CN2343636Y

CN2343636Y - Multifunctional baby-nursing alarm

Info

Publication number: CN2343636Y
Application number: CN 98245011
Authority: CN
Inventors: 项大川
Original assignee: 徐秀萍
Priority date: 1998-10-10
Filing date: 1998-10-10
Publication date: 1999-10-13
Anticipated expiration: 2008-10-10

Abstract

The utility model relates to a multifunctional baby-nursing alarm. The output terminal of a first humidity comparison circuit in a control circuit is directly connected with the input terminal of a fourth voltage comparison circuit. The output terminals of a second higher temperature comparison circuit and a third lower temperature comparison circuit are connected together and are connected with the input terminal of the fourth voltage comparison circuit by a switch S2. The output terminal of the fourth voltage comparison circuit is connected with the input terminal of a fifth sounding alarm circuit. The utility model adopts the integrated circuit of an operational amplifier comparator, so the utility model has the advantages of simple structure, small size, sensitive and reliable alarm. The utility model can respectively send out acoustic-optical alarm to indicate over-high or over-low temperature and urine in a baby's sleep.

Description

Multifunctional infant nursing alarm

The utility model relates to a kind of infant and nurses warning device, especially belongs to the infant and suffers from cold, generates heat, urinates alarm when wet.

Modern society; concerning great majority just are parental young man; all will deal with busy work daytime; the amateurish infant of intensive care oneself again; particularly worry that child suffers from cold or is heated in bed evening, worry the urine wet wash again; busy like this one day father and mother; it is not stable often to sleep evening, and energy can not get normal recovery, and the time one is long; certainly will influence physical and mental health; take measures so press for, though some urine-wet alarm devices and catching cold alarm appear at present, because function is less; still can not solve whole issue, be 95219862.2 as the patent No.; 95222911.0 just belong to this type of alarm.Therefore, concerning vast young father and mother, press for a kind of multiple functional infant and nurse alarm, do father and mother's worry with solution.

The purpose of this utility model, provide a kind of have suffer from cold, be heated, urinate wet multiple warning function, the infant who possesses the dual warning indicating device of acousto-optic simultaneously nurses alarm.

Technical solution adopted in the utility model is: multifunctional infant nursing alarm comprises shell and inner circuit board thereof, it is characterized in that the control circuit on the described circuit board comprises humidity comparator circuit I, the temperature height ratio is than the circuit II, the low comparator circuit III of temperature, the voltage comparator circuit IV, audible alarm circuit V and power circuit VI, wherein the output terminal of humidity comparator circuit I directly links to each other with the input end of voltage comparator circuit IV, the temperature height ratio is than the circuit II, the output terminal of the low comparator circuit III of temperature connects altogether and links to each other with the input end of voltage comparator circuit IV by switch S 2, and the output terminal of voltage comparator circuit IV links to each other with the input end of audible alarm circuit V.

Advantage of the present utility model is, its circuit has been selected low-voltage amplifier comparer integrated circuit and music integrated circuit for use, it is simple in structure that it is had, volume is little, can under the low supply voltage power supply, work, performance is safe and reliable, can realize that the infant suffers from cold, be heated and the low fever, the dual alarm of acousto-optic that urine is wet, and chimes of doom is a bent interesting to listen to song, useful infant's physical and mental health, make young father and mother can feel at ease evening to sleep, needn't worry, greatly alleviated many worries that young father and mother nurse child, also reduced simultaneously the infant and caused the generation of catching a cold owing to suffer from cold, during sick fever, cover too tightly as quilt, the unable quilt of pushing aside of infant in the disease, the generation that causes Gao Re and then produce convulsions tic phenomenon, and the wet diaper dermatitis that causes of in time being handled of urine, scrotum is wet the generation of disease such as examines, thereby grows with helping infantile health.

Description of drawings:

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the control circuit theory diagram of the utility model embodiment.

Fig. 3 is the circuit theory diagrams of the control circuit of the utility model embodiment.

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing:

As shown in Figure 1, wherein 1 is humidity sensor (RX1), being carved with gate-shaped electrode by the double-sided printed-circuit board surface makes, 2 is temperature sensor, adopt thermistor RT1,3 is the connection lead of sensor, and the one tail end is connected with three core coax plugs, 4 is shell, 5 is socket, and 6 are the wet pilot lamp of urine, and 7 is warm high pilot lamp, 8 is the low pilot lamp of temperature, 9 is temperature detect switch S2, and 10 is power switch S1, and 11 for Jia not, 12 for the battery compartment lid, wherein is provided with a control circuit board (not shown) in housing.

As shown in Figure 2, control circuit on the circuit board comprises that humidity comparator circuit I, warm height ratio are than circuit II, the low comparator circuit III of temperature, voltage comparator circuit IV, audible alarm circuit V and power circuit VI, wherein the output terminal of humidity comparator circuit I directly links to each other with the input end of voltage comparator circuit IV, the temperature height ratio connects altogether than circuit II, the warm output terminal that hangs down the comparator circuit III and links to each other with the input end of voltage comparator circuit IV by switch S 2, and the output terminal of voltage comparator circuit IV links to each other with the input end of audible alarm circuit V.

As shown in Figure 3, described humidity comparator circuit I is in-phase input end and the resistance R 1 by comparison amplifier N1, the joining of humidity sensor RX1 (by attachment plug seat X1-1) links to each other, the inverting input of comparison amplifier N1 and resistance R 2, the joining of R3 links to each other, resistance R 1, the other end of R2 links to each other with a end of power switch S1, the other end of humidity sensor RX1, the other end of resistance R 3 links to each other with power supply G negative pole, the negative pole of the output terminal sending and receiving optical diode VD1 of comparison amplifier, the anode of light emitting diode VD1 and resistance R 6, the joining of R7 is continuous to be formed;

Described temperature height ratio is in-phase input end and potentiometer RP1 by comparison amplifier N2 than the circuit II, resistance R 5 joinings link to each other, the other end of potentiometer RP1 links to each other with resistance R 4, the other end of resistance R 5 links to each other with temperature sensor RT1 by attachment plug seat X1-2, the inverting input of comparison amplifier N2 and resistance R 2, the joining of R3 links to each other, the other end of resistance R 4 links to each other with a end of power switch S1, the other end of temperature sensor RT1 links to each other with power supply G negative pole, the negative pole of comparison amplifier N2 output terminal sending and receiving optical diode VD2, the positive plate of light emitting diode VD2 links to each other with a of temperature switch S2 end, b end and the resistance R 6 of temperature switch S2, the joining of R7 is continuous to be formed;

The low comparator circuit III of described temperature is that the in-phase input end by comparison amplifier N3 links to each other with the joining of resistance R 2, R3, the inverting input of comparison amplifier N3 links to each other with the joining of resistance R 5, temperature sensor RT1 (by attachment plug seat X1-2), the output terminal of comparison amplifier N3 links to each other with the negative pole of light emitting diode VD3, a end of the positive pole of light emitting diode VD3 and temperature switch S2 link to each other form;

Described voltage comparator circuit IV is that the in-phase input end by comparison amplifier N4 links to each other with the joining of resistance R 7, R8, resistance R 7 links to each other with resistance R 6, the inverting input of comparison amplifier N4 links to each other with the joining of resistance R 2, R3, the a end of the other end of resistance R 6, comparison amplifier N4 links to each other with a end of power switch S1, the b end of comparison amplifier N4, the other end of resistance R 8 link to each other with power supply G negative pole, and the negative terminal of the output termination music integrated circuit sheet N5 of comparison amplifier N4 is formed; Described audible alarm circuit V is to be held with a of power switch S1 by the anode of music integrated circuit sheet N5 to link to each other, the negative terminal of music integrated circuit N5 links to each other with the output terminal of N4, the output terminal b of music integrated circuit N5 links to each other with the end of piezo B, the other end of piezo B link to each other with the negative terminal of music integrated circuit N5 form; Described power circuit VI is by after the two batteries G series connection, and its positive terminal links to each other with the b end of power switch S1, and a of power switch S1 holds and links to each other with the anode of power filtering capacitor C1, the negative terminal of battery G link to each other with the negative terminal of power filtering capacitor C1 form;

Above-mentioned humidity sensor RX1, temperature sensor RT1 preferably are connected with circuit board by connecting lead (3) as shown in Figure 1, this connection lead (3) is that two arranged side by side arrangements connect together, length is drawn separately on request, every inner core is the duplex wire of multiply mutually insulated, its tail end is connected on one the three core coax plug, plug inserts the PCB socket hole (5) that is arranged on the shell, and sensor RX1, RT1 are linked to each other with circuit.

Comparison amplifier N1, N2 in above-mentioned, all desirable conventional four computing comparison amplifier integrated circuit that use of N3, N4 such as LM3302 etc.

The utility model principle of work is as follows: when the power switch S1 of this alarm is closed when connecting circuit power, if when using as urine-wet alarm, owing to the phase inverter input terminal voltage of N1 is R2, R3 dividing potential drop, be made as 1/2G; If RX1 detects when dry diaper, the resistance infinity, the partial pressure value of it and R1 is just greater than 1/2G, because in-phase input end voltage is greater than inverting input voltage, N1 output terminal output noble potential, VD1 ends, this moment, the inverting input voltage of voltage comparator N4 was also taken from R2, R3 partial pressure value, and its in-phase input end voltage is R6, R7, R8 dividing potential drop, be made as greater than 1/2G, N4 output terminal output noble potential, N5 passes through by no current in the audible alarm circuit V, so the happy signal output of N5 output terminal b tone-off, piezo B is mute.Its resistance is about tens kilohms when wetting diaper otherwise the RX1 detection probe touches, the partial pressure value of RX1 and R1 is less than inverting input, N1 exports electronegative potential, the VD1 conducting is luminous, VD1 positive terminal and the R6 intersection point C of place terminal voltage are clamped on the current potential of VD1 pressure drop, this voltage is the in-phase input end voltage of N4 through resistance R 7, R8 dividing potential drop, its value is less than inverting input voltage 1/2G, N4 output terminal output electronegative potential, N5 conducting in the audible alarm circuit V, its output terminal b outputting music signal promote piezo B music alarm sound take place.

When this alarm while is reported to the police use as thermometric, be divided into temperature and hang down and temperature height control warning warm low control: can be when temperature be lower than setting value (temperature of suffering from cold: be located at about 29 ℃), circuit sends the sound and light alarm prompting.The high control of temperature: can be when temperature be higher than setting value (heating temperature: be located at about 37 ℃), circuit sends the sound and light alarm prompting.During temperature measurement circuit work, S2 is in closure state with temperature switch, the inverting input voltage of N2 and the in-phase input end voltage of N3 are by resistance R 2, the R3 dividing potential drop is 1/2G, the normal phase input end voltage of N2 and the inverting input voltage of N3 are respectively by resistance R 4, R5, potentiometer RP1, the potential-divider network dividing potential drop that thermistor RT1 (temperature probe) forms obtains, adjust potentiometer RP1 resistance and set warm high alarm threshold to 37 ℃ of setting values, adjust the resistance of resistance R 5 and set the low alarm threshold of temperature to 29 ℃ of setting values, in 29 ℃～37 ℃ scopes is the normal working temperature scope, and the in-phase input end voltage of N2 is greater than inverting input voltage at this moment.N2 output terminal output noble potential, light emitting diode VD2 is in cut-off state, the in-phase input end voltage of N3 is also greater than its inverting input voltage, N3 output terminal output noble potential, light emitting diode VD3 is in cut-off state, thereby the normal phase input end voltage that makes N4 is higher than its inverting input voltage, N4 output terminal output noble potential, and audible alarm circuit V is by the output of alarm free sound.If temperature exceeds normal range, because thermistor RT1 is a temperature probe, its resistance of temperature change is also along with change, then potential-divider network each point current potential is also along with change, its internal resistance diminishes when RT1 heats (temperature raises in the quilt), when temperature surpasses 37 ℃ of setting values, the in-phase input end voltage transition of N2 is less than inverting input voltage, N2 output terminal output this moment electronegative potential, light emitting diode VD2 is by by becoming conducting and luminous, the normal phase input end voltage of N4 then changes into less than its inverting input voltage, N4 output terminal output electronegative potential, audible alarm circuit V is by sending chimes of doom by changing conduction into, otherwise when RT1 suffer from cold (quilt pedaled out after) in it resistive big, be low to moderate when setting value (29 ℃) is following as temperature, the inverting input voltage transition of N3 is for being higher than its in-phase input end voltage, N3 output terminal output electronegative potential, light emitting diode VD3 is by by becoming conducting and luminous, the normal phase input end voltage of N4 then changes into less than its inverting input voltage, and the audible alarm circuit V is by sending chimes of doom by changing conduction into.

Claims

1. a multifunctional infant is nursed alarm, comprise shell and inner circuit board thereof, it is characterized in that the control circuit on the described circuit board comprises humidity comparator circuit I, the temperature height ratio is than the circuit II, the low comparator circuit III of temperature, the voltage comparator circuit IV, audible alarm circuit V and power circuit VI, wherein the output terminal of humidity comparator circuit I directly links to each other with the input end of voltage comparator circuit IV, the temperature height ratio is than the circuit II, the output terminal of the low comparator circuit III of temperature connects altogether and links to each other with the input end of voltage comparator circuit IV by switch S 2, and the output terminal of voltage comparator circuit IV links to each other with the input end of audible alarm circuit V.

2. multifunctional infant nursing alarm according to claim 1, it is characterized in that: humidity comparator circuit I is by the in-phase input end of comparison amplifier N1 and resistance R 1, the joining of humidity sensor RX1 (by attachment plug seat X1-1) links to each other, the inverting input of comparison amplifier N1 and resistance R 2, the joining of R3 links to each other, resistance R 1, the other end of R2 links to each other with a end of power switch S1, the other end of humidity sensor RX1, the other end of resistance R 3 links to each other with power supply G negative pole, the negative pole of the output terminal sending and receiving optical diode VD1 of comparison amplifier, the anode of light emitting diode VD1 and resistance R 6, the joining of R7 is continuous to be formed.

3. multifunctional infant nursing alarm according to claim 1, it is characterized in that: warm height ratio is in-phase input end and potentiometer RP1 by comparison amplifier N2 than the circuit II, resistance R 5 joinings link to each other, the other end of potentiometer RP1 links to each other with resistance R 4, the other end of resistance R 5 links to each other with temperature sensor RT1 by attachment plug seat X1-2, the inverting input of comparison amplifier N2 and resistance R 2, the joining of R3 links to each other, the other end of resistance R 4 links to each other with a end of power switch S1, the other end of temperature sensor RT1 links to each other with power supply G negative pole, the negative pole of comparison amplifier N2 output terminal sending and receiving optical diode VD2, the positive plate of light emitting diode VD2 links to each other with a of temperature switch S2 end, b end and the resistance R 6 of temperature switch S2, the joining of R7 is continuous to be formed.

4. multifunctional infant nursing alarm according to claim 1, it is characterized in that: the low comparator circuit III of temperature is that the in-phase input end by comparison amplifier N3 links to each other with the joining of resistance R 2, R3, the inverting input of comparison amplifier N3 links to each other with the joining of resistance R 5, temperature sensor RT1 (by attachment plug seat X1-2), the output terminal of comparison amplifier N3 links to each other with the negative pole of light emitting diode VD3, a end of the positive pole of light emitting diode VD3 and temperature switch S2 link to each other form.

5. multifunctional infant nursing alarm according to claim 1, it is characterized in that: the voltage comparator circuit IV is by the in-phase input end of comparison amplifier N4 and resistance R 7, the joining of R8 links to each other, resistance R 7 links to each other with resistance R 6, the inverting input of comparison amplifier N4 and resistance R 2, the joining of R3 links to each other, the other end of resistance R 6, the a end of comparison amplifier N4 links to each other with a end of power switch S1, the b end of comparison amplifier N4, the other end of resistance R 8 links to each other with power supply G negative pole, and the negative terminal of the output termination music integrated circuit sheet N5 of comparison amplifier N4 is formed.

6. multifunctional infant nursing alarm according to claim 1, it is characterized in that: audible alarm circuit V is held with a of power switch S1 by the anode of music integrated circuit sheet N5 to link to each other, the negative terminal of music integrated circuit N5 links to each other with the output terminal of N4, the output terminal b of music integrated circuit N5 links to each other with the end of piezo B, the other end of piezo B link to each other with the negative terminal of music integrated circuit N5 form.

7. as the described multifunctional infant nursing of claim 2 to 4 alarm, it is characterized in that described humidity sensor RX1, temperature sensor RT1 connect lead (3) by one and be connected with circuit board, this connection lead (3) is that two arranged side by side arrangements connect together, length is drawn separately on request, every inner core is the duplex wire of multiply mutually insulated, its tail end is connected on one the three core coax plug, plug inserts the PCB socket hole (5) that is arranged on the shell, and sensor RX1, RT1 are linked to each other with circuit.