CN105120573B - A kind of streetlight control circuit and control method - Google Patents
A kind of streetlight control circuit and control method Download PDFInfo
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- CN105120573B CN105120573B CN201510591669.7A CN201510591669A CN105120573B CN 105120573 B CN105120573 B CN 105120573B CN 201510591669 A CN201510591669 A CN 201510591669A CN 105120573 B CN105120573 B CN 105120573B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a kind of streetlight control circuit and control methods; it uses two groups of electric current relays; the starting current and running current of street lamp are sampled respectively; pass through the combination with the time relay, intermediate relay again; starting process is avoided in realization; the function of short circuit and overload protection is carried out to distribution loop, solves the problems, such as circuit breaker trip and increase investment in street lamp starting process in traditional design.
Description
Technical field
The invention belongs to electic protection and control technology fields, are related to a kind of streetlight control circuit and control method.
Background technology
In road lighting, the high-power gas chargings class light source such as high-pressure sodium lamp and metal halide lamp, since it has
It the advantages that luminous efficiency height and long lifespan, is widely used.But special electrical spy of this kind of light source in starting process
Property, there are problems in practical applications.The starting current of gas-discharge lamp is about 2 times of normal operating current or so, and
Duration is about 10 minutes.Electrical this characteristic, easily causes two kinds of problems.The first, with Normal practice, by normal operation
1.25 times of selection breakers of electric current, buckle releaser can not avoid the starting current of street lamp, cause circuit breaker trip.Another kind is pressed
Avoid street lamp starting current, i.e. 2 times of running currents select breaker, can meet start request, it is necessary to increase distribution cable
Sectional area, to meet protection cooperation, cause investment increase.
The content of the invention
The object of the present invention is to provide a kind of designing scheme, circuit breaker trip in street lamp starting process is solved in traditional design
And the problem of increasing investment.
A kind of streetlight control circuit, major loop are pressed including low-voltage circuit breaker, A.C. contactor, current transformer, first
Button, the second button, secondary signal lamp, the first signal lamp, fuse, the first intermediate relay, the second intermediate relay, the time after
Electric appliance, three overload protection electric current relays, three short-circuit protection electric current relays and equivalent loads of road lamp are described low
Voltage breaker, A.C. contactor, the first siding ring of current transformer and equivalent loads of road lamp be sequentially connected in series firewire and zero curve,
Between ground wire；Firewire is by connecting first node after fuse, zero curve connection section point, first node and section point it
Between four branches in parallel following：
Branch one：First node is by connecting the 3rd node after the second button；3rd node passes through the second intermediate relay
Normally-closed contact after connect the 5th node；It is parallel between the 5th node and the 7th node：The normally opened contact of A.C. contactor,
First button；It is parallel between the 7th node and section point：The electromagnetic coil of A.C. contactor, secondary signal lamp, series connection
The first intermediate relay normally-closed contact and the time relay electromagnetic coil, connect time relay timing closing it is normal
Open the electromagnetic coil of contact and the first intermediate relay, series connection time relay timing closing normally opened contact both ends also simultaneously
It is associated with the normally opened contact of the first intermediate relay；
Branch two：The normally-closed contact of the A.C. contactor of concatenation and the first signal lamp；
Branch three：It is in parallel between first node and the 13rd node that there are three the normally opened of overload protection electric current relay
Contact；13rd node is followed by section point by the electromagnetic coil of the second intermediate relay；
Branch four：It is in parallel between first node and the 15th node that there are three the normally opened tactile of short-circuit protection electric current relay
Point；Section point is connected after the shunt release that 15th node passes through low-voltage circuit breaker；
The secondary side circuit of current transformer includes：The second siding ring of three current transformers, three overload protections
With the electromagnetic coil of electric current relay, three normally-closed contacts of the first intermediate relay, three short-circuit protection electric current relays
Electromagnetic coil, wiring relation be following three branch circuit parallel connections after two-terminal-grounding form closed circuit：
Branch one：The electromagnetism of the second siding ring of current transformer, the first overload protection electric current relay in parallel
The electromagnetic coil of the normally-closed contact of coil and the first intermediate relay, the first short-circuit protection electric current relay；
Branch two：The electromagnetism of the second siding ring of current transformer, the second overload protection electric current relay in parallel
The electromagnetic coil of the normally-closed contact of coil and the first intermediate relay, the second short-circuit protection electric current relay；
Branch three：The electromagnetism of the second siding ring of current transformer, the 3rd overload protection electric current relay in parallel
The electromagnetic coil of the normally-closed contact of coil and the first intermediate relay, the 3rd short-circuit protection electric current relay.
Wherein：First signal lamp is greensignal light, and secondary signal lamp is red eye.
Wherein：First button is wink ejector half starting button, and the second button is maintenance stop button.
Wherein：The time relay be the timing closing time relay, setting range 0-1000S.
A kind of method for controlling street lamps, it specifically includes following steps based on above-mentioned streetlight control circuit：
1., closed low breaker so that major loop Low Voltage Circuit Breaker is charged；
2., press the first button so that fuse, the second button, the normally-closed contact of the second intermediate relay, the first button
It is charged；
3., the electromagnetic coil of A.C. contactor it is charged, and then the normally opened contact of A.C. contactor is closed, and then control circuit
Major loop it is charged, into the pattern of starting, the secondary side circuit of current transformer has starting current by this point, following two kinds
Situation will occur simultaneously：
(1) three overload protection electric current relay will not act；Three short-circuit protection electric current relays will not move
Make；
(2) electromagnetic coil of the time relay is charged；
4., through certain delay, the delay normally opened contact of the time relay is closed, and then the electromagnetism of the first intermediate relay
Coil is charged, and starting process terminates, and then the normally opened contact of the first intermediate relay is closed, the normally closed of the first intermediate relay is touched
Point is opened；In the secondary side circuit of current transformer, electric current normal stream passes through three overload protection electric current relays, this
When, three overload protection electric current relays and three short-circuit protections enter normal operating status with electric current relay,
Overload protection can be carried out to control circuit and short-circuit protection, major loop enter normal operating phase.
Preferably, after major loop enters normal operating phase, appearance is worked as：
During overload fault, three overload protections disconnect current supply circuit with electric current relay by A.C. contactor；
During short trouble, the instantaneous disjunction of shunt release that three short-circuit protection electric current relays pass through low-voltage circuit breaker
Breaker.
Preferably, the action current of three overload protection electric current relays is equivalent loads of road lamp operating current
1.25 again.
Preferably, three short-circuit protections are set in the action current of electric current relay more than starting current, less than end
The short-circuit current value of equivalent loads of road lamp installation place.
Preferably, certain delay adjustments are equal to the starting time.
Preferably, certain delay is 10 minutes.
Beneficial effects of the present invention
The present invention uses two groups of electric current relays (three overload protection electric current relays, three short-circuit protection electricity consumptions
Current relay), the starting current and running current of street lamp are sampled respectively, then by with the time relay, intermediate relay
Starting process is avoided in the combination of device, realization, and the function of short circuit and overload protection is carried out to distribution loop.
Description of the drawings
Fig. 1 is the circuit diagram of streetlight control circuit of the present invention.
In figure：QF-low-voltage circuit breaker, KM-A.C. contactor, TA-current transformer, YO-shunt release,
The buttons of SB1-first, the buttons of SB2-second, the signal lamps of GL-first, RL-secondary signal lamp, FU-fuse, KA1-the
One intermediate relay, the intermediate relays of KA2-second, the-first overload protection electric current relay of the KT-time relay, KC1
Device, the overload protection electric current relays of KC2-second, the overload protection electric current relays of KC3-the 3rd, KC4-the first
Short-circuit protection electric current relay, the short-circuit protection electric current relays of KC5-second, the short-circuit protection electric currents of KC6-the 3rd after
Electric appliance.
Specific embodiment
With reference to embodiment, the invention will be further described, but protection scope of the present invention is without being limited thereto：
Embodiment 1, a kind of streetlight control circuit, it is mutual that major loop includes low-voltage circuit breaker QF, A.C. contactor KM, electric current
Sensor TA, the first button SB1, the second button SB2, secondary signal lamp RL, the first signal lamp GL, fuse FU, among first after
Electric appliance KA1, the second intermediate relay KA2, time relay KT, three overload protections with electric current relay (KC1, KC2,
KC3), three short-circuit protections electric current relay (KC4, KC5, KC6) and equivalent loads of road lamp is handed over the low-voltage circuit breaker QF,
Stream contactor KM, the first siding ring of current transformer TA and equivalent loads of road lamp are sequentially connected in series in firewire (L1, L2, L3) and zero
Between line N, ground wire PE；Firewire L1 is by connecting first node 1, zero curve N connections section point 2, in first segment after fuse FU
Following four branches in parallel between point 1 and section point 2：
Branch one：First node 1 is by connecting the 3rd node 3 after the second button SB2；3rd node 3 is by among second
The 5th node 5 is connected after the normally-closed contact of relay KA2；It is parallel between the 5th node 5 and the 7th node 7：Ac contactor
The normally opened contact of device KM, the first button SB1；It is parallel between the 7th node 7 and section point 2：The electricity of A.C. contactor KM
Magnetic coil, secondary signal lamp RL, the normally-closed contact of the first intermediate relay KA1 of series connection and the electromagnetic wire of time relay KT
Circle, the normally opened contact of time relay KT timing closings of series connection and the electromagnetic coil of the first intermediate relay KA1, in series connection
The normally opened contact both ends of time relay KT timing closings are also parallel with the normally opened contact of the first intermediate relay KA1；
Branch two：The normally-closed contact of the A.C. contactor KM of concatenation and the first signal lamp GL；
Branch three：It is in parallel between first node 1 and the 13rd node 13 that there are three overload protection electric current relays
The normally opened contact of (KC1, KC2, KC3)；13rd node 13 is followed by the second section by the electromagnetic coil of the second intermediate relay KA2
Point 2；
Branch four：Between first node 1 and the 15th node 15 it is in parallel there are three short-circuit protection with electric current relay (KC4,
KC5, KC6) normally opened contact；Section point 2 is connected after the shunt release YO that 15th node 15 passes through low-voltage circuit breaker QF；
The secondary side circuit of current transformer TA includes：Three current transformer TA second siding ring (TAu, TAv,
TAw), the electromagnetic coil of three overload protection electric current relay (KC1, KC2, KC3), the three of the first intermediate relay KA1
The electromagnetic coil of a normally-closed contact, three short-circuit protection electric current relay (KC4, KC5, KC6), wiring relation are following three
Two-terminal-grounding forms closed circuit after branch circuit parallel connection：
Branch one：The second siding ring TAu of current transformer TA, the first overload protection electric current relay in parallel
The electromagnetism of the normally-closed contact of the electromagnetic coil of KC1 and the first intermediate relay KA1, the first short-circuit protection electric current relay KC4
Coil；
Branch two：The second siding ring TAv of current transformer TA, the second overload protection electric current relay in parallel
The electromagnetism of the normally-closed contact of the electromagnetic coil of KC2 and the first intermediate relay KA1, the second short-circuit protection electric current relay KC5
Coil；
Branch three：The second siding ring TAw of current transformer TA, the 3rd overload protection electric current relay in parallel
The electromagnetism of the normally-closed contact of the electromagnetic coil of KC3 and the first intermediate relay KA1, the 3rd short-circuit protection electric current relay KC6
Coil.
Embodiment 2, a kind of streetlight control circuit as described in Example 1, the first signal lamp GL are greensignal light, second
Signal lamp RL is red eye.
Embodiment 3, a kind of streetlight control circuit as described in Example 1, the first button SB1 are wink ejector half starting button,
Second button SB2 is maintenance stop button.
Embodiment 4, a kind of streetlight control circuit as described in Example 1, time relay KT for the timing closing time after
Electric appliance, setting range 0-1000S.
Embodiment 5, a kind of method for controlling street lamps, its streetlight control circuit described in based on embodiment 1 specifically include following
Step：
1., closed low breaker (QF) so that major loop Low Voltage Circuit Breaker (QF) is charged；
2., press the first button (SB1) so that fuse (FU), the second button (SB2), the second intermediate relay (KA2)
Normally-closed contact, the first button (SB1) it is charged；
3., the electromagnetic coil of A.C. contactor (KM) it is charged, and then A.C. contactor (KM) normally opened contact be closed, and then
The major loop of control circuit is charged, and into the pattern of starting, the secondary side circuit of current transformer (TA) has starting current to pass through this
When, following two kinds of situations will occur simultaneously：
(1) since the normally-closed contact of the first intermediate relay (KA1) of Current Transformer Secondary lateral circuit remains closed, therefore
There will not be starting current by therefore in the electromagnetic coil of three overload protection electric current relays (KC1, KC2, KC3)
They will not be acted；Three short-circuit protection electric current relays (KC4, KC5, KC6) although electromagnetic coil in flow through starting electricity
Stream, but since starting current is less than set action current value, they will not be acted；
(2) electromagnetic coil of time relay KT is charged；
4., through certain delay, the delay normally opened contact of time relay KT is closed, and then the first intermediate relay KA1
Electromagnetic coil it is charged, starting process terminates, then the first intermediate relay KA1 normally opened contact be closed, the first intermediate relay
The normally-closed contact of device KA1 is opened；In the secondary side circuit of current transformer TA, electric current normal stream is used by three overload protections
Electric current relay (KC1, KC2, KC3), at this point, three overload protections are short with electric current relay (KC1, KC2, KC3) and three
Road protection into normal operating status, can carry out overload with electric current relay (KC4, KC5, KC6) to control circuit
Protection and short-circuit protection, major loop enter normal operating phase.
Embodiment 6, a kind of method for controlling street lamps as described in Example 5, after major loop enters normal operating phase, when going out
It is existing：
During overload fault, three overload protections pass through A.C. contactor KM with electric current relay (KC1, KC2, KC3)
Disconnect current supply circuit；
During short trouble, three short-circuit protections pass through low-voltage circuit breaker (QF) with electric current relay (KC4, KC5, KC6)
Shunt release (YO) instantaneous breaking circuit breaker.
Embodiment 7, a kind of method for controlling street lamps as described in Example 5, three overload protection electric current relays
The action current of (KC1, KC2, KC3) is 1.25 times of equivalent loads of road lamp operating current.
Embodiment 8, a kind of method for controlling street lamps as described in Example 5, three short-circuit protections with electric current relay (KC4,
KC5, KC6) action current be set in more than starting current, less than the short-circuit current value of the equivalent loads of road lamp installation place in end.
Embodiment 9, a kind of method for controlling street lamps as described in Example 5, certain delay adjustments are equal to the starting time.
Embodiment 10, a kind of method for controlling street lamps as described in Example 5, certain delay are 10 minutes.
Specific embodiment described herein is only that spirit of the present invention is illustrated.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Claims (8)
1. a kind of streetlight control circuit, it is characterised in that its major loop includes low-voltage circuit breaker (QF), A.C. contactor (KM), electricity
Current transformer (TA), the first button (SB1), the second button (SB2), secondary signal lamp (RL), the first signal lamp (GL), fuse
(FU), the first intermediate relay (KA1), the second intermediate relay (KA2), the time relay (KT), three overload protections are used
Electric current relay (KC1, KC2, KC3), three short-circuit protections electric current relay (KC4, KC5, KC6) and equivalent loads of road lamp,
The low-voltage circuit breaker (QF), A.C. contactor (KM), the first siding ring of current transformer (TA) and equivalent loads of road lamp according to
It is secondary to be serially connected between firewire (L1, L2, L3) and zero curve (N), ground wire (PE)；Firewire (L1) connects first afterwards by fuse (FU)
Node (1), zero curve (N) connection section point (2), following four branch in parallel between first node (1) and section point (2)
Road：
Branch one：First node (1) connects the 3rd node (3) afterwards by the second button (SB2)；3rd node (3) passes through second
The 5th node (5) is connected after the normally-closed contact of intermediate relay (KA2)；It is in parallel between the 5th node (5) and the 7th node (7)
Have：Normally opened contact, the first button (SB1) of A.C. contactor (KM)；It is in parallel between the 7th node (7) and section point (2)
Have：The electromagnetic coil of A.C. contactor (KM), secondary signal lamp (RL), the normally closed of the first intermediate relay (KA1) of series connection are touched
Point among the electromagnetic coil of the time relay (KT), the normally opened contact and first of the time relay (KT) timing closing connected
The electromagnetic coil of relay (KA1) is also parallel at the normally opened contact both ends of the time relay (KT) timing closing of series connection
The normally opened contact of one intermediate relay (KA1)；
Branch two：The normally-closed contact of the A.C. contactor (KM) of concatenation and the first signal lamp (GL)；
Branch three：It is in parallel between first node (1) and the 13rd node (13) that there are three overload protection electric current relays
The normally opened contact of (KC1, KC2, KC3)；13rd node (13) is followed by by the electromagnetic coil of the second intermediate relay (KA2)
Two nodes (2)；
Branch four：Between first node (1) and the 15th node (15) it is in parallel there are three short-circuit protection with electric current relay (KC4,
KC5, KC6) normally opened contact；15th node (15) connects second afterwards by the shunt release (YO) of low-voltage circuit breaker (QF)
Node (2)；
The secondary side circuit of current transformer (TA) includes：Three current transformers (TA) second siding ring (TAu, TAv,
TAw), the electromagnetic coil of three overload protection electric current relay (KC1, KC2, KC3), the first intermediate relay (KA1)
The electromagnetic coil of three normally-closed contacts, three short-circuit protection electric current relay (KC4, KC5, KC6), wiring relation are following three
Two-terminal-grounding forms closed circuit after branch circuit parallel connection：
Branch one：The first second siding ring (TAu) of current transformer (TA), the first overload protection electric current relay in parallel
The electromagnetic coil of device (KC1) and the normally-closed contact of the first intermediate relay (KA1), the first short-circuit protection electric current relay
(KC4) electromagnetic coil；
Branch two：The second second siding ring (TAv) of current transformer (TA), the second overload protection electric current relay in parallel
The electromagnetic coil of device (KC2) and the normally-closed contact of the first intermediate relay (KA1), the second short-circuit protection electric current relay
(KC5) electromagnetic coil；
Branch three：3rd second siding ring (TAw) of current transformer (TA), the 3rd overload protection electric current relay in parallel
The electromagnetic coil of device (KC3) and normally-closed contact, the 3rd short-circuit protection electric current relay of the first intermediate relay (KA1)
(KC6) electromagnetic coil；
First button (SB1) is wink ejector half starting button, and the second button (SB2) is maintenance stop button；
The time relay (KT) be the timing closing time relay, setting range 0-1000S.
2. a kind of streetlight control circuit according to claim 1, it is characterised in that the first signal lamp (GL) is green
Lamp, secondary signal lamp (RL) are red eye.
3. a kind of method for controlling street lamps, it is characterised in that it be based on streetlight control circuit described in claim 1, specifically include with
Lower step：
1., closed low breaker (QF) so that major loop Low Voltage Circuit Breaker (QF) is charged；
2., press the first button (SB1) so that fuse (FU), the second button (SB2), the second intermediate relay (KA2) it is normal
Closed contact, the first button (SB1) are charged；
3., the electromagnetic coil of A.C. contactor (KM) it is charged, and then A.C. contactor (KM) normally opened contact be closed, and then control
The major loop of circuit is charged, into the pattern of starting, the secondary side circuit of current transformer (TA) have starting current by, at this point,
Following two kinds of situations will occur simultaneously：
(1) three overload protection electric current relay (KC1, KC2, KC3) will not act；Three short-circuit protection electric current relays
Device (KC4, KC5, KC6) will not act；
(2) electromagnetic coil of the time relay (KT) is charged；
4., through certain delay, the delay normally opened contact of the time relay (KT) is closed, and then the first intermediate relay (KA1)
Electromagnetic coil it is charged, starting process terminates, then the normally opened contact of the first intermediate relay (KA1) be closed, among first after
The normally-closed contact of electric appliance (KA1) is opened；In the secondary side circuit of current transformer (TA), electric current normal stream passes through three overloads
Protection with electric current relay (KC1, KC2, KC3), at this point, three overload protections with electric current relay (KC1, KC2, KC3) and
Three short-circuit protections into normal operating status, can carry out control circuit with electric current relay (KC4, KC5, KC6)
Overload protection and short-circuit protection, major loop enter normal operating phase.
4. a kind of method for controlling street lamps according to claim 3, it is characterised in that after major loop enters normal operating phase,
Work as appearance：
During overload fault, three overload protections are disconnected by A.C. contactor (KM) with electric current relay (KC1, KC2, KC3)
Open current supply circuit；
During short trouble, shunt opening that three short-circuit protections pass through low-voltage circuit breaker (QF) with electric current relay (KC4, KC5, KC6)
Buckle releaser (YO) instantaneous breaking circuit breaker.
A kind of 5. method for controlling street lamps according to claim 3, it is characterised in that three overload protection electric current relays
The action current of device (KC1, KC2, KC3) is 1.25 times of equivalent loads of road lamp operating current.
A kind of 6. method for controlling street lamps according to claim 3, it is characterised in that three short-circuit protection electric current relays
The action current of (KC4, KC5, KC6) is set greater than starting current, the short circuit electricity less than the equivalent loads of road lamp installation place in end
Flow valuve.
7. a kind of method for controlling street lamps according to claim 3, it is characterised in that when certain delay adjustments are equal to starting
Between.
8. a kind of method for controlling street lamps according to claim 3, it is characterised in that certain delay is 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591669.7A CN105120573B (en) | 2015-09-16 | 2015-09-16 | A kind of streetlight control circuit and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591669.7A CN105120573B (en) | 2015-09-16 | 2015-09-16 | A kind of streetlight control circuit and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105120573A CN105120573A (en) | 2015-12-02 |
| CN105120573B true CN105120573B (en) | 2018-05-22 |
Family
ID=54668392
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510591669.7A Active CN105120573B (en) | 2015-09-16 | 2015-09-16 | A kind of streetlight control circuit and control method |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201114941Y (en) * | 2007-09-10 | 2008-09-10 | 重庆鑫德勤环保节能开发有限公司 | Intelligent energy-saving street lamp control system |
| DE102011121070A1 (en) * | 2011-12-12 | 2013-06-13 | Martin Baier | Method for automatic switching off of lamp in basement and guest toilet, involves preventing consumption of energy by electronic controller, when lighting is eliminated |
| CN202535604U (en) * | 2012-04-20 | 2012-11-14 | 合肥兴东电器开关有限责任公司 | Streetlight control circuit |
| CN203181394U (en) * | 2013-01-24 | 2013-09-04 | 珠海市蓝德节能科技有限公司 | Gas discharge street lamp electricity-saving appliance |
| CN203775473U (en) * | 2014-03-03 | 2014-08-13 | 上海燎原宏力照明工程有限公司 | Power-saving control cabinet of intelligent street lamp |
| CN104066257B (en) * | 2014-07-15 | 2016-09-28 | 芜湖市政通市政工程有限责任公司 | Public illumination direct current centrally connected power supply light adjusting system and method |
| CN204157107U (en) * | 2014-08-22 | 2015-02-11 | 扬州新扬开关设备有限公司 | A kind of intelligent road-lamp control cabinet |
| CN205005311U (en) * | 2015-09-16 | 2016-01-27 | 中石化南京工程有限公司 | Streetlight control circuit |
-
2015
- 2015-09-16 CN CN201510591669.7A patent/CN105120573B/en active Active
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| CN105120573A (en) | 2015-12-02 |
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