CN202210231U - Direct current power supply monitoring system - Google Patents

Direct current power supply monitoring system Download PDF

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Publication number
CN202210231U
CN202210231U CN2011202950532U CN201120295053U CN202210231U CN 202210231 U CN202210231 U CN 202210231U CN 2011202950532 U CN2011202950532 U CN 2011202950532U CN 201120295053 U CN201120295053 U CN 201120295053U CN 202210231 U CN202210231 U CN 202210231U
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CN
China
Prior art keywords
detecting unit
unit
main monitoring
direct current
power supply
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Expired - Lifetime
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CN2011202950532U
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Chinese (zh)
Inventor
陈文波
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Nanjing Golden Cooperate Information & Automation Technology Co Ltd
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Nanjing Golden Cooperate Information & Automation Technology Co Ltd
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    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The utility model discloses a direct current power supply monitoring system which comprises a main monitoring unit, an alternating current detecting unit, a direct current detecting unit, a switch value detecting unit, a battery scanning unit, an insulation detecting unit and an upper computer; wherein an AVR (automatic voltage regulation) singlechip is adopted as a core by the main monitoring unit; the main monitoring unit includes a direct current power supply and an alternating current power supply; and the main monitoring unit is connected with the alternating current detecting unit, the direct current detecting unit, the switch value detecting unit, the battery scanning unit, the insulation detecting unit and the upper computer. The direct current power supply monitoring system has high reliability and excellent technical index and easily achieves centralized control.

Description

The direct supply supervisory system
Technical field
The utility model relates to a kind of direct supply supervisory system, is specifically related to a kind of direct supply supervisory system based on the AVR single-chip microcomputer.
Background technology
Along with society constantly advances; Power consumption is increasingly high; Requirement to electric system is also increasingly high; Like reliability, stability, the extensibility of system and the tightness that battery charging and discharging is managed is the problem that we are concerned about the most; Generating plant, transformer station (institute) etc. supply distribution department usually with the uninterrupted power source of accumulator direct current supply as devices such as control, signal, protection, emergency lighting, direct current oil pump, divide-shut brakes, and whether continuous-current plant reliably directly has influence on the safe operation of power supply-distribution system, and the function power then influences the optimum operation of system and the serviceable life of accumulator.At present; Domestic electric power operation direct supply supervisory system mainly contains two kinds of citation forms: one of which is PLC+ touch-screen+sample circuit; But the supervisory system of this kind form is because the limitation of PLC programming language is relatively poor with host computer communication protocol adaptability, and the sampling display precision is low; It two is to be made up of single-chip microcomputer and peripheral circuit thereof; The but current electric power operation direct supply supervisory system of microcomputer development of utilizing adopts dispersed texture more; Being about to supervisory system is divided into different units and assembles installation respectively; Then with the host CPU communication, this monitor mode needs plurality purpose CPU, and communication program is complicated, Electro Magnetic Compatibility is poor, rate of false alarm is high, group screen is complicated.
Summary of the invention
The purpose of the utility model is in order to solve defective of the prior art, provides that a kind of reliability is high, technical indicator is superior, be easy to realize central controlled direct supply supervisory system.
In order to achieve the above object, the utility model provides a kind of direct supply supervisory system, comprises main monitoring unit, interchange detecting unit, direct current detecting unit, switching value detecting unit, battery routing inspection unit, insulation detecting unit and host computer; It is core that said main monitoring unit adopts the AVR single-chip microcomputer; The power supply of said main monitoring unit comprises two kinds of AC and DCs; Said main monitoring unit respectively with exchange detecting unit, direct current detecting unit, switching value detecting unit, battery routing inspection unit, insulation detecting unit and upper machine communication and link to each other.
Further improvement to the utility model is: above-mentioned main monitoring unit is connected by communication through RS485 bus and switching value detecting unit, battery routing inspection unit and insulation detecting unit respectively, links to each other with upper machine communication through RS232 bus or RS485 bus.The power supply of main control unit is a Switching Power Supply.
Wherein, the direct current detecting unit comprises CPU, storer, alternating current-direct current analog quantity A/D Acquisition Circuit, digital quantity light-coupled isolation Acquisition Circuit, relay switching variable output control circuit, analog quantity output control circuit and communication interface; Said direct current detecting unit is connected by communication through communication interface and main monitoring unit.The direct supply supervisory system also comprises touch-screen, and touch-screen is connected by communication through RS232 bus and main monitoring unit.
And above-mentioned switching value detecting unit, battery routing inspection unit can be through external flexible expansion, and the switching value detecting unit can be expanded 2 unit at most and detect 60 road input switch amounts, and the battery routing inspection unit can be patrolled and examined the electric battery of 4 group of 168 batteries at most; But with the external charging module of this main monitoring unit also flexible expansion, 32 of the maximum may command of charging module.
The utility model is compared prior art and had the following advantages: adopt high-performance AVR single-chip microcomputer, the concentrating structure mode occupies little space, is easy to group screen, and electric property and anti-electromagnetic interference performance are superior; The utility model direct supply supervisory system is when operation; Main collection and the processing of accomplishing data; When data exception, can in time provide warning information, and make control corresponding, arrive backstage (like power automatic system) through the teletransmission of RS232/RS485 bus simultaneously; And accept the control command sent on the backstage--the manual various operational orders of input, as set alert limit, control module switching on and shutting down, manually all floating charge is changed; Adopt touch-screen can realize the demonstration and the parameter setting of all data.
Description of drawings
Fig. 1 is the structured flowchart of the utility model direct supply supervisory system.
Fig. 2 is the main program flow chart of the utility model direct supply supervisory system.
Fig. 3 is the circuit diagram of direct current detecting unit among Fig. 1.
Fig. 4 is the circuit diagram that exchanges detecting unit among Fig. 1.
Fig. 5 is the output circuit figure of switching value detecting unit among Fig. 1.
Fig. 6 is the input circuit figure of switching value detecting unit among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the utility model direct supply supervisory system is elaborated.
As shown in Figure 1, the utility model direct supply supervisory system comprises main monitoring unit, interchange detecting unit, direct current detecting unit, switching value detecting unit, battery routing inspection unit, insulation detecting unit, touch-screen and host computer.The power supply of main monitoring unit comprises two kinds of AC and DCs, and these two kinds of power supplys all adopt Switching Power Supply.
Wherein main monitoring unit employing AVR single-chip microcomputer is a core; System comprises four road communication interfaces; The RS232 bus of leading up to is used for main monitoring unit and man-machine interface communication (RS232 communication interface); The RS485 bus of leading up to is used for the communication (RS485 interface) between main monitoring unit and each component units of internal system (battery routing inspection unit, insulation detecting unit, switching value detecting unit); The RS232 bus of leading up to is used for the communication (RS232 interface) of main monitoring unit and touch-screen; Another road is used for the communication between main monitoring unit and the outer monitoring-host computer through RS485 or RS232 bus, and supports communication protocols such as MK, CDT, MODBUS-RTU.
Master routine workflow such as Fig. 2 of main supervisory system; At first be one-chip machine port initialization, initialization of variable, timer initialization, AD converter initialization, serial ports initialization, the initialization of DS12887 clock chip, TL16C552 initialization; Judge then whether equal float charge voltage is lower than 85% of regulation; If convert charge mode into, if not continuing floating charge.Next step arrive while () function circulate carry out call EEPROM inspection function, call AD () function, call send command functions, whether equipment starts, call switching value input renewal function, invocation pattern renewal function, call relay renewal function, internal communication function, touch-screen communication function, external communication function as starting to carry out to call the alarm detection function otherwise carry out.
In conjunction with Fig. 3 and Fig. 4, the direct current detecting unit is gathered two parts composition by data acquisition with measuring with the alternating current-direct current analog quantity A/D Acquisition Circuit in exchanging detecting unit.Wherein, Part of data acquisition is high 10 accuracy A/D converter of reliability; The A/D conversion chip inside of state-of-the-art technology has comprised sampling and has kept and synchronizing circuit, has that slewing rate is fast, sampling deviation is little, characteristics such as extra small power consumption and good stability, and sampling circuit does not have adjustable element; Do not need again the scene to adjust, possess the reliability of height.
In conjunction with Fig. 5 and Fig. 6, the switching value detecting unit is provided with the switching value of 8 tunnel inputs, provides special-purpose 5V power supply that incoming level is provided; Output provides 12V power supply, and its repeat circuit 1 and 2 adopts antilogical, realizes the dual power supply handoff functionality, and relay 3 is the integrated alarm indication for discharge sign indication, relay 8.
The insulation detecting unit is available from Shenzhen Rui Hongda, and the battery routing inspection unit is a Nanjing state minister " GC-DCXJ ".
The current supply circuit of the power supply of main monitoring unit adopts switch power module; External AC and DC power supply in the 85-265V wide region; To satisfy the requirement of different use occasions; And keep it stable through FEEDBACK CONTROL, and provide for the intelligent control unit of back+12V is electric first with two-way+5V work.
The utility model direct supply supervisory system can detect following signal:
1, two-way alternating voltage (comprising that three-phase 380V master goes into power supply and three-phase 380V is equipped with into power supply) detects through exchanging detecting unit, can switch automatically; And can be to under-voltage, overvoltage and phase shortage are sent warning; Concrete principle of work such as Fig. 4, at first three inputs obtain the output voltage such as the UA-UB=UAB of difference ratio through difference ratio amplifier; UAB carries out AC-DC through the precise rectification circuit of rear end, and the follower of doing through an amplifier then outputs to the AD conversion input port of single-chip microcomputer.Result through AD conversion and the under-voltage magnitude of voltage that is stored in inside in advance and over voltage alarm value and phase shortage compare, and whether judge output alarm information then.
2, two-way DC voltage (comprising cell voltage and controlling voltage) detects through the direct current detecting unit, can send warning with overvoltage to under-voltage, can detect two-way DC current (charging current and control mother current) simultaneously; Concrete principle of work such as Fig. 3, this is a difference ratio discharge circuit, ratio A=(R50+R51+R52)/R58; Ratio output back is in the AD input port that outputs to single-chip microcomputer through an amplifier follower.Result through AD conversion compares with the under-voltage magnitude of voltage and the over voltage alarm value that are stored in inside in advance, whether judges output alarm information then!
3,8 way switch amounts input is used for input or feeds out on off state detecting; Concrete principle of work such as Fig. 6 (being merely 1 tunnel in 8 tunnel) come pilot relay output to signal to OUT through single-chip microcomputer, make often to open the normally closed COM of being of change and be connected from being connected with NC to change into NO.
4, No. 8 relays output is used for system's control and reports to the police defeated; Concrete principle of work such as Fig. 5 (being merely 1 tunnel in 8 tunnel) control optocoupler conducting to high level to IN4 through single-chip microcomputer, and promptly VCC is conducting to I4.
5,1 road temperature signal (precision: 0.1 ℃, be used for the automatic temperature-adjusting adjustment of charging voltage), the optional electric battery temperature detection that adds is used for the high warning of battery pack temperature in addition.
When module had fault, system sent alerting signal, and divided equally the charging module load again; Can this locality or the machine open/close of far-end control rectification module, control the equal floating charge conversion of battery charge automatically; Can this locality or far-end the output voltage of rectification module is set continuously; Through voltage, the electric current of direct current detecting unit with each DC feedback output of insulation detecting unit monitoring, each feed output on off state, state of insulation send warning when abnormal conditions take place respectively; Monitoring cell voltage and charging and discharging currents; When civil power interrupts being kept when powering to the load by accumulator, if cell voltage is reduced to the low pressure warning value, system sends warning; Supervisory system can be carried out the automatic equalization Charge Management to battery behind the city power recovery.

Claims (6)

1. a direct supply supervisory system is characterized in that: comprise main monitoring unit, interchange detecting unit, direct current detecting unit, switching value detecting unit, insulation detecting unit, battery routing inspection unit and host computer; Said interchange detecting unit, direct current detecting unit, switching value detecting unit, battery routing inspection unit, insulation detecting unit and host computer link to each other with main monitoring unit respectively.
2. direct supply supervisory system according to claim 1 is characterized in that: it is core that said main monitoring unit adopts the AVR single-chip microcomputer.
3. direct supply supervisory system according to claim 1 is characterized in that: said main monitoring unit is connected by communication through RS485 bus and switching value detecting unit, battery routing inspection unit and insulation detecting unit respectively; Said main monitoring unit links to each other with upper machine communication through RS232 bus or RS485 bus.
4. direct supply supervisory system according to claim 1 is characterized in that: the power supply of said main monitoring unit comprises two kinds of AC and DCs, and two kinds are all adopted Switching Power Supply.
5. direct supply supervisory system according to claim 1 is characterized in that: said direct current detecting unit comprises CPU, storer, alternating current-direct current analog quantity A/D Acquisition Circuit, digital quantity light-coupled isolation Acquisition Circuit, relay switching variable output control circuit, analog quantity output control circuit and communication interface; Said direct current detecting unit is connected by communication through communication interface and main monitoring unit.
6. direct supply supervisory system according to claim 1 is characterized in that: said direct supply supervisory system also comprises touch-screen; Said touch-screen is connected by communication through RS232 bus and main monitoring unit.
CN2011202950532U 2011-08-15 2011-08-15 Direct current power supply monitoring system Expired - Lifetime CN202210231U (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102931731A (en) * 2012-11-08 2013-02-13 衡水供电公司 Integrated intelligent monitoring system applicable to substation direct-current power supply
CN103812210A (en) * 2014-02-18 2014-05-21 重庆荣凯川仪仪表有限公司 Intelligent monitoring system for alternating current-direct current uninterruptible power supply system
CN103825365A (en) * 2014-03-06 2014-05-28 国家电网公司 State monitoring management platform of direct current equipment of transformer substation based on real-time historical database
CN103869262A (en) * 2014-03-24 2014-06-18 上海航天电子通讯设备研究所 Measurement device of launch vehicle secondary electric power supply
CN104238470A (en) * 2013-06-14 2014-12-24 中国长城计算机深圳股份有限公司 Power source monitoring circuit and power source monitoring device
CN105912956A (en) * 2016-04-05 2016-08-31 山东超越数控电子有限公司 Control circuit and shutdown control method
CN110618392A (en) * 2019-09-14 2019-12-27 无锡江南计算技术研究所 Fault site latching method and system for DC/DC power supply unit
CN110661333A (en) * 2019-10-24 2020-01-07 中国海洋大学 Direct-current power supply system and monitoring method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102931731A (en) * 2012-11-08 2013-02-13 衡水供电公司 Integrated intelligent monitoring system applicable to substation direct-current power supply
CN102931731B (en) * 2012-11-08 2015-09-23 衡水供电公司 Be applicable to the comprehensive intelligent supervisory control system of transforming plant DC power supply
CN104238470B (en) * 2013-06-14 2017-05-24 中国长城计算机深圳股份有限公司 Power source monitoring circuit and power source monitoring device
CN104238470A (en) * 2013-06-14 2014-12-24 中国长城计算机深圳股份有限公司 Power source monitoring circuit and power source monitoring device
CN103812210A (en) * 2014-02-18 2014-05-21 重庆荣凯川仪仪表有限公司 Intelligent monitoring system for alternating current-direct current uninterruptible power supply system
CN103825365A (en) * 2014-03-06 2014-05-28 国家电网公司 State monitoring management platform of direct current equipment of transformer substation based on real-time historical database
CN103869262A (en) * 2014-03-24 2014-06-18 上海航天电子通讯设备研究所 Measurement device of launch vehicle secondary electric power supply
CN105912956A (en) * 2016-04-05 2016-08-31 山东超越数控电子有限公司 Control circuit and shutdown control method
CN105912956B (en) * 2016-04-05 2018-09-04 山东超越数控电子有限公司 A kind of control circuit and shutdown control method
CN110618392A (en) * 2019-09-14 2019-12-27 无锡江南计算技术研究所 Fault site latching method and system for DC/DC power supply unit
CN110661333A (en) * 2019-10-24 2020-01-07 中国海洋大学 Direct-current power supply system and monitoring method thereof

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Granted publication date: 20120502

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