CN203812015U - Micro current standby circuit for portable multi-component flue gas analyzer - Google Patents
Micro current standby circuit for portable multi-component flue gas analyzer Download PDFInfo
- Publication number
- CN203812015U CN203812015U CN201420193626.4U CN201420193626U CN203812015U CN 203812015 U CN203812015 U CN 203812015U CN 201420193626 U CN201420193626 U CN 201420193626U CN 203812015 U CN203812015 U CN 203812015U
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- Prior art keywords
- bis
- input nand
- pin
- nand gates
- circuit
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- 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 - Lifetime
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 239000003546 flue gas Substances 0.000 title claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005070 sampling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- -1 sulphuric dioxide Chemical compound 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a micro current standby circuit for a portable multi-component flue gas analyzer. The micro current standby circuit mainly comprises a bistable circuit which is composed of four groups of two input NAND gate. The TR3 is connected when the IC2 input terminal (11) is at a high level, and the TR3 is disconnected otherwise, so as to allow a relay K1 to close, a normally open contact to connect, namely the entire circuit is connected. The TR3 is disconnected when the IC2 output terminal is at a low level, no current goes through the coil of the relay, so that the relay is not closed, the relay K1 is connected with a normally close switch, so the entire circuit is disconnected. The TR3 is cut off immediately, when the voltage of the battery is lower than 9.5 V, a voltage between the TR3 and the Vbe is lower than a gate voltage, so that the relay is turned into an open state from a close state immediately, the power supply of the entire machine is turned from connected state to a disconnected state. A portable multi-component flue gas analyzer using the micro current standby circuit is allowed to stay at a standby state for a long time, the standby current is below 5 mA when the analyzer is in a standby sate. It is testified that, the standby time of a 2000 mA/h maintenance-free plumbic acid battery instrument is 3 months, and the electric quantity is kept above 70%.
Description
Technical field
The utility model relates to a kind of circuit structure, specifically, is a kind of micro-electric current stand-by circuit for portable polycomponent flue gas analyzer.
Background technology
Portable polycomponent flue gas analyzer is mainly made up of sampling pump, sensor, part of data acquisition, control circuit board, LCDs and infrared printing machine.The basic functional principle of instrument is: the direct current sampling pump of instrument internal sucks by sampling probe gas to be measured with the flow of setting, through hydroextractor, filter cleaning, be sent in each electrochemical sensor, through electrochemical reaction, produce electric signal (when smoke sampling, thermopair in sampling probe synchronously carries out temperature detection, flue-gas temperature is converted to corresponding electric signal), all signals amplify through measuring system, conversion and the data processing of microsystem directly show or print oxygen, carbon monoxide, sulphuric dioxide, nitrogen monoxide, the data such as nitrogen dioxide isoconcentration and flue-gas temperature.Then calculate the parameter such as burning efficiency, coefficient of excess air carbon dioxide by controlling software according to certain ratio and formula, portable instrument adopts the power supply of 2000mA/h maintenance-free lead-acid battery, what therefore require instrument keeps sufficient power supply for a long time, so that user uses whenever and wherever possible, instrument standby power consumption seems and is even more important.
Summary of the invention
For addressing the above problem, the utility model discloses the micro-electric current stand-by circuit of a kind of portable polycomponent flue gas analyzer and extend instrument stand-by time, thereby extend the maintenance time of instrument to battery and the time of the normal operation of instrument.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of micro-electric current stand-by circuit for portable polycomponent flue gas analyzer, comprise battery, touch key, the two-state control integrated circuit and the relay that are formed by four group of two input nand gate, it is characterized in that: key is touched in described battery anode connection, touch the key other end by capacitor C 2, C43, R10, charging and discharging circuit one tunnel of R11 composition connects pin 2 and the IC2B bis-input nand gate pins 5 of IC2A bis-input nand gates, another road connects capacitor C 42 through D65, the charging and discharging circuit of R167 composition, the other end of capacitor C 42 is connected with the normally closed electric shock of relay, the pin 1 of IC2A bis-input nand gates connects the pin 10 of IC2C bis-input nand gates through resistance R 13, the pin 3 of IC2A bis-input nand gates connects the pin 13 of IC2D bis-input nand gates, IC2B bis-input nand gate pins 6 connect the pin 11 of IC2D bis-input nand gates through resistance R 12, IC2B bis-input nand gate pins 4 connect the pin 8 of IC2C bis-input nand gates, IC2C bis-input nand gate pins 9 connect the pin 11 of IC2D bis-input nand gates, the pin 12 of IC2D bis-input nand gates connects the pin 10 of IC2C bis-input nand gates, the pin 11 of IC2D bis-input nand gates is by resistance R 14, R15 dividing potential drop is connected with the base stage of triode TR3, the 14th pin of IC2 connects anode, IC2 the 7th pin is connected battery cathode with the emitter of triode TR3, the collector connection relay coil of triode TR3, between the pin 1 of IC2A bis-input nand gates and battery cathode, be connected C3 capacitance, between IC2B bis-input nand gate pins 6 and battery cathode, be connected C41 capacitance.
As a kind of improvement of the present utility model, described diode D7 is connected in parallel on coil, and the collector of triode TR3 connects diode D7 positive pole.
The beneficial effects of the utility model are:
Micro-electric current stand-by circuit described in the utility model uses and can keep for a long time holding state on portable multicomponent analysis instrument, when instrument is during in holding state, standby current is below 5mA, through actual measurement checking, the stand-by time of the maintenance-free lead-acid battery instrument of 2000mA/h is after 3 months, electric weight remains on more than 70%, and according to maintenance-free lead-acid battery not being used to the requirement that must charge for 3 months, can extend the serviceable life of battery and can facilitate user to use at any time instrument.
Brief description of the drawings
Fig. 1 is wiring diagram of the present invention.
Embodiment
As shown in the figure, one described in the utility model is micro-electric current stand-by circuit for portable polycomponent flue gas analyzer, comprise battery, touch key, the two-state control integrated circuit CD4093 and the relay that are formed by four group of two input nand gate, key is touched in described battery anode connection, touch the key other end by capacitor C 2, C43, R10, charging and discharging circuit one tunnel of R11 composition connects pin 2 and the IC2B bis-input nand gate pins 5 of IC2A bis-input nand gates, another road connects capacitor C 42 through D65, the charging and discharging circuit of R167 composition, the other end of capacitor C 42 is connected with the normally closed electric shock of relay, the pin 1 of IC2A bis-input nand gates connects the pin 10 of IC2C bis-input nand gates through resistance R 13, the pin 3 of IC2A bis-input nand gates connects the pin 13 of IC2D bis-input nand gates, IC2B bis-input nand gate pins 6 connect the pin 11 of IC2D bis-input nand gates through resistance R 12, IC2B bis-input nand gate pins 4 connect the pin 8 of IC2C bis-input nand gates, IC2C bis-input nand gate pins 9 connect the pin 11 of IC2D bis-input nand gates, the pin 12 of IC2D bis-input nand gates connects the pin 10 of IC2C bis-input nand gates, the pin 11 of IC2D bis-input nand gates is by resistance R 14, R15 dividing potential drop is connected with the base stage of triode TR3, the 14th pin of IC2 connects anode, IC2 the 7th pin is connected battery cathode with the emitter of triode TR3, the collector connection relay coil of triode TR3, between the pin 1 of IC2A bis-input nand gates and battery cathode, be connected C3 capacitance, between IC2B bis-input nand gate pins 6 and battery cathode, be connected C41 capacitance.
Main circuit described in the utility model will form a bistable circuit by four groups of two input nand gates (being with this schmitt trigger), TR3 conducting in the time that IC2 input end 11 is high level, otherwise, TR3 cut-off, make relay K 1 adhesive (relay adhesive), often opening gets an electric shock connects, be that whole circuit is connected, in the time that IC2 is output as low level, TR3 cut-off, relay coil no current passes through, therefore not adhesive, K1 still connects normally closed switch, be that whole feed circuit disconnect, when cell voltage is during lower than 9.5V, Vbe(base stage and the emitter of TR3) between voltage lower than its voltage that opens the door, therefore TR3 ends immediately, make relay become closed condition from attracting state immediately, like this, complete machine power supply also transfers disconnection to immediately by connecting.
Original state:
Once instrument connects battery, IC2 just enters duty, the effect due to C42 when battery on rigidly connecting, IC2 the 11st end sets low level, feeds back to 9 ends, and making 10 ends is high level, because 5,6 ends are low level, make 3 again, 4 ends are high, and such 12,13 ends are high level, make 11 ends continue to keep low level, and then make 10 ends keep high level, therefore, in the time of original state 3,4 of IC2,1,10,12 ends are high level, 2,5,6,9,11 is low level, now TR3 cut-off, relay K 1 not adhesive, circuit is in off state.
" start " state:
Touch key when pressing S1, because C2 both end voltage can not be suddenlyd change, be equivalent to add a high trigger pip at 2,5 ends of IC2, because 1,2 end is high level, 3 ends are low level, make to export 11 ends and become low level from high level, 8,9 be height, 10 ends are by high step-down simultaneously, TR3 conducting like this, relay K 1 adhesive, normally opened contact is connected, complete machine electric power starting, 6,3 of IC2,4,11 is high level
1,2,5,10 is low level.
" shutdown " state:
Instrument, in the time of " start " state, is again pressed S1 and is touched key, and due to the effect of C2, button is equivalent to add a positive trigger pip at 5,2 ends of IC2.Because 5,6 ends are high level, 4 ends are low level, make 10 ends from the low high level that becomes, and 12,13 all become high level, and making 11 ends is low level by hypermutation, and TR3 becomes cut-off by conducting, and relay contact is normally closed, and complete machine power supply is " shutdown " state.3,4,1,10 of IC2,12 ends are high level, 2,5,6,9,11 is low level, returns original state.
In a word, often press a S1 and touch key, bistable state just changes a state, becomes another state (output is high level) from a state (output is low level), thereby makes relay K 1 adhesive or disconnection, controls " start " or " shutdown " of complete machine.Under actual measurement original state, under holding state, electric current is less than 5mA.
Diode D7 described in the utility model is connected in parallel on coil, and the collector of triode TR3 connects diode D7 positive pole, and the D7 in circuit plays the effect of protective relay, and D65 prevents relay misoperation work, improves safety and the temperature of circuit.
Use the portable multicomponent analysis instrument of micro-electric current stand-by circuit described in the utility model can keep for a long time holding state, when instrument is during in holding state, standby current is below 5mA, through actual measurement checking, the stand-by time of the maintenance-free lead-acid battery instrument of 2000mA/h is after 3 months, electric weight remains on more than 70%, and according to maintenance-free lead-acid battery not being used to the requirement that must charge for 3 months, can extend the serviceable life of battery and can facilitate user to use at any time instrument.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned embodiment, also comprises the technical scheme being made up of above technical characterictic combination in any.
Claims (2)
1. a micro-electric current stand-by circuit for portable polycomponent flue gas analyzer, comprise battery, touch key, the two-state control integrated circuit and the relay that are formed by four group of two input nand gate, it is characterized in that: key is touched in described battery anode connection, touch the key other end by capacitor C 2, C43, R10, charging and discharging circuit one tunnel of R11 composition connects pin 2 and the IC2B bis-input nand gate pins 5 of IC2A bis-input nand gates, another road connects capacitor C 42 through D65, the charging and discharging circuit of R167 composition, the other end of capacitor C 42 is connected with the normally closed electric shock of relay, the pin 1 of IC2A bis-input nand gates connects the pin 10 of IC2C bis-input nand gates through resistance R 13, the pin 3 of IC2A bis-input nand gates connects the pin 13 of IC2D bis-input nand gates, IC2B bis-input nand gate pins 6 connect the pin 11 of IC2D bis-input nand gates through resistance R 12, IC2B bis-input nand gate pins 4 connect the pin 8 of IC2C bis-input nand gates, IC2C bis-input nand gate pins 9 connect the pin 11 of IC2D bis-input nand gates, the pin 12 of IC2D bis-input nand gates connects the pin 10 of IC2C bis-input nand gates, the pin 11 of IC2D bis-input nand gates is by resistance R 14, R15 dividing potential drop is connected with the base stage of triode TR3, the 14th pin of IC2 connects anode, IC2 the 7th pin is connected battery cathode with the emitter of triode TR3, the collector connection relay coil of triode TR3, between the pin 1 of IC2A bis-input nand gates and battery cathode, be connected C3 capacitance, between IC2B bis-input nand gate pins 6 and battery cathode, be connected C41 capacitance.
2. one according to claim 1 micro-electric current stand-by circuit for portable polycomponent flue gas analyzer, is characterized in that: diode D7 is connected in parallel on coil, and the collector of triode TR3 connects diode D7 positive pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193626.4U CN203812015U (en) | 2014-04-21 | 2014-04-21 | Micro current standby circuit for portable multi-component flue gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193626.4U CN203812015U (en) | 2014-04-21 | 2014-04-21 | Micro current standby circuit for portable multi-component flue gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812015U true CN203812015U (en) | 2014-09-03 |
Family
ID=51450744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420193626.4U Expired - Lifetime CN203812015U (en) | 2014-04-21 | 2014-04-21 | Micro current standby circuit for portable multi-component flue gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326860A (en) * | 2022-01-05 | 2022-04-12 | 湖南汽车工程职业学院 | Anti-surge dual-power locomotive temperature control system |
-
2014
- 2014-04-21 CN CN201420193626.4U patent/CN203812015U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326860A (en) * | 2022-01-05 | 2022-04-12 | 湖南汽车工程职业学院 | Anti-surge dual-power locomotive temperature control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |