CN205944777U - Intelligent power distribution cabinet - Google Patents
Intelligent power distribution cabinet Download PDFInfo
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- CN205944777U CN205944777U CN201620895433.2U CN201620895433U CN205944777U CN 205944777 U CN205944777 U CN 205944777U CN 201620895433 U CN201620895433 U CN 201620895433U CN 205944777 U CN205944777 U CN 205944777U
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Abstract
The utility model discloses an intelligent power distribution cabinet, whether solved the cabinet door can't have personnel and the defect of intelligent control cabinet door state according to the response, its technical scheme main points are that intelligent power distribution cabinet includes the cabinet body, the cabinet door, still including being used for the detecting box door whether to open and export cabinet door turn -on signal's cabinet door detection device, a personnel detection device for detecting whether there are personnel and export personnel's signal, the controlling means who receives cabinet door turn -on signal and personnel's signal and export control signal reaches the final controlling element in response to controlling means, when personnel detection device did not detect personnel and cabinet door detection device and detects the cabinet door and be in the open mode, controlling means control execution device started in order closing the cabinet door, the utility model discloses an intelligent power distribution cabinet through detection device and controlling means and final controlling element's mutual intercommunication, has realized can solving the problem that cabinet men wei closed to the measuring and the control of switch board state, realizes the intelligent switching -off control of cabinet door.
Description
Technical field
The utility model is related to power equipment, particularly to a kind of intelligent power distribution cabinet.
Background technology
Power distribution cabinet is essential in daily to be basic power equipment, and early stage power distribution cabinet is required to personnel's hand switch, warp
Chang Rongyi forgets to close and causes a hidden trouble, currently in order to avoiding this phenomenon, carrying out transformation achieves power distribution cabinet automatic switch, but at present
Automated Design mostly be mechanical mode in addition it is also necessary to people carries out door-closing operation manually.
Utility application CN201520968719.4 discloses a kind of power distribution cabinet, although described intelligent power distribution cabinet
Realize automatically locking a door, but or the operation between microswitch, need staff to go to touch microswitch to operate closing cabinet door,
Personnel still may forget closing cabinet door, and power distribution cabinet intelligently automatic detection can not realize cabinet door in the case of no personnel
It is automatically switched off, however it remains very big hidden danger, the space that could be improved.
Utility model content
The purpose of this utility model is to provide a kind of intelligent power distribution cabinet, can be after cabinet door is opened in the case of no personnel
Automatically the on off state carrying out cabinet door detects and realizes being automatically switched off the operation of cabinet door.
Above-mentioned technical purpose of the present utility model technical scheme is that：
A kind of intelligent power distribution cabinet, including cabinet, cabinet door, also includes opening for detecting whether cabinet door is opened and exported cabinet door
The cabinet door detection means of signal is for detecting whether having personnel and exporting personnel's detection means of personnel's signal, be respectively coupled to
Cabinet door detection means and personnel's detection means are filled with the control receiving cabinet door open signal and personnel's signal output control signal
Put and be coupled to control device the performs device in response to control device；When personnel's detection means is not detected by personnel and cabinet door
When detection means detects cabinet door and is in open mode, described control device controls performs device to start to close cabinet door.
Using such scheme, when staff opens cabinet door, detection switch turns on, and cabinet door detection means detects cabinet door
Open signal input control device, when there being personnel, personnel's detection means detects the signal input control device of personnel, control
Cabinet door is opened the signal input do not closed to performs device, performs device execution fixing cabinet door opening behaviour by device conducting processed
Make the safety it is ensured that during human users, it is to avoid cabinet door closes the danger causing it is ensured that human users' is smooth when there being personnel
And safety；When cabinet door is opened and during no personnel, personnel's detection means output no personnel's signal arrives control device, control device control
Performs device open and close operation ensures that cabinet door is automatically switched off, and prevents personnel from forgetting to close loss and the danger that cabinet door causes, operation
More convenient and safety.
Preferably, described personnel's detection means is Infrared Detectors, described Infrared Detectors is arranged at cabinet inner top
Side near cabinet door.
Using such scheme, Infrared Detectors can detect to human body, ensure that the reliability of detection signal and steady
Fixed, signal will not be led to misinformate because there being barrier, Infrared Detectors is arranged on cabinet inner top near the one of cabinet door simultaneously
Side, detecting the accuracy it is ensured that detecting from top to bottom, being difficult to be touched positioned at top, it is to avoid unnecessary damage, extend
Service life；To the signal detecting can accurate incoming control device, realize timely feedback and the control of control device.
Preferably, described cabinet door detection means is included for providing the detection switch of cabinet door open signal and being used for for inspection
The groove that slowdown monitoring switch is placed, described detection switch and groove are arranged at place bonded to each other after cabinet and cabinet door closure.
Using such scheme, cabinet door detection means includes detection switch and the groove for placing, detection for detection switch
Switch can hide be placed in groove can be without protruding more attractive in appearance and safety, detection switch and groove be arranged at cabinet and cabinet
Place bonded to each other after door closure, can more snugly realize the opening and closing switching, detect the open and-shut mode of cabinet door more in real time.
Preferably, it is characterized in that：Described cabinet door detection means also includes being coupled to the power circuit of detection switch, described
Power circuit includes bridge rectifier and storing up electricity electric capacity, and described storing up electricity electric capacity is coupled in rectification circuit two ends, when detection is opened
When closing closure, described storing up electricity electric capacity is charged.
Using such scheme, it is capable of to alternating current to galvanic conversion by bridge rectifier, using distribution
The alternating current that cabinet uses, power source facilitates controllable, is capable of the running of control device, Bu Huiyin after being converted into direct current
Need to need replacing power supply using direct current for control device, coupling capacitance, can be when each closing cabinet door
Carry out storing up electricity electric capacity charging, close for cabinet door next time and prepare it is ensured that also can once realize cabinet door in the event of a power failure
It is automatically switched off.
Preferably, described detection switch include connecting in groove walls and with power circuit conductive contact paster,
In groove sliding with conflict conductive contact paster or depart from the conducting block of conductive contact paster, the diapire of groove and conducting block it
Between be connected with tension spring, be located in cabinet door and be arranged in groove to drive the insulation cut-off block of conducting block sliding.
Using such scheme, the conductive contact paster on the conducting block and groove walls of detection switch can be conflicted and be connected or de-
From realizing connection and the disconnection of cabinet door detection means circuit, insulation cut-off block can be located in the cunning driving conducting block in groove
Move, states of cabinet door determines the relation between conducting block and conductive contact paster, the pulling force of clamping is set between conducting block and cabinet
Spring can be made conducting block depart from conductive contact paster when insulation cut-off block is arranged in groove by compression, in insulation cut-off
Conductive block reset can be allowed to conflict with conductive contact paster during block abjection groove, realize feeding back the inspection of cabinet door open and-shut mode in real time
Survey.
Preferably, described cabinet door detection means also includes the instruction being coupled to detection switch and being controlled by detection switch
Lamp, the side that described indicator lamp is arranged on Infrared Detectors is connected with cabinet.
Using such scheme, detection switch has been also coupled to indicator lamp, when cabinet door opens detection switch closure, indicator lamp
Bright, play indicative function, indicator lamp is arranged on Infrared Detectors side and is connected with cabinet, being arranged on cabinet inner top can be more obvious
Identified and will not be touched easily and be damaged.
Preferably, described control device includes logic gates and on-off circuit, described logic gates is coupled to cabinet
Door detection means is with personnel's detection means to receive cabinet door open signal and personnel's signal output logic gate signal, described switch
Circuit is coupled to logic gates to receive logic gate signal and to output control signals to performs device.
Using such scheme, when cabinet door opens no human users, the logic gates output cabinet door of control device is opened
No personnel's signal, on-off circuit conducting provides closing cabinet door signal to performs device, and be capable of intelligence passes through electricity by detection signal
Road judges to be transferred to performs device, and the execute instruction realizing performs device controls.
Preferably, described performs device include with the mounting blocks of cabinet door integrally connected, be located on mounting blocks and be used for carrying
For the electromagnetic assembly of magnetic force, conductive buttons being connected with cabinet and be located at back-moving spring between conductive buttons top and cabinet,
The groove placing and providing conductive buttons insertion for electromagnetic assembly is provided with described mounting blocks, described electromagnetic assembly drives conductive
Button sliding is to be arranged in groove.
Using such scheme, the mounting blocks with cabinet door integrally connected of performs device setting and the conduction being connected with cabinet are pressed
Button can cooperate and fix the open position of door it is ensured that the opening of door is stable, the electromagnetic assembly in mounting blocks simultaneously
The closing of cabinet door can be realized when performs device obtains and closes cabinet door instruction it is ensured that being automatically switched off of cabinet door, back-moving spring energy
Enough realize clamping and the reset of conductive buttons, realize the multi-pass operation of cabinet door use.
Preferably, described electromagnetic assembly includes time-delay relay coil and iron core, open when control device receives cabinet door
When opening and have personnel's signal, time-delay relay coil electricity works.
Using such scheme, the time-delay relay coil of electromagnetic assembly can be after performs device obtains and closes cabinet door instruction
Carry out delay operation, time delay turns off cabinet door afterwards for a period of time it is ensured that the safety of personnel, and the iron core of electromagnetic assembly can be in coil
Produce magnetic force after energising and absorption affinity is applied to conductive buttons, so that conductive buttons is inserted in groove to fix door unlatching.
In sum, the utility model has the advantages that：
1. pass through cabinet door and personnel's detection means, control device and performs device, it is possible to achieve automatic to cabinet door switch
Control, without personnel control, the safety decreasing complex operation degree and effectively prevent cabinet door forgetting closing and cause is hidden
Suffer from；
2. the conductive buttons of the detection switch of setting and execution independently contact each other, it is possible to achieve cabinet door switch
Based Intelligent Control, ensure that cabinet door have in the on state personnel and no personnel when be able to carry out states of cabinet door state keep and cabinet
The instruction action that door is closed is it is ensured that the in stable condition and security of cabinet door.
Brief description
Fig. 1 is the structural representation of intelligent power distribution cabinet；
Fig. 2 is the circuit theory diagrams of embodiment one；
Fig. 3 is the front view of intelligent power distribution cabinet；
Fig. 4 is the sectional view in the A-A portion along along Fig. 3；
Fig. 5 is the sectional view in the B-B portion along along Fig. 3；
The circuit theory diagrams of Fig. 6 position embodiment two.
In figure：1st, cabinet；2nd, cabinet door；3rd, detection switch；31st, insulation cut-off block；32nd, conducting block；33rd, conductive contact patch
Piece；41st, mounting blocks；42nd, time-delay relay coil；43rd, conductive buttons；44th, back-moving spring；5th, cabinet door detection means；6th, personnel
Detection means；7th, control device；8th, performs device.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment one：As depicted in figs. 1 and 2, a kind of intelligent power distribution cabinet, including cabinet 1, cabinet door 2, also includes personnel's detection
Device 6, cabinet door 2 detection means, control device 7 and performs device 8；Cabinet door 2 detection means opens and closes in order to detect cabinet door 2
State, in order to have detected whether personnel, both will detect the incoming control device of signal 7, control device 7 to personnel's detection means 6
Control the execution action of performs device 8, judge that making output closes cabinet door 2 or open maintenance according to the detection signal inputting
Signal, performs device 8 receipt signal, to respond execution associative operation, carries out the closing of cabinet door 2 and opens holding operation.
As shown in Fig. 2 cabinet door 2 detection means is coupled to the DC supply input end of power circuit, power circuit adopts bridge-type
Alternating current is converted to DC supply input by rectification circuit, and detection switch 3K1 of cabinet door 2 detection means is coupled to DC supply input end
Positive pole, indicator lamp is coupled to detection switch 3, and storing up electricity electric capacity C1 coupled in parallel is in the indicator lamp other end and power cathode, electric capacity
C1 positive pole is coupled to indicator lamp；Adjustable resistance R1 one end is coupled to the node of storing up electricity electric capacity C1 and indicator lamp, and one end input controls
Device 7；Personnel's detection means 6 also input control device 7, personnel's detection means 6 is pyroelectric infrared detector, personnel is detected
When have signal output, can't detect during personnel no signal output.
The logic gates of control device 7 is coupled to cabinet door 2 detection means and personnel's detection means 6, on-off circuit first
Level is triode Q1, and triode Q1 base stage is coupled to the output end with door, and the emitter stage of triode Q1 is coupled to triode Q2's
Base stage, the colelctor electrode of triode Q1 is coupled to the positive pole of storing up electricity electric capacity C1, and triode Q2 emitter stage is coupled to storing up electricity electric capacity C1 and bears
Pole, colelctor electrode is coupled to performs device 8.
The time-delay relay J of performs device 8 is coupled to the triode Q2 colelctor electrode of control device 7, and time-delay relay J is another
End is coupled to triode Q1 and the node of storing up electricity electric capacity C1, and time-delay relay coupled in parallel has diode D1, diode D1 negative pole
It is coupled to the triode Q2 colelctor electrode of control device 7 and the node of time-delay relay J, time-delay relay J controls the switch of execution
K2, switch K2 are coupled with resistance R2, and resistance R2 and switch K2 other end end power up.
It is illustrated in figure 3 the front view of intelligent power distribution cabinet of the present utility model, A-A portion is detection switch 3 sectional view position
It is located, B-B portion is time-delay relay J and switch K2 sectional view position is located.
It is illustrated in figure 4 detection switch 3 sectional view, detection switch 3 is arranged in cabinet 1 near top side as shown in the figure
And the position coordinating with it in cabinet door 2, detection switch 3 includes the conductive contact paster connecting in groove walls with power circuit
33rd, in the groove sliding with the conductive contact paster 33 or depart from the conducting block 32 of conductive contact paster 33, one end in groove of conflicting
It is buckled in the tension spring that on cabinet 1, the other end is buckled on conducting block 32, is located in cabinet door 2 and be arranged in groove to drive
The insulation cut-off block 31 of conducting block 32 sliding, when cabinet door 2 is opened, insulation cut-off block 31 departs from groove, in tension spring effect
Lower conducting block 32 sliding conflict conductive contact paster 33, the detection switch 3 of cabinet door 2 detection means closes, and indicator lamp is bright, cabinet door 2
Open signal spreads out of, and after cabinet door 2 is closed, insulation cut-off block 31 is located in groove, drives conducting block 32 and conductive contact patch
Piece 33 departs from, and tension spring is compressed, and detection switch 3 disconnects, and indicator lamp goes out.
It is illustrated in figure 5 the sectional view of switch K2, switch K2 includes mounting blocks 41, electromagnetic assembly and conductive buttons 43 and answers
Position spring 44, when detection signal inputs and opens and have personnel for cabinet door 2, control device 7 controls performs device 8 execution cabinet door 2
Open and maintain instruction, the time-delay relay coil 42 of electromagnetic assembly is energized, iron core produces magnetic-adsorption conductive buttons 43, and door is opened
Afterwards, conductive buttons 43 are adsorbed in the groove of insertion mounting blocks 41, and back-moving spring 44 is stretched, and cabinet door 2 is fixed on unlatching shape
State, after personnel leave, power-off after electromagnetic assembly time delay for a period of time, the no longer cored magnetic-adsorption of conductive buttons 43,
Under the pulling force effect of back-moving spring 44, the rapid groove ejecting mounting blocks 41, is departed from cabinet door 2 and returns to mounting blocks 41 not
The state of contact, switch K2 disconnects, and cabinet door 2 is set to automatic sliding door, can start cabinet door 2 and close after no applying power is fixing
Action, slow closure.
When cabinet door 2 is of completely closed, detection switch 3 insulation cut-off block 31 is located in the groove of detection switch 3, conducting block
32 disengaging conductive contact pasters 33, detection switch 3 disconnects, and indicator lamp goes out, and realizes the closing of cabinet door 2.
The course of work：
1. cabinet door 2 is opened, and cabinet door 2 detection means separates the groove on block 31 disengaging cabinet 1 in the insulation in cabinet door 2, leads
Electric block 32 conflict conductive contact paster 33, detection switch 3 closes；
2., when there being personnel, personnel's detection means 6 detects personnel's generation high level and inputs a signal into control device 7,
There is no during personnel to export low level；
3. the logic gates of control device 7 is simultaneously received the high level signal of cabinet door 2 unlatching and the height of personnel's detection
During level, output high level signal arrives triode Q1, Q2 of on-off circuit, and triode is respectively turned on, and continuation transmission signal is to holding
Luggage puts 8, when gate receives personnel for low level signal, exports low level, on-off circuit is disconnected, and no signal is incoming
Performs device 8；
4. when executing the high level that signal receives control signal, the time-delay relay line in circuit turn-on electromagnetic assembly
Circle 42 energising make iron core produce magnetic force to conductive buttons 43 produce an absorption affinity, conductive buttons 43 from cabinet door 2 mounting blocks 41
In the groove that discontiguous position is adsorbed be inserted in mounting blocks 41, back-moving spring 44 is stretched, and mounting blocks 41 are by conductive buttons
43 is fixing, and cabinet door 2 is fixed on opening；After personnel leave, the incoming performs device of control device 7 low level signal 8, electricity
Magnetic assembly time delay power-off for a period of time, iron core no longer possesses magnetic force, and conductive buttons 43 are being stretched after being no longer influenced by absorption affinity
It is pulled under the reset pulling force of back-moving spring 44, the groove departing from mounting blocks 41 returns to most original and the discontiguous position of mounting blocks 41
Put, cabinet door 2 is set to automatically-controlled door, after mounting blocks 41 depart from the fixation of conductive buttons 43, cabinet door 2 is no longer influenced by the external force applying
After start slowly closing, when of completely closed, detection switch 3 is disconnected.
After by detection, control and performs device 8, realize whether detection cabinet door 2 opens and the personnel that whether have or not are derived from
Dynamic state of a control keeps or execution is automatically switched off it is not necessary to artificial goes closing cabinet door 2, and power distribution cabinet just can be opened according to cabinet door 2
Personnel whether are had and automatic intelligent operation when opening.
Embodiment two：It is with the difference of embodiment one, as shown in fig. 6, in detection on the basis of embodiment one
Switch 3 and indicator lamp two side position are circumscribed with control device of wireless 7, and control device of wireless 7 can be realized short using wireless blue tooth
The Based Intelligent Control of distance and operation, can also be received and transmission signal using SCM program simultaneously, examine in order to remote
Survey and control the state of cabinet door 2, realize remote intelligent.
Couple warning lamp LED2 at switch K2 simultaneously, cabinet door 2 state can have been shown in real time, opened when cabinet door 2 maintains
When opening state, switch K2 closure, warning lamp LED2 Chang Liang, when cabinet door 2 begins to shut off, switch K2 disconnects, and warning lamp LED2 goes out,
Personnel's cabinet door 2 can be reminded to have begun to close, it is to avoid personnel are accidentally injured.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
Field technique personnel can make to the present embodiment after reading this specification as needed does not have the modification of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (9)
1. a kind of intelligent power distribution cabinet, including cabinet (1), cabinet door (2), is characterized in that：Also include for detecting whether cabinet door (2) is opened
Open and export cabinet door (2) detection means of cabinet door (2) open signal for detecting whether having personnel and exporting the people of personnel's signal
Member detection means (6), be respectively coupled to cabinet door (2) detection means and personnel's detection means (6) to receive cabinet door (2) open signal
With personnel's signal and the control device (7) of output control signal and be coupled to control device (7) and in response to control device (7)
Performs device (8)；When personnel's detection means (6) is not detected by personnel and cabinet door (2) detection means detects cabinet door (2) and is in and beats
During open state, described control device (7) controls performs device (8) to start to close cabinet door (2).
2. intelligent power distribution cabinet according to claim 1, is characterized in that：Described personnel's detection means (6) is Infrared Detectors,
Described Infrared Detectors is arranged at the side near cabinet door (2) for cabinet (1) inner top.
3. intelligent power distribution cabinet according to claim 2, is characterized in that：Described cabinet door (2) detection means is included for providing
The detection switch (3) of cabinet door (2) open signal and for the groove placed for detection switch (3), described detection switch (3) with recessed
Groove is arranged at place bonded to each other after cabinet (1) and cabinet door (2) closure.
4. intelligent power distribution cabinet according to claim 3, is characterized in that：Described cabinet door (2) detection means also includes being coupled to
The power circuit of detection switch (3), described power circuit includes bridge rectifier and storing up electricity electric capacity, described storing up electricity electric capacity coupling
It is connected on rectification circuit two ends, when detection switch (3) closes, described storing up electricity electric capacity is charged.
5. intelligent power distribution cabinet according to claim 3, is characterized in that：Described detection switch (3) is included in groove walls
And connect with power circuit conductive contact paster (33), in groove sliding led with the conductive contact paster (33) or depart from of conflicting
It is connected with tension spring between the conducting block (32) of electrical contact paster (33), the diapire of groove and conducting block (32), be located at cabinet door
(2) go up and be arranged in groove to drive insulation cut-off block (31) of conducting block (32) sliding.
6. intelligent power distribution cabinet according to claim 3, is characterized in that：Described cabinet door (2) detection means also includes and couples
In detection switch (3) and be controlled by the indicator lamp of detection switch (3), described indicator lamp is arranged on side and the cabinet of Infrared Detectors
Body (1) connects.
7. intelligent power distribution cabinet according to claim 1, is characterized in that：Described control device (7) include logic gates and
On-off circuit, described logic gates is coupled to cabinet door (2) detection means and is opened with receiving cabinet door (2) with personnel's detection means (6)
Open signal and personnel's signal output logic gate signal, described on-off circuit is coupled to logic gates to receive logic gate signal
And output control signals to performs device (8).
8. intelligent power distribution cabinet according to claim 1, is characterized in that：Described performs device (8) is included with cabinet door (2) integrally
The mounting blocks (41) that connect, to be located at mounting blocks (41) upper and for providing the electromagnetic assembly of magnetic force, the conduction being connected with cabinet (1)
Button (43) and the back-moving spring (44) being located between conductive buttons (43) top and cabinet (1), described mounting blocks (41) set
It is equipped with and places and provide the groove that conductive buttons (43) insert for electromagnetic assembly, described electromagnetic assembly drives conductive buttons (43) sliding
Move to be arranged in groove.
9. intelligent power distribution cabinet according to claim 8, is characterized in that：Described electromagnetic assembly includes time-delay relay coil
(42) and iron core, when control device (7) receives cabinet door (2) and opens and have personnel's signal, time-delay relay coil (42) leads to
Electricity work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620895433.2U CN205944777U (en) | 2016-08-17 | 2016-08-17 | Intelligent power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620895433.2U CN205944777U (en) | 2016-08-17 | 2016-08-17 | Intelligent power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205944777U true CN205944777U (en) | 2017-02-08 |
Family
ID=57919265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620895433.2U Active CN205944777U (en) | 2016-08-17 | 2016-08-17 | Intelligent power distribution cabinet |
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| Country | Link |
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| CN (1) | CN205944777U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493634A (en) * | 2017-09-21 | 2017-12-19 | 浙江灵奇光电科技有限公司 | A kind of Internet of Things man-machine interaction and the light source carrier and exchange method of energy self-test |
| CN112616226A (en) * | 2020-12-31 | 2021-04-06 | 合安科技技术有限公司 | Illumination centralized controller, illumination control method and street lamp |
| CN113078569A (en) * | 2021-05-19 | 2021-07-06 | 安徽龙和电力集团有限公司 | Moisture-proof mechanism of alternating current metal closed ring network switch equipment |
-
2016
- 2016-08-17 CN CN201620895433.2U patent/CN205944777U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107493634A (en) * | 2017-09-21 | 2017-12-19 | 浙江灵奇光电科技有限公司 | A kind of Internet of Things man-machine interaction and the light source carrier and exchange method of energy self-test |
| CN112616226A (en) * | 2020-12-31 | 2021-04-06 | 合安科技技术有限公司 | Illumination centralized controller, illumination control method and street lamp |
| CN113078569A (en) * | 2021-05-19 | 2021-07-06 | 安徽龙和电力集团有限公司 | Moisture-proof mechanism of alternating current metal closed ring network switch equipment |
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