CN102393510A - Detection system for standing power supply - Google Patents
Detection system for standing power supply Download PDFInfo
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- CN102393510A CN102393510A CN2011102746624A CN201110274662A CN102393510A CN 102393510 A CN102393510 A CN 102393510A CN 2011102746624 A CN2011102746624 A CN 2011102746624A CN 201110274662 A CN201110274662 A CN 201110274662A CN 102393510 A CN102393510 A CN 102393510A
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Abstract
The invention relates to a detection system for a standing power supply, which comprises a standing power supply voltage acquisition circuit, a conventional power supply voltage acquisition circuit, a singlechip control circuit, an RS485 communication interface circuit and a carrier signal lock phase circuit. Signals acquired by the standing power supply voltage acquisition circuit and the conventional power supply voltage acquisition circuit are transmitted to the singlechip control circuit through an operational amplification rectification regulation circuit, an analog switch circuit and an analog-to-digital (A/D) data conversion circuit in sequence, and are output to the RS485 communication interface circuit and the carrier signal lock phase circuit under the control of the singlechip control circuit; and the output signal of the carrier signal lock phase circuit is sent to a carrier signal decoding circuit through a frequency-selective amplifier. In the detection system for the standing power supply, three-phase voltage is adopted to acquire voltage signals, and when the voltage is abnormal, a fault signal is combined with a carrier signal through system buses by a singlechip to give an alarm to an on duty control center to send an alarm signal, and the fault signal is combined with the carrier signal through the system buses, thereby, the missing report and false report are avoided.
Description
Technical field
The present invention relates to the electric power detecting field, particularly be a kind of standing electric power detecting system.
Background technology
The dual power supply protective device is the switching device shifter between primary power and the standby power supply, and traditional double-power supply switching device only has translation function, and when the warning bus breaks down, the power supply current state can't be understood by control center, can cause serious consequence.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of standing electric power detecting system is provided.
The technical solution adopted for the present invention to solve the technical problems is: standing electric power detecting system; Comprise backup power source voltage Acquisition Circuit, supply voltage Acquisition Circuit commonly used, single chip machine controlling circuit, RS485 communication interface circuit, carrier signal phase lock circuitry, frequency-selecting amplifier circuit, carrier signal decoding scheme; The signal of said backup power source voltage Acquisition Circuit, supply voltage Acquisition Circuit collection commonly used 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 and 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 is also exported and is connected a watchdog circuit.
Said RS485 communication interface circuit sends data message through the SN75176 communication interface modules to PC.
Said carrier signal phase lock circuitry is made up of LM567 tone decoder and peripheral electric capacity, the resistance that connects thereof.
Said frequency-selecting amplifier circuit is made up of elementary, the capacitor of first triode, first audio-frequency transformer (AFT), and sends data-signal through electric wire to the carrier signal decoding scheme through the secondary of first audio-frequency transformer (AFT).
Said carrier signal decoding scheme is made up of second audio-frequency transformer (AFT), LM567 ATD, second triode and the light emitting diode that connect successively.
Through adopting above-mentioned technical scheme; The invention has the beneficial effects as follows: the present invention adopts three-phase voltage to gather voltage signal, when voltage occurs when unusual, through single-chip microcomputer with this fault-signal respectively through system bus and carrier signal to the control center on duty main frame transmission alerting signal of reporting to the police; And be sent to PC; Show current state, it combines with carrier signal through system bus, has avoided failing to report, reporting by mistake.
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; Standing electric power detecting system of the present invention; Comprise backup power source voltage Acquisition Circuit 1, supply voltage Acquisition Circuit 2 commonly used, single chip machine controlling circuit 3, RS485 communication interface circuit 4, carrier signal phase lock circuitry 5, frequency-selecting amplifier circuit 6, carrier signal decoding scheme 7; The signal that said backup power source voltage Acquisition Circuit 1, supply voltage Acquisition Circuit commonly used 2 are gathered transfers to single chip machine controlling circuit 3 through amplifier rectification adjustment circuit 11, analog switching circuit 12, A/D data converting circuit 13 successively; Export RS485 communication interface circuit 4 and carrier signal phase lock circuitry 5 to by single chip machine controlling circuit 3 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, and said single chip machine controlling circuit 3 is also exported and connected a watchdog circuit 8.
Of Fig. 2, phase voltage mutual inductor B1, B2, B3 gathered power supply three-phase voltage commonly used respectively and constitute the 380V loop voltage, through ratio output in 100: 1; When phase voltage mutual inductor B1 primary voltage was 220V, when the secondary output voltage of phase voltage mutual inductor B1 was 2.2V, bridge rectifier circuit D1-D4 had direct current signal output; The 13rd pin voltage of analog switch module I C1 is 1.5V; Its output signal is input to the 2nd pin of A/D data converter IC2, after the inner A/D data-switching of A/D data converter IC2, is connected to the 33rd, 32,28 pin of single-chip microcomputer IC5; After single-chip microcomputer IC5 internal processes was judged, be the normal voltage monitoring range this moment.
When phase voltage mutual inductor B1 primary voltage is 0V; When phase voltage mutual inductor B1 secondary output voltage is 0V; Bridge rectifier circuit D1-D4 does not have direct current signal output, and the 13rd pin voltage of analog switch module I C1 is 0V also, is input to the 2nd pin of A/D data converter IC2; After the inner A/D data-switching of A/D data converter IC2; Single-chip microcomputer IC5 read data information is judged as and has a power failure or the phase shortage power fail, after the computing of single-chip microcomputer IC5 internal processes is judged, forms the RS485 communication interface circuit by the 10th, 11,39 pin of single-chip microcomputer IC5 and the 1st, 2,3,4 pin of SN75176 communication interface modules IC4; Transmit real-time current voltage data information by single-chip microcomputer IC5 to SN75176 communication interface modules IC4; IC4 is sent to PC through the SN75176 communication interface modules, shows current three-phase voltage and voltage failure situation by the PC configuration software, by the operator on duty to the power fail handled.
The multivibrator that another route LM567 tone decoder U1 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 2C2, capacitor 2C3 by triode VT1, audio-frequency transformer (AFT) T constitute the frequency-selecting amplifier circuit; The 4th pin output high level signal by single-chip microcomputer IC5; Make LM567 tone decoder U1 obtain working power; LM567 tone decoder U1 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.
The audio-frequency transformer (AFT) T1 that connects successively, LM567 ATD U2, triode VT2, LED constitute the carrier signal decoding scheme; The time constant of resistance 1R1, electric capacity 1C5 network has determined the voltage controlled oscillator of LM567 ATD U2; 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 electric capacity 1C1, audio-frequency transformer (AFT) T1, its secondary L3, electric capacity 1C2, electric capacity 1C3 form a carrier wave frequency selection network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD U2 through electric capacity 1C4, after LM567 ATD U2 decoding, by its 8th pin output terminal output low level; Make triode VT2 conducting; LED is lighted, and has received the carrier data signal of extension set, explains that power fail has appearred in power supply commonly used; Reach through system bus and combine, avoid failing to report, reporting by mistake with carrier signal.
Form the standby power supply testing circuit by 1B1,1B2,1B3, D13-D21 etc., its principle of work is identical with power circuit principle commonly used, 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 (6)
1. standing electric power detecting system; It is characterized in that: comprise backup power source voltage Acquisition Circuit (1), supply voltage Acquisition Circuit (2) commonly used, single chip machine controlling circuit (3), RS485 communication interface circuit (4), carrier signal phase lock circuitry (5), frequency-selecting amplifier circuit (6), carrier signal decoding scheme (7); The signal that said backup power source voltage Acquisition Circuit (1), supply voltage Acquisition Circuit (2) commonly used are gathered transfers to single chip machine controlling circuit (3) through amplifier rectification adjustment circuit (11), analog switching circuit (12), A/D data converting circuit (13) successively; Export RS485 communication interface circuit (4) and carrier signal phase lock circuitry (5) to by single chip machine controlling circuit (3) 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. standing electric power detecting system according to claim 1 is characterized in that: said single chip machine controlling circuit (3) is also exported and is connected a watchdog circuit (8).
3. standing electric power detecting system according to claim 1 is characterized in that: said RS485 communication interface circuit (4) sends data message through the SN75176 communication interface modules to PC.
4. standing electric power detecting system according to claim 1 is characterized in that: said carrier signal phase lock circuitry (5) is made up of LM567 tone decoder and peripheral electric capacity, the resistance that connects thereof.
5. standing electric power detecting system according to claim 1; It is characterized in that: said frequency-selecting amplifier circuit (6) is made up of elementary, the capacitor of first triode, first audio-frequency transformer (AFT), and sends data-signal through electric wire to carrier signal decoding scheme (7) through the secondary of first audio-frequency transformer (AFT).
6. according to claim 1 or 5 described standing electric power detecting systems, it is characterized in that: said carrier signal decoding scheme (7) is made up of second audio-frequency transformer (AFT), LM567 ATD, second triode and the light emitting diode that connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102746624A CN102393510A (en) | 2011-09-16 | 2011-09-16 | Detection system for standing power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102746624A CN102393510A (en) | 2011-09-16 | 2011-09-16 | Detection system for standing power supply |
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| Publication Number | Publication Date |
|---|---|
| CN102393510A true CN102393510A (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102746624A Pending CN102393510A (en) | 2011-09-16 | 2011-09-16 | Detection system for standing power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472286A (en) * | 2013-09-30 | 2013-12-25 | 常熟市明阳电器安装工程有限公司 | Electrical appliance abnormal voltage monitoring system |
| CN105116212A (en) * | 2015-09-06 | 2015-12-02 | 深圳市天工测控技术有限公司 | Current detection system of GNSS module and detection method of current detection system |
| CN108267697A (en) * | 2018-03-09 | 2018-07-10 | 浙江大学 | A kind of bank base power supply output transient state monitoring system for water quality online observation net |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200983517Y (en) * | 2006-12-12 | 2007-11-28 | 郴州市东塘电气设备有限公司 | Dual-power supply automatic switching device |
| CN101251561A (en) * | 2008-04-01 | 2008-08-27 | 济南新吉纳远程测控有限公司 | Monitoring system and monitoring method for solar energy power generation system |
| CN201965719U (en) * | 2010-12-29 | 2011-09-07 | 福建俊豪电子有限公司 | Short circuit monitoring warning circuit of electrical equipment |
-
2011
- 2011-09-16 CN CN2011102746624A patent/CN102393510A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200983517Y (en) * | 2006-12-12 | 2007-11-28 | 郴州市东塘电气设备有限公司 | Dual-power supply automatic switching device |
| CN101251561A (en) * | 2008-04-01 | 2008-08-27 | 济南新吉纳远程测控有限公司 | Monitoring system and monitoring method for solar energy power generation system |
| CN201965719U (en) * | 2010-12-29 | 2011-09-07 | 福建俊豪电子有限公司 | Short circuit monitoring warning circuit of electrical equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472286A (en) * | 2013-09-30 | 2013-12-25 | 常熟市明阳电器安装工程有限公司 | Electrical appliance abnormal voltage monitoring system |
| CN105116212A (en) * | 2015-09-06 | 2015-12-02 | 深圳市天工测控技术有限公司 | Current detection system of GNSS module and detection method of current detection system |
| CN105116212B (en) * | 2015-09-06 | 2018-03-09 | 深圳市天工测控技术有限公司 | The current detecting system and its method of GNSS module |
| CN108267697A (en) * | 2018-03-09 | 2018-07-10 | 浙江大学 | A kind of bank base power supply output transient state monitoring system for water quality online observation net |
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Application publication date: 20120328 |