CN202600036U - Overcurrent carrier alarm device - Google Patents
Overcurrent carrier alarm device Download PDFInfo
- Publication number
- CN202600036U CN202600036U CN 201220292521 CN201220292521U CN202600036U CN 202600036 U CN202600036 U CN 202600036U CN 201220292521 CN201220292521 CN 201220292521 CN 201220292521 U CN201220292521 U CN 201220292521U CN 202600036 U CN202600036 U CN 202600036U
- Authority
- CN
- China
- Prior art keywords
- circuit
- overcurrent
- carrier signal
- carrier
- single chip
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an overcurrent carrier alarm device, comprising an overcurrent detection circuit, a single chip control circuit, a drive power-off circuit and a carrier signal phase locking circuit, wherein an output signal of the overcurrent detection circuit is transmitted to the single chip control circuit via a trigger delay circuit, an output signal of the single chip control circuit is controlled to be sent to the drive power-off circuit and the carrier signal phase locking circuit, and an output signal of the carrier signal phase locking circuit is sent to a carrier signal decoding circuit via a frequency-selective amplifier circuit; and when a load is subjected to overcurrent, a load power supply is cut off after a single chip makes judgment, alarm information is sent to a carrier host via a carrier signal transmission circuit, and professionals are in charge of handling faults, thereby avoiding electrical fire caused by the overcurrent, and guaranteeing the life and property safety of people.
Description
Technical field
The utility model relates to a kind of warning device, particularly be a kind of overcurrent carrier wave warning device.
Background technology
Excess current is commonly called as overload and claims overload again; Improving constantly of Along with people's living standard, power consumption increases thereupon, because the building's electrical design of the eighties requires to differ bigger with modern life electricity consumption; Bring the phenomenon of excess current generally to take place for electricity consumption supply line; The scheme that solves has only original supply line of replacing, but because people's consciousness is comparatively weak, causes the electrical fire that causes because of excess current still to happen occasionally.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of overcurrent carrier wave warning device is provided.
The utility model solves the technical scheme that its technical matters adopted: a kind of overcurrent carrier wave warning device; Comprise overcurrent sensing circuit, single chip machine controlling circuit, driving power-down circuit and carrier signal phase lock circuitry; The output signal of said overcurrent sensing circuit transfers to single chip machine controlling circuit through triggering delay circuit; The output signal controlling of said single chip machine controlling circuit is sent to and drives power-down circuit and carrier signal phase lock circuitry, and 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 communication.
Said overcurrent sensing circuit is made up of diode VD2, capacitor C3, resistance R 1, the potentiometer RP that current transformer TA and output terminal thereof connect; Wherein behind the diode VD2 shnt capacitor C3; Parallelly connected with the series circuit of resistance R 1, potentiometer RP again; The winding of said current transformer TA is serially connected in the end of incoming cables of electricity consumption power lead, and its secondary induction current is directly proportional with home-use electric weight.
Said triggering delay circuit adopts 555 monostable circuit IC.
Said carrier signal phase lock circuitry is made up of LM567 tone decoder IC1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.
Said frequency-selecting amplifier circuit is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to the carrier signal decoding scheme through secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T.
Said carrier signal decoding scheme is made up of the audio-frequency transformer (AFT) T1, LM567 ATD IC2, triode VT2 and the LED that connect successively.
Through adopting above-mentioned technical scheme; The beneficial effect of the utility model is: when load over-current, after single-chip microcomputer is judged, cut off load power source, simultaneously through the carrier signal transmission circuit; Send warning message to the carrier wave main frame;, avoid Fault Processing by the professional, ensure people's the security of the lives and property because of excess current causes electrical fire.
Description of drawings
Fig. 1 is the frame assumption diagram of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of overcurrent carrier wave warning device of the utility model; Comprise overcurrent sensing circuit 1, single chip machine controlling circuit 2, drive power-down circuit 21 and carrier signal phase lock circuitry 22; The output signal of said overcurrent sensing circuit 1 transfers to single chip machine controlling circuit 2 through triggering delay circuit 11; The output signal controlling of said single chip machine controlling circuit 2 is sent to and drives power-down circuit 21 and carrier signal phase lock circuitry 22, and the output signal of said carrier signal phase lock circuitry 22 sends to carrier signal decoding scheme 24 through frequency-selecting amplifier circuit 23.
Said single chip machine controlling circuit 2 and watchdog circuit 25 bidirectional data communications.
Said overcurrent sensing circuit 1 is made up of diode VD2, capacitor C3, resistance R 1, the potentiometer RP that current transformer TA and output terminal thereof connect; Wherein behind the diode VD2 shnt capacitor C3; Parallelly connected with the series circuit of resistance R 1, potentiometer RP again; The winding of said current transformer TA is serially connected in the end of incoming cables of electricity consumption power lead, and its secondary induction current is directly proportional with home-use electric weight.Said triggering delay circuit 11 adopts 555 monostable circuit IC, and the output terminal of potentiometer RP is connected to the 2nd pin of 555 monostable circuit IC successively through stabilivolt VS2, transistor VT.
Under the situation of not overload electricity consumption, because electric current in allowed limits, the sampling voltage of the secondary side of current transformer TA output is lower; The dividing potential drop deficiency that obtains through potentiometer RP is so that stabilivolt VS2 punctures, and transistor VT is in cut-off state, is electronegative potential output; This signal is input to the 22nd pin I/O end of single-chip microcomputer U1, after single-chip microcomputer U1 internal processor is judged through resistance R 5 current limlitings; Do not send control signal
When power load surpassed setting value, through the voltage rising of current transformer TA sampling, at this moment stabilivolt VS2 punctured; Transistor VT conducting, the collector output low level of transistor VT make the monostable circuit upset, the 3rd pin output high level of 555 monostable circuit IC; Be input to single-chip microcomputer U1 the 22nd pin I/O end and also be high level state, after single-chip microcomputer U1 internal processor is judged, send control signal; Divide two-way output, first via output constitutes carrier signal phase lock circuitry 22 by LM567 tone decoder IC1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof; Its oscillation frequency is by the parameter determining of electric capacity 2C1, resistance 2R1; Carrier frequency is adjusted in the 150-300KHZ scope, and said frequency-selecting amplifier circuit 23 is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, by single-chip microcomputer IC1 the 28th pin output high level signal; Make LM567 tone decoder IC1 obtain working power; LM567 tone decoder IC1 starts working, and is coupled on the AC network AC220V power lead and is sent by secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T, sends alerting signals to carrier signal decoding scheme 24.
Said carrier signal decoding scheme 24 is made up of the audio-frequency transformer (AFT) T1, LM567 ATD IC2, triode VT2 and the LED that connect successively; Carrier receiver is installed on sub-district property duty room, and the time constant of resistance 1R1, electric capacity 1C5 network 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 L3 of T1 level of audio-frequency transformer (AFT) through LM567 tone decoder 1C1, audio-frequency transformer (AFT) T1; L3, electric capacity 1C2,1C3 form a carrier wave frequency selection network, and the signal after the frequency-selecting is deciphered through LM567 ATD IC2 through the 3rd pin signal input part that electric capacity 1C4 is coupled to LM567 ATD IC2; By its 8th pin output terminal output low level; Make triode VT2 conducting, LED is lighted, and the carrier wave overcurrent fault alerting signal of receiving extension set is described; Notifying cell specialty electrician operator on duty reaches the spot and handles; The second tunnel output is by the 7th pin output high level signal of single-chip microcomputer U1, through resistance R 7 current limlitings; Make triode Q1 conducting, promote the relay J adhesive, its contact J-1 transfers normally closed point to by often opening; Cut off load power source, protection supply line safety, thus ensure people's security of the lives and property.
An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (7)
1. overcurrent carrier wave warning device; It is characterized in that: comprise overcurrent sensing circuit (1), single chip machine controlling circuit (2), drive power-down circuit (21) and carrier signal phase lock circuitry (22); The output signal of said overcurrent sensing circuit (1) transfers to single chip machine controlling circuit (2) through triggering delay circuit (11); The output signal controlling of said single chip machine controlling circuit (2) is sent to and drives power-down circuit (21) and carrier signal phase lock circuitry (22), and the output signal of said carrier signal phase lock circuitry (22) sends to carrier signal decoding scheme (24) through frequency-selecting amplifier circuit (23).
2. overcurrent carrier wave warning device according to claim 1 is characterized in that: said single chip machine controlling circuit (2) and watchdog circuit (25) bidirectional data communication.
3. overcurrent carrier wave warning device according to claim 1; It is characterized in that: said overcurrent sensing circuit (1) is made up of diode VD2, capacitor C3, resistance R 1, the potentiometer RP that current transformer TA and output terminal thereof connect; Wherein behind the diode VD2 shnt capacitor C3; Parallelly connected with the series circuit of resistance R 1, potentiometer RP again, the winding of said current transformer TA is serially connected in the end of incoming cables of electricity consumption power lead, and its secondary induction current is directly proportional with home-use electric weight.
4. overcurrent carrier wave warning device according to claim 1 is characterized in that: said triggering delay circuit (11) adopts 555 monostable circuit IC.
5. overcurrent carrier wave warning device according to claim 1 is characterized in that: said carrier signal phase lock circuitry (22) is made up of LM567 tone decoder IC1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.
6. overcurrent carrier wave warning device according to claim 1; It is characterized in that: said frequency-selecting amplifier circuit (23) is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to carrier signal decoding scheme (24) through secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T.
7. according to claim 1 or 6 described overcurrent carrier wave warning devices, it is characterized in that: said carrier signal decoding scheme (24) is made up of the audio-frequency transformer (AFT) T1, LM567 ATD IC2, triode VT2 and the LED that connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292521 CN202600036U (en) | 2012-06-20 | 2012-06-20 | Overcurrent carrier alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220292521 CN202600036U (en) | 2012-06-20 | 2012-06-20 | Overcurrent carrier alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600036U true CN202600036U (en) | 2012-12-12 |
Family
ID=47317567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220292521 Expired - Fee Related CN202600036U (en) | 2012-06-20 | 2012-06-20 | Overcurrent carrier alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202600036U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685203A (en) * | 2016-12-21 | 2017-05-17 | 兰州空间技术物理研究所 | A Buck Converter with Overcurrent Shutdown Protection |
| CN107272809A (en) * | 2017-08-14 | 2017-10-20 | 迈普通信技术股份有限公司 | Automatic switch electric installation and system |
| CN107966606A (en) * | 2017-11-23 | 2018-04-27 | 国网四川省电力公司电力科学研究院 | A kind of electric system high-voltage shunt reactor overcurrent false alarm method of discrimination |
-
2012
- 2012-06-20 CN CN 201220292521 patent/CN202600036U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685203A (en) * | 2016-12-21 | 2017-05-17 | 兰州空间技术物理研究所 | A Buck Converter with Overcurrent Shutdown Protection |
| CN106685203B (en) * | 2016-12-21 | 2019-08-23 | 兰州空间技术物理研究所 | A kind of Buck converter of overcurrent shutdown protection |
| CN107272809A (en) * | 2017-08-14 | 2017-10-20 | 迈普通信技术股份有限公司 | Automatic switch electric installation and system |
| CN107272809B (en) * | 2017-08-14 | 2019-06-14 | 迈普通信技术股份有限公司 | It is automatically switched electric installation and system |
| CN107966606A (en) * | 2017-11-23 | 2018-04-27 | 国网四川省电力公司电力科学研究院 | A kind of electric system high-voltage shunt reactor overcurrent false alarm method of discrimination |
| CN107966606B (en) * | 2017-11-23 | 2019-11-12 | 国网四川省电力公司电力科学研究院 | A Discrimination Method for Overcurrent False Alarm of High Voltage Shunt Reactor in Power System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104638768A (en) | Intelligent power distribution security control terminal based on residential electricity consumption | |
| CN106099866A (en) | There is the circuit breaker operation mechanism protection device of short message sending function | |
| CN104237675A (en) | Method and system for testing mobile phone charger | |
| CN206524629U (en) | A kind of low-voltage distribution control system | |
| CN202600036U (en) | Overcurrent carrier alarm device | |
| CN204808517U (en) | Intelligence door and window sensor | |
| CN202189134U (en) | Power failure monitoring device | |
| CN206224745U (en) | Bedroom intelligent safety system | |
| CN107026506A (en) | Home electrical control method and system based on Internet of Things | |
| CN205105003U (en) | Wisdom family terminal | |
| CN203521905U (en) | Terminal intelligent modularization distribution box | |
| CN207637280U (en) | Power failure short message alarm device for farm | |
| CN208209981U (en) | An energy-saving power consumption system | |
| CN202084918U (en) | Electric equipment monitoring system | |
| CN104577952A (en) | Remote current circuit break protection system | |
| CN202230159U (en) | Fault monitoring device of electric equipment | |
| CN205451425U (en) | Domestic security alarm | |
| CN202111451U (en) | Monitoring module for overloaded power consumption | |
| CN202586266U (en) | Power-saving energy-saving power supply device | |
| CN204651613U (en) | Based on the intelligent terminal supply socket of Internet of Things | |
| CN202172264U (en) | Zero line monitoring device | |
| CN203117278U (en) | Multi-loop residual current detection circuit | |
| CN202230130U (en) | Multi-loop current type detection module | |
| CN202230589U (en) | Electric signal acquisition monitoring devices | |
| CN202444252U (en) | Novel power protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130620 |