CN2462493Y - Wetting radio calling device for nursing baby - Google Patents
Wetting radio calling device for nursing baby Download PDFInfo
- Publication number
- CN2462493Y CN2462493Y CN 00256404 CN00256404U CN2462493Y CN 2462493 Y CN2462493 Y CN 2462493Y CN 00256404 CN00256404 CN 00256404 CN 00256404 U CN00256404 U CN 00256404U CN 2462493 Y CN2462493 Y CN 2462493Y
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- China
- Prior art keywords
- circuit
- signal
- calling device
- baby
- sensor
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Abstract
The utility model relates to a temperature and humidity wireless calling device for nursing a baby. The utility model comprises a temperature sensor, a humidity sensor, a signal emitting circuit, a signal receiving circuit and a loudspeaker, wherein, the humidity sensor is a flexible conductive rubber strip which can be washed and kneaded; coding/decoding circuits which take CMOS application-specific integrated circuits as the main devices are arranged in the signal emitting circuit and the signal receiving circuit so that the calling device can send out wireless calling signals when the baby urinates to wet, the body of the baby catches a cold, or the baby catches a fever, and the phenomenon of mutual signal interference can not occur.
Description
The utility model relates to a kind of wireless calling device to temperature, humidity sensitive, particularly a kind of wireless calling device that is used for Baby Care.
Have the wireless calling device that some are used to urinate wet prompting in the prior art, by humidity sensor, signal transmission circuit, signal receiving circuit, and several parts of loudspeaker are formed, when baby's urinating, humidity sensor is imported radiating circuit with signal, the receiver that the radiowave of this circuit emission can be carried by the paramedic in a big way receives, and helps Baby Care work.But there is following shortcoming in this technology: one, humidity sensor adopts plain conductor and conducting strip, and flexibility is relatively poor, makes the baby that uncomfortable sensation be arranged, and the inconvenience washing; Two, the electric signal of emission and acceptance is not encoded, and the product existence interferes with each other phenomenon; Three, owing to do not establish temperature sensor, can only send calling to baby's urinating, to not building such as baby's quilt, or phenomenon such as hyperpyrexia then has no way of learning, influences its range of application.
The purpose of this utility model provides a kind of temperature, humidity wireless calling device that is used for Baby Care, and this calling set has flexible humidity sensor, and can not interfere with each other.
The purpose of this utility model is achieved through the following technical solutions, and a kind of humiture wireless calling device that is used for Baby Care comprises sensor, signal transmission circuit, signal receiving circuit and loudspeaker, it is characterized in that:
A, sensor comprise humidity sensor and temperature sensor two partly, and wherein humidity sensor is the compliant conductive rubber strip;
Be provided with the coded modulation circuit in B, the signal transmission circuit, the input end of this circuit is connected with the electronic switch and the high frequency oscillator of radiating circuit respectively with output terminal;
Be provided with the modulation signal decoding circuit in C, the signal receiving circuit, the input and output side of this circuit is connected with amplification and rectification circuit and loudspeaker in the receiving circuit respectively.
Said temperature sensor is the thermometric diode in the such scheme.
The decoding circuit of said coded modulation circuit and modulation signal all uses CMOS special IC piece to be main device in the such scheme.
Be provided with in the said signal receiving circuit in the such scheme and be connected, comprise the timing control circuit of phase inverter, capacitor, diode and microswitch with signal transmission pathway.
Adopt the foundation of such scheme to be, the existing CMOS own coding integrated circuit that working current is little, operating voltage range is wide in the microelectronic component can be used for miniwatt and transmits and receives device at present.Sort circuit is in when work, and coded signal is delivered to the other side in the string mode of drawing, after the other side's demoder carries out coded signal that receives and password itself repeatedly relatively, as unanimity as a result, then in respective pin output control signal.Because this integrated circuit has a plurality of coding sides, its code set number can reach hundreds of thousands or millions of individual, thereby the possibility of repeated code is minimum, can the phase mutual interference.Adopting conductive rubber strip as humidity sensor, is because this sensor is compared with conducting strip with plain conductor, and flexibility and elasticity are preferably arranged, and can wash and rub.Adopting the thermometric diode as temperature sensor, is because this element has preferably temperature control and performance more stable.
The utility model has the advantages that: one, owing to adopt the compliant conductive rubber strip as temperature sensor, it is pleasant that the baby feels, and can wash and rub; Two, owing to increase coding-decoding circuit in radiating circuit and the receiving circuit, eliminated phenomenon interfering with each other; Three, owing to increased temperature sensor, the range of application of this calling set is expanded, promptly except that to urinating wet can carrying out the wireless calling, the baby is kicked off quilt or body temperature is undesired all can carry out wireless calling.
Description of drawings:
Fig. 1 is the utility model one-piece construction synoptic diagram.
Fig. 2 is the utility model radiating circuit block diagram.
Fig. 3 is the utility model receiving circuit block diagram.
Fig. 4 is the utility model embodiment radiating circuit wiring diagram.
Fig. 5 is the utility model embodiment receiving circuit wiring diagram.
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model calling set is made of humidity sensor 1, temperature sensor 2, signal transmission circuit 3, signal receiving circuit 4 and loudspeaker 5, and as shown in Figure 1, humidity sensor is two parallel conductive rubber strips, and every width is 3～6mm.When generation urine wet phenomenon, resistance reduced between the rubber strip, thus the electronic switch of enabling signal radiating circuit.Temperature sensor 2 is the thermometric diode, this pipe has linear negative temperature coefficient, as the electric current that flows through diode is constant, every increase and decrease 1 degree of temperature, forward voltage drop will subtract and increase 2.6mv, but the also electronic switch of enabling signal radiating circuit, humidity sensor 1 was positioned at baby' diaper middle inside position during this example was executed, temperature sensor has two, lay respectively at the inboard and the outside of baby' diaper, the temperature variation of perception baby and external environment simultaneously, signal transmission circuit is loaded in the box and is carried by the baby, and signal receiving circuit and loudspeaker are loaded in the box to be carried by the paramedic.
It is wireless that the signal transmission circuit of present embodiment comprises humidity sensor interface, temperature sensor interface, temperature signal amplifies comparator circuit, electronic switch, coded modulation circuit, high-frequency oscillating circuits and emission, as Fig. 2 and shown in Figure 4.R
1Be humidity sensor equivalent resistance, D
1Be temperature sensor, integrated circuit (IC)
1And peripheral circuit is formed temperature signal amplification and comparator circuit, A
1Be in-phase amplifier, have higher input impedance, A
2, A
3Form window comparator, RP
1And RP
2Be to set the potentiometer of calling out the temperature upper and lower limit.Transistor T
1, T
2And resistance R
7, R
8, R
9Form electronic switch, IC
2Be the coding integrated circuit, model is VD5026, triode T
3And peripheral cell composition capacitance connecting three point type oscillator, its oscillation frequency is about 27MHZ, and high frequency carrier is by IC
2After the string of output draws coded signal modulation, as call signal by being printed on the antenna L on the circuit board
1To aerial emission.
The signal receiving circuit of present embodiment comprises that reception is wireless, and superregenerative detection circuit, amplification and rectification circuit, modulation signal decoding circuit, time control circuit and loudspeaker are as Fig. 3 and shown in Figure 5.Inductance L
3Be receiving antenna, transistor T
4, inductance L
3, L
4, resistance R
13, R
14Capacitor C
4, C
5, C
6, C
7Form superregenerative detector, transistor T
4, inductance L
3, capacitor C
5, C
6Form capacitance connecting three point type oscillator, the transmission frequency of its oscillation frequency and radiating circuit is consistent, produces the higher-order of oscillation that is subjected to interrupted oscillation control, after received signal, at the load R of superregenerative detection circuit
12On will obtain and the consistent low-frequency voltage of encoding.IC
3Be decoding integrated circuit, model is VD5028, and the coding method in its coding method and the radiating circuit is in full accord, its input end with by inverter ic
5: A, IC
5: B, IC
5: the amplification and rectification circuit that C forms is connected load R
12On low-frequency voltage after amplifying shaping, import decoding circuit, do repeatedly behind the compare OK after capacitor C 10 filtering, to call out integrated circuit (IC) then with local code with music at its 17 pin output high level
4Be connected IC
4The the 4th, the 5th pin be connected with loudspeaker, make it can send melodious musical sound.
Be provided with by inverter ic in the signal receiving circuit of present embodiment
5: the timing circuit that D, resistance R 16, diode D8, capacitor C 9 and microswitch S constitute, when the paramedic does not wish to listen continuously ring tone, can press microswitch S, make C
9Discharge rapidly through S, at this moment inverter ic
5: the level of D input end and output terminal just takes a turn for the worse, thereby pins the transmission channel of call signal.
The testing result of present embodiment is: emissive power 3mw, 15 meters of maximum launch ranges, transmitter operating voltage 6V, working current 2mA, operation of receiver voltage 3V, working current 5mA.
Claims (4)
1. a humiture wireless calling device that is used for Baby Care comprises sensor, signal transmission circuit, signal receiving circuit and loudspeaker, it is characterized in that:
A, sensor comprise temperature sensor and humidity sensor two partly, and wherein humidity sensor is the compliant conductive rubber strip;
Be provided with the coded modulation circuit in B, the signal transmission circuit, the input end of this circuit and output terminal are connected with electronic switch and high frequency oscillator in the radiating circuit respectively;
Be provided with the modulation signal decoding circuit in C, the signal receiving circuit, the input and output side of this circuit is connected with amplification and rectification circuit and loudspeaker in the receiving circuit respectively.
2. wireless calling device according to claim 1 is characterized in that said temperature sensor is the thermometric diode.
3. wireless calling device according to claim 1, the main device that it is characterized in that the decoding circuit of said coded modulation circuit and modulation signal is the CMOS integrated circuit block.
4. wireless calling device according to claim 1 is characterized in that being provided with in the said signal receiving circuit timing control circuit that comprises phase inverter, capacitor, diode, microswitch that is connected with signal transmission pathway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256404 CN2462493Y (en) | 2000-11-12 | 2000-11-12 | Wetting radio calling device for nursing baby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256404 CN2462493Y (en) | 2000-11-12 | 2000-11-12 | Wetting radio calling device for nursing baby |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2462493Y true CN2462493Y (en) | 2001-11-28 |
Family
ID=33613126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00256404 Expired - Fee Related CN2462493Y (en) | 2000-11-12 | 2000-11-12 | Wetting radio calling device for nursing baby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2462493Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390135B (en) * | 2005-12-28 | 2010-06-09 | 益智科学（香港）有限公司 | Personal warning apparatus |
| CN108697340A (en) * | 2016-03-28 | 2018-10-23 | 石磊 | A kind of child's treatment device based on Internet of Things |
-
2000
- 2000-11-12 CN CN 00256404 patent/CN2462493Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390135B (en) * | 2005-12-28 | 2010-06-09 | 益智科学（香港）有限公司 | Personal warning apparatus |
| CN108697340A (en) * | 2016-03-28 | 2018-10-23 | 石磊 | A kind of child's treatment device based on Internet of Things |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |