CN106354074B - A kind of two mode switch interlocking control circuit applied to aviation liquid cooling system - Google Patents
A kind of two mode switch interlocking control circuit applied to aviation liquid cooling system Download PDFInfo
- Publication number
- CN106354074B CN106354074B CN201611055979.8A CN201611055979A CN106354074B CN 106354074 B CN106354074 B CN 106354074B CN 201611055979 A CN201611055979 A CN 201611055979A CN 106354074 B CN106354074 B CN 106354074B
- Authority
- CN
- China
- Prior art keywords
- jzc
- feet
- relay
- diode
- relay jzc
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21014—Interface, module with relays
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Programmable Controllers (AREA)
- Relay Circuits (AREA)
Abstract
The present invention is a kind of two mode switch interlocking control circuit applied to aviation liquid cooling system, this circuit includes that interlock circuit and switching circuit according to control logic intelligent control switch pass through interlock circuit, it avoids automatically and manually control to interact, eliminates the interference of personnel misoperation.The present invention is used for for the first time in aviation liquid cooling system, and required component is few, and circuit is simple, practical reliable, improves product stability, reliability and applicability.
Description
Technical field
The present invention is a kind of two mode switch interlocking control circuit applied to aviation liquid cooling system, belongs to electrical technology neck
Domain.
Background technique
At present in aviation liquid cooling system, in order to automatically and manually control system, avoid interacting under double mode,
Product need to design two mode switch interlocking control circuit.
Product at the scene actual motion when, automatically and manually mode can interact, under MANUAL CONTROL mode, system starting
Operation needs personnel to operate, and cannot achieve automatic starting, and be easy faulty operation;Under automatic control mode, vulnerable to manual behaviour
It interferes, causes maloperation.
Summary of the invention
The present invention is a kind of two mode switch interlocking control circuit applied to aviation liquid cooling system, this circuit includes interlocking
Circuit and switching circuit, by interlock circuit, it is mutual to avoid automatically and manually control according to control logic intelligent control switch
It influences, eliminates the interference of personnel misoperation.The present invention is used for for the first time in aviation liquid cooling system, and required component is few, circuit letter
It is single, it is practical reliable, improve product stability, reliability and applicability.
The purpose of the present invention is what is realized by following technical measures:
This kind is applied to the two mode switch interlocking control circuit of aviation liquid cooling system, including digital processing chip
TMS320F2812, relay JZC-102ME-K1, relay JZC-102ME-K2, relay JZC-102ME-K3, relay
JZC-102ME-K4, optocoupler (G) HRG3105M-1, diode V1, diode V2, diode V3, diode V4, diode V5,
Diode V6, resistance R1, resistance R2 switch switch K1, start switch K2, valve K3;The mutual lock control of the two mode switch
4 feet of one end of the PA0 foot connecting resistance R2 of digital processing chip TMS320F2812 and optocoupler (G) HRG3105M-1 in circuit, number
1 foot of the PB0 foot contact relay JZC-102ME-K2 of word processing chip TMS 320 F 2812 and the anode and relay of diode V2
1 foot of device JZC-102ME-K3 and the anode of diode V3, the 2 of the PB1 foot contact relay JZC-102ME-K4 of TMS320F2812
The other end of the anode of foot and diode V4, resistance R2 is power supply+3.3V input, and 3 feet of optocoupler (G) HRG3105M-1 connect switching
One end of switch K1 switches 1 foot of another relay termination JZC-102ME-K1 of switch K1 and the anode of diode V1, optocoupler
(G) 2 feet of HRG3105M-1 connect the one end for starting switch K2, and another termination switching switch K1 and power supply 0V for starting switch K2 is defeated
Enter, one end of the 1 foot connecting resistance R1 of optocoupler (G) HRG3105M-1, the 2 of another relay termination JZC-102ME-K1 of resistance R1
The cathode of foot and diode V1,1 foot of relay JZC-102ME-K1 meet the anode of diode V1, relay JZC-102ME-K1
2 feet meet cathode and the power supply+27V input of diode V1,4 feet of relay JZC-102ME-K1 and 7 foot contact relay JZC-
4 feet and power supply+27V of 102ME-K2 input, 3 feet of relay JZC-102ME-K1 and 6 foot contact relay JZC-102ME-K2
7 feet, 2 feet and 5 feet of 5 feet of relay JZC-102ME-K1 and 8 foot contact relay JZC-102ME-K2, relay JZC-
1 foot of 102ME-K2 connects the anode of diode V2, and 2 feet of relay JZC-102ME-K2 connect the cathode of diode V2, relay
5 feet and 8 feet of 2 feet of JZC-102ME-K2 and 5 foot contact relay JZC-102ME-K3,1 foot of relay JZC-102ME-K3
The anode of diode V3 is connect, 2 feet of relay JZC-102ME-K3 connect cathode and the power supply+27V input of diode V3, relay
4 feet and 7 feet of JZC-102ME-K3 connect 4 feet and 7 feet of contact relay JZC-102ME-K4, and the 1 of relay JZC-102ME-K4
Foot connects the cathode of diode V4 and power supply+27V input, 2 feet of relay JZC-102ME-K4 connect the anode of diode V4, relay
5 feet of device JZC-102ME-K4 connect the anode of diode V5, and 3 feet of relay JZC-102ME-K4 connect the anode of diode V6,
The cathode of diode V5 takes over a job the open position of door switch K3 and valve opens output, and the cathode of diode V6 takes over a job door switch K3's
Close stance and valve close output, 6 feet of the public relay termination JZC-102ME-K2 of valve K3.
Foregoing circuit working principle is:Digital processing chip TMS320F2812 be used to realize low and high level input and output, after
Electric appliance JZC-102ME-K1, relay JZC-102ME-K2, relay JZC-102ME-K3, relay JZC-102ME-K4 are used to
Gate control signal living is exported, optocoupler (G) HRG3105M-1, resistance R1, resistance R2 are used to input to start switch level signal, two poles
Pipe V1, diode V2, diode V3, diode V4 be used to for relay JZC-102ME-K1, relay JZC-102ME-K2, after
Electric appliance JZC-102ME-K3, relay JZC-102ME-K4 afterflow, diode V5, diode V6 are used to prevent opposite direction voltage
Switching switch K1, input starts switch K2, valve K3 for realizing that switch control signal inputs.
When switching switch K1 disconnection, circuit works in a manual mode, and relay JZC-102ME-K1 connects normally closed touching
Point, relay JZC-102ME-K2 connect normally-closed contact, and power supply+27V input is connect with the common end valve K3;Staff
Realize that valve is opened, shutdown signal exports by operation valve K3.Even if staff's maloperation starts switch K2, also not
Relay JZC-102ME-K1, relay JZC-102ME-K2 on-state can be changed, can avoid maloperation interference.
When switching switch K1 closure, circuit works in automatic mode, and relay JZC-102ME-K1 connects normally opened touching
Point starts switch K2 and exports low useful signal and give optocoupler (G) HRG3105M-1, optocoupler (G) when starting switch K2 closure
HRG3105M-1 exports low useful signal and gives digital processing chip TMS320F2812, digital processing chip TMS320F2812 output
Low effective control signal is to relay JZC-102ME-K2, relay JZC-102ME-K3, relay JZC-102ME-K2, relay
Device JZC-102ME-K3 connects normally opened contact, and power supply+27V input is connect with 4,7 feet of relay JZC-102ME-K4;At number
Chip TMS 320 F 2812 is managed according to system logic, automatic control relay JZC-102ME-K4 connects normally-closed contact or normally opened touching
Point realizes that valve is opened, shutdown signal exports.
When switching switch K1 closure, circuit works in automatic mode, after starting switch K2 closure, relay JZC-
102ME-K2, which connects normally opened contact, will not change relay even if staff's maloperation starts switch K2, valve K3
The on-state of JZC-102ME-K2, power supply+27V input is remained to be connect with 4,7 feet of relay JZC-102ME-K4, can
Maloperation is avoided to interfere.
Detailed description of the invention
Fig. 1 is the schematic diagram of circuit of the present invention
Specific embodiment
Technical solution of the present invention is further described in conjunction with the accompanying drawings and embodiments with knit stitch:
Referring to figure 1, a kind of two mode switch interlocking control circuit applied to aviation liquid cooling system, including number
Handle chip TMS 320 F 2812, relay JZC-102ME-K1, relay JZC-102ME-K2, relay JZC-102ME-K3,
Relay JZC-102ME-K4, optocoupler (G) HRG3105M-1, diode V1, diode V2, diode V3, diode V4, two poles
Pipe V5, diode V6, resistance R1, resistance R2 switch switch K1, start switch K2, valve K3, it is characterised in that:This pair
One end of the PA0 foot connecting resistance R2 of digital processing chip TMS320F2812 and optocoupler (G) in mode switch interlocking control circuit
4 feet of HRG3105M-1,1 foot of the PB0 foot contact relay JZC-102ME-K2 of digital processing chip TMS320F2812 and two poles
The PB1 foot of the anode of the anode of pipe V2 and 1 foot of relay JZC-102ME-K3 and diode V3, TMS320F2812 is succeeded
2 feet of electric appliance JZC-102ME-K4 and the anode of diode V4, the other end of resistance R2 are power supply+3.3V input, optocoupler (G)
3 feet of HRG3105M-1 connect one end of switching switch K1, switch 1 foot of another relay termination JZC-102ME-K1 of switch K1
The one end for starting switch K2 is connect with 2 feet of the anode of diode V1, optocoupler (G) HRG3105M-1, starts switch the other end of K2
Connect switching switch K1 and power supply 0V input, one end of the 1 foot connecting resistance R1 of optocoupler (G) HRG3105M-1, the other end of resistance R1
2 feet of contact relay JZC-102ME-K1 and the cathode of diode V1,1 foot of relay JZC-102ME-K1 connect diode V1's
Anode, 2 feet of relay JZC-102ME-K1 meet cathode and the power supply+27V input of diode V1, relay JZC-102ME-K1
4 feet and 7 foot contact relay JZC-102ME-K2 4 feet and power supply+27V input, 3 feet of relay JZC-102ME-K1 and 6
7 feet of foot contact relay JZC-102ME-K2,5 feet of relay JZC-102ME-K1 and 8 foot contact relay JZC-102ME-K2
2 feet and 5 feet, 1 foot of relay JZC-102ME-K2 connects the anode of diode V2, and 2 feet of relay JZC-102ME-K2 connect
The cathode of diode V2,5 feet and 8 feet of 2 feet of relay JZC-102ME-K2 and 5 foot contact relay JZC-102ME-K3, after
1 foot of electric appliance JZC-102ME-K3 connects the anode of diode V3, and 2 feet of relay JZC-102ME-K3 connect the cathode of diode V3
It being inputted with power supply+27V, 4 feet and 7 feet of relay JZC-102ME-K3 connect 4 feet and 7 feet of contact relay JZC-102ME-K4,
1 foot of relay JZC-102ME-K4 connects cathode and the power supply+27V input of diode V4,2 feet of relay JZC-102ME-K4
The anode of diode V4 is connect, 5 feet of relay JZC-102ME-K4 connect the anode of diode V5, relay JZC-102ME-K4's
3 feet connect the anode of diode V6, and the cathode of diode V5 takes over a job the open position of door switch K3 and valve opens output, diode V6
Cathode take over a job door switch K3 close stance and valve close output, the public relay termination JZC-102ME- of valve K3
6 feet of K2.
Referring to figure 1, a kind of two mode switch interlocking control circuit working principle applied to aviation liquid cooling system
For:Digital processing chip TMS320F2812 is used to realize low and high level input and output, relay JZC-102ME-K1, relay
JZC-102ME-K2, relay JZC-102ME-K3, relay JZC-102ME-K4 are used to export gate control signal living, optocoupler
(G) HRG3105M-1, resistance R1, resistance R2 are used to input to start switch level signal, diode V1, diode V2, diode
V3, diode V4 be used to for relay JZC-102ME-K1, relay JZC-102ME-K2, relay JZC-102ME-K3, after
Electric appliance JZC-102ME-K4 afterflow, diode V5, diode V6 are used to switching switch K1, open to prevent opposite direction voltage input
Dynamic switch K2, valve K3 are used to realize that switch control signal inputs.
When switching switch K1 disconnection, circuit works in a manual mode, and relay JZC-102ME-K1 connects normally closed touching
Point, relay JZC-102ME-K2 connect normally-closed contact, and power supply+27V input is connect with the common end valve K3;Staff
Realize that valve is opened, shutdown signal exports by operation valve K3.Even if staff's maloperation starts switch K2, also not
Relay JZC-102ME-K1, relay JZC-102ME-K2 on-state can be changed, can avoid maloperation interference.
When switching switch K1 closure, circuit works in automatic mode, and relay JZC-102ME-K1 connects normally opened touching
Point starts switch K2 and exports low useful signal and give optocoupler (G) HRG3105M-1, optocoupler (G) when starting switch K2 closure
HRG3105M-1 exports low useful signal and gives digital processing chip TMS320F2812, digital processing chip TMS320F2812 output
Low effective control signal is to relay JZC-102ME-K2, relay JZC-102ME-K3, relay JZC-102ME-K2, relay
Device JZC-102ME-K3 connects normally opened contact, and power supply+27V input is connect with 4,7 feet of relay JZC-102ME-K4;At number
Chip TMS 320 F 2812 is managed according to system logic, automatic control relay JZC-102ME-K4 connects normally-closed contact or normally opened touching
Point realizes that valve is opened, shutdown signal exports.
When switching switch K1 closure, circuit works in automatic mode, after starting switch K2 closure, relay JZC-
102ME-K2, which connects normally opened contact, will not change relay even if staff's maloperation starts switch K2, valve K3
The on-state of JZC-102ME-K2, power supply+27V input is remained to be connect with 4,7 feet of relay JZC-102ME-K4, can
Maloperation is avoided to interfere.
Claims (1)
1. a kind of two mode switch interlocking control circuit applied to aviation liquid cooling system, including digital processing chip
TMS320F2812, relay JZC-102ME-K1, relay JZC-102ME-K2, relay JZC-102ME-K3, relay
JZC-102ME-K4, optocoupler (G) HRG3105M-1, diode V1, diode V2, diode V3, diode V4, diode V5,
Diode V6, resistance R1, resistance R2 switch switch K1, start switch K2, valve K3;It is characterized in that:The double mode is opened
Close one end of the PA0 foot connecting resistance R2 of digital processing chip TMS320F2812 and optocoupler (G) in interlocking control circuit
4 feet of HRG3105M-1,1 foot of the PB0 foot contact relay JZC-102ME-K2 of digital processing chip TMS320F2812 and two poles
The PB1 foot of the anode of the anode of pipe V2 and 1 foot of relay JZC-102ME-K3 and diode V3, TMS320F2812 is succeeded
2 feet of electric appliance JZC-102ME-K4 and the anode of diode V4, the other end of resistance R2 are power supply+3.3V input, optocoupler (G)
3 feet of HRG3105M-1 connect one end of switching switch K1, switch 1 foot of another relay termination JZC-102ME-K1 of switch K1
The one end for starting switch K2 is connect with 2 feet of the anode of diode V1, optocoupler (G) HRG3105M-1, starts switch the other end of K2
Connect switching switch K1 and power supply 0V input, one end of the 1 foot connecting resistance R1 of optocoupler (G) HRG3105M-1, the other end of resistance R1
2 feet of contact relay JZC-102ME-K1 and the cathode of diode V1,1 foot of relay JZC-102ME-K1 connect diode V1's
Anode, 2 feet of relay JZC-102ME-K1 meet cathode and the power supply+27V input of diode V1, relay JZC-102ME-K1
4 feet and 7 feet, relay JZC-102ME-K2 4 feet be connected to power supply+27V input, 3 feet of relay JZC-102ME-K1
With 7 feet of 6 foot contact relay JZC-102ME-K2,5 feet of relay JZC-102ME-K1 and 8 foot contact relay JZC-102ME-
2 feet and 5 feet of K2,1 foot of relay JZC-102ME-K2 connect the anode of diode V2,2 feet of relay JZC-102ME-K2
Connect the cathode of diode V2,5 feet and 8 feet of 2 feet of relay JZC-102ME-K2 and 5 foot contact relay JZC-102ME-K3,
1 foot of relay JZC-102ME-K3 connects the anode of diode V3, and 2 feet of relay JZC-102ME-K3 connect the negative of diode V3
Pole and power supply+27V input, 4 feet and 7 feet of relay JZC-102ME-K3 connect 4 feet and 7 of contact relay JZC-102ME-K4
Foot, 1 foot of relay JZC-102ME-K4 connect cathode and the power supply+27V input of diode V4, relay JZC-102ME-K4's
2 feet connect the anode of diode V4, and 5 feet of relay JZC-102ME-K4 meet the anode of diode V5, relay JZC-102ME-
3 feet of K4 connect the anode of diode V6, and the cathode of diode V5 takes over a job the open position of door switch K3 and valve opens output, two poles
The cathode of pipe V6 take over a job door switch K3 close stance and valve close output, the public relay termination JZC- of valve K3
6 feet of 102ME-K2;
When switching switch K1 disconnection, circuit works in a manual mode, and relay JZC-102ME-K1 connects normally-closed contact, after
Electric appliance JZC-102ME-K2 connects normally-closed contact, and power supply+27V input is connect with the common end valve K3;Staff passes through
It operates valve K3 and realizes that valve is opened, shutdown signal exports, even if staff's maloperation starts switch K2, will not change
Become relay JZC-102ME-K1, relay JZC-102ME-K2 on-state, can avoid maloperation interference;
When switching switch K1 closure, circuit works in automatic mode, and relay JZC-102ME-K1 connects normally opened contact, when
When starting switch K2 closure, starts switch K2 and export low useful signal and give optocoupler (G) HRG3105M-1, optocoupler (G) HRG3105M-
1, which exports low useful signal, gives digital processing chip TMS320F2812, digital processing chip TMS320F2812 to export low effective control
Signal processed is to relay JZC-102ME-K2, relay JZC-102ME-K3, relay JZC-102ME-K2, relay JZC-
102ME-K3 connects normally opened contact, and power supply+27V input is connect with 4,7 feet of relay JZC-102ME-K4;Digital processing chip
TMS320F2812 connects normally-closed contact or normally opened contact according to system logic, automatic control relay JZC-102ME-K4, realizes
Valve is opened, shutdown signal exports.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611055979.8A CN106354074B (en) | 2016-11-22 | 2016-11-22 | A kind of two mode switch interlocking control circuit applied to aviation liquid cooling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611055979.8A CN106354074B (en) | 2016-11-22 | 2016-11-22 | A kind of two mode switch interlocking control circuit applied to aviation liquid cooling system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106354074A CN106354074A (en) | 2017-01-25 |
CN106354074B true CN106354074B (en) | 2018-11-16 |
Family
ID=57862678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611055979.8A Active CN106354074B (en) | 2016-11-22 | 2016-11-22 | A kind of two mode switch interlocking control circuit applied to aviation liquid cooling system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106354074B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115432605A (en) * | 2021-06-04 | 2022-12-06 | 中联重科股份有限公司 | Interlocking control circuit and double-tower crane |
CN113320703A (en) * | 2021-06-15 | 2021-08-31 | 天津津航计算技术研究所 | Control circuit applied to airborne electric valve |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040108414A1 (en) * | 2002-06-11 | 2004-06-10 | Determan Thomas G | Hydrant cart fuel management |
CN2781546Y (en) * | 2004-09-21 | 2006-05-17 | 北京科力恒久电力技术有限责任公司 | High-voltage double power supple selfpoperation and mutual operation locking device |
CN201238206Y (en) * | 2008-08-04 | 2009-05-13 | 沈阳沈变电工设备有限公司 | Duplicate-supply intelligent controller for transformer |
US9217376B2 (en) * | 2008-11-13 | 2015-12-22 | Sikorsky Aircraft Corporation | Multi-mode adaptive fail-fixed system for FADEC controlled gas turbine engines |
CN201661176U (en) * | 2010-04-26 | 2010-12-01 | 沈阳宝通门业有限公司 | Gate chamber-free hangar door controller |
CN102689692B (en) * | 2012-06-08 | 2014-08-06 | 中国航空工业集团公司西安飞机设计研究所 | Aerial emergency oil drainage control system and control method for airplane |
CN103016822B (en) * | 2012-12-04 | 2014-08-20 | 哈尔滨工程大学 | Signal simulation circuit for switch type butterfly valve |
CN203996047U (en) * | 2014-08-28 | 2014-12-10 | 王振涛 | Function vehicle multiple-way supply self interlocking control circuit |
CN105529969B (en) * | 2014-09-28 | 2018-03-02 | 中国航空工业集团公司西安飞机设计研究所 | A kind of circuit of double-direction control aircraft DC motor movement |
CN104353394B (en) * | 2014-11-05 | 2017-02-15 | 衡阳市金化科技有限公司 | Full-automatic high-efficient mixing and conveying production line |
CN105422315B (en) * | 2015-11-27 | 2017-06-16 | 湖北三江航天红峰控制有限公司 | A kind of solid propellant rocket release mechanism controls circuit and control method |
-
2016
- 2016-11-22 CN CN201611055979.8A patent/CN106354074B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN106354074A (en) | 2017-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN206401236U (en) | A kind of relay zero-crossing closes disconnecting circuit | |
CN106354074B (en) | A kind of two mode switch interlocking control circuit applied to aviation liquid cooling system | |
CN206271619U (en) | Self-correcting relay anti-adhesion circuit | |
CN203904725U (en) | Door opening protecting circuit of washing machine | |
CN203659688U (en) | Low-voltage circuit breaker automatic closing control device | |
CN208353061U (en) | A kind of passive switch of UPS bypass | |
CN205647540U (en) | Net gape BYPASS system of cutting off power supply controllablely | |
CN208969481U (en) | A kind of faulty action preventing control circuit | |
CN101763965A (en) | Arc sampling arc-distinguishing control device | |
CN203722469U (en) | Contactless power source switching circuit | |
CN213426121U (en) | Access control circuit and access control system product | |
CN101728125A (en) | Circuit breaker with optional control supply voltage | |
CN209389965U (en) | A kind of circuit for controlling motor and beddo for beddo | |
CN202602603U (en) | Alternating current solid relay | |
CN203933461U (en) | A kind of reversing arrangement | |
CN207968454U (en) | A kind of switching circuit and underwater equipment | |
CN203747367U (en) | Alternating current circuit switching-on and switching-off device adopting bidirectional thyristor | |
CN106209046A (en) | A kind of direct current controlled transient response disconnecting switch | |
CN209461380U (en) | The control circuit of magnetic latching relay | |
CN105259813B (en) | There is the smart machine control circuit that state is kept | |
CN205407228U (en) | How compatible three -phase electrical apparatus of low -power consumption low cost versatile protector that opens circuit | |
CN203883789U (en) | Safe energy-saving switch circuit | |
CN208367515U (en) | A kind of compound liquid medicine is equipped with the control circuit of system | |
CN209115313U (en) | A kind of water purifier protection circuit, mainboard and water purifier | |
CN203849359U (en) | Converter station-to-outside feed line single-phase earth fault detection control apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |