CN102436713A - Novel electrical fire monitor - Google Patents
Novel electrical fire monitor Download PDFInfo
- Publication number
- CN102436713A CN102436713A CN2011102900097A CN201110290009A CN102436713A CN 102436713 A CN102436713 A CN 102436713A CN 2011102900097 A CN2011102900097 A CN 2011102900097A CN 201110290009 A CN201110290009 A CN 201110290009A CN 102436713 A CN102436713 A CN 102436713A
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- circuit
- current signal
- signal
- electrical fire
- fire monitor
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Abstract
The invention relates to a novel electrical fire monitor. The novel electrical fire monitor comprises an after-current signal acquiring circuit and a singlechip control circuit; the after-current signal acquiring circuit acquires a after-current signal by using an amorphous zero-sequence mutual inductor, and the output signal of the after-current signal acquiring circuit is sent to the singlechip control circuit sequentially through a signal amplification rectification circuit and an A/D (analogue-to-digital) data conversion circuit; the singlechip control circuit controls an output connection outage driving circuit and a wireless transmitting circuit, the output signal of the wireless transmitting circuit is sent to a wireless receiving circuit; the monitor uses the amorphous zero-sequence mutual inductor to acquire the after-current signal which is sent to a microprocessor circuit after being subjected to the data conversion, after the after-current signal is recognized and judged by an internal program, a control signal is sent out, and alarming information is sent through the wireless transceiving module circuit. The novel monitor provided by the invention can be used for solving the problems of hard wiring and high cost, and achieving the aim of remote real-time monitoring.
Description
Technical field
The present invention relates to a kind of watch-dog, particularly be a kind of novel electrical fire monitor.
Background technology
Residual current is commonly called as leakage current; Use in the middle of main application isolating switch or the earth leakage protective device protection equipment; But traditional holding circuit has only the residual current of detection and control function, or is sent to main frame through wired mode RS485 communication, needs a large amount of wirings could realize the data warning function; Can not satisfy transformation project, the technical requirement of distribution system.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of novel electrical fire monitor is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of novel electrical fire monitor; Comprise residual current signal acquisition circuit and single chip machine controlling circuit; Said residual current signal acquisition circuit adopts the amorphous ZCT to gather the residual current signal; Signal amplifies rectification circuit to its output signal successively, the A/D data converting circuit sends to single chip machine controlling circuit; Connect outage driving circuit and radio transmitter by single chip machine controlling circuit control output, the output signal of radio transmitter sends to wireless receiving circuit.
Said signal amplifies rectification circuit and adopts the AD623 operational amplifier.
Said radio transmitter mainly is made up of triode and FDD-5 transmitter module.
Said wireless receiving circuit mainly is made up of light emitting diode, the loudspeaker that JDD-5 receiver module and output terminal thereof connect.
Through adopting above-mentioned technical scheme, the invention has the beneficial effects as follows: the present invention adopts the amorphous ZCT to gather the residual current signal, after data-switching; Be sent to microcontroller circuit; After internal processes identification is judged, send control signal, and send warning message through wireless transmit, receiver module circuit; Solve the problem that the face wiring is difficult, cost is high, reached the purpose of remote real-time monitoring.
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; Novel electrical fire monitor of the present invention; Comprise residual current signal acquisition circuit 1 and single chip machine controlling circuit 2; Said residual current signal acquisition circuit 1 adopts the amorphous ZCT to gather the residual current signal; Signal amplifies rectification circuit 11 to its output signal successively, A/D data converting circuit 12 sends to single chip machine controlling circuit 2, connects outage driving circuit 3 and radio transmitter 4 by single chip machine controlling circuit 2 control outputs, and the output signal of radio transmitter 4 sends to wireless receiving circuit 5.
This watch-dog adopts the amorphous ZCT to gather the residual current signal, and phase line and zero line should pass zero sequence current mutual inductor simultaneously, gathers the residual current signal; When phase line had earth fault, LN magnetic flux and no longer wait zero produced small induced voltage signal; This voltage signal is through amplifying, be input to the single-chip processor i/o mouth; When a certain phase line occurs electric leakage above setting value,, send alarm failure information to wireless receiving module through wireless transmitter module through the microprocessor logic data processing.
As shown in Figure 2, by amorphous ZCT LN, diode D1, diode D2, resistance R 2, etc. element form the residual current signal acquisition circuit, when phase line has the earth leakage fault; Amorphous ZCT LN magnetic flux and no longer wait zero produces small induced voltage signal, and this signal is through resistance R 1 current limliting; Resistance R 2 dividing potential drops, adjustment resistance R 2 can change signal input current size, through diode D1, D2 amplitude limit; Be input to the 3rd pin of AD623 operational amplifier IC5, after the inner amplification of AD623 operational amplifier IC5, change resistance R 3 scalable enlargement factors; The 6th pin output signal by AD623 operational amplifier IC5 is rectified into d. c. voltage signal through diode D3, and through resistance R 4 current limlitings, resistance R 5 dividing potential drops, diode C2 filtering, the output linear voltage is input to input end the 2nd pin of A/D conversion chip IC3 again; After A/D conversion, signal is input to single-chip microcomputer IC1 the 36th, 37,38 pin, read the data of A/D conversion chip IC3 through single-chip microcomputer IC1 after, handle by single-chip microcomputer IC1 internal processes and to judge when surpassing the electric leakage setting value; Send control signal, by the 4th pin output high level signal of single-chip microcomputer IC1, through resistance R 6 current limlitings; Make triode Q1 conducting, relay J 1 adhesive, its contact J1-1 is by transferring normally closed point normal battle to; Promote breaker device dropout outage, guarantee line security.
The 24th pin output high level of another route single-chip microcomputer IC1 through resistance R 7 current limlitings, makes triode Q2 conducting, is input to the 2nd pin of FDD-5 transmitter module IC2, and delivers to its 3rd pin CP modulation signal input end, and the high-frequency signal of emission is modulated.The TX antenna is promptly externally launched modulated frequency electromagnetic waves.
Form wireless receiving circuit by JDD-5 receiver module IC6, loudspeaker Y, resistance R 8 etc.; The 4th pin CPA audio signal output end of JDD-5 receiver module IC6 directly drives common electrical dynamic formula loudspeaker Y sounding; Its 2nd pin data output end output high level makes LED 1 get electroluminescence simultaneously; Expression receives the alerting signal of extension set, and there is leak current fault in prompting supply line, should in time get rid of.
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 (4)
1. novel electrical fire monitor; Comprise residual current signal acquisition circuit (1) and single chip machine controlling circuit (2); It is characterized in that: said residual current signal acquisition circuit (1) adopts the amorphous ZCT to gather the residual current signal; Signal amplifies rectification circuit (11) to its output signal successively, A/D data converting circuit (12) sends to single chip machine controlling circuit (2); Connect outage driving circuit (3) and radio transmitter (4) by single chip machine controlling circuit (2) control output, the output signal of radio transmitter (4) sends to wireless receiving circuit (5).
2. novel electrical fire monitor according to claim 1 is characterized in that: said signal amplifies rectification circuit (11) and adopts the AD623 operational amplifier.
3. novel electrical fire monitor according to claim 1 is characterized in that: said radio transmitter (4) mainly is made up of triode and FDD-5 transmitter module.
4. novel electrical fire monitor according to claim 1 is characterized in that: said wireless receiving circuit (5) mainly is made up of light emitting diode, the loudspeaker that JDD-5 receiver module and output terminal thereof connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102900097A CN102436713A (en) | 2011-09-28 | 2011-09-28 | Novel electrical fire monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102900097A CN102436713A (en) | 2011-09-28 | 2011-09-28 | Novel electrical fire monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102436713A true CN102436713A (en) | 2012-05-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102900097A Pending CN102436713A (en) | 2011-09-28 | 2011-09-28 | Novel electrical fire monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102436713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505395A (en) * | 2020-11-30 | 2021-03-16 | 贵州航天风华实业有限公司 | Alternating voltage and frequency detection system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0102229A1 (en) * | 1982-08-27 | 1984-03-07 | Monicell Limited | Alarm system |
| JP2003217046A (en) * | 2002-01-22 | 2003-07-31 | Matsushita Electric Works Ltd | Fire sensor, fire receiver, and fire alarm system using them |
| CN201853310U (en) * | 2010-09-25 | 2011-06-01 | 傅清河 | Fire alarm detection device |
| CN201946539U (en) * | 2010-11-12 | 2011-08-24 | 黄家兴 | Intelligent circuit breaker signal transceiving device |
| CN202230571U (en) * | 2011-09-28 | 2012-05-23 | 福建俊豪电子有限公司 | Novel electric fire monitor |
-
2011
- 2011-09-28 CN CN2011102900097A patent/CN102436713A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0102229A1 (en) * | 1982-08-27 | 1984-03-07 | Monicell Limited | Alarm system |
| JP2003217046A (en) * | 2002-01-22 | 2003-07-31 | Matsushita Electric Works Ltd | Fire sensor, fire receiver, and fire alarm system using them |
| CN201853310U (en) * | 2010-09-25 | 2011-06-01 | 傅清河 | Fire alarm detection device |
| CN201946539U (en) * | 2010-11-12 | 2011-08-24 | 黄家兴 | Intelligent circuit breaker signal transceiving device |
| CN202230571U (en) * | 2011-09-28 | 2012-05-23 | 福建俊豪电子有限公司 | Novel electric fire monitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505395A (en) * | 2020-11-30 | 2021-03-16 | 贵州航天风华实业有限公司 | Alternating voltage and frequency detection system |
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| 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: 20120502 |