CN104638758B - Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator - Google Patents

Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator Download PDF

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Publication number
CN104638758B
CN104638758B CN201510055302.3A CN201510055302A CN104638758B CN 104638758 B CN104638758 B CN 104638758B CN 201510055302 A CN201510055302 A CN 201510055302A CN 104638758 B CN104638758 B CN 104638758B
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China
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circuit
power supply
voltage
main power
power source
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CN201510055302.3A
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CN104638758A (en
Inventor
邵泽华
吴岳飞
权亚强
杨忠
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Chengdu Qinchuan IoT Technology Co Ltd
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Chengdu Qinchuan Technology Development Co Ltd
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Abstract

The invention discloses a real-time detection and switching circuit for a power supply of a remote control intelligent gas meter concentrator. The real-time detection and switching circuit comprises an automatic voltage detection and switching circuit, a main power supply voltage detection circuit, a backup power supply voltage detection circuit, a first reversed stop circuit, a second reversed stop circuit and a main control MCU, wherein the two output ends of the automatic voltage detection and switching circuit are respectively connected with the second reversed stop circuit and the backup power supply voltage detection circuit; an external main power supply is connected with the main power supply voltage detection circuit and the first reversed stop circuit respectively; the output ends of the main power supply voltage detection circuit, the first reversed stop circuit, the second reversed stop circuit and the backup power supply voltage detection circuit are connected with the main control MCU. The real-time detection and switching circuit realizes power supplying detection of the main power supply and a backup power supply and realizes seamless switching of hardware; furthermore, the main power supply voltage detection circuit and the backup power supply voltage detection circuit are used for detecting the state of the power supplying circuit in real time and reporting the state of the power supplying circuit through the main control MCU, and safe power supplying of equipment is realized.

Description

Remote-control intelligent gas meter concentrator power supply real-time detection and switching circuit
Technical field
The present invention relates to a kind of remote-control intelligent gas meter concentrator power supply real-time detection and switching circuit.
Background technology
Concentrator (concentrator device) is that the central connection point connecting terminal, computer or communication equipment sets Standby.In some terminal compact districts, usually reduce communication line, first terminal is connected to concentrator, then again through high-speed line Concentrator is connected to the communication controler of computer by road, and therefore, concentrator is also share wires and improves line efficiency A kind of effective equipment.But the existing concentrator for remote-control intelligent gas meter, there is no the function of stand-by power supply;Even if The function of having stand-by power supply nor the seamless switching realizing hardware, and can not accomplish that the state to power supply circuits is carried out in real time Monitoring.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, provide a kind of remote-control intelligent gas meter concentrator power supply real When detection and switching circuit, have the advantages that switching time is fast, seamless delay.
The purpose of the present invention is achieved through the following technical solutions: remote-control intelligent gas meter concentrator power supply is examined in real time Survey and switching circuit, it includes automatic voltage detection and switching circuit, main power voltage testing circuit, backup power source voltage detection Circuit, the first reverse cut-off circuit, the second reverse cut-off circuit and master control mcu, described automatic voltage detection and switching circuit Two inputs is connected with outside main power source and outside stand-by power supply respectively, described automatic voltage detection and switching circuit Two outfans are connected with the second reverse cut-off circuit and backup power source voltage testing circuit respectively, outside main power source also respectively with Main power voltage testing circuit and the first reverse cut-off circuit connect, main power voltage testing circuit, the first reverse cut-off circuit, The outfan of the second reverse cut-off circuit and backup power source voltage testing circuit is all connected with master control mcu, the first reverse cut-off electricity The outfan of road and the second reverse cut-off circuit is additionally operable to power supply output.
Described automatic voltage detection is used for detecting the voltage of main power source and stand-by power supply with switching circuit, and according to voltage Situation selects power supply: when main power source has electricity, automatically switches to main power source and powers;Automatically switch to when main power source power down Stand-by power supply is powered;When electricity on main power source, automatically switch to main power source and power.
Described main power voltage testing circuit and stand-by power supply testing circuit are respectively used to detect main power source and standby electricity Voltage on the power supply circuits in source is simultaneously transferred to master control mcu.
Main power voltage detection signal and stand-by power supply that described master control mcu sends according to main power voltage testing circuit The backup power source voltage detection signal that voltage detecting circuit sends, provides current power supply circuits working condition and indicates:
(1) when detecting is that main power source is powered, if the voltage of backup power source voltage testing circuit output and main power source The voltage of voltage detecting circuit output is close, can cause the situation that main power source is powered to stand-by power supply, then the second reverse cut-off electricity Road is abnormal, and mcu provides the second anti-phase throttle circuit abnormal operation instruction;
(2) when detecting is that main power source is powered, if the voltage of backup power source voltage testing circuit output is standby electricity The normal detection voltage in source, then automatic voltage detection is abnormal with switching circuit, and it is abnormal with switching circuit that mcu provides automatic voltage detection Working condition indicates;
(3) when stand-by power supply is powered upon this detection, if detect main power voltage testing circuit output voltage with The voltage of backup power source voltage testing circuit output is close, can cause the situation that stand-by power supply is powered to main power source, then first is anti- Abnormal to cut-off circuit, mcu provides the first reverse cut-off circuit abnormal operation instruction.
Model msp430 of described master control mcu.
Described outside stand-by power supply is aneroid battery.
The invention has the beneficial effects as follows: (1) present invention by automatic voltage detection and switching circuit realize main power source with standby With the confession electro-detection of power supply, realize hardware seamless switching, have the advantages that switching time is fast, seamless delay;(2) present invention passes through Main power source and backup power source voltage testing circuit, real-time detection power supply circuits state simultaneously passes through master control its state of mcu active reporting, Realize equipment safety to power.
Brief description
Fig. 1 is present configuration block diagram.
Specific embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings: as shown in figure 1, remote-control intelligent gas meter collection Middle device power supply real-time detection and switching circuit, it includes automatic voltage detection and switching circuit, main power voltage testing circuit, standby With voltage detection circuit, the first reverse cut-off circuit, the second reverse cut-off circuit and master control mcu, described automatic voltage Detection is connected with outside main power source and outside stand-by power supply respectively with two inputs of switching circuit, and described automatic voltage is examined Survey and be connected with the second reverse cut-off circuit and backup power source voltage testing circuit respectively with two outfans of switching circuit, outside Main power source is also connected with main power voltage testing circuit and the first reverse cut-off circuit respectively, main power voltage testing circuit, The outfan of one reverse cut-off circuit, the second reverse cut-off circuit and backup power source voltage testing circuit is all connected with master control mcu, The outfan of the first reverse cut-off circuit and the second reverse cut-off circuit is additionally operable to power supply output.
Described automatic voltage detection is used for detecting the voltage of main power source and stand-by power supply with switching circuit, and according to voltage Situation selects power supply: when main power source has electricity, automatically switches to main power source and powers;Automatically switch to when main power source power down Stand-by power supply is powered;When electricity on main power source, automatically switch to main power source and power.
Described main power voltage testing circuit and stand-by power supply testing circuit are respectively used to detect main power source and standby electricity Voltage on the power supply circuits in source is simultaneously transferred to master control mcu.
Main power voltage detection signal and stand-by power supply that described master control mcu sends according to main power voltage testing circuit The backup power source voltage detection signal that voltage detecting circuit sends, provides current power supply circuits working condition and indicates:
(1) when detecting is that main power source is powered, if the voltage of backup power source voltage testing circuit output and main power source The voltage of voltage detecting circuit output is close, can cause the situation that main power source is powered to stand-by power supply, then the second reverse cut-off electricity Road is abnormal, and mcu provides the second anti-phase throttle circuit abnormal operation instruction;
(2) when detecting is that main power source is powered, if the voltage of backup power source voltage testing circuit output is standby electricity The normal detection voltage in source, then automatic voltage detection is abnormal with switching circuit, and it is abnormal with switching circuit that mcu provides automatic voltage detection Working condition indicates;
(3) when stand-by power supply is powered upon this detection, if detect main power voltage testing circuit output voltage with The voltage of backup power source voltage testing circuit output is close, can cause the situation that stand-by power supply is powered to main power source, then first is anti- Abnormal to cut-off circuit, mcu provides the first reverse cut-off circuit abnormal operation instruction.
Model msp430 of described master control mcu.
Described outside stand-by power supply is aneroid battery.

Claims (4)

1. remote-control intelligent gas meter concentrator power supply real-time detection and switching circuit it is characterised in that: it includes automatic voltage inspection Survey and switching circuit, main power voltage testing circuit, backup power source voltage testing circuit, the first reverse cut-off circuit, second anti- To cut-off circuit and master control mcu, two inputs of described automatic voltage detection and switching circuit respectively with outside main power source Connect with outside stand-by power supply, described automatic voltage detection is reversely ended with second respectively with two outfans of switching circuit Circuit and backup power source voltage testing circuit connect, and outside main power source is also reverse with main power voltage testing circuit and first respectively Cut-off circuit connects, main power voltage testing circuit, the first reverse cut-off circuit, the second reverse cut-off circuit and stand-by power supply electricity The outfan of pressure testing circuit is all connected with master control mcu, the outfan of the first reverse cut-off circuit and the second reverse cut-off circuit It is additionally operable to power supply output, described master control mcu is also connected with outside Working Status Monitoring module;Described main power voltage detection Circuit and stand-by power supply testing circuit are respectively used to detect voltage on main power source and the power supply circuits of stand-by power supply and are transferred to Master control mcu;
Main power voltage detection signal and backup power source voltage that described master control mcu sends according to main power voltage testing circuit The backup power source voltage detection signal that testing circuit sends, provides current power supply circuits working condition and indicates:
(1) when detecting is that main power source is powered, if the voltage of backup power source voltage testing circuit output and main power voltage The voltage of testing circuit output is close, then the second reverse cut-off circuit is abnormal, and mcu provides the second reverse cut-off circuit abnormal work State instruction;
(2) when detecting is that main power source is powered, if the voltage of backup power source voltage testing circuit output is for stand-by power supply just Often detection voltage, then automatic voltage detection is abnormal with switching circuit, and mcu provides automatic voltage detection and switching circuit abnormal work State instruction;
(3) when detecting is that stand-by power supply is powered, if detect main power voltage testing circuit output voltage with standby The voltage of voltage detection circuit output is close, then the first reverse cut-off circuit is abnormal, and mcu provides the first reverse cut-off circuit Abnormal operation indicates.
2. remote-control intelligent gas meter concentrator power supply real-time detection according to claim 1 and switching circuit, its feature exists In: described automatic voltage detection is used for detecting the voltage of main power source and stand-by power supply with switching circuit, and according to voltage condition Select power supply.
3. remote-control intelligent gas meter concentrator power supply real-time detection according to claim 1 and switching circuit, its feature exists In: model msp430 of described master control mcu.
4. remote-control intelligent gas meter concentrator power supply real-time detection according to claim 1 and switching circuit, its feature exists In: described outside stand-by power supply is aneroid battery.
CN201510055302.3A 2015-02-03 2015-02-03 Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator Active CN104638758B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510055302.3A CN104638758B (en) 2015-02-03 2015-02-03 Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510055302.3A CN104638758B (en) 2015-02-03 2015-02-03 Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator

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CN104638758B true CN104638758B (en) 2017-01-18

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Publication number Priority date Publication date Assignee Title
CN109253770B (en) * 2018-11-21 2019-11-05 北京市燃气集团有限责任公司 A kind of anti-theft type rotz flowmeter

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* Cited by examiner, † Cited by third party
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JP2001251860A (en) * 2000-03-06 2001-09-14 Matsushita Electric Ind Co Ltd Remote control standby apparatus
CN101719689A (en) * 2009-12-16 2010-06-02 威胜集团有限公司 Dual power supply switching circuit for electronic electric energy meter
CN204408003U (en) * 2015-02-03 2015-06-17 成都秦川科技发展有限公司 Remote-control intelligent gas meter concentrator power supply detects and commutation circuit in real time

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Address after: 610199 Longquanyi, Sichuan Province Industrial Park licensing

Patentee after: Chengdu Qinchuan networking Polytron Technologies Inc

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Patentee before: Chengdu Taichuan Technology Development Co., Ltd.

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