos pipe export high level, so that the grid and source conduction of the first metal-oxide-semiconductor Q13, i.e., spare Battery is connected with constant current driving unit, emergency function starting, at this point, the load in observation constant current drive output, if load Shine work, then emergency function is normal, if load does not shine, emergency function failure, at the same time, PLC is received in real time The Current Voltage of constant current driving unit 7, and by WiFi signal R-T unit feedback to the computer end and mobile phone terminal, to emergency set Real-time condition feed back to computer end and mobile phone terminal, realize the collection and statistics of data.
Disclosed above is only one or several specific embodiments of the invention, but the present invention is not limited to this, is appointed What what those skilled in the art can think variation should all fall into protection scope of the present invention.

Claims (10)

1. a kind of remote controlled emergency set detection device, which is characterized in that including monitoring unit, signal element, control Unit, pressure stabilizing charhing unit, reserve battery, switch unit and constant current driving unit, monitoring unit, signal element and control unit It is sequentially connected, the output end of pressure stabilizing charhing unit connect with the input terminal of control unit, reserve battery, the control terminal of control unit It is connect with pressure stabilizing charhing unit, switch unit, switch unit is connect with reserve battery, constant current driving unit, and constant current driving is single Member connection loads, and monitoring unit controls control unit by signal element and exports high level, pressure stabilizing charhing unit short circuit, switching list Member conducting, into contingency mode, at this time, loaded work piece, then emergency set is normal, and load does not work, then event occurs for emergency set Barrier.
2. remote controlled emergency set detection device according to claim 1, which is characterized in that described control unit Including microcontroller chip, the control output end of the microcontroller chip is connect with the enabled input terminal of pressure stabilizing charhing unit, the pressure stabilizing The electric energy output end of charhing unit is connect with the charging port of the electrical energy inputs of the microcontroller chip, reserve battery, and monitoring is single Member exports high level by the control output end that signal element controls microcontroller chip, and pressure stabilizing charhing unit is closed, into emergency mould Formula.
3. the remote controlled emergency set detection device according to 2, which is characterized in that the pressure stabilizing charhing unit includes The input terminal of first triode and the second triode in parallel, the first triode connection reserve battery and microcontroller chip is followed by It is grounded behind the control output end of ground, the second triode connection port test and microwell chips, the microcontroller chip input high level, Second triode ON, and then the input terminal of first triode and the reserve battery, microwell chips disconnects.
4. remote controlled emergency set detection device according to claim 2, which is characterized in that described control unit It further include peripheral circuit, the input terminal of the peripheral circuit and the output end of reserve battery connect, the output of the peripheral circuit End is connect with the input terminal of microcontroller chip, protects the supply voltage of microcontroller chip.
5. remote controlled emergency set detection device according to claim 2, which is characterized in that the switch unit Enable end connect with the control output end of the microcontroller chip, the input terminal of the switch unit and the reserve battery connect It connects, the input terminal connection of output end and constant current driving unit, described control unit exports high level, so that the switch unit is led Logical, the reserve battery is powered to the constant current driving unit.
6. remote controlled emergency set detection device according to claim 5, which is characterized in that the switch unit Including the first mos pipe and the 2nd mos pipe, first metal-oxide-semiconductor is connect with the reserve battery, constant current driving unit respectively, and It is connect with the second metal-oxide-semiconductor, the 2nd mos pipe is grounded after connecting with the control output end of the microcontroller chip, the micro-control core The control output end of piece exports high level, the 2nd mos pipe conducting, and then the first mos pipe is connected, and reserve battery is institute State constant current driving unit power supply.
7. remote controlled emergency set detection device according to claim 1, which is characterized in that described control unit It further include PLC module, the reserve battery is connect with PLC module, and the PLC module output end is connect with signal element, is used for To the monitoring unit feedback current information of voltage, the input terminal of the PLC module and the constant current driving unit output end connect It connects.
8. remote controlled emergency set detection device according to claim 1, which is characterized in that the signal element One of which including WiFi signal R-T unit, bluetooth and fiber-optic signal R-T unit.
9. remote controlled emergency set detection device according to claim 8, which is characterized in that the signal element At least provided with 2 signal access points.
10. remote controlled emergency set detection device according to claim 1, which is characterized in that the monitoring is single Member includes the one or more of monitor supervision platform, mobile phone terminal and middle control display unit.
CN201811192797.4A 2018-10-13 2018-10-13 Remote controlled emergency set detection device Pending CN109116160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811192797.4A CN109116160A (en) 2018-10-13 2018-10-13 Remote controlled emergency set detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811192797.4A CN109116160A (en) 2018-10-13 2018-10-13 Remote controlled emergency set detection device

Publications (1)

Publication Number Publication Date
CN109116160A true CN109116160A (en) 2019-01-01

Family

ID=64854109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811192797.4A Pending CN109116160A (en) 2018-10-13 2018-10-13 Remote controlled emergency set detection device

Country Status (1)

Country Link
CN (1) CN109116160A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2899378Y (en) * 2006-05-19 2007-05-09 无锡博创微电子有限公司 Emergent illuminator by intelligent-controlled chip
CN101932153A (en) * 2009-06-24 2010-12-29 海洋王照明科技股份有限公司 LED emergency light circuit supplied by wide voltage power supply
CN203368132U (en) * 2013-07-12 2013-12-25 Tcl通力电子(惠州)有限公司 Power switching circuit and dual-power supply device
CN104219858A (en) * 2014-08-29 2014-12-17 天津市鸿远电气股份有限公司 System and method for remote monitoring of emergency lights
CN104684156A (en) * 2013-11-28 2015-06-03 深圳市海洋王照明工程有限公司 Emergency illumination lamp control circuit and lamp
CN105676759A (en) * 2016-01-13 2016-06-15 千江(上海)信息科技有限公司 Power management system and method for online monitoring device of power distribution line
CN205566773U (en) * 2016-05-03 2016-09-07 国网江西省电力公司南昌供电分公司 Emergent self -checking lighting device of fire control
CN106028567A (en) * 2016-07-15 2016-10-12 珠海市声驰电器有限公司 Emergency lighting circuit and emergency lighting lamp
CN106443504A (en) * 2016-08-11 2017-02-22 江苏银佳电子设备有限公司 Emergency lamp system fault detecting method based on wireless sensor network
CN206742952U (en) * 2017-04-18 2017-12-12 深圳市熠辉照明科技有限公司 LED emergency power supplies are met an urgent need switching circuit
CN209148785U (en) * 2018-10-13 2019-07-23 深圳市比尔达科技有限公司 Remote controlled emergency set detection device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2899378Y (en) * 2006-05-19 2007-05-09 无锡博创微电子有限公司 Emergent illuminator by intelligent-controlled chip
CN101932153A (en) * 2009-06-24 2010-12-29 海洋王照明科技股份有限公司 LED emergency light circuit supplied by wide voltage power supply
CN203368132U (en) * 2013-07-12 2013-12-25 Tcl通力电子(惠州)有限公司 Power switching circuit and dual-power supply device
CN104684156A (en) * 2013-11-28 2015-06-03 深圳市海洋王照明工程有限公司 Emergency illumination lamp control circuit and lamp
CN104219858A (en) * 2014-08-29 2014-12-17 天津市鸿远电气股份有限公司 System and method for remote monitoring of emergency lights
CN105676759A (en) * 2016-01-13 2016-06-15 千江(上海)信息科技有限公司 Power management system and method for online monitoring device of power distribution line
CN205566773U (en) * 2016-05-03 2016-09-07 国网江西省电力公司南昌供电分公司 Emergent self -checking lighting device of fire control
CN106028567A (en) * 2016-07-15 2016-10-12 珠海市声驰电器有限公司 Emergency lighting circuit and emergency lighting lamp
CN106443504A (en) * 2016-08-11 2017-02-22 江苏银佳电子设备有限公司 Emergency lamp system fault detecting method based on wireless sensor network
CN206742952U (en) * 2017-04-18 2017-12-12 深圳市熠辉照明科技有限公司 LED emergency power supplies are met an urgent need switching circuit
CN209148785U (en) * 2018-10-13 2019-07-23 深圳市比尔达科技有限公司 Remote controlled emergency set detection device

Similar Documents

Publication Publication Date Title
CN201119053Y (en) Intelligent control device for solar luminescent street lamp
CN110672962A (en) State monitoring system for electric equipment
CN106476650A (en) Portable charging energy-storing system and its control method
CN209148785U (en) Remote controlled emergency set detection device
CN101997335A (en) Power supply control system and control method
CN109167430B (en) A kind of distributed DC power
US20190148976A1 (en) Power supply apparatus and electricity storage device
CN106443293A (en) Direct current ground fault online detection and alarm device
CN210109280U (en) Remote capacity checking system for storage battery of electric direct-current power supply
CN103762713A (en) Outdoor centralized power supply system with charging function
CN207257398U (en) Intelligent charging spot with repair and maintenance device
CN105490359A (en) Power supply management apparatus for electric vehicle
CN204376531U (en) The remote and intelligent maintenance system of transforming plant DC power supply
CN101964510A (en) Radioactive source monitoring system
CN210838996U (en) Power supply device of power distribution network terminal and power distribution network terminal
CN205861827U (en) A kind of overhead transmission line tracer
CN211075601U (en) Intelligent charging equipment for electric vehicle
CN109116160A (en) Remote controlled emergency set detection device
CN214314641U (en) Voltage monitoring system of AGV charger
CN206416866U (en) Portable charging energy-storing system
CN2932508Y (en) Card-swiping-type intelligent charging station of electric vehicle
CN113300474A (en) DC distribution power consumption early warning control system
CN206703985U (en) The access device shared for charging pile
CN110620425A (en) Power supply circuit and device for secondary equipment of power distribution room
CN206628046U (en) Intelligent cable alarm

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination