CN203589679U - Vehicle-mounted single-phase AC power supply intelligent monitoring unit - Google Patents
Vehicle-mounted single-phase AC power supply intelligent monitoring unit Download PDFInfo
- Publication number
- CN203589679U CN203589679U CN201320633252.9U CN201320633252U CN203589679U CN 203589679 U CN203589679 U CN 203589679U CN 201320633252 U CN201320633252 U CN 201320633252U CN 203589679 U CN203589679 U CN 203589679U
- Authority
- CN
- China
- Prior art keywords
- unit
- resistance
- voltage
- phase
- operational amplifier
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a vehicle-mounted single-phase AC power supply intelligent monitoring unit which comprises a power motherboard and a control board. The power motherboard comprises an auxiliary power supply unit, a lightning protection unit, and a protective action execution unit. The control board comprises a single-phase alternating current detection unit, a single-phase alternating voltage detection unit, an electric leakage detection unit, a master control unit, and a ground state detection unit. The ground state detection unit uses a dual ground detection circuit to measure a ground state. The control board is provided with a CAN bus communication function and a 485 serial bus communication function. The entire monitoring unit has a variety of functions, such as lightning protection, single-phase AC overcurrent/short circuit/electric leakage protection, single-phase AC overvoltage/undervoltage protection, and ground state detection and protection, and provides vehicle drivers with a safer driving environment.
Description
Technical field
The utility model relates to a kind of watch-dog, relates in particular to a kind of for three-phase alternating-current powered watch-dog.
Background technology
At present, in communications industry field, the traditional electricity protection form of the general employing of single phase alternating current (A.C.) controller switching equipment, is combined to form AC distribution equipment as circuit breaker adds lightning-protection module, in order to realize distribution, power consumption equipment is implemented to overload, open circuit protection.
In onboard power system, vehicle intelligent electrical network comprises automobile power source, for electric energy is provided; Intelligent grid control unit, is connected with automobile power source, can complete by control unit the work such as voltage transitions, battery parameter monitoring, battery status estimation, overcurrent protection.But; traditional protection action execution unit only possesses overload, short circuit or creepage protection function; defencive function is single, and vehicle-mounted AC power supply device is not had to comprehensively protection and the indicating effect such as comprehensive overvoltage, under-voltage, short circuit, overload, electric leakage, ground protection.
Due to running car out of doors, often may be subject to the impact of thunder and lightning, therefore must meet to this installation the lightning-protection module of national standard and industry standard, lightning-protection module is when having thunder and lightning invasion power supply or supply line, rapidly lightning current is released into ground, and within the withstand voltage scope that can bear at automobile electrical equipment of the overvoltage Limiting that thunder and lightning is caused.But lightning-protection module is discharging the frequent folding that easily causes protection action executing switch during lightning current, cause the situation such as cannot power continuously, cause automobile cannot recover to travel.
Application number be 200920184834.7 utility model patent proposed a kind of can automatic reclosing and comprehensive, the safe and reliable single-phase intelligent electricity utilization protecting device of safeguard function, comprise main switch, direct current regulation circuit module, single-chip microcomputer, drive circuit module, mistake/undervoltage detection circuit module, short circuit/overload detection circuit module, electric-leakage detection circuit module and failure indicating circuit module.Cross/undervoltage detection circuit module, short circuit/overload detection circuit module, electric-leakage detection circuit module and failure indicating circuit module can detect in real time to power circuit; and by datagram, give single-chip microcomputer and judge processing; if detected while there is the faults such as overvoltage, under-voltage, short circuit, overload, electric leakage in single phase poaer supply circuit; single-chip microcomputer can be in time by drive circuit module control circuit; to protected equipment or System Implementation protection, and there is malfunction indicator lamp.But this utility model, for all electricity protection switches, not specially for onboard power system, lacks the safeguard measure that onboard power system is special procured, still have and need perfect place.The patent of invention that and for example application number is 201310084591.0, discloses a kind of vehicle intelligent electrical network, comprises automobile power source, intelligent grid control unit and automobile supply network.Wherein intelligent grid control unit has the functions such as the controller power source of carrying out conversion, battery parameter monitoring and power supply overcurrent protection, realizes control electricity and separates.Hence one can see that; when current onboard power system is used single-phase 220VAC power supply; earth leakage protective that need to be more perfect; ensure on-board crew life security; also need overcurrent and short circuit monitoring function; avoid overcurrent and short trouble to cause serious consequence, also need to improve the recovery problem after breaking circuit power supply after ground protection function and lightning-protection module work.
Utility model content
The deficiency existing for the traditional electricity protection switch of mentioning in background technology, the purpose of this utility model be to provide a kind of can automatic reclosing and the more comprehensive and safe and reliable vehicle-mounted single-phase ac power supply intelligent monitoring unit of safeguard function.
The vehicle-mounted single-phase ac power supply intelligent monitoring unit of the utility model; comprise power motherboard and control board; wherein power motherboard comprises auxiliary power unit, lightning protection unit and protection action execution unit; control board comprises single-phase alternating current detecting unit, single phase alternating current (A.C.) voltage detecting unit, detection of electrical leakage unit, main control unit and ground state detecting unit.
Wherein, auxiliary power unit, lightning protection unit and protection action execution unit are serially connected between single-phase ac power supply input and single-phase ac power supply output from left to right successively; Single-phase alternating current detecting unit, single phase alternating current (A.C.) voltage detecting unit and detection of electrical leakage unit are connected in parallel between the phase line and center line between described lightning protection unit and protection action execution unit; The signal of single-phase alternating current detecting unit, single phase alternating current (A.C.) voltage detecting unit and the output of detection of electrical leakage unit sends described main control unit to.
Single phase alternating current (A.C.) voltage detecting unit comprises power supply difference sample circuit, the live wire of single phase alternating current power supply input is gathered and voltage regulation filtering processing the voltage of zero line, and the signal of sample circuit output is amplified respectively and inputed to the operational amplifier of main control unit corresponding port.
Detection of electrical leakage unit is provided with operational amplifier, the signal of detection of electrical leakage portion output is amplified respectively and inputs to main control unit corresponding port, and the circuit of described detection of electrical leakage unit also gathers and voltage regulation filtering processing the induction leakage current of single-phase current source.
Ground state detecting unit is composed in parallel by earthed voltage detecting unit and earth resistance detecting unit, earthed voltage detecting unit output earthed voltage detection signal, earth resistance detection signal output earth resistance detection signal.Ground state detecting unit is connected in parallel between carbody shell and pile, and the signal of its output sends described main control unit to, after all signals that described main control unit collects are processed, is converted into control command, sends to protection action execution unit.
The main control unit of the vehicle-mounted single-phase ac power supply intelligent monitoring unit of the utility model is controlled automatic reclosing function in addition, and its single phase alternating current (A.C.) voltage detecting unit has adopted stagnant ring overvoltage/under-voltage control technology and voltage difference sampling principle.Stagnant ring control, is also called the control of ripple adjuster, is about to output voltage and maintains in the hysteresis band centered by reference voltage, and the stagnant ring control of voltage, using voltage as main feedback signal, adopts stagnant ring control to produce main control signal.Stagnant ring control maximum advantage compared with other control modes is its response speed.Stagnant ring control does not need the complicated slow feedback loop of following, and in switch periods, when transient changing occurs, responsive load changes at once, does not have the hysteresis of control signal to sampled signal.
The vehicle-mounted single-phase ac power supply intelligent monitoring unit of the utility model; there is automatic reclosing Protector for using electricity; by CAN bus and 485 serial bus communication functions by equipment interface; use main control unit DSP to control equipment; realize overcurrent, short circuit, overvoltage, under-voltage, creepage protection function, integrated personal electrical shock protection, equipment leakage protection and auto restore facility.Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model, wherein: 1-power motherboard, 2-control board, U1-auxiliary power unit, U2-lightning protection unit, U3-protects action execution unit, U4-single-phase alternating current detecting unit, U5-single phase alternating current (A.C.) voltage detecting unit, U6-detection of electrical leakage unit, U7-main control unit, U8-ground state detecting unit;
Fig. 2 is single phase alternating current (A.C.) voltage detecting unit voltage difference sampling principle figure of the present utility model;
Fig. 3 is ground state detecting unit schematic diagram of the present utility model;
Fig. 4 is detection of electrical leakage of the present utility model unit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail:
As shown in Figure 1, the theory diagram of the vehicle-mounted single-phase ac power supply intelligent monitoring unit of the present embodiment, comprises the power motherboard 1 and the control board 2 that are connected between single-phase ac power supply input and single-phase ac power supply output.
Wherein power motherboard 1 comprises auxiliary power unit U1, lightning protection unit U2 and protection action execution unit U3; control board 2 comprises single-phase alternating current detecting unit U4, single phase alternating current (A.C.) voltage detecting unit U5, detection of electrical leakage unit U6, main control unit U7 and ground state detecting unit U8.Auxiliary power unit U1, carries out voltage stabilizing adjustment by single phase alternating current (A.C.) input signal, then provides power supply to whole control board 2.
Auxiliary power unit U1, lightning protection unit U2 and protection action execution unit U3 are serially connected between single-phase ac power supply input and single-phase ac power supply output successively; Single-phase alternating current detecting unit U4, single phase alternating current (A.C.) voltage detecting unit U5 and detection of electrical leakage unit U6, three is parallel with one another, is connected between the phase line and center line between described lightning protection unit U2 and protection action execution unit U3; Ground state detecting unit U8 is connected between carbody shell and pile, adopt dual ground protection circuit, measure respectively voltage and resistance between car body and pile, two circuit common composition ground state testing circuits parallel with one another, there is data exception in any wherein, can be monitored by main control unit U7; The signal of single-phase alternating current detecting unit U4, single phase alternating current (A.C.) voltage detecting unit U5 and detection of electrical leakage unit U6 and ground state detecting unit U8 output sends main control unit U7 to; main control unit U7 for example, by after all signal processing that collect (: AD conversion); be converted into order; assign to protection action execution unit U3; by protection action execution unit U3, carried out the keying of related switch, so that follow-up power consumption equipment is protected.
In practical application, auxiliary power unit U1 can adopt conventional voltage stabilizing circuit, and input voltage signal is carried out to voltage stabilizing, filtration, and control board 2 is powered.
Lightning protection: in the present embodiment, lightning protection unit U2 can be lightning protection circuit; when the single-phase ac power supply input of the present embodiment has lightning ingress; the voltage at lightning protection unit U2 two ends raises rapidly; lightning protection circuit starts; discharge over the ground electric current; by the voltage clamp at its two ends, below 1500V, its inside can adopt lightening surge preventing protective circuit to carry out secondary and release, and voltage control is in the required scope of onboard power system the most at last.
Overcurrent/short-circuit protection: the electric current of the single-phase alternating current detecting unit U4 Gather and input end input of the present embodiment; the signal gathering is after sample circuit conversion; pass to the AD sampling pin of main control unit U7; the software writing on main control unit U7 carries out AD conversion, adjustment to AD sampling leg signal; obtain the alternating current flow valuve in circuit; program on main control unit U7 is carried out filtering, comparison by certain algorithm to this value; judge whether to exceed reasonable numerical value; corresponding starting protection action execution unit U3, realizes circuit overcurrent, short-circuit protection.
Cross/under-voltage protection: as shown in Figure 2; the single phase alternating current (A.C.) voltage detecting unit U5 of the present embodiment comprises power supply difference sample circuit; the live wire of single phase alternating current power supply input is gathered and voltage regulation filtering processing the voltage of zero line, and the signal of sample circuit output is amplified respectively and inputed to the operational amplifier of main control unit U7 corresponding port.
The live wire of single-phase ac power supply voltage source connects the inverting input that is connected to operational amplifier after some resistance, and the zero line of single-phase ac power supply voltage source connects the in-phase input end that is connected to operational amplifier after some resistance.Negative supply termination-12V power supply of operational amplifier, this power supply connects ground connection after an electric capacity.Positive supply termination+12V power supply of operational amplifier, this power supply is also connected with ground connection after an electric capacity.Between the in-phase input end of operational amplifier and the earth point of positive power source terminal, be parallel with a resistance and an electric capacity.Between the inverting input of operational amplifier and output, be also parallel with a resistance and an electric capacity, the output output line voltage Vuv detection signal of operational amplifier.In the course of the work, single phase alternating current (A.C.) voltage detecting unit U5 carries out difference sampling and sends main control unit U7 to the voltage signal of input input, and this signal, through after AD conversion, is changed, calculated by the program on main control unit U7, draws sampled signal.The output output voltage sampled signal of difference sample circuit; poor being directly proportional of input voltage at this signal and amplifier two ends; itself and predefined overvoltage---higher than U, under-voltage---they are all the voltage swing critical value being set in advance in main control unit program lower than V(U and V) value compares; corresponding starting protection action execution unit U3; realize overvoltage, under-voltage protection.
Ground protection: as shown in Figure 3, the ground state detecting unit U8 of the present embodiment comprises earthed voltage testing circuit parallel with one another and earth resistance testing circuit.
Wherein, earthed voltage testing circuit comprises operational amplifier, its positive supply termination+12V voltage, + 12V voltage is connected to car body end ground connection after connecting capacitor C 3, and operational amplifier in-phase input end is connected with from left to right between diode D1 and resistance R 5 ground anchoring wires and car body line and is also parallel with resistance R 6, Schottky diode Z1 and capacitor C 2.Operational amplifier negative power end ground connection, inverting input is connected to resistance R 4 and resistance R 1, and be connected to+12V voltage, between the mid point of operational amplifier negative power end and resistance R 1, R4, is also parallel with resistance R 2, resistance R 3 and capacitor C 1.Between the in-phase input end of operational amplifier and output, be connected with resistance R 7.The output of operational amplifier is also connected with resistance R 8, and Opposite direction connection has Schottky diode Z2, the minus earth of Z2, and Z2 two ends are parallel with resistance R 9.Earthed voltage detection signal is exported by the midpoint of R8 and Z2.
Earth resistance testing circuit comprises operational amplifier, its positive supply termination+12V voltage, + 12V voltage is connected to car body end ground connection after connecting capacitor C 6, operational amplifier in-phase input end is connected with resistance R 12 from left to right, is also parallel with resistance R 16, Schottky diode Z3 and capacitor C 5 between ground anchoring wire and car body line.Operational amplifier negative power end ground connection, inverting input is connected to resistance R 11 and resistance R 15, and be connected to+12V voltage, is also connected with resistance R 10 between this voltage end and pile.Between the mid point of operational amplifier negative power end and resistance R 11, R15, be also parallel with resistance R 13, resistance R 14 and capacitor C 4.Between the in-phase input end of operational amplifier and output, be connected with resistance R 17.The output of operational amplifier is also connected with resistance R 18, and Opposite direction connection has Schottky diode Z4, the minus earth of Z4, and Z4 two ends are parallel with resistance R 19.Earth resistance detection signal is exported by the midpoint of R18 and Z4.
Earth leakage protective: as shown in Figure 4; the leakage protection circuit of the residual current protective unit U6 of the present embodiment comprises 0 order current transformer and operational amplifier summation current transformer; the inverting input that is connected to operational amplifier after current transformer receiving terminal 6 contact resistance R1, another receiving terminal 5 of current transformer is connected to the in-phase input end of operational amplifier.Between the inverting input of operational amplifier and output, be parallel with resistance R 2, output output leakage current detection signal.In circuit; the electric current that current transformer senses is through resistance and operational amplifier; after realizing filtering, FEEDBACK CONTROL exports again main control unit U7 to; when equipment in car body exists, electric leakage---electric current is greater than A (A is the size of current critical value being set in advance in main control unit U7 program); main control unit U7 sends order to protection action execution unit U3; make its action, realize earth leakage protective.
Protection action execution unit U3 plays the effect of carrying out main control unit U7 order, opens or close the power switch of subsequent conditioning circuit.
In the present embodiment, main control unit can adopt TMS320LF2407A processor (DSP), there are 16 digital-to-analogue conversion sampling channels, comprise multiple I/O interfaces, mostly can interrupt by Configuration, catch, Serial Communication Function, comprise two task manager module EVA and EVB, each module comprises general purpose timer, comparing unit, capturing unit, outside input, quadrate encode module etc.And each general purpose timer comprises up-down counter, timing comparator, period register, control register etc., can select inside and outside clock.Therefore, main control unit can carry out program setting to under-voltage protection voltage, under-voltage recovery voltage, overvoltage protection voltage, overvoltage recovery voltage, overcurrent protection electric current, short circuit current protection, earth leakage protective condition, ground protection condition etc.Therefore; main control unit receives after the signal of single-phase alternating current detecting unit, single phase alternating current (A.C.) voltage detecting unit, detection of electrical leakage unit, ground state detecting unit; by corresponding digital-to-analogue conversion; relatively after judgement; protection action execution unit is assigned to instruction; make its action, play kinds of protect object.
On the basis of a upper embodiment, on main control unit U7, increase at least one of voltage display module, electric current display module, ground state display module, electric leakage situation display module, form display unit, can form another embodiment of the present utility model.Above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model, all should fall in the definite protection range of claims of the present utility model.
Claims (6)
1. a vehicle-mounted single-phase ac power supply intelligent monitoring unit, it is characterized in that, comprise power motherboard (1) and control board (2), described power motherboard (1) comprises auxiliary power unit (U1), lightning protection unit (U2) and protection action execution unit (U3), described control board (2) comprises single-phase alternating current detecting unit (U4), single phase alternating current (A.C.) voltage detecting unit (U5), detection of electrical leakage unit (U6), main control unit (U7) and ground state detecting unit (U8);
Described auxiliary power unit (U1), lightning protection unit (U2) and protection action execution unit (U3) are serially connected between single-phase ac power supply input and output from left to right successively;
Described single-phase alternating current detecting unit (U4), single phase alternating current (A.C.) voltage detecting unit (U5) and detection of electrical leakage unit (U6) are connected in parallel between the phase line and center line between described lightning protection unit (U2) and protection action execution unit (U3), and the output of described single-phase alternating current detecting unit (U4), single phase alternating current (A.C.) voltage detecting unit (U5) and detection of electrical leakage unit (U6) is connected with described main control unit (U7);
Described ground state detecting unit (U8) is connected in parallel between carbody shell and pile, and its output is connected with described main control unit (U7);
Described main control unit (U7) is connected with protection action execution unit (U3).
2. vehicle-mounted single-phase ac power supply intelligent monitoring unit according to claim 1, is characterized in that, described ground state detecting unit (U8) comprises earthed voltage testing circuit in parallel and earth resistance testing circuit,
Described earthed voltage testing circuit comprises operational amplifier, its positive supply termination+12V voltage, + 12V voltage is connected to car body end ground connection after connecting capacitor C 3, operational amplifier in-phase input end is connected with from left to right between diode D1 and resistance R 5 ground anchoring wires and car body line and is also parallel with resistance R 6, Schottky diode Z1, with capacitor C 2, operational amplifier negative power end ground connection, inverting input is connected to resistance R 4 and resistance R 1, and be connected to+12V voltage, operational amplifier negative power end and resistance R 1, between the mid point of R4, be also parallel with resistance R 2, resistance R 3 and capacitor C 1, between the in-phase input end of operational amplifier and output, be connected with resistance R 7, the output of operational amplifier is also connected with resistance R 8, Opposite direction connection has Schottky diode Z2, the minus earth of Z2, Z2 two ends are parallel with resistance R 9, earthed voltage detection signal is exported by the midpoint of R8 and Z2,
Described earth resistance testing circuit comprises operational amplifier, its positive supply termination+12V voltage, + 12V voltage is connected to car body end ground connection after connecting capacitor C 6, operational amplifier in-phase input end is connected with resistance R 12 from left to right, between ground anchoring wire and car body line, be also parallel with resistance R 16, Schottky diode Z3, with capacitor C 5, operational amplifier negative power end ground connection, inverting input is connected to resistance R 11 and resistance R 15, and be connected to+12V voltage, between this voltage end and pile, be also connected with resistance R 10, operational amplifier negative power end and resistance R 11, between the mid point of R15, be also parallel with resistance R 13, resistance R 14 and capacitor C 4, between the in-phase input end of operational amplifier and output, be connected with resistance R 17, its output is also connected with resistance R 18, and Opposite direction connection has Schottky diode Z4, the minus earth of diode Z4, its two ends are parallel with resistance R 19, earth resistance detection signal is exported by the midpoint of R18 and Z4.
3. vehicle-mounted single-phase ac power supply intelligent monitoring unit according to claim 2, it is characterized in that, described single phase alternating current (A.C.) voltage detecting unit (U5) comprises power supply difference sample circuit, the live wire of single phase alternating current power supply input is gathered and voltage regulation filtering processing the voltage of zero line, and the signal of sample circuit output is amplified respectively and inputed to the operational amplifier of main control unit (U7) corresponding port.
4. vehicle-mounted single-phase ac power supply intelligent monitoring unit according to claim 3, it is characterized in that, described power supply difference sample circuit comprises operational amplifier, the live wire of single-phase ac power supply voltage connects the inverting input that is connected to operational amplifier after some resistance, the zero line of single-phase ac power supply voltage connects the in-phase input end that is connected to operational amplifier after some resistance, negative supply termination-12V power supply of operational amplifier, this power supply connects ground connection after an electric capacity, positive supply termination+12V power supply of operational amplifier, this power supply is also connected with ground connection after an electric capacity, between the in-phase input end of operational amplifier and the earth point of positive power source terminal, be parallel with a resistance and an electric capacity, between its inverting input and output, be also parallel with a resistance and an electric capacity, the output output line voltage Vuv detection signal of operational amplifier.
5. vehicle-mounted single-phase ac power supply intelligent monitoring unit according to claim 3, it is characterized in that, described detection of electrical leakage unit (U6) is provided with operational amplifier, the signal of detection of electrical leakage portion output is amplified respectively and inputs to main control unit (U7) corresponding port, and the circuit of described detection of electrical leakage unit also gathers and voltage regulation filtering processing the induction leakage current of single-phase current source.
6. vehicle-mounted single-phase ac power supply intelligent monitoring unit according to claim 5, is characterized in that, also comprises voltage display unit, current displaing unit and ground state display unit on described main control unit (U7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320633252.9U CN203589679U (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase AC power supply intelligent monitoring unit |
| CN201310479452.8A CN103532087B (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase ac power supply intelligent monitoring unit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320633252.9U CN203589679U (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase AC power supply intelligent monitoring unit |
| CN201310479452.8A CN103532087B (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase ac power supply intelligent monitoring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203589679U true CN203589679U (en) | 2014-05-07 |
Family
ID=72380423
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310479452.8A Active CN103532087B (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase ac power supply intelligent monitoring unit |
| CN201320633252.9U Withdrawn - After Issue CN203589679U (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase AC power supply intelligent monitoring unit |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310479452.8A Active CN103532087B (en) | 2013-10-14 | 2013-10-14 | Vehicle-mounted single-phase ac power supply intelligent monitoring unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103532087B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532087A (en) * | 2013-10-14 | 2014-01-22 | 北京航天发射技术研究所 | Intelligent monitoring unit for vehicle-mounted single-phase alternating-current power supply |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300502B (en) * | 2014-09-26 | 2018-03-09 | 哈尔滨威帝电子股份有限公司 | A kind of belt current detection and the intelligent vehicle-carried power device of short-circuit protection function |
| CN106740188A (en) * | 2016-12-05 | 2017-05-31 | 北京智充科技有限公司 | The electric vehicle charging device and its application method of a kind of detectable circuit safety |
| CN110208594A (en) * | 2019-07-08 | 2019-09-06 | 成都通用整流电器研究所 | A kind of protector circuit protection detection system |
| CN112566325B (en) * | 2020-12-25 | 2023-06-13 | 杭州辰汉智能科技有限公司 | Vehicle light regulation and control method |
| CN112798981A (en) * | 2020-12-29 | 2021-05-14 | 江苏航天大为科技股份有限公司 | Road traffic system with alternating current monitoring and protecting functions |
| CN113740595B (en) * | 2021-11-04 | 2022-01-04 | 四川力士达智慧照明科技有限公司 | Single-phase alternating current voltage detection protection circuit based on mutual inductor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2217853Y (en) * | 1994-10-08 | 1996-01-17 | 王晓进 | Intelligent monitoring stablizing protector for ac. electric power supply |
| CN2408466Y (en) * | 1999-09-17 | 2000-11-29 | 杨学昌 | Earthing condition monitor |
| CN100576673C (en) * | 2007-08-24 | 2009-12-30 | 韩俊 | The control method of Electrical Safety protection switch |
| KR100906966B1 (en) * | 2008-11-19 | 2009-07-08 | 주식회사 두리계전 | When intercept electric leakage, device and power distributor having earth leakage current analysis function |
| CN202309541U (en) * | 2011-11-01 | 2012-07-04 | 西安曼海特工业技术有限公司 | Alternating current regulated power supply possessing wide voltage input scope and lightning stroke and surge prevention function |
| CN103532087B (en) * | 2013-10-14 | 2016-08-17 | 北京航天发射技术研究所 | Vehicle-mounted single-phase ac power supply intelligent monitoring unit |
-
2013
- 2013-10-14 CN CN201310479452.8A patent/CN103532087B/en active Active
- 2013-10-14 CN CN201320633252.9U patent/CN203589679U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532087A (en) * | 2013-10-14 | 2014-01-22 | 北京航天发射技术研究所 | Intelligent monitoring unit for vehicle-mounted single-phase alternating-current power supply |
| CN103532087B (en) * | 2013-10-14 | 2016-08-17 | 北京航天发射技术研究所 | Vehicle-mounted single-phase ac power supply intelligent monitoring unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103532087A (en) | 2014-01-22 |
| CN103532087B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203589679U (en) | Vehicle-mounted single-phase AC power supply intelligent monitoring unit | |
| CN103487707B (en) | Vehicle-mounted three-phase alternating-current powered intelligent monitoring unit | |
| CN103022965A (en) | Monitoring circuit of 12V voltage in electric vehicle electric drive controller | |
| CN104184124A (en) | Direct current breaker for high-frequency switch power supply system and overload protection method | |
| CN103516052A (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN207354054U (en) | The electric power system of online power equipment monitoring system | |
| CN102709901A (en) | Overvoltage protection method and device of current transformer | |
| CN102914725A (en) | Medium-voltage power distribution network fault monitoring device | |
| CN202710702U (en) | Medium-voltage distribution network fault monitoring device | |
| CN103378581A (en) | AFCI comprehensive protecting device | |
| CN202678082U (en) | Electronic transformer collector with overcurrent and overvoltage prevention function | |
| CN201378730Y (en) | Power circuit breaker protective circuit | |
| CN106058650A (en) | Vehicle-mounted centralized-control intelligent power distribution device | |
| CN203205830U (en) | Resettable overvoltage and under-voltage protector with leakage protection function | |
| CN201838536U (en) | Self-power supply type digital relay | |
| CN111007310B (en) | Intelligent Internet of things chip and current detection circuit thereof | |
| CN213749953U (en) | Low-voltage loop monitoring terminal and monitoring system | |
| CN202939263U (en) | Fault indicator for 6-132 kV power transmission and distribution network | |
| CN202770951U (en) | Remote signal acquisition circuit with direct current grounding automatic line selection function | |
| CN203562840U (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN205882405U (en) | On -vehicle centralized control formula intelligent power distribution device | |
| CN201726118U (en) | Harmonic protection device for capacitor | |
| CN219980426U (en) | DC protection power supply system | |
| CN205429867U (en) | Dual -power switch power monitoring circuit and dual -power switch controller | |
| CN203151068U (en) | Three-phase protection relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |