CN102360038A - Multi-loop current type detection module - Google Patents
Multi-loop current type detection module Download PDFInfo
- Publication number
- CN102360038A CN102360038A CN2011102746732A CN201110274673A CN102360038A CN 102360038 A CN102360038 A CN 102360038A CN 2011102746732 A CN2011102746732 A CN 2011102746732A CN 201110274673 A CN201110274673 A CN 201110274673A CN 102360038 A CN102360038 A CN 102360038A
- Authority
- CN
- China
- Prior art keywords
- circuit
- detection module
- signal
- mode detection
- multiloop
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to a multi-loop current type detection module, which comprises a three-phase current transformer signal collection circuit and a singlechip control circuit, wherein output signals of the multi-loop three-phase current transformer signal collection circuit are transmitted to the singlechip control circuit sequentially through an operation amplification rectifying regulation circuit, an analog switch circuit and an analog-to-digital (A/D) data conversion circuit and are controlled by the singlechip control circuit to be output to an RS485 communication interface circuit and a carrier signal lock phase circuit, and the output signals of the carrier signal lock phase circuit are sent to a carrier signal decoding circuit through a frequency selecting amplifier circuit. The multi-loop current type detection module adopts the multi-loop circulation detection, warning signals are sent to a host machine through carrier signals or an RS485 bus through the integral judgment of a singlechip, and the warning is effectively carried out in time in the first time.
Description
Technical field
The present invention relates to a kind of detection module, particularly be a kind of multiloop current mode detection module.
Background technology
The electrical fire major part is worn out by the long-time use of circuit or excess current causes, but traditional isolating switch product can only be gathered three-phase current signal separately, can not satisfy the many practical challenges in distribution system loop.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of multiloop current mode detection module is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of multiloop current mode detection module; Comprise threephase current transformer signal acquisition circuit and single chip machine controlling circuit; The output signal of the threephase current transformer signal acquisition circuit of multichannel transfers to single chip machine controlling circuit through amplifier rectification adjustment circuit, analog switching circuit, A/D data converting circuit successively; Export RS485 communication interface circuit, carrier signal phase lock circuitry to by single chip machine controlling circuit control, the output signal of said carrier signal phase lock circuitry sends to the carrier signal decoding scheme through the frequency-selecting amplifier circuit.
Said single chip machine controlling circuit and watchdog circuit bidirectional data transfers.
Said threephase current transformer signal acquisition circuit is gathered current signal through the amorphous ZCT.
Said amplifier rectification adjustment circuit is mainly by half-wave rectifying circuit, and current limliting bleeder circuit, filter integral circuit constitute.
Said RS485 communication interface circuit transmits warning message through system bus to the fire protection control center PC through SN75176 signal transmitting and receiving chip.
Through adopting above-mentioned technical scheme, the invention has the beneficial effects as follows: the present invention adopts the multiloop cycle detection, after the comprehensive judgement of single-chip microcomputer, sends alerting signal through carrier signal or RS485 bus to main frame, and the timely and effective very first time reports to the police.
Description of drawings
Fig. 1 is a frame assumption diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1; Multiloop current mode detection module of the present invention; Comprise threephase current transformer signal acquisition circuit 1 and single chip machine controlling circuit 2; The output signal of the threephase current transformer signal acquisition circuit 1 of multichannel transfers to single chip machine controlling circuit 2 through amplifier rectification adjustment circuit 11, analog switching circuit 12, A/D data converting circuit 13 successively; Export RS485 communication interface circuit 3, carrier signal phase lock circuitry 5 to by single chip machine controlling circuit 2 controls, the output signal of said carrier signal phase lock circuitry 5 sends to carrier signal decoding scheme 7 through frequency-selecting amplifier circuit 6, said single chip machine controlling circuit 2 and watchdog circuit 8 bidirectional data transfers.
This module adopts the amorphous current transformer to gather current signal, when phase line is passed current transformer, gathers current signal; The electric current that is passed through is big more, and the alternating voltage of induction is big more thereupon, and this voltage signal is after the rectification adjustment; Be sent to analog switch, carry out the shunt cycle detection, handle through the single-chip microcomputer logical data; Show current current value in real time; When a certain phase line surpasses the setting current value, send the sound and light alarm signal, export fire protection control center to through RS485 system bus signal or carrier signal.
As shown in Figure 2; When the L1 phase current mutual inductor is sensed ac voltage signal when excessive, the secondary of current transformer L1 can produce voltage signal, and this signal is the half-wave rectifying circuit through being made up of resistance R 1, capacitor C 7, capacitor C 8, capacitor C 9, diode D7 earlier; Again through resistance R 2 current limlitings; Resistance R 1 dividing potential drop, diode D7 rectification is to capacitor C 8 chargings; Filter integral circuit output linear voltage through being made up of resistance R 14, capacitor C 10, capacitor C 11 is imported analog switch chip U5 the 13rd pin after diode ZW1 pressure limiting at last.This moment, the 13rd pin of analog switch chip U5 was a high level; Its 3rd pin output terminal is output as high level; Input end the 2nd pin of input A/D conversion chip U4; After the inner A/D data-switching of A/D conversion chip U4; The 1st, 37,39 pin and A/D conversion chip U4 the 5th, 6,7 pin by single-chip microcomputer U1 are formed datel circuit; Through single-chip microcomputer U1 comprehensive judge detect signal after the U4 data-switching, surpass single-chip microcomputer U1 inner setting value, and when being judged as supply line's excess current; This moment, single-chip microcomputer U1 sent control signal, and communication interface the 1st, 2,3,4 pin of being exported the 1st pin, the 2nd pin, the 3rd pin and the SN75176 signal transmitting and receiving chip U7 that are connected respectively to control chip U2 by the 10th pin, the 11st pin, the 25th pin serial data of single-chip microcomputer U1 transmit warning message through system bus to the fire protection control center PC with L1 overcurrent signal mutually.
The multivibrator that another route LM567 tone decoder IC1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof constitute is formed phase lock circuitry; Its oscillation frequency is by the parameter determining of electric capacity 2C1, resistance 2R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 1C2, capacitor 2C3 by triode Q1, audio-frequency transformer (AFT) T constitute the frequency-selecting amplifier circuit; The 4th pin output high level signal by single-chip microcomputer U1; Make LM567 tone decoder IC1 obtain working power; LM567 tone decoder IC1 starts working, and is coupled on local telephone network speaking wire or the AC network AC220V power lead and is sent by secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T, sends data-signal to the carrier wave main frame.Said carrier signal decoding scheme; Audio-frequency transformer (AFT) T1, LM567 ATD IC2, triode Q2, LED by connecting successively constitute; The time constant of resistance 4R1, capacitor C 5 networks has determined the voltage controlled oscillator of LM567 ATD IC2; When the carrier wave extension set when main frame sends 150-300KHZ carrier wave command signal; Be coupled to the secondary L3 of audio-frequency transformer (AFT) T through capacitor C 1, audio-frequency transformer (AFT) T1, its secondary L3, capacitor C 2, capacitor C 3 are formed a carrier wave frequency selection network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD IC2 through capacitor C 4; After LM567 ATD IC2 decoding,, make triode Q2 conducting by its 8th pin output terminal output low level; LED is lighted; Received the carrier data signal of extension set, explained that electric fault has appearred in power supply commonly used, reaches real time and on line monitoring.
The current transformer principle of other phase is identical with the principle of L1 phase current mutual inductor, just no longer repeats here.
Above-describedly be merely a preferred embodiment of the present invention, can not limit the scope that this practicality is implemented, every equalization of doing according to claim of the present invention changes and decorates, and all should still belong to the scope that the present invention is contained.
Claims (5)
1. multiloop current mode detection module; It is characterized in that: comprise threephase current transformer signal acquisition circuit (1) and single chip machine controlling circuit (2); The output signal of the threephase current transformer signal acquisition circuit (1) of multichannel transfers to single chip machine controlling circuit (2) through amplifier rectification adjustment circuit (11), analog switching circuit (12), A/D data converting circuit (13) successively; Export RS485 communication interface circuit (3), carrier signal phase lock circuitry (5) to by single chip machine controlling circuit (2) control, the output signal of said carrier signal phase lock circuitry (5) sends to carrier signal decoding scheme (7) through frequency-selecting amplifier circuit (6).
2. multiloop current mode detection module according to claim 1 is characterized in that: said single chip machine controlling circuit (2) and watchdog circuit (8) bidirectional data transfers.
3. multiloop current mode detection module according to claim 1 is characterized in that: said threephase current transformer signal acquisition circuit (1) is gathered current signal through the amorphous ZCT.
4. multiloop current mode detection module according to claim 1 is characterized in that: said amplifier rectification adjustment circuit (11) is mainly by half-wave rectifying circuit, and current limliting bleeder circuit, filter integral circuit constitute.
5. multiloop current mode detection module according to claim 1 is characterized in that: said RS485 communication interface circuit (3) transmits warning message through system bus to the fire protection control center PC through SN75176 signal transmitting and receiving chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102746732A CN102360038A (en) | 2011-09-16 | 2011-09-16 | Multi-loop current type detection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102746732A CN102360038A (en) | 2011-09-16 | 2011-09-16 | Multi-loop current type detection module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102360038A true CN102360038A (en) | 2012-02-22 |
Family
ID=45585400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102746732A Pending CN102360038A (en) | 2011-09-16 | 2011-09-16 | Multi-loop current type detection module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102360038A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247174A (en) * | 2017-07-24 | 2017-10-13 | 重庆环投生态环境监测网络与工程治理有限公司 | Monitor the circuit of sewage disposal device multichannel operating mode electric current |
| CN111650427A (en) * | 2020-06-11 | 2020-09-11 | 山西潞安环保能源开发股份有限公司五阳煤矿 | Voltage and current sampling device and method for coal mine circuit |
| CN113671246A (en) * | 2021-09-27 | 2021-11-19 | 国网甘肃省电力公司检修公司 | Current detection device |
| CN120048168A (en) * | 2025-04-27 | 2025-05-27 | 成都纺织高等专科学校 | Elevator safety loop detection training system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477172U (en) * | 2009-08-13 | 2010-05-19 | 福建俊豪电子有限公司 | Electric leakage detection circuit system |
| CN201477153U (en) * | 2009-08-13 | 2010-05-19 | 福建俊豪电子有限公司 | Three-phase over-current detection circuit system |
| CN201946539U (en) * | 2010-11-12 | 2011-08-24 | 黄家兴 | Intelligent circuit breaker signal transceiving device |
| CN202230130U (en) * | 2011-09-16 | 2012-05-23 | 福建俊豪电子有限公司 | Multi-loop current type detection module |
-
2011
- 2011-09-16 CN CN2011102746732A patent/CN102360038A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477172U (en) * | 2009-08-13 | 2010-05-19 | 福建俊豪电子有限公司 | Electric leakage detection circuit system |
| CN201477153U (en) * | 2009-08-13 | 2010-05-19 | 福建俊豪电子有限公司 | Three-phase over-current detection circuit system |
| CN201946539U (en) * | 2010-11-12 | 2011-08-24 | 黄家兴 | Intelligent circuit breaker signal transceiving device |
| CN202230130U (en) * | 2011-09-16 | 2012-05-23 | 福建俊豪电子有限公司 | Multi-loop current type detection module |
Non-Patent Citations (1)
| Title |
|---|
| 钟道昌: "利用电话线载波的煤矿多路信号遥测系统", 《煤矿自动化》, no. 1, 31 December 2000 (2000-12-31), pages 20 - 21 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247174A (en) * | 2017-07-24 | 2017-10-13 | 重庆环投生态环境监测网络与工程治理有限公司 | Monitor the circuit of sewage disposal device multichannel operating mode electric current |
| CN111650427A (en) * | 2020-06-11 | 2020-09-11 | 山西潞安环保能源开发股份有限公司五阳煤矿 | Voltage and current sampling device and method for coal mine circuit |
| CN113671246A (en) * | 2021-09-27 | 2021-11-19 | 国网甘肃省电力公司检修公司 | Current detection device |
| CN120048168A (en) * | 2025-04-27 | 2025-05-27 | 成都纺织高等专科学校 | Elevator safety loop detection training system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102393485A (en) | Detection module for multi-loop leakage current | |
| CN107682756B (en) | LoRa-based power distribution terminal communication system | |
| CN102006701A (en) | Intelligent light-emitting diode (LED) power supply based on power line carrier communication (PLCC) | |
| CN102394493A (en) | Electrical signal collection monitoring device | |
| CN206004396U (en) | A kind of intelligent and complementary photovoltaic generating system of off-network | |
| CN104135431B (en) | A kind of energy source gateway for realizing fault electric arc detection | |
| CN201392462Y (en) | An energy-saving switch device | |
| CN102156468B (en) | System for complementary power supply between small power station and commercial power grid | |
| CN202189134U (en) | Power failure monitoring device | |
| CN102360038A (en) | Multi-loop current type detection module | |
| CN205039765U (en) | Intelligent interchange collection flow box | |
| CN202256482U (en) | Multi-loop leakage current detection module | |
| CN202230130U (en) | Multi-loop current type detection module | |
| CN204965088U (en) | Remote monitoring device for transformer | |
| CN201477153U (en) | Three-phase over-current detection circuit system | |
| CN201975769U (en) | Low-voltage power-distribution neutral line monitoring device | |
| CN202084918U (en) | Electric equipment monitoring system | |
| CN206237137U (en) | Reactive compensation system based on automatic network-building technology | |
| CN202171755U (en) | Intelligent storehouse temperature monitoring module | |
| CN202230159U (en) | Fault monitoring device of electric equipment | |
| CN102393510A (en) | Detection system for standing power supply | |
| CN205140192U (en) | Terminal of zooming out that power consumption information acquisition GPRS is wireless based on 10kV induction electricity -taking | |
| CN205484517U (en) | Grid voltage current monitoring system | |
| CN202230572U (en) | Novel alarm module | |
| CN203191500U (en) | Multifunctional electrical monitoring early warning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |