CN85205803U - Catching cold alarm for sleeping baby - Google Patents
Catching cold alarm for sleeping baby Download PDFInfo
- Publication number
- CN85205803U CN85205803U CN 85205803 CN85205803U CN85205803U CN 85205803 U CN85205803 U CN 85205803U CN 85205803 CN85205803 CN 85205803 CN 85205803 U CN85205803 U CN 85205803U CN 85205803 U CN85205803 U CN 85205803U
- Authority
- CN
- China
- Prior art keywords
- circuit
- temperature
- alarm
- quilt
- catching cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The utility model discloses a catching cold alarm for a sleeping baby. A body like kicking and lifting a quilt during sleeping so that the body easily catches cold. So the health growing of the body is not only affected and also the spirit burden and economic burden of a minder is exacerbated. The catching cold alarm for a sleeping baby is a device which automatically alarms and calls the minder. The catching cold alarm for a sleeping baby comprises a temperature sensing circuit, an analog-digital conversion circuit, a pulse signal circuit, an audio oscillation circuit, a low putting circuit and a speaker. When the body kicks and lifts the quilt, the catching cold alarm for a sleeping baby can alarm sound and call the minder to reset the quilt in order to prevent the body from catching cold in 25 to 60 seconds.
Description
The utility model relates to a kind of employing
Children's's body surface interlayer temperature alarming device that stream source, transistor capacitance, resistance (fixed resistance and thermistor) etc. constitute, the warning that quilt is suffered from cold after playing and raising when being used for children's and sleeping is called.
Children's particularly child is different with adult's body temperature, likes playing when sleep and lifts quilt, and after quilt was played and lifted, body surface interlayer temperature reduced, children's oneself can not build quilt and reset.Cause suffering from cold flu, be difficult to cure season in severe winter especially in short-term again.This phenomenon is general and often take place, still do not have good plan and tackle, and influence growing up healthy and sound of children's, gives the treatment people inconvenience, increases the weight of young father and mother's spirit and financial burden.
The conventional approach that addresses this problem at present is that the quilt that children's sleeps is wrapped or compacting, be exactly to take care of people's carefulness often to keep an eye in addition, when kicked open quilt and unclear as for children's, but expended and take care of the very big energy of people, especially can not get fine rest night, treatment people.When having this type of warning device, morning session Games do not go on the market.
The purpose of this utility model, provide a kind of when children's sleeps, children's with quilt play raise after, when the interlayer temperature of body surface is reduced to certain value, can send audible alarm automatically, call the treatment people quilt to be built again the device that resets, prevent children's's flu of suffering from cold, grow up and reduce the burden of taking care of the people in order to child health.
The utility model is made of temperature sensing circuit and acoustics circuit two large divisions, and as the thermistor and the lead thereof of temperature sensing, make in striped cloth, lie in the pit of the stomach place of children's's chest, lead is introduced control circuit.Children's is when sleep, and the temperature of building quilt is 29 °～32 ℃, and this moment, thermistor was certain certain value, no signal output.When children's play lift quilt after, body surface interlayer temperature reduces, the resistance of thermistor increases, and utilizes this variation and the voltage that produces changes and converts thereof into switching signal, conducting acoustics circuit, sends audible alarm, calls and take care of the people and quilt is built resetted.
Concrete structure of the present utility model is: the block scheme of whole device and circuit theory diagrams as depicted in figs. 1 and 2, by thermistor R
tWith
The stream transistor T
1The temperature sensor of forming is built and is played when lifting two states at quilt, and a temperature difference is arranged.Utilize voltage signal that difference variation produces, become switching signal, make pulse circuit by analog to digital converter, the control audio oscillatory circuit, the promotion loudspeaker send the sound after low putting.
The utility model can adopt following four kinds of modes as the temperature sensing sample circuit:
One bridge diagram
It is composed in series by three fixed resistances and a thermistor closure, as shown in Figure 3, establishes R
1=R
2=R
3,, make R when certain temperature value (being 26 ℃)
t=R
2The time, bridge balance, U
0=0, no signal output, and during temperature variation, R
tValue becomes with temperature, R
t≠ R
2, then electric bridge imbalance, U
0≠ 0, signal output is arranged, make control signal, connect acoustics circuit with this.
Two-transistor P, N tie circuit
It is composed in series by fixed resistance R and crystal diode D, as shown in Figure 4.When temperature variation, diode both end voltage U
0Be worth corresponding change.Utilize this changing value as output voltage U
0, control and conducting acoustics circuit.
Three adopt
The stream source cooperates circuit with thermistor.
Circuit structure as shown in Figure 5,
Stream source I
SBe connected to thermistor R
tTwo ends, its voltage are U
0
U
0=U
Rt=I
SR
t
When temperature variation, the corresponding change of thermosensitive resistance, both end voltage becomes thereupon, and this voltage quantities is made control signal, thereby connects acoustics circuit.
Four bleeder circuits
It is in series by fixed resistance and thermistor, as shown in Figure 6.Output voltage
U
0=U
Rc=(ER
t)/(R+R
t)
When temperature variation, R
tValue changes correspondingly both end voltage variation, makes control signal, connects acoustics circuit with this.
The concrete course of work of the utility model circuit theory diagrams as shown in Figure 2 is as follows:
R
1, D
1, D
2, T
0Form mu balanced circuit, C
5Make power filter, when supply voltage is reduced to 1.7V by 3V, T
0The emitter output voltage stabilization is at 1.2V, supply T
1～T
7Power supply.
T
1, D
3, D
4, R
2, R
3, R
tForm
Stream source sampling circuit.D wherein
3, D
4, R
2Be T
1The base stage mu balanced circuit, a stable base voltage U is provided
B1
Because of U
B1=U
Be1+ U
Re1≈ U
Be1+ I
C1R
3
So I
C1=(U
B1-U
Be1)/(R
3)
Transistor T
1U
Be1, the β temperature influence, in following formula, β is to I
C1There is not directly influence, and U under the normal temperature
Be1Change very little, so I
C1Can be used as stable
The stream source.
Thermistor R
tBe connected on transistor T
1Collector loop in, both end voltage U
RtFor:
U
Rt=I
C1R
t
Because I
C1Be similar to definite value, so U
RtBe proportional to R
t
R
4, R
5, T
2Be analog to digital conversion circuit, when temperature is 26 ℃, U
RtValue is designed to 0.7V, oxide-semiconductor control transistors T
2Base stage, regulate R
4, make T
2Pipe is in critical conduction mode, when temperature is lower than 26 ℃, and U
Rt＞0.7V, T
2Guarantee adequate food and conducting, when temperature is higher than 26 ℃, U
Rt＜0.7V, T
2Pipe ends.
T
3, T
4, R
6～R
9, C
1, C
2Form multi-resonant oscillating circuit, the cycle is 1.2 seconds.It passes through D
5, be used for control by T
5, T
6, R
10～R
13, C
3, C
4The audio oscillator circuit of forming.
Work as T
2During the pipe conducting, U
Ce2≈ 0, T
3The pipe grounded emitter, multivibrator work.At T
4When pipe ends, D
5Partially anti-, T
5, T
6Audio frequency oscillator work, signal passes through T
7, T
8After the complex pipe of forming amplifies, promote sound horn.After 0.6 second, T
4The pipe conducting is through D
5Make T
5End T
6Conducting, T
7, T
8End, loudspeaker are noiseless, pause after 0.6 second T
4End so circulation, the interrupted sounding of loudspeaker again.
When temperature is higher than 26 ℃, T
2Pipe ends, at this moment T
3, T
5, T
7, T
8All end, loudspeaker stop sounding.
The utility model plays from quilt that to raise back to the response time of report to the police calling be 25～60 seconds, and when loudspeaker not during sounding, the quiescent current in the circuit is 2～3mA, and during the loudspeaker sounding, the dynamic current in the circuit is 25～50mA.
In this device, preferentially adopt
Stream source and the temperature sampling sensing circuit that thermistor constitutes mutually because of circuit is that direct current amplifies, after adopting voltage stabilizing to handle, can make the cycle and the audio oscillation frequency stabilization of pulse signal source, and the low output power of putting changes little.When mains fluctuations were big, the assurance entire circuit was reliablely and stablely worked.And satisfy essential power and export.
The utility model also can be further integrated with discrete component and line optimization, dwindle physical dimension, the big small size of comparable present cigarette case reduces 1/5th at least, except that thermistor (temperature) sensor, all be integrated on the crystal chip, loudspeaker can substitute with piezoelectric ceramic piece.After the utility model was implemented to use, it was accurate to report to the police, and also can be used as other needs the supporting use of temperature controlled warning device.
Brief Description Of Drawings
Fig. 1 is the utility model block scheme
Fig. 2 is the utility model circuit theory diagrams
Fig. 3 is temperature sensor electric bridge sampling figure
Fig. 4 is temperature sensor transistor PN junction sampling figure
Fig. 5 is a temperature sensor
Stream source---thermistor sampling figure
Fig. 6 is temperature sensor electric resistance partial pressure sampling figure.
Claims (3)
- Body surface interlayer temperature alarm is characterized in that when 1, a kind of children's of being used for slept, and by temperature sensing circuit, analog to digital conversion circuit, pulse signal circuit, audio oscillator circuit, low discharging circuit, loudspeaker are formed.
- Body surface interlayer temperature alarm is characterized in that when 2, children's according to claim 1 slept, and the sensing circuit that is used for the temperature sampling has four kinds of modes,(1) by R 1, R 2, R 3And R tThe bridge diagram of forming,(2) transistor P, the N knot circuit that is connected in series with crystal diode by fixed resistance,(3) use The stream source is connected in thermistor R tThe sensing circuit at two ends,(4) with fixed resistance R and thermistor R tThe bleeder circuit of series connection.
- Body surface interlayer temperature alarm is characterized in that when 3, children's according to claim 2 slept, thermistor R tBe serially connected inStream pipe source T 1Collector circuit in, both end voltage U RtBe designed to 0.7V, when temperature is higher than 26 ℃, U Rt＜0.7V, and when temperature is lower than 26 ℃, U Rt〉=0.7V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85205803 CN85205803U (en) | 1985-12-27 | 1985-12-27 | Catching cold alarm for sleeping baby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85205803 CN85205803U (en) | 1985-12-27 | 1985-12-27 | Catching cold alarm for sleeping baby |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85205803U true CN85205803U (en) | 1987-07-08 |
Family
ID=4800788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85205803 Ceased CN85205803U (en) | 1985-12-27 | 1985-12-27 | Catching cold alarm for sleeping baby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85205803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116206410A (en) * | 2023-04-27 | 2023-06-02 | 吉林省中医药科学院（吉林省中医药科学院第一临床医院） | Alarm device for child quilt lifting |
-
1985
- 1985-12-27 CN CN 85205803 patent/CN85205803U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116206410A (en) * | 2023-04-27 | 2023-06-02 | 吉林省中医药科学院（吉林省中医药科学院第一临床医院） | Alarm device for child quilt lifting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right |
Termination date: 19880113 |