CN2405564Y - Delay-type wet-sensitive electronic monitoring alarm - Google Patents

Delay-type wet-sensitive electronic monitoring alarm Download PDF

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CN2405564Y
CN2405564Y CN 99250408 CN99250408U CN2405564Y CN 2405564 Y CN2405564 Y CN 2405564Y CN 99250408 CN99250408 CN 99250408 CN 99250408 U CN99250408 U CN 99250408U CN 2405564 Y CN2405564 Y CN 2405564Y
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circuit
resistance
transistor
capacitance
quick
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卢崇劭
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Abstract

The utility model discloses an energy saving and delay type portable humidity-sensitive electronic monitoring alarm, using a speech integrated circuit. The utility model is mainly used for the alarm of wetness caused by feces and urine. In the utility model, an electronic switch is arranged between the input terminal of a resistance-capacitance delay circuit and a power supply; a capacitance charge timing intermittent discharge circuit which is controlled by the output signals of a power amplification circuit is arranged between the output terminal of the resistance-capacitance delay circuit and the output terminal of an audio power amplification circuit; the utility model is also provided with a capacitance residual-charge quick bleeder circuit which is controlled by a moisture detecting switch circuit. The utility model has the advantages of little power consumption for static watch, capability of intermittent alarm and automatic position restoration, little acoustic disturbance for infants, energy saving, portability, and easy manufacture.

Description

The delayed type quick electronic monitoring annunciator that wets
This utility model relates to a kind of delayed type that adopts speech IC to produce the alarm signal and signals or calling device, urinates the wet quick electronic monitoring annunciator of delayed type of moist alarm in particular for baby and the personnel's dung of can't take care of oneself.
In order to make the baby and the personnel's that can't take care of oneself diaper urine can access timely replacing after wet, to eliminate the hidden danger that infects diaper rash, at present several circuit differences have appearred but the close electronics newspaper urine circuit of function wherein adopts the delayed type urine-wet alarm device result of use of speech IC better.At present the urine-wet alarm of no delay circuit all adopts immediately and notifies, i.e. baby-piss, and it just sends sound equipment immediately, and this sometimes sound can startle the baby, and urine can not once have been spread, and can wet by very fast urine again after waiting to change new diaper.And delayed type baby urine-wet alarm has delay circuit, can wait until the baby help a small child urinate by holding his legs apart spread fully after again sounding notify.The delayed type urine-wet alarm circuit of " the practical electronic circuit collection of choice specimens " the 38th~42 page of introduction of publishing as New Age Press 1991, and People's Telecon Publishing House 1994 publish " delayed type baby's urine-wet alarm of the employing speech IC of the 175th~176 page of introduction of the integrated circuit application handbook of voice, simulated sound and language also has recent patent announcement number to be the disclosed urine-wet alarm of CN2325006Y.Owing to adopted RC capacitance-resistance integral delay circuit in the alarm circuit, therefore, diaper urinated wet after, alarm circuit just sends alarm sound after through an of short duration interval.Wet diaper is in time changed, reduced the replacing number of times of diaper simultaneously again.But, because the charging resistor input in the capacitance-resistance delay circuit that is adopted communicates with positive source all the time, be that delay circuit exists input signal all the time, the outfan current potential that can only rely on the sensitive switch circuit of forming by transistor and resistance to come control lag circuit charging resistor and delay electric capacity to join, promptly the output signal by the control lag circuit reaches control and triggers transistor turns and end, and then is produced the purpose of alarm signal by speech IC.Not wet and when being in stand-by state static at diaper by urine, must make the delay electric capacity shorted to earth that links to each other with the charging resistor outfan by the partial flow bypass path transistor of saturation conduction all the time, postpone electric capacity positive electrical position and be clamped at electronegative potential, could guarantee to trigger transistor and end, make the speech IC Triggerless and do not work; After diaper is urinated and is wet, owing to making pass-transistor, the signal detection transistor turns ends, clamping action disappears, postponing electric capacity is recharged, after a period of time postpones, triggering transistor base current potential is constantly risen, when rising to the transistor on-level, become conducting by ending, by emitter stage output high level, trigger sound circuit and produce alarm signal.Therefore, owing to there is big electric current to pass through in charging resistor and the bypass clamping transistor all the time, and power consumption is bigger when causing static state to be waited for when static, and shortening with time delay, be reducing of charging resistor resistance, quiescent current is increased, cause quiescent dissipation to increase.Owing to having determined it to have static state, the job specification of urine-wet alarm device waits for the chronic very short characteristics of working time of reporting to the police, therefore secondly mainly not wet by urine by diaper and quiescent dissipation decision when being in stand-by state in the service life of battery is the warning duty power consumption of urine after wet.Like this, it is all bigger that the static state of known several delayed alarm circuits is waited for electric current, need the bigger battery of use capacity, the problem that therefore all have the big expense of quiescent current electricity, quiescent dissipation is relevant with the length of time delay, volume is big, weight is heavier, is not easy to carry.Urinated wet during the changing babies' napkin more at diaper, known several alarm circuit circuits for triggering emitter is always high level, promptly urine wets and once can only produce a high trigger signal, therefore its alarm signal is according to the difference of the triggering mode that speech IC adopted, be divided into following two kinds of situations: a kind of situation is to adopt not keep triggering mode, just stop to report to the police after promptly only sending once complete audio alert signal, if this chimes of doom children under guardianship person for a certain reason and is not heard, even then the monitoring personnel return the custodial person at one's side, can not learn diaper by the wet situation of urine yet, thereby lose the warning meaning by alarm; Another kind of situation is to adopt to keep triggering mode, be the alarm voice signal once produce just can go round and begin again and continuously ring, up to human intervention is powered-down or more till the changing babies' napkin, if this moment for a certain reason and in time powered-down or more changing babies' napkin, urinated at diaper then that sound circuit will send successive voice sound between wet spell, like this, on the one hand can to the baby and around other people bring serious interference, on the other hand because the work meeting of reporting to the police incessantly consumes the more electric energy that needn't consume, thereby reduced the service life of battery.In addition, because the warning volume is non-adjustable, and the sound that general sound circuit produces is all bigger, and unexpected big volume chimes of doom can be frightened the baby or be made baby's uneasiness, disturb baby and orthobiosis of personnel on every side thereof, also can make the electric energy increase of consumption simultaneously greatly because of operating current.In addition because wet quick sensor probe adopts the little printed circuit board of a hard or adopt two isolating electrodes or employing to stamp the flexible plastic sheet of conduction seal material and flexible glue lead or puncture to sew on diaper with two bare copper wires and make, so have following problems: two electrodes and wire bonds place very easily fracture on the printed circuit board (PCB).The user mode of probe has determined its hard substrate can not do greatlyyer, otherwise can press against the people, and probe positions is difficult for fixing and produces displacement thereby caused in use, loses the urine-wet alarm meaning owing to probe departs from effective search coverage.The then more difficult use of wet quick sensor probe of adopting two isolating electrodes or puncturing on diaper and sew and make with two bare copper wires, structure is also not too reasonable.All the mechanical strength of the wet quick sensor probe of employing soft structures is less again, and is more fragile in the use.
During very low and static the waiting for of power consumption that the purpose of this utility model provides a kind of static state before urine is wet when waiting for power consumption and time delay length have nothing to do, the wet back of the urine extremely more preceding newspaper of changing babies' napkin can be sent certain hour alarm sound at intermittence at interval automatically between wet spell, can automatically reset after alarm finishes, be easy to carry, easier manufacturing and use have intermittently alarm and a wet quick electronic monitoring annunciator of electricity saving function energy-saving portable delayed type.
For achieving the above object, the solution that this utility model adopts is: adopt level or pulse not to keep the speech IC of triggering mode.Still adopt RC capacitance-resistance integral delay circuit commonly used, but changed the mode that control capacitance-resistance integral delay circuit produces inhibit signal, between the input of RC capacitance-resistance integral delay circuit and positive source, an electrical switch that belongs to moist signal detection on-off circuit has been set.This electrical switch is made up of CMOS integrated gate circuit or cmos analog switch or transistor, output high level when wet quick sensor probe detects moist signal, output low level during the free from dampness signal.Height by control charging resistor input level is controlled the charging of time-delay integrating capacitor, and output signal is delayed, and then urine-wetting signal is postponed to be sent to speech IC generation alarm sound.Like this, when diaper is not waited for by the wet static state of urine, all do not have the operating current from power supply in each element of circuit, and have only minimum leakage current to consume micro-electric energy, so quiescent dissipation is extremely low, the less button cell of use capacity can long-term continuous operation.Since static state when waiting in the capacitance-resistance integral delay circuit no current pass through, therefore, quiescent dissipation with time delay length have nothing to do.The cross-over connection diode is formed regularly pause switch discharge circuit of capacitance charge between the delay electric capacity outfan of capacitance-resistance integral delay circuit and audio power amplifier circuit outfan, the output signal of utilizing sound circuit alarm duration of work to produce makes the power discharging transistor conducting, the pause switch discharge circuit of forming by diode and power discharging transistor makes regularly intermittent discharge of integrating capacitor, on electric capacity, produce long period sawtooth voltage at interval, and then the long at interval triggering signal at intermittence of automatic control triggering electric circuit generation time, make speech IC produce alarm signal intermittently, reach intermittently alarm purpose of the wet back of urine.When the sounding alarm, the integrating capacitor positive pole discharges over the ground by diode and power discharging transistor and is clamped on low level, and triggering signal disappears, and does not keep the voice signal continuation output of the speech IC of triggering mode to stop after finishing.After voice signal stopped, the clamping action of diode and power discharging transistor disappeared, and integrating capacitor is charged once more and postponed to trigger the sound circuit sounding, and so circulation has just produced the alarm signal that repeatedly has the certain hour interval.Capacitance-resistance integral delay circuit electric capacity outfan also connect one related with moist signal detection on-off circuit by diode or cmos analog switch or transistor is formed over the ground or the quick leadage circuit of electric capacity residual charge of low level point, the quick leadage circuit of this electric capacity residual charge is cut-off state when wet quick sensor probe detects moist signal, be conducting state during the free from dampness signal.The residual charge that makes alarm finish back electric capacity is released fast, even guarantee that at short notice alarm also can have stable time delay once more, and the electrical switch circuits for triggering is ended fast, reduces useless power consumption.Side at the loudspeaker wiring end is connected in series adjustable current-limiting resistance, makes the volume of alarm voice signal adjustable continuously.After wet diaper was replaced, the moist signal on the wet quick sensor probe disappeared thereupon, and the annunciator circuit automatically restores to initial static stand-by state.Because the circuit power consumption seldom, can use button cell to make that the annunciator volume reduces, weight saving, thereby annunciator is easy to carry.Adopt common a few components in the circuit, make annunciator simple in structure, be easy to make.Around the wet quick probe substrate of little hard, increases a soft stator of making by rubber, plastic materials, make probe positions be easy to fixing and can not press against the people, and mechanical strength is higher, use more convenient, the life-span is longer.
Diode is connected across between integrating capacitor positive pole and the voice power discharging transistor colelctor electrode in the above-mentioned pause switch discharge circuit, this diode cathode connects the integrating capacitor positive pole, and diode cathode connects the power discharging transistor colelctor electrode of audio power amplifier circuit and connects or connect positive source by adjustable resistance again by speaker.Electric capacity negative pole and the equal ground connection of voice power discharging transistor emitter stage.The pause switch discharge circuit intermittent discharge over the ground that integrating capacitor is formed by diode and voice power discharging transistor.
Above-mentioned moist signal detection on-off circuit can be made up of CMOS integrated gate circuit and resistance, and the CMOS integrated gate circuit is as being connected the input of RC capacitance-resistance integral delay circuit and the electrical switch between the positive source.If the sense switch circuit uses the one-level not gate then at its input positive source connect a pull-up resistor, when static state, make its input end in high level, outfan output low level.Be connected after wet quick probe between not gate input and the ground connected by urine, input becomes low level, the output high level, this high level is the deferred telegram capacity charge by the charging resistor of capacitance-resistance integral delay circuit, after integration postponed, the trigger circuit triggers speech IC of forming by the two-stage not gate produced the alarm signal.Replacements such as the also available NAND gate of described not gate, nor gate are as long as constitute non-logical relation.As with NAND gate, the parallel connection of nor gate input; Perhaps NAND gate is reserved an input and remaining input terminal is connect positive source after as control end; Perhaps nor gate reserve an input as control end after with remaining input terminal ground connection, all can realize non-logical relation.If moist signal detection on-off circuit use the parallel connection of one-level input with door, then connect a pull down resistor over the ground at its input, when static state, make its input end in low level, outfan output low level.Be connected and door input and positive source between wet quick probe by the urine connection after, become high level with the door input, the output high level, this high level is the deferred telegram capacity charge by the charging resistor of integral delay circuit, after integration postponed, the trigger circuit triggers speech IC of forming by one-level and door produced the alarm signal.
Diode of adjustable resistance two ends cross-over connection at the capacitance-resistance integral delay circuit, form the quick leadage circuit of integrating capacitor residual charge, the positive pole of diode connects the integrating capacitor positive pole, make the alarm residual charge of back on the integrating capacitor that finish be in low level not gate by this diode pair or discharge rapidly with the outfan of door, ready for postponing alarm next time.
The electrical switch of described moist signal detection on-off circuit, the quick leadage circuit of electric capacity residual charge, electrical switch circuits for triggering also can be made up of a CMOS four bidirectional analog switches.Constitute moist signal detection electronic switching circuit by bidirectional analog switch ES1 and pull down resistor.The termination power positive pole in the I/O end of bidirectional analog switch ES1 wherein, another termination RC capacitance-resistance integral delay circuit input, its control end is by pull down resistor ground connection.The electrode of wet quick sensor probe T links to each other with positive source, and another electrode connects or connect by resistance the control end of bidirectional analog switch ES1.Form the quick leadage circuit of electric capacity residual charge by two bidirectional analog switch ES3, ES4 and pull-up resistor, current-limiting resistance.The I/O end span of one of them bidirectional analog switch ES4 connect or an end be connected across the integrating capacitor two ends after current-limiting resistance is connected, its control end connects positive source by pull-up resistor; The I/O end span of another bidirectional analog switch ES3 is connected between the control end and ground of bidirectional analog switch ES4, the control end of its control termination bidirectional analog switch ES1.Adopt bidirectional analog switch ES2 to constitute the electrical switch circuits for triggering, the termination power positive pole in its I/O end, the other end links to each other with the speech IC trigger end, its control termination integrating capacitor positive pole.
The electrical switch of described moist signal detection on-off circuit, the quick leadage circuit of electric capacity residual charge also can be made up of two groups of single-pole double throw analog switches of a CMOS.A pair of normal opened contact and resistance by one group of single-pole double throw analog switch EW1 constitute moist signal detection on-off circuit.Termination power positive pole in a pair of normal opened contact of single-pole double throw analog switch EW1, another termination RC capacitance-resistance integral delay circuit input.Normally closed contact and the resistance of another group single-pole double throw analog switch EW2 are formed the quick leadage circuit of electric capacity residual charge.Wherein the normally closed contact cross-over connection of single-pole double throw analog switch EW2 or an end be connected across the integrating capacitor two ends after current-limiting resistance is connected.The internal logic circuit of two groups of single-pole double throw analog switches public forbids holding ground connection, and the public address control end is by pull down resistor ground connection.Wet electrode of quick sensor probe T links to each other with positive source, and another electrode connects or pass through the public address control end of resistance order dpdt double-pole double-throw (DPDT) analog switch.
Moist signal detection on-off circuit also can be made up of the electrical switch that discrete elements such as transistor as described below and resistance constitute.
The electrical switch of described moist signal detection on-off circuit is made up of NPN transistor VT2; The quick leadage circuit of described electric capacity residual charge is made up of diode VD2 or transistor VT3.Two isomrophous crystal pipe VT1, VT2 and resistance R 1, R3 constitute moist signal detection on-off circuit.The electrode of the quick sensor probe T of its being attacked by dampness links to each other with the base stage of transistor VT1 by resistance R 1 through lead, and another electrode links to each other with positive source through lead.The colelctor electrode of transistor VT1 connects positive source, and emitter stage is by resistance R 3 ground connection.The base stage of transistor VT2 connects the emitter stage of transistor VT1, and colelctor electrode connects positive source, and emitter stage connects RC capacitance-resistance integral delay circuit input.When the quick leadage circuit of electric capacity residual charge was made up of diode VD2, diode VD2 positive pole connect capacitor C 1 positive pole, and negative pole is by shared resistance R 3 ground connection; When the quick leadage circuit of electric capacity residual charge was made up of transistor VT3, its base stage was by common resistance R3 ground connection, and emitter stage connects capacitor C 1 positive pole, grounded collector.
Above-mentioned moist signal detection on-off circuit also can be made up of two different shaped transistor VT1, VT6 and resistance R 1, R2, R3, wherein is made of the electrical switch of moist signal detection on-off circuit PNP transistor VT6.The electrode of wet quick sensor probe T links to each other with transistor VT1 base stage by resistance R 1 through lead, and another electrode links to each other with positive source through lead.Transistor VT1 colelctor electrode connects positive source by resistance R 2, and emitter stage is by resistance R 3 ground connection.Transistor VT6 base stage connects transistor VT1 colelctor electrode, and emitter stage connects positive source, and colelctor electrode connects RC capacitance-resistance integral delay circuit input.The quick leadage circuit of described electric capacity residual charge still is made up of diode VD2 or transistor VT3.When the quick leadage circuit of electric capacity residual charge was made up of diode VD2, diode VD2 positive pole connect capacitor C 1 positive pole, and negative pole is by shared resistance R 3 ground connection; When the quick leadage circuit of electric capacity residual charge was made up of transistor VT3, its base stage was by common resistance R3 ground connection, and emitter stage connects capacitor C 1 positive pole, grounded collector.
Because the sensing detection electrical switch that no current passes through when being provided with static state in the above-mentioned solution between RC capacitance-resistance integral delay circuit input and positive source, only there is the leakage current of trace to pass through when static in the entire circuit, quiescent dissipation is reduced greatly, quiescent current only is several microamperes, pause switch discharge circuit and volume control circuit have been increased in addition in the circuit, even also very power saving when alarm is worked, so the employing button cell also can long time continuous working.It is reported that but device detects automatically delaying alarm behind the moist signal, more can automatically restore to monitoring state behind the changing babies' napkin.Owing to adopted intermittently alarm mode of self-timing, not only can in time remind the guardian more changing babies' napkin but can to the baby and around the people bring excessive interference.The annunciator volume of making is little, in light weight, easy to carry and use, simple in structure, low cost of manufacture, sonde configuration are more reasonable.
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.
Fig. 1 is made of the electrical switch and the electrical switch circuits for triggering of moist signal detection on-off circuit the CMOS not gate, form capacitance charge regularly pause switch discharge circuit and the quick leadage circuit of electric capacity residual charge by two diodes, and then form and it is reported the circuit theory diagrams of first embodiment of device.
Fig. 2 is made of the electrical switch of moist signal detection on-off circuit cmos nand gate, form capacitance charge regularly pause switch discharge circuit and the quick leadage circuit of electric capacity residual charge by two diodes, and then form and it is reported the circuit theory diagrams of second embodiment of device.
Fig. 3 is made of the electrical switch and the electrical switch circuits for triggering of moist signal detection on-off circuit CMOS and door, form capacitance charge regularly pause switch discharge circuit and the quick leadage circuit of electric capacity residual charge by two diodes, and then form and it is reported the circuit theory diagrams of the 3rd embodiment of device.
Fig. 4 is made of electrical switch, the quick leadage circuit of electric capacity residual charge, the electrical switch circuits for triggering of moist signal detection on-off circuit a CMOS four bidirectional analog switches, form regularly pause switch discharge circuit of capacitance charge by a diode, and then form and it is reported the circuit theory diagrams of the 4th embodiment of device.
Fig. 5 is made of the electrical switch and the quick leadage circuit of electric capacity residual charge of moist signal detection on-off circuit two groups of single-pole double throw analog switches of a CMOS, form regularly pause switch discharge circuit of capacitance charge by a diode, and then form and it is reported the circuit theory diagrams of the 5th embodiment of device.
Fig. 6 forms moist signal detection on-off circuit by the cascade of two isomrophous crystal pipes, back level transistor is as electrical switch, form capacitance charge regularly pause switch discharge circuit and the quick leadage circuit of electric capacity residual charge by two diodes, and then form and it is reported the circuit theory diagrams of the 6th embodiment of device.
Fig. 7 becomes moist signal detection on-off circuit by two different shaped transistor level joint groups, back level transistor is as electrical switch, form regularly pause switch discharge circuit of capacitance charge by a diode, form the quick leadage circuit of electric capacity residual charge by a transistor, and then form and it is reported the circuit theory diagrams of the 7th embodiment of device.
Fig. 8 be it is reported a concrete structure figure with the wet quick sensor probe of soft stator of device.
Fig. 9 be it is reported one of device with soft stator and a concrete structure figure of the wet quick sensor probe formed of a plurality of little probes of uniform distribution thereon.
This delayed type quick electronic monitoring annunciator that wets, regularly pause switch discharge circuit, the quick leadage circuit of electric capacity residual charge are formed mainly to produce circuit, audio power amplifier circuit, capacitance charge by power supply, wet quick sensor probe, moist signal detection on-off circuit, capacitance-resistance integral delay circuit, electrical switch circuits for triggering, voice signal.
Speech IC IC1 is by common mode and positive source V CCGND joins with ground, for example adopts level not keep the HL-9301B of triggering mode, power positive end V DDMeet positive source V CC, power supply negative terminal V SSGround connection GND, the vibration Resistor-Capacitor Unit is pressed the explanation of voice circuit and is connected, be that agitator input, outfan are OSC1 and OSC2 two termination oscillation resistance Rf, its voice signal outfan O/P links to each other with power discharging transistor VT5 base stage, transistor VT5 grounded emitter, colelctor electrode meets positive source V by speaker B and adjustable resistance RP2 CC, make the volume of speaker B adjustable.When adopting other form sound circuit, its vibration Resistor-Capacitor Unit all can connect by corresponding sound circuit explanation.
Can be connected in series on and off switch K on the battery E, so as when not use with power remove, also can not establish on and off switch.Capacitor C 3 also is connected in positive source V CCAnd between the ground GND,, prolong the service life of battery to reduce or the interchange internal resistance of power supply when eliminating circuit working.
The wet quick sensor probe T of following embodiment all can be by the close together and two conduction exploring electrodes [M1, M2] insulated from each other and the two flexible circuit conductors formations that are electrically connected respectively with it that are fixed on the insulated substrate.If little electric capacity in parallel can absorb the disturbing pulse from probe between wet quick probe two electrode connecting lines, can make circuit working more reliable.Adopt among each embodiment of CMOS integrated circuit, exploring electrode joins with CMOS integrated circuit input foot after preferably being connected in series one 10 kilo-ohms or bigger resistance R 1 again, and this resistance can reduce and can produce the accidental damage that is produced when electrostatic material contacts.
Following RC capacitance-resistance delay circuit is composed in series by resistance R 4, adjustable resistance RP1 and capacitor C 1, wherein adjustable resistance RP1 is connected with capacitor C 1 positive pole, contact is A, outfan as the capacitance-resistance delay circuit, the input of capacitance-resistance delay circuit is the non-adjustable resistance end that connects of resistance R 4, capacitor C 1 minus earth GND.
Among following each embodiment, a capacitance charge timing pause switch discharge circuit that is subjected to the control of audio power amplifier circuit output signal is all arranged between capacitance-resistance integral delay circuit electric capacity outfan and audio power amplifier circuit outfan, it is formed by diode VD1 with the shared power discharging transistor VT5 of audio power amplifier circuit, wherein to connect capacitance-resistance integral delay circuit outfan be capacitor C 1 positive pole to diode VD1 positive pole, and diode VD1 negative pole connects the power discharging transistor VT5 colelctor electrode of audio power amplifier circuit and connects or meet positive source V by adjustable resistance RP2 again by speaker B CCAfter probe electrode is connected by urine, power supply constantly raises its anodal current potential by resistance R 4 and RP1 to capacitor C 1 slow charging through the electrical switch of moist signal detection on-off circuit, after a period of time, make electrical switch circuits for triggering input voltage reach threshold level, by the electrical switch circuits for triggering, the work of triggering sound circuit produces voice alarm signal after amplifying.Simultaneously become electronegative potential at power discharging transistor VT5 conduction period colelctor electrode, diode VD1 forward conduction, capacitor C 1 is by diode VD1 and transistor VT5 discharge, and make capacitor C 1 positive pole be clamped at low level, it is following and end to make electrical switch circuits for triggering input voltage drop to threshold voltage simultaneously, output low level does not keep triggering mode because sound circuit adopts, and stops automatically after sound circuit finishes last note of melody.After voice stopped, transistor VT5 ended, and colelctor electrode recovers high potential, and diode VD1 is instead ended partially, and clamping action disappears, and is ready for the charging once more of capacitor C 1, finishes the time lag of first order alarm.If this moment is timely changing babies' napkin more not, the electrical switch output of then moist signal detection on-off circuit still is high level, this high level gives capacitor C 1 charging through resistance R P1 and R4 once more, this moment, sound circuit was not still worked, after a period of time postpones, produce high trigger signal once more, trigger sound circuit and produce the alarm signal, simultaneously diode VD1 conducting once more, capacitor C 1 is discharged once more and be clamped on low level, the bent whole automatic stop of sound circuit.So circulation till more changing babies' napkin or powered-down, thereby reaches intermittently alarm purpose.Since urine wet to the changing babies' napkin more during this period of time in, every interval certain hour just alarm once, thereby be unlikely to bring too much influence to the baby and the head of a family.Simultaneously the electric energy that consumes during the alarm is significantly reduced.
Fig. 1 is the circuit theory diagrams of first embodiment of the wet quick electronic information device of this utility model delayed type monitoring.
Not gate F1 and resistance R 7 constitutes moist signal detection electrical switch, the break-make of control RC capacitance-resistance delay circuit and power supply, so that delay input signal to be provided, and when guaranteeing static state in the RC capacitance-resistance delay circuit no current pass through.The electrode of wet quick sensor probe T links to each other with ground GND through lead, and another electrode connects or connects not gate F1 input by protective resistance R1.Not gate F1 input also meets positive source V by pull-up resistor R7 CC, the input of its output termination capacitance-resistance delay circuit.The electrical switch circuits for triggering are formed in not gate F2, F3 cascade.Wherein not gate F2 input and 1 anodal linking to each other of capacitor C, outfan NAND gate F3 input is continuous; The trigger end TRIG of the output termination speech IC IC1 of not gate F3.Diode VD2 is connected across the two ends of adjustable resistance RP1, and its positive pole connects capacitor C 1 positive pole, when newspaper static after the fast end, the remaining electric charge on the capacitor C 1 is released rapidly to the outfan of low level not gate F1 by resistance R 4.Diode VD1 positive pole connects the A point, negative pole connects transistor VT5 colelctor electrode, the pause switch discharge circuit of forming capacitor C 1, to produce timing triggering signal at intermittence by the control of speech IC IC1 output signal, by constantly discharging and recharging to capacitor C 1, on the trigger end TRIG of electrical switch circuits for triggering, produce regularly the triggering signal at intermittence, send intermittently alarm signal by speech IC IC1 at speech IC IC1.
The work of the wet quick electronic monitoring annunciator of this delayed type is to realize like this.Make owing to diaper is dry at ordinary times and be high-impedance state between exploring electrode, no current between not gate F1 input and the ground.Because not gate F1 input meets positive source V by pull-up resistor R7 CCAnd be high level, and outfan is a low level, makes integral delay circuit not have input signal, and promptly no current passes through, and speech IC IC1 does not produce the alarm signal.Because this moment, transistor VT5 ended, the colelctor electrode high potential instead ends diode VD1 partially.
After probe electrode is connected by urine, be low resistance state between exploring electrode and produce input signal, make not gate F1 input become low level by high level, outfan becomes high level by low level, this high level postpones input signal to export behind the certain hour by RC capacitance-resistance integral delay circuit, the input that makes not gate F2 reaches threshold voltage and becomes high level after certain hour postpones, anti-phase through not gate F2, F3, produce high trigger signal at not gate F3 outfan, trigger sound circuit, after amplifying, produce voice alarm signal.Conducting owing to transistor VT5 simultaneously makes colelctor electrode become electronegative potential, diode VD1 forward conduction, capacitor C 1 is by diode VD1 and transistor VT5 discharge, the input voltage of not gate F2 is dropped to below the threshold voltage, become low level by high level, not gate F3 output low level does not keep triggering mode because sound circuit adopts, and stops automatically after sound circuit finishes last note.After voice stopped, transistor VT5 ended, and colelctor electrode recovers high potential, and diode VD1 is instead ended partially, and is ready for the charging once more of capacitor C 1, finishes the time lag of first order alarm.If this moment is timely changing babies' napkin more not, then not gate F1 output still is high level, this high level gives capacitor C 1 charging through resistance R 4 and adjustable resistance RP1 again, this moment, sound circuit was not still worked, delayed back produces high trigger signal once more at not gate F3 outfan, triggers sound circuit sounding alarm once more.Diode VD1 conducting once more simultaneously makes not gate F2 incoming level reduce not gate F3 output low level.So circulation till changing babies' napkin more, thereby reaches intermittently alarm purpose.Urine wet to the changing babies' napkin more during this period of time in since every interval certain hour just alarm once therefore be unlikely to bring too much influence to the baby and the head of a family.Simultaneously the electric energy that consumes during the alarm is significantly reduced.
This circuit can also be made following change at least:
1. not gate F2, F3 in the electrical switch circuits for triggering are replaced with door Y2 with a transistor VT4 or with one.If use transistor VT4 then base stage connects capacitor C 1 positive pole, colelctor electrode meets positive source V CC, the trigger end TRIG that emitter stage meets speech IC IC1 sees Fig. 2.Use with door Y2 and then import termination capacitor C 1 positive pole, the trigger end TRIG of output termination speech IC IC1 sees Fig. 3.
2. moist signal detection electrical switch not gate F1 is used with door Y1 to replace, simultaneously its input is made corresponding change with wet being connected of quick probe, promptly pass through pull down resistor R8 ground connection, the electrode of the quick sensor probe T that wets and positive source V with door Y1 input CCLink to each other, the other end is by protective resistance R1 and link to each other with door Y1 input, guarantee with a door Y1 outfan be low level when static state, not gate F2, F3 with one with door Y2 replacement, with whole inputs of door total input of formation that connects together.See Fig. 3.
3. described not gate all replaces with NAND gate or nor gate, and its whole inputs connect together and form a total input, constitute non-logical relation, see Fig. 2.
Fig. 4 is the circuit theory diagrams of the 4th embodiment of the wet quick electronic information device of this utility model delayed type monitoring.
The electrical switch of described moist signal detection on-off circuit, the quick leadage circuit of electric capacity residual charge, electrical switch circuits for triggering are made up of a CMOS four bidirectional analog switches.Constitute moist signal detection electronic switching circuit by bidirectional analog switch ES1 and resistance R 8.The anodal V of the termination power in the I/O end of bidirectional analog switch ES1 wherein CC, another termination RC capacitance-resistance integral delay circuit input, its control end is by pull down resistor R8 ground connection.The electrode of wet quick sensor probe T and positive source V CCLink to each other, another electrode connects or connects by resistance R 1 control end of bidirectional analog switch ES1.Form the quick leadage circuit of electric capacity residual charge by bidirectional analog switch ES3, ES4 and resistance R 9, R5.Wherein the I/O end span of bidirectional analog switch ES4 connect or an end be connected across capacitor C 1 two ends after current-limiting resistance R5 connects, its control end meets positive source V by pull-up resistor R9 CCThe I/O end span of bidirectional analog switch ES3 is connected between the control end and ground GND of bidirectional analog switch ES4, the control end of its control termination bidirectional analog switch ES1.Adopt bidirectional analog switch ES2 to constitute the electrical switch circuits for triggering, the anodal V of the termination power in its I/O end CC, the other end links to each other with speech IC trigger end TRIG, its control termination capacitor C 1 positive pole.
When static state is waited for, be high-impedance state between probe electrode, pull down resistor R8 places low level with the control end of analog switch ES1 and ES3, and two analog switches all disconnect.Pull-up resistor R9 places high level with the control end of analog switch ES4, the closed conducting of analog switch.The control end of analog switch ES2 is low level because of ground connection, and switch disconnects.No current passes through in the RC capacitance-resistance delay circuit, and entire circuit is in the monitoring state.When probe detection behind the moist signal, the probe of the control end of analog switch ES1 and ES3 by low-resistance connects positive source and is placed in high level, the equal closed conducting of two analog switches.Because the conducting of analog switch ES3 makes the control end ground connection of analog switch ES4 become low level, analog switch ES4 becomes disconnection by closed conducting to be ended.Power supply charges to the capacitor C in the capacitance-resistance delay circuit 1 by analog switch ES1 simultaneously.After certain time delay, capacitor C 1 anodal current potential reaches analog switch ES2 control end threshold voltage, and the switch closure conducting triggers alarm.Intermittently the alarm circuit is also started working, and speaker sends intermittently alarm sound.The guardian hears the news more behind the changing babies' napkin, moist blackout, and the control end of analog switch ES1 and ES3 places low level again, and two analog switches all disconnect.Alarm finishes.The control end of analog switch ES4 recovers high level simultaneously, the closed conducting of analog switch.Residual charge on the capacitor C 1 is released over the ground fast by analog switch ES4, and entire circuit returns to initial static stand-by state rapidly.
Certainly, the also available transistor triggering mode commonly used of the electrical switch circuits for triggering among this embodiment or form by the CMOS integrated gate circuit.Resistance R 1 is an antistatic protection resistance.Unless capacitor C 1 capacity is big especially, generally can not use to prevent that big discharge current from damaging the current-limiting protection resistance R 5 of analog switch.
Fig. 5 is the circuit theory diagrams of the 5th embodiment of the wet quick electronic information device of this utility model delayed type monitoring.
The electrical switch of the moist signal detection on-off circuit in the present embodiment and the quick leadage circuit of electric capacity residual charge are made up of two groups of single-pole double throw analog switches of a CMOS.A pair of normal opened contact and pull down resistor R8 by one group of single-pole double throw analog switch EW1 constitute moist signal detection on-off circuit.The anodal V of a termination power in a pair of normal opened contact of single-pole double throw analog switch EW1 CC, another termination RC capacitance-resistance integral delay circuit input.Normally closed contact and the resistance R 5 of another group single-pole double throw analog switch EW2 are formed the quick leadage circuit of electric capacity residual charge.Wherein the normally closed contact cross-over connection of single-pole double throw analog switch EW2 or an end be connected across capacitor C 1 two ends after current-limiting resistance R5 connects.The internal logic circuit Logic of two groups of single-pole double throw analog switches public forbids holding INT ground connection, and public address control end ADD is by pull down resistor R8 ground connection.The electrode of wet quick sensor probe T and positive source V CCLink to each other, another electrode meets or passes through the public address control end ADD of protective resistance R1 order dpdt double-pole double-throw (DPDT) analog switch.
In this embodiment, publicly forbid holding ground connection to be low level, make the break-make of the height may command analog switch of public address control end level.When static state was waited for, R8 was low level owing to public address control termination pull down resistor, and analog switch EW1 normal opened contact disconnects, the normally closed contact closure of analog switch EW2.Capacitor C 1 is not recharged, and entire circuit is in the not monitor state of alarm.After probe was connected by urine, the public address control end connect positive source by probe, and current potential is upgraded to high level, switch motion.The normally closed contact of analog switch EW2 disconnects, simultaneously the normal opened contact closure of analog switch EW1.Power supply charges to the capacitor C in the RC capacitance-resistance integral delay circuit 1 by analog switch EW1, and postpones to trigger intermittently alarm signal of sound circuit generation.Behind the changing babies' napkin, the public address control end recovers low level, and analog switch also returns to initial on off state.Be the closed conducting of normally closed contact of analog switch EW2, the normal opened contact of analog switch EW1 disconnects simultaneously, and alarm finishes.Residual charge on the capacitor C 1 is released over the ground fast by analog switch EW2, and entire circuit returns to initial static stand-by state rapidly.
This circuit can be done following change, can realize above-mentioned functions equally:
The former positive source one end reconfiguration ground that connects of popping one's head in, the other end still connects the public address control end by resistance.The pull down resistor R8 reconfiguration positive source of ground connection becomes pull-up resistor.With the normally closed contact of analog switch EW1 and the normal opened contact place in circuit original position of analog switch EW2.Above-mentioned change still can remain on static state when waiting for analog switch EW1 disconnect, the closed conducting of analog switch EW2.The closed conducting of analog switch EW1, analog switch EW2 disconnected when urine wet alarm.
Fig. 6 is the circuit theory diagrams of the 6th embodiment of the wet quick electronic information device of this utility model delayed type monitoring.
An electrode in two conduction exploring electrodes of wet quick sensor probe T links to each other with transistor VT1 base stage by resistance R 1 through lead, and another electrode is through lead and positive source V CCLink to each other.In the RC capacitance-resistance integral delay circuit resistance R 4 and outfan after adjustable resistance RP1 connects with postpone electric capacity C1 positive pole and join, contact is A, capacitor C 1 minus earth GND.Regulate the charge rate that adjustable resistance RP1 can change capacitor C 1, thereby change the length of time delay.Transistor VT4 base stage connects the A point in the electrical switch circuits for triggering, and colelctor electrode meets positive source V CC, emitter stage links to each other with the trigger end TRIG of speech IC IC1.Speech IC IC1 is by common mode and positive source V CCGND joins with ground, and the vibration Resistor-Capacitor Unit is pressed the explanation of voice circuit and connected.Transistor VT5 grounded emitter, adjustable resistance RP2 connects with arbitrary end of speaker B, is connected on transistor VT5 colelctor electrode and positive source V CCBetween, constitute volume control circuit, to produce the alarm signal.The colelctor electrode of transistor VT1 meets positive source V in the described signal deteching circuit CC, emitter stage is by resistance R 3 ground connection.The base stage of transistor VT2 connects the emitter stage of transistor VT1, and colelctor electrode meets positive source V CC, emitter stage connects RC capacitance-resistance delay circuit input.Transistor VT1, VT2 and resistance R 1, R3 constitute moist signal detection electrical switch, the break-make of control RC capacitance-resistance delay circuit and power supply, so that delay input signal to be provided, and when guaranteeing static state in the RC capacitance-resistance delay circuit no current pass through.Diode VD2 positive pole connects the A point, and negative pole is by resistance R 3 ground connection, the remaining charge discharging resisting circuit of electric capacity when constituting capacitor C 1 static after alarm finishes.Diode VD1 positive pole connects the A point, negative pole connects power discharging transistor VT5 colelctor electrode, the pause switch discharge circuit of forming capacitor C 1, to produce timing triggering signal at intermittence by the control of speech IC IC1 output signal, by constantly discharging and recharging to capacitor C 1, on the trigger end TRIG of electrical switch circuits for triggering, produce regularly the triggering signal at intermittence, send intermittently alarm signal by speech IC IC1 at speech IC IC1.
The work of the wet quick electronic monitoring annunciator of this delayed type is to realize like this.Make owing to diaper is dry at ordinary times to be high-impedance state between exploring electrode, transistor VT1 base resistance R1 is ended by unsettled no bias current, makes integral delay circuit not have input signal, and speech IC IC1 does not produce the alarm signal.Because this moment, VT5 ended, the colelctor electrode high potential instead ends diode VD1 partially.After probe electrode is connected by urine, produce bias current and conducting in transistor VT1 base stage, produce input signal, on resistance R 3, produce voltage drop simultaneously.Because resistance R 3 upper end current potentials raise, diode VD2 instead ends partially, transistor VT2 conducting simultaneously.Power supply slowly charges to capacitor C 1 by transistor VT2, resistance R 4 and RP1, its anodal current potential is constantly raise, make transistor VT4 base stage produce bias current and conducting after delayed, on the trigger end TRIG of sound circuit IC1, produce high trigger signal, trigger sound circuit, after amplifying, produce voice alarm signal.Simultaneously become electronegative potential at power discharging transistor VT5 conduction period colelctor electrode, diode VD1 forward conduction, capacitor C 1 is by diode VD1 and power discharging transistor VT5 discharge, and it is following and end output low level to make the base stage input voltage of transistor VT4 drop to threshold voltage.Do not keep triggering mode owing to adopt, sound circuit works on, and stops automatically after finishing last note.After voice stopped, transistor VT5 ended, and colelctor electrode recovers high potential, and diode VD1 is instead ended partially, and is ready for the charging once more of capacitor C 1, finishes the time lag of first order alarm.If this moment is timely changing babies' napkin more not, then transistor VT1 output still is high level, this high level gives capacitor C 1 charging through resistance R P1 and R4 once more, this moment, sound circuit was not still worked, and produced high trigger signal once more after a period of time postpones, and triggered sound circuit and produced the alarm signal, diode VD1 conducting once more simultaneously, transistor VT4 base stage level is reduced and end, sound circuit is task again, bent whole automatic stop.So circulation till more changing babies' napkin or powered-down, thereby reaches intermittently alarm purpose.Since urine wet to the changing babies' napkin more during this period of time in, the automatic alarm of every interval certain hour once, thereby be unlikely to bring too much influence to the baby and the head of a family.Simultaneously the electric energy that consumes during the alarm is significantly reduced.Resistance R 4 can guarantee to transfer at resistance R P1 and hour still have certain time delay, can reduce power supply simultaneously during the alarm with this understanding again by transistor VT2, diode VD1, the transistor VT5 electric current to earth-return.
Arbitrary terminals serial connection adjustable resistance RP2 at speaker B makes the voice signal output volume adjustable, make the alarm signal can children under guardianship hear and unlikelyly produced loud noise and influence and have a rest or frightening the baby, and operating current also can reduce.
The effect of diode VD2 is after changing babies' napkin more finishes alarm in the circuit, and the residual charge on the capacitor C 1 is released fast by resistance R 3 and diode VD2, for alarm is once more prepared.Simultaneously transistor VT4 is ended rapidly, thereby reduced useless power consumption.After alarm finished, transistor VT1 ended, and no current passes through on the resistance R 3, and resistance R 3 upper ends are electronegative potential.Residual charge on the capacitor C 1 makes the conducting of diode VD2 positively biased at this moment, and releases fast over the ground by resistance R 3.
Fig. 7 is the circuit theory diagrams of the 7th embodiment of the wet quick electronic information device of this utility model delayed type monitoring.
The electrode of wet quick sensor probe T links to each other with transistor VT1 base stage by resistance R 1 through lead, and another electrode meets positive source V through lead CCElectrical switch circuits for triggering transistor VT4 base stage connects the A point, and colelctor electrode meets positive source V CC, emitter stage links to each other with the trigger end TRIG of speech IC IC1.Transistor VT1, VT6 and resistance R 1, R2, R3 constitute moist signal detection electrical switch, the break-make of control RC capacitance-resistance delay circuit and power supply, so that delay input signal to be provided, and when guaranteeing static state in the RC capacitance-resistance delay circuit no current pass through.Positive source V CCConnect transistor VT1 colelctor electrode by resistance R 2, transistor VT1 emitter stage is by resistance R 3 ground connection GND.Transistor VT6 base stage connects transistor VT1 colelctor electrode, and emitter stage meets positive source V CC, colelctor electrode connects the input of RC capacitance-resistance delay circuit.Transistor VT3 base stage is by resistance R 3 ground connection GND, and emitter stage connects A point, grounded collector, constitute the quick leadage circuit of capacitor C 1 remaining electric charge, during static after alarm finishes, the remaining electric charge on the capacitor C 1 released rapidly by transistor VT3, thereby transistor VT4 is ended rapidly.Diode VD1 positive pole connects the A point, negative pole connects transistor VT5 colelctor electrode, the pause switch discharge loop of forming capacitor C 1, to produce timing triggering signal at intermittence by the control of speech IC IC1 output signal, by constantly discharging and recharging to capacitor C 1, on the trigger end TRIG of electrical switch circuits for triggering, produce regularly the triggering signal at intermittence, send intermittently alarm signal by speech IC IC1 at speech IC IC1.Positive source V CCConnect with speaker B by adjustable resistance RP2, make the volume of speaker B adjustable.
When static state was waited for, transistor VT1 base resistance R1 was ended by unsettled no bias current, and transistor VT6 does not have the base stage bias current also to be ended, and circuit is in the monitoring state.After probe was connected by urine, transistor VT1 base stage had bias current and conducting, and resistance R 2, R3 have electric current to pass through to produce voltage drop.Resistance R 3 upper end current potentials raise, and transistor VT3 ends; Resistance R 2 lower end current potentials reduce transistor VT6 conducting.Power supply charges to capacitor C 1 by transistor VT6, resistance R 4 and adjustable resistance RP1, and postpones to trigger intermittently alarm signal of sound circuit generation through transistor VT4.More behind the changing babies' napkin, transistor VT1 base stage does not have bias current and ends once more, resistance R 2, R3 no current by and do not produce voltage drop.Resistance R 2 lower end current potentials are increased to positive source idiostatic, and transistor VT6 ends, and alarm finishes.Resistance R 3 upper end current potentials reduce, transistor VT3 conducting, and the remaining electric charge on the capacitor C 1 is released over the ground fast by transistor VT3, thereby transistor VT4 is ended rapidly.Circuit quickly recovers to initial static stand-by state.The residual charge leadage circuit also can adopt the mode of being made up of diode VD2 as shown in Figure 6.
Fig. 8 is a concrete structure figure of the wet quick sensor probe of the wet quick electronic information device of this utility model delayed type monitoring.
M1, M2 also have one deck laminar soft insulation stator P bigger than rigid insulation substrate N for being fixed on last two exploring electrodes of rigid insulation substrate N among the figure around linking to each other with rigid insulation substrate N among the wet quick sensor probe T.This stator P can be made by rubber or plastics etc.This structure can make probe positions be easy to fixing and can not press against the people, and mechanical strength is higher, use more convenient, the life-span is longer.Exploring electrode can be comb electrode or other material known and the shape of being made by conductive rubber.
Fig. 9 is another concrete structure figure of the wet quick sensor probe of the wet quick electronic information device of this utility model delayed type monitoring.
The quick sensor probe T of figure being attacked by dampness is made up of a plurality of little sensor probes [T1~Tn] that are evenly distributed on the laminar soft insulation stator P, close together and two conduction exploring electrodes [M1-n, M2-n] insulated from each other that each little sensor probe is fixed on the rigid insulation substrate N link to each other with the counter electrode on other little sensor probe is in parallel, and are electrically connected respectively with two flexible circuit conductors.The sensor probe detectivity of this structure is higher, and investigative range is bigger.This structure is applicable to that more the patient who is paralyzed in bed uses.

Claims (9)

1, the wet quick electronic monitoring annunciator of a kind of delayed type comprises that power supply, wet quick sensor probe, moist signal detection on-off circuit, capacitance-resistance integral delay circuit, electrical switch circuits for triggering, voice signal produce circuit and audio power amplifier circuit.Wherein voice signal generation circuit can adopt level not keep triggering mode or edge not to keep the speech IC of triggering mode: an end of adjustable resistance is connected with capacitor C 1 positive pole in the capacitance-resistance integral delay circuit, its contact connects the electrical switch circuits for triggering, capacitor C 1 negative pole connection circuit common reference ground, (hereinafter to be referred as ground) is characterized in that:
I), described moist signal detection on-off circuit electrical switch of being made up of CMOS integrated gate circuit or cmos analog switch or transistor is connected between capacitance-resistance integral delay circuit resistance input and the positive source, the break-make of control RC capacitance-resistance integral delay circuit and power supply, this electrical switch is only just exported high level, output low level during the free from dampness signal when wet quick sensor probe detects moist signal;
Ii), between capacitance-resistance integral delay circuit electric capacity outfan and audio power amplifier circuit outfan, also has a capacitance charge timing pause switch discharge circuit that is subjected to the control of audio power amplifier circuit output signal, described capacitance charge regularly pause switch discharge circuit is formed by diode VD1 with the shared power discharging transistor VT5 of audio power amplifier circuit, wherein to connect capacitance-resistance integral delay circuit outfan be capacitor C 1 positive pole to diode VD1 positive pole, and diode VD1 negative pole connects the power discharging transistor VT5 colelctor electrode of audio power amplifier circuit and connects or meet positive source V by adjustable resistance RP2 again by speaker B CC
Iii), also connect related with moist signal detection on-off circuit a quick leadage circuit of forming by diode or cmos analog switch or transistor of electric capacity residual charge to circuit common reference ground or low level point at capacitance-resistance integral delay circuit electric capacity outfan, the quick leadage circuit of this electric capacity residual charge is cut-off state when wet quick sensor probe detects moist signal, be conducting state during the free from dampness signal.
2, the wet quick electronic monitoring annunciator of delayed type according to claim 1 is characterized in that: the electrical switch of described moist signal detection on-off circuit by CMOS integrated gate circuit not gate or with door or or door form; The quick leadage circuit of described electric capacity residual charge is constituted by a diode, and this diode VD2 is connected across the two ends of capacitance-resistance integral delay circuit adjustable resistance RP1, and its positive pole connects capacitor C 1 positive pole.When adopting not gate to form electrical switch, constitute moist signal detection on-off circuit by not gate F1 and resistance R 7.The electrode of the quick sensor probe T of its being attacked by dampness links to each other with ground GND through lead, and another electrode connects or connects not gate F1 input by resistance R 1.Not gate F1 input also meets positive source V by pull-up resistor R7 CC, the RC capacitance-resistance integral delay circuit ground connection of outfan by being composed in series by resistance R 4 and adjustable resistance RP1 and capacitor C 1.When adopting with door composition electrical switch, by constituting moist signal detection on-off circuit with door Y1 and resistance R 8, connecting together with whole inputs of door forms a total input.The electrode of the quick sensor probe T of its being attacked by dampness is through lead and positive source V CCLink to each other, another electrode connects or connects the input with door Y1 by resistance R 1.With door Y1 input also by pull down resistor R8 ground connection GND, the RC capacitance-resistance integral delay circuit ground connection of outfan by being composed in series by resistance R 4 and adjustable resistance RP1 and capacitor C 1.It is above-mentioned that also available or door substitutes the whole ground connection of all the other idle inputs except that staying an input with door.Described electrical switch circuits for triggering can be made up of two-stage not gate or one-level and door.
3, the wet quick electronic monitoring annunciator of delayed type according to claim 2, it is characterized in that: described not gate all replaces with NAND gate or nor gate, its each input all combines and forms a total input, perhaps except that staying an input as the control end, the idle input of all the other of NAND gate termination positive source, the idle input end grounding of all the other of nor gate constitutes non-logical relation.Also can adopt other CMOS integrated gate circuit constitute non-or with or or logical relation.
4, the wet quick electronic monitoring annunciator of delayed type according to claim 1, it is characterized in that: the electrical switch of described moist signal detection on-off circuit is made up of CMOS bidirectional analog switch; The quick leadage circuit of described electric capacity residual charge also is made up of CMOS bidirectional analog switch; Described electricity also is made up of CMOS bidirectional analog switch in the switch triggering circuit.Constitute moist signal detection electronic switching circuit by bidirectional analog switch ES1 and resistance R 8.The anodal V of the termination power in the I/O end of bidirectional analog switch ES1 wherein CC, the RC capacitance-resistance integral delay circuit ground connection of the other end by being composed in series by resistance R 4 and adjustable resistance RP1 and capacitor C 1, its control end is by pull down resistor R8 ground connection.The electrode of wet quick sensor probe T and positive source V CCLink to each other, another electrode connects or connects by resistance R 1 control end of bidirectional analog switch ES1.Form the quick leadage circuit of electric capacity residual charge by bidirectional analog switch ES3, ES4 and resistance R 9, R5.Wherein the I/O end span of bidirectional analog switch ES4 connect or an end be connected across capacitor C 1 two ends after current-limiting resistance R5 connects, its control end meets positive source V by pull-up resistor R9 CCThe I/O end span of bidirectional analog switch ES3 is connected between the control end and ground GND of bidirectional analog switch ES4, the control end of its control termination bidirectional analog switch ES1.Adopt bidirectional analog switch ES2 to constitute the electrical switch circuits for triggering, the anodal V of the termination power in its I/O end CC, the other end links to each other with speech IC trigger end TRIG, its control termination capacitor C 1 positive pole.
5, the wet quick electronic monitoring annunciator of delayed type according to claim 1, it is characterized in that: the electrical switch of described moist signal detection on-off circuit is made up of CMOS single-pole double throw analog switch; The quick leadage circuit of described electric capacity residual charge also is made up of CMOS single-pole double throw analog switch.A pair of normal opened contact and resistance R 8 by one group of single-pole double throw analog switch EW1 constitute moist signal detection on-off circuit.The anodal V of a termination power in a pair of normal opened contact of single-pole double throw analog switch EW1 CC, the RC capacitance-resistance integral delay circuit ground connection of the other end by being composed in series by resistance R 4 and adjustable resistance RP1 and capacitor C 1.Normally closed contact and the resistance R 5 of another group single-pole double throw analog switch EW2 are formed the quick leadage circuit of electric capacity residual charge.Wherein the normally closed contact cross-over connection of single-pole double throw analog switch EW2 or an end be connected across capacitor C 1 two ends after current-limiting resistance R5 connects.The internal logic circuit Logic of two groups of single-pole double throw analog switches public forbids holding INT ground connection, and public address control end ADD is by pull down resistor R8 ground connection.The electrode of wet quick sensor probe T and positive source V CCLink to each other, another electrode meets or passes through the public address control end ADD of resistance R 1 order dpdt double-pole double-throw (DPDT) analog switch.
6, the wet quick electronic monitoring annunciator of delayed type according to claim 1, it is characterized in that: the electrical switch of described moist signal detection on-off circuit is made up of transistor VT2; The quick leadage circuit of described electric capacity residual charge is made up of diode VD2 or transistor VT3.Transistor VT1, VT2 and resistance R 1, R3 constitute moist signal detection on-off circuit.The electrode of the quick sensor probe T of its being attacked by dampness links to each other with the base stage of transistor VT1 by resistance R 1 through lead, and another electrode is through lead and positive source V CCLink to each other.The colelctor electrode of transistor VT1 meets positive source V CC, emitter stage is by resistance R 3 ground connection.The base stage of transistor VT2 connects the emitter stage of transistor VT1, and colelctor electrode meets positive source V CC, the RC capacitance-resistance integral delay circuit ground connection of emitter stage by being composed in series by resistance R 4 and adjustable resistance RP1 and capacitor C 1.When the quick leadage circuit of electric capacity residual charge was made up of diode VD2, diode VD2 positive pole connect capacitor C 1 positive pole, and negative pole is by shared resistance R 3 ground connection; When the quick leadage circuit of electric capacity residual charge was made up of transistor VT3, its base stage was by common resistance R3 ground connection, and emitter stage connects capacitor C 1 positive pole, grounded collector.
7, the wet quick electronic monitoring annunciator of delayed type according to claim 1, it is characterized in that: the electrical switch of described moist signal detection on-off circuit is made up of transistor VT6; The quick leadage circuit of described electric capacity residual charge is made up of diode VD2 or transistor VT3.Corresponding moist signal detection on-off circuit is made up of transistor VT1, VT6 and resistance R 1, R2, R3.The electrode of wet quick sensor probe T links to each other with transistor VT1 base stage by resistance R 1 through lead, and another electrode is through lead and positive source V CCLink to each other.Transistor VT1 colelctor electrode meets positive source V by resistance R 2 CC, emitter stage is by resistance R 3 ground connection GND.Transistor VT6 base stage connects transistor VT1 colelctor electrode, and emitter stage meets positive source V CC, the RC capacitance-resistance integral delay circuit ground connection of colelctor electrode by being composed in series by resistance R 4 and adjustable resistance RP1 and capacitor C 1.When the quick leadage circuit of electric capacity residual charge was made up of diode VD2, diode VD2 positive pole connect capacitor C 1 positive pole, and negative pole is by shared resistance R 3 ground connection; When the quick leadage circuit of electric capacity residual charge was made up of transistor VT3, its base stage was by common resistance R3 ground connection, and emitter stage connects capacitor C 1 positive pole, grounded collector.
8, the wet quick electronic monitoring annunciator of delayed type according to claim 1 is characterized in that: also have one deck laminar soft insulation stator P bigger than rigid insulation substrate N around linking to each other with the rigid insulation substrate N that has exploring electrode among the described wet quick sensor probe T.
9, the wet quick electronic monitoring annunciator of delayed type according to claim 1, it is characterized in that: described wet quick sensor probe T is made up of a plurality of little sensor probes [T1~Tn] that are evenly distributed on the laminar soft insulation stator P, each little sensor probe is formed by being fixed on close together on the insulated substrate N and two conduction exploring electrodes [M1-n, M2-n] insulated from each other, each little sensor probe links to each other with the counter electrode on other little sensor probe is in parallel, and is electrically connected respectively with two flexible circuit conductors.
CN 99250408 1999-11-29 1999-11-29 Delay-type wet-sensitive electronic monitoring alarm Expired - Fee Related CN2405564Y (en)

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Application Number Priority Date Filing Date Title
CN 99250408 CN2405564Y (en) 1999-11-29 1999-11-29 Delay-type wet-sensitive electronic monitoring alarm

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Application Number Priority Date Filing Date Title
CN 99250408 CN2405564Y (en) 1999-11-29 1999-11-29 Delay-type wet-sensitive electronic monitoring alarm

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103445913A (en) * 2013-09-22 2013-12-18 周云侠 Baby urine alarm
CN110558935A (en) * 2019-08-05 2019-12-13 南京阿尔法医学有限公司 Front-end protection circuit and method of medical local anesthesia plane monitor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103445913A (en) * 2013-09-22 2013-12-18 周云侠 Baby urine alarm
CN110558935A (en) * 2019-08-05 2019-12-13 南京阿尔法医学有限公司 Front-end protection circuit and method of medical local anesthesia plane monitor

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