CN104466736B - Intelligent domestic power distribution device with various electricity protection functions - Google Patents

Intelligent domestic power distribution device with various electricity protection functions Download PDF

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Publication number
CN104466736B
CN104466736B CN201410738347.6A CN201410738347A CN104466736B CN 104466736 B CN104466736 B CN 104466736B CN 201410738347 A CN201410738347 A CN 201410738347A CN 104466736 B CN104466736 B CN 104466736B
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module
power distribution
detection module
intelligent domestic
power
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CN201410738347.6A
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CN104466736A (en
Inventor
徐炜
徐胜彦
尤佳
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Wenzhou Medical University
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Wenzhou Medical University
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24Circuit arrangements for boards or switchyards
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks
    • H02J13/0013Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit
    • H02J13/0017Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit with direct transmission between the control or monitoring unit and the controlled or monitored unit
    • H02J13/0075Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit with direct transmission between the control or monitoring unit and the controlled or monitored unit using radio means
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20Smart grids as enabling technology in buildings sector
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/14Protecting elements, switches, relays or circuit breakers
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Abstract

The invention provides an intelligent domestic power distribution device with various electricity protection functions. The intelligent domestic power distribution device with the various electricity protection functions comprises a bus breaker, a residual current detection module, a power isolation transformer, a voltage phase sequence detection module, a load current detection module used for conducting current detection on all branches, an analog signal conditioning module used for amplifying and transmitting detection signals of the load current detection module, an MCU system used for main control, a power module, a communication module, a branch breaking controller capable of controlling the on-off states of the branches, an alarm control driving module, and an integral low-voltage electric product installed in a universal power distribution box, wherein the power isolation transformer and the voltage phase sequence detection module are located in front of the electrical position of the bus breaker. By the adoption of the intelligent domestic power distribution device with the various electricity protection functions, intelligent power distribution of a single-phase or three-phase alternating-current power supply in a house is achieved, and intelligent electricity protection, intelligent monitoring and intelligent control are also achieved.

Description

A kind of intelligent domestic power distribution equipment with multiple electricity protection functions
Technical field
The present invention relates to house power distribution and low pressure electricity protection technical field, more particularly to by multiple guarantors of low pressure electricity consumption Protect Integration ofTechnology and constitute the electronic technology field of the low voltage electrical devices with domestic distributing function of an intelligence, simultaneously It is related to smart home field.
Background technology
The house power distribution of current home installs guide rail usually first in Residential distribution box case, then installs on guide rail The total air switch (chopper) of single-phase or three-phase inlet wire, then connected different to specification with the wire of different colours different size Each single-phase or three-phase branch air switch.Inlet wire main breaker usually joins earth leakage protective device, therefore, is often leaked electricity using one Chopper is as inlet wire main breaker.In today that technology is showing improvement or progress day by day, safety requirements improves constantly, it deposits such distribution box Weak point more and more can not be ignored:
(1) although distribution box is to produce by GB, distribution box inner breaker and wire are manually installed, there is matter The amount factors of instability;
(2) miniature circuit breaker being adopted in distribution box now is mostly magnetic saturation type chopper, and no matter instantaneous trip is whole Determine electric current or the precision of the setting current of overload protection and setting time is not high, error is big, and product parameters discreteness Greatly, some products only have overload protection function;
(3) there is no distribution line electrical fire monitoring and protection in existing distribution system, only at inlet wire bus equipped with The electric shock earth leakage protective device of the protection person is that is to say, that the classification being not carried out residual current in current house power distribution is protected Shield, easily causes misoperation or protection is not in place causes personnel, the danger of equipment and loss, and be ac type residual current mostly Protector, in the face of more and more many frequency conversion electrical equipment and high frequency electrical equipment, it is perfectly safe usually to cannot ensure;
(4) existing distribution system cannot realize intelligent power distribution and Based Intelligent Control, a set of scheme of electric power in often one building building. If the load of a certain branch changes, need to make chopper play practical electricity protection to be necessary for changing in corresponding branch Chopper.This is accomplished by spending additional time cost and material cost, and therefore, most resident families are all ineffective at present The change of electric loading will be with this there is potential safety hazard;
(5) if using existing house power distribution scheme, such as resident family will realize housing intelligent, realize monitoring, control electricity Device equipment, it is necessary to separately join house intelligence system, so can cause to connect up the waste with equipment.
Content of the invention
The object of the invention is to produce a low-voltage electrical apparatus with intelligent power distribution, electricity protection and branch control function produces Product, replace and adopt now the house power distribution system that the discrete air-break of different size and wire are constituted in Residential distribution box System.
The present invention provides a kind of intelligent domestic power distribution equipment with multiple electricity protection functions, and it is as an entirety Low-pressure electronic equipment product is installed in general household distribution box, described intelligent domestic power distribution equipment by access a road is single-phase or three-phase Alternating current power supply is distributed into multiple single-phase or three-phase alternating current output branch;Described intelligent domestic power distribution equipment includes: bus disconnecting switch, Residual current detection module, the power isolation transformer being arranged on bus disconnecting switch electrical front end position and voltage phase sequence detection mould Block, the load current detection module that each branch is carried out with current detecting, the signal that load current detection module is detected are carried out Amplify the analog signal conditioner module being transferred from, the mcu system playing master control effect and power module, communication module, branch can be controlled The branch broken-circuit controller of break-make and controlling alarm drive module;Described residual current detection module is divided into and being arranged in bus The first order residual current detection module for circuit fire monitoring and in branch for preventing human electric shock second Level residual current detection module.
Described power isolation transformer and voltage phase sequence detection module include isolating transformer or insulating power supply module, and pacify It is loaded on bus disconnecting switch electrical front end position.
Described communication module includes any one or more eib, rs485, wifi, bluetooth, power line carrier, PLC, zigbee Communication mode.
Multiple intelligent domestic power distribution equipments carry out the large-scale dwelling house power distribution system forming when parallel connection or cascade by electric lines of force And controlling network, and there is routing function wherein.
Described mcu system and power module, communication module and analog signal conditioner module form a selv system.
The beneficial effect of the invention is: is installed on the overall low-pressure electronic equipment product in universal power distribution case, realizes premises single-phase Or the intelligent power distribution of three-phase alternating-current supply, intelligent power protection, intellectual monitoring and control;It is arranged on the residual current inspection in bus Survey the electric leakage of module check premises power line, in order to prevent the electrical fire causing because of distribution line electric leakage, in wall power Socket and its major function of residual current detection module connecting installation in the output branch being easily accessible by electric appliance casing are to prevent The dangerous generation of human electric shock;Be easy to expand is intelligent domestic system.
Brief description
Fig. 1 is the internal structure schematic diagram of the present invention.
Fig. 2 is the parallel connection of the present invention and the schematic diagram cascading in relatively large house.
Specific embodiment
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings:
As shown in figure 1, the present invention provides a kind of intelligent domestic power distribution equipment with multiple electricity protection functions, its conduct The low-pressure electronic equipment product of one entirety is installed in general household distribution box 0, described intelligent domestic power distribution equipment 10 by access One tunnel is single-phase or three-phase alternating-current supply is distributed into multiple single-phase or three-phase alternating current output branch, described intelligent domestic power distribution equipment 10 Including: bus disconnecting switch 2, residual current detection module 3, the power isolation transformer in bus disconnecting switch 2 electrical front end position And voltage phase sequence detection module 11, the load current detection module 8 that each branch is carried out with current detecting and load current inspection The signal surveying module detection is amplified the analog signal conditioner module 4 being transferred from, the mcu system playing master control effect and power module 6th, branch broken-circuit controller 7 and the controlling alarm drive module 9 of branch break-make can be controlled.
The voltage signal of power isolation transformer and voltage phase sequence detection module 11 offer, residual current detection module 3 carry For current signal and from load current detection module 8 obtain load current signal all enter analog signal conditioner module 4, signal Enter to amplify the adc input that conditioning is connected to mcu system 6 to suitable level, meanwhile, analog signal conditioner module 4 further comprises Each shunt loading current signal is carried out with the comparator that threshold value compares, the output of this comparator can be linked to mcu system 6 Interrupting input end is it is also possible to carry out driving branch broken-circuit controller after logical operation with output drive signal in mcu system 6 7.
It is connected to each shunt loading current signal, bus and the branch of adc input after analog signal conditioner module 4 Residual current signal, the waveform of each ac voltage signal are all the pulsating direct current waveforms in half AC wave shape after all wave rectification. Mcu system carries out ad sampling to these waveforms, is converted into digital signal, and calculates the virtual value of these signals of telecommunication and apply quick Method identification transient fault electric current and distortion residual current, thus realize carrying out various guarantors to the electrical appliance in branch and the person Shield.
The rated current of each branch and overload protection, short-circuit protection, instantaneous protection setting parameter can be by this The mcu system 6 of device carries out communicating setting with outer computer or smart machine using any medium in communication module 5.
Invention increases the dwelling house power distribution system unexistent wink that the small-sized pyromagnetic air-break of existing dependence is constituted When defencive function, and correct for the defect that its various Protection parameters discreteness is big, usually can not correctly carry out cascade protection.
Described power isolation transformer and voltage phase sequence detection module 11 include isolating transformer or insulating power supply module.Electricity Source isolating transformer and voltage phase sequence detection module 11 use an isolating transformer (single-phase or three-phase) or insulating power supply module The DC power system (including providing required 24v DC source for eib bus) on floating ground is provided for whole device, meanwhile, is Over-and under-voltage protection, phase shortage and phase sequence provide ac voltage signal.
The present invention takes from isolating transformer in analog signal conditioner module 4 or the voltage signal of insulating power supply module is gone forward side by side Row judging phase order, this is particularly important for the electrical equipment of three-phases more and more in large-scale house, and increased existing house and join Unexistent under-voltage over-voltage protecting function in electric system.
By the output branch broken-circuit controller 7 of the bus broken circuit electrical equipment 2 of single-phase or three-phase and single-phase or three-phase and this Device internal wiring realizes house domestic distributing function;The electric rear end of bus broken circuit electrical equipment 2 and each output branch all connect There is residual current detection module 3, the phase line of each branch all has load current detection module 8.
The remaining electricity of the first order for circuit fire monitoring that described residual current detection module 3 is separately positioned in bus The load current detection module for preventing human electric shock on stream detection module and branch.Residual current detection in bus Major function is responsible for checking the electric leakage of premises power line, in order to prevent the electrical fire causing because of distribution line electric leakage, its Remaining non-operating current is arranged on no more than 300ma.The output being easily accessible by electric appliance casing in wall power sockets and connection divides Its major function of residual current detection installed on road is the generation preventing human electric shock dangerous, its remaining non-operating current setting In no more than 30ma.
In the recognizer of residual current virtual value, for due in family frequency conversion electrical equipment and high frequency electrical equipment more and more many Residual current waveform presents situations such as sinuous pulsation DC waveform or incomplete irregular pulsating direct current waveform, employs direct current The methods such as tracking, differential threshold judgement and mean power estimation combine, and rapidly and accurately calculate virtual value, are capable of a The function of type residual current operated protective device is it is ensured that the accuracy of residual current protection action.
The residual current that first order residual current detection module in bus is detected is the total surplus electricity of certain premises Stream, is that each is mounted with the upper all remaining electricity of the branch of second level residual current detection module and other branches (as lamp wiring) The summation of stream.Therefore, apparatus of the present invention can detect the arc resistance short circuit causing because of loose contact at the breakage of line insulation layer, wiring Produced residual current, thus the generation of comprehensive preventing electric fire.Such as transship as the other reasonses causing electrical fire, Short circuit, circuit are overheated, are prevented by residual current detection module and multisection type electricity protection mechanism.
It is equipped with load current detection module in the phase line of each output branch, can be with the load electricity of accurate measurement branch Stream;The whole of each branch overload protection, short-circuit protection and instantaneous protection can be set by the communication module of apparatus of the present invention simultaneously Determine parameter, therefore each resident family can accurately configure according to oneself family each branch power load size and set the whole of each branch Determine parameter it is possible to adjust the setting parameter of corresponding branch in time in load variations in the future.
It is electric wiring field range industry standard the widest and product standard that described communication module 5 includes eib(), Rs485, wifi, bluetooth, power line carrier, PLC, zigbee communication mode.Communication module 5 uses one or more modes and outside Equipment (outside display keyboard equipment, external lights operational control panel, house light lighting network control, the second of a premises Individual apparatus of the present invention) communicated and controlled.In addition, various desk-top, mobile computers and other Intelligent mobile equipments can also lead to Cross usb, wifi and bluetooth approach is communicated with apparatus of the present invention, each electricity protection setting parameter is configured, with When also remote control can respectively export the break-make of branch.
By one or more of the communication module 5 of intelligent domestic power distribution equipment 10 medium and intelligent domestic power distribution equipment 10 joining external equipments can be that the intelligent universal of the app having run the issue of this intelligent domestic power distribution equipment 10 manufacturer divides Road (as smart mobile phone, panel computer etc.) or the special peripheral hardware supporting with intelligent domestic power distribution equipment 10.
Multiple intelligent domestic power distribution equipments 10 carry out the large-scale house power distribution system forming when parallel connection or cascade by electric lines of force In system and controlling network, there is routing function.
The present invention is in the large-scale dwelling house power distribution system and controlling network carrying out by electric lines of force forming when parallel connection or cascade There is routing function, that is, under a present invention, the operating control signal of bus apparatus can be for transmission to bus under another present invention Operation display device or the break-make controlling a certain branch in another present invention.
In relatively large premises, in order that indoor power line is arranged to safer and succinct, multiple intelligence can be adopted Can domestic power distribution equipment 10 be connected using in parallel or cascade mode, as shown in Fig. 2.In this manner, intelligent domestic distribution The mcu system of device 10 and communication module, act as the effect of router.Pass through to operate eib or rs485 in a certain region total Display operation equipment on line, can control the electricity consumption branch in other region, the smart machine in branch (as lighting network control, Electrically driven curtain, intelligent aeration equipment) or eib the or rs485 bus that is connected with another intelligent domestic power distribution equipment 10 on display Operation equipment.
Described mcu system, power module, communication module and analog signal conditioner module form a selv system.selv System i.e. selv circuit refer to safety extra low voltage (SELV) circuit, that is, made the secondary circuit of suitable design and protection so that Under normal condition or under the conditions of single failure, between the palp parts of any two, and arbitrarily accessible parts Voltage and the protective grounding terminal (only to i kind equipment) of equipment between, all not over safety value.
In this system, ceiling voltage is the direct current 24v power supply required for eib bus.Apparatus of the present invention 10 are also to use Rs485 mode connects the external equipment (outside display keyboard equipment, external lights operational control panel) of this device communication module 5 5 ~ 12v DC source is provided.
A road is single-phase or three-phase incoming transport source is converted into multiple single-phase or three-phase alternating current output branch realizing for the present invention Process of distributing electricity in, be simultaneously achieved following multiple electricity protection function: two grades of residual current detections and protection, total loop and The overload anti-time limit characteristic protection of (part or all of) branch, short circuit curve protection, temporal properties protection, circuit fire detection Warning, under-voltage, overvoltage and open-phase protection, Phase sequence detection or phase line zero line dislocation protection.The present invention is with embedded mcu as core Pericardium module containing residual current detection, each shunt loading current detection module, voltage detecting, phase sequence and dislocation detection module, Power module and communication module.Communication module has multiple communication medias, and external equipment can arrange this by communication module Each bright Protection parameters.In addition, the present invention can be connected with multiple, different peripheral, constitute intelligent domestic system, Can be connected with other intelligent domestic systems, thus realizing the remote control to each branch, remote measurement, remote sensing.
Embodiment is not construed as limitation of the present invention, but any spiritual improvements introduced based on the present invention, all should be Within protection scope of the present invention.

Claims (4)

1. a kind of intelligent domestic power distribution equipment with multiple electricity protection functions it is characterised in that: it is as an entirety Low-pressure electronic equipment product is installed in general household distribution box (0), and described intelligent domestic power distribution equipment (10) will be single for the road accessed Phase or three-phase alternating-current supply are distributed into multiple single-phase or three-phase alternating current output branch;Described intelligent domestic power distribution equipment (10) bag Include: bus disconnecting switch (2), residual current detection module (3), be arranged on bus disconnecting switch electrical front end position isolated from power become Depressor and voltage phase sequence detection module (11), each branch is carried out with the load current detection module (8) of current detecting, to load Current detection module detection signal be amplified be transferred from analog signal conditioner module (4), play master control act on mcu system and Power module (6), communication module (5), the branch broken-circuit controller (7) that branch break-make can be controlled and controlling alarm drive module (9);Described residual current detection module (3) is divided into the first order residual current for circuit fire monitoring being arranged in bus Detection module and the second level residual current detection module for preventing human electric shock in branch, multiple intelligent domestic distribution Device (10) carries out large-scale dwelling house power distribution system and the controlling network forming when parallel connection or cascade by electric lines of force, and has wherein There is routing function.
2. a kind of intelligent domestic power distribution equipment with multiple electricity protection functions according to claim 1, its feature exists Include isolating transformer or insulating power supply module in, described power isolation transformer and voltage phase sequence detection module (11), and pacify It is loaded on bus disconnecting switch electrical front end position.
3. a kind of intelligent domestic power distribution equipment with multiple electricity protection functions according to claim 1, its feature exists Include any one or more eib in, described communication module (5), rs485, wifi, bluetooth, power line carrier, PLC, zigbee lead to Letter mode.
4. a kind of intelligent domestic power distribution equipment with multiple electricity protection functions according to claim 1, its feature exists Form a selv system in, described mcu system and power module, communication module and analog signal conditioner module (4).
CN201410738347.6A 2014-12-08 2014-12-08 Intelligent domestic power distribution device with various electricity protection functions Active CN104466736B (en)

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* Cited by examiner, † Cited by third party
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CN104810733A (en) * 2015-05-11 2015-07-29 惠州市豪美氏智能电气有限公司 Intelligent power distribution box
CN106169976A (en) * 2016-04-07 2016-11-30 北京大学 A kind of service system based on novel intelligent home gateway
CN105978148B (en) * 2016-06-15 2019-03-22 湖南省奥能星科技有限公司 The domestic intelligent safe distribution of electric power system and its long-distance monitoring method that can remotely monitor
CN108110999B (en) 2016-11-23 2020-10-16 台达电子工业股份有限公司 Power distribution device and operation method thereof
CN110769012A (en) * 2018-07-25 2020-02-07 广州行业圈数据科技有限公司 Equipment control and management device based on Internet of things and intelligent analysis system
CN110824245A (en) * 2019-11-12 2020-02-21 南昌工程学院 Semi-invasive load monitoring system and method applied to household distribution box and application
CN110829592A (en) * 2019-11-12 2020-02-21 江西派源科技有限公司 Semi-invasive household load monitoring method
CN112290415A (en) * 2020-10-20 2021-01-29 任静 Electric shock prevention intelligent power supply system

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CN203367963U (en) * 2013-07-23 2013-12-25 杭州四方博瑞数字电力科技有限公司 Intelligent endpoint power supply controller

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