CN2267456Y - Device for alarming quilt being away from the child at night - Google Patents
Device for alarming quilt being away from the child at night Download PDFInfo
- Publication number
- CN2267456Y CN2267456Y CN 96232242 CN96232242U CN2267456Y CN 2267456 Y CN2267456 Y CN 2267456Y CN 96232242 CN96232242 CN 96232242 CN 96232242 U CN96232242 U CN 96232242U CN 2267456 Y CN2267456 Y CN 2267456Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- diode
- electric capacity
- positive
- power supply
- 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.)
- Expired - Fee Related
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- Bedding Items (AREA)
- Emergency Alarm Devices (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The utility model relates to the technology of temperature measurement. The utility model is composed of a sensitivity regulating unit, a memory storage unit, a voltage comparator, a voice circuit and a power source. The utility model has the advantages of small size, low power consumption, simple structure, light weight, easy mass production, etc., which is an ideal reminding device for people to cover quilts for children.
Description
The utility model relates to the temperature detection technology.
Children kick off quilt in bed, and the cat fever of can catching a cold is heavy then cause tonsillitis, diseases such as tracheitis, in order to cover quilt to child, some father and mother wakes up and cover quilt for child several times one night, can in time be covered once pedaling out quilt even so also can't guarantee child.For solve to give pedal by child cover the problem of quilt, existing many people have designed Quilt-kick-off alarm, but still exist the alarm volume big, complex structure, sensitivity is difficult for adjusting, power consumption, cost height, be unfavorable for shortcoming such as batch process.
The purpose of this utility model is, overcomes the shortcoming of existing Quilt-kick-off alarm, designs a kind of simple in structurely, and volume is little, and is low in energy consumption, is easy to produce, the convenient children's quilt-kicking warner that uses.
The utility model is by temperature sensor, the sensitivity adjusting unit, and the memory storage unit, voltage comparator circuit, voice news sound circuit and power supply are formed.
Sensitivity adjusting of the present utility model unit is composed in series by two resistance, the memory storage unit is made up of diode and capacitances in series, voltage comparator is made up of operational amplifier, and the voice news are rung circuit and are made of power supply (9) power supply musical film (7) and piezoelectricity singing piece (8).Use button cell.
The utility model has two kinds of structures.See accompanying drawing 1 for first kind:
Temperature sensor (1) and resistance (3) pick out series connection from positive supply, are added to the positive terminal of diode (2) at the A of resistance (3) some current potential, diode (2) series capacitance (4), and switch (10) is connected in parallel on the two ends of electric capacity (4); Operational amplifier (6) is connected into the voltage follower mode, it exports jointing temp sensor (1), resistance (5) is in parallel with operational amplifier (6), the output of operational amplifier (6) adds on the musical film (7), the positive and negative output terminal of musical film (7) connects the two poles of the earth of piezoelectricity singing piece (8), the negative terminal connecting resistance (3) of power supply (9), electric capacity (4), switch (10).
Accompanying drawing 2 is second kind of structure of the present utility model:
Temperature sensor (1), resistance (5), (3) pick out from the positive supply series connection, be added to the positive terminal of diode (2) at the B of resistance (3) some current potential, diode (2) series capacitance (4), switch (10) is connected in parallel on the two ends of electric capacity (4), operational amplifier (6) is connected into the voltage follower mode, it imports termination capacitor (4), output terminal adds on the musical film (7), the positive and negative output terminal of musical film (7) connects the two poles of the earth of piezoelectricity buzzing sheet (8), the negative terminal connecting resistance (3) of power supply (9), electric capacity (4), switch (10).
The course of work of the present utility model is: after environment temperature rises, the temperature sensor resistance changes, cause that working point b current potential raises, the input end that the memory storage unit recovers to follow the tracks of maintenance and the corresponding noble potential of b point and sends into operational amplifier, the current potential that a is ordered is directly sent into another input end of operational amplifier, and the voltage comparator of operational amplifier formation compares the potential difference (PD) between a, the b point thus.When descending, environment temperature causes the decline of a point current potential, and certain voltage difference is when taking place in the current potential of ordering with b, and voltage comparator is a noble potential with instantaneous electronegative potential high jump, triggers the loud circuit working of voice news, send music, thereby reach the purpose of reminding the adult to cover quilt to child.
The utility model has the advantages that simple in structurely, volume is little, and is in light weight, low in energy consumption, is easy to produce in batches, practical.
Description of drawings:
1, temperature sensor; 2, diode; 3, resistance; 4, electric capacity; 5, resistance; 6 operational amplifiers; 7, musical film; 8, piezoelectricity singing piece; 9, power supply; 10, switch.
Claims (1)
1. one kind by resistance, electric capacity, children's quilt-kicking warner that diode etc. are formed, it is characterized in that: the sensitivity adjusting unit is composed in series by two resistance, the memory storage unit is made up of diode and capacitances in series, voltage amplifier is made up of operational amplifier, and the voice news are rung circuit and are made of the power supply power supply musical film and piezoelectricity singing piece:
A. temperature sensor (1) and resistance (3) pick out from positive supply (9) series connection, be added to the positive terminal of diode (2) at the A of resistance (3) some current potential, diode (2) series capacitance (4), switch (10) is connected in parallel on the two ends of electric capacity (4), operational amplifier (6) is connected into the voltage follower mode, its input connects electric capacity (4) output, the output of operational amplifier (6) adds on the musical film (7), the two poles of the earth of musical film (7) positive and negative output termination piezoelectricity singing piece (8), the negative terminal connecting resistance (3) of power supply (9), electric capacity (4), switch (10);
B. temperature sensor (1), resistance (5), (3), pick out from positive supply (9) series connection, be added to the positive terminal of diode (2) at the B of resistance (3) some current potential, diode (2) series capacitance (4), switch (10) is connected in parallel on the musical film (7) of electric capacity (4), the positive and negative output terminal of musical film (7) connects the two poles of the earth of piezoelectricity singing piece (8), the negative terminal connecting resistance (3) of power supply (9), electric capacity (4), switch (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232242 CN2267456Y (en) | 1996-07-03 | 1996-07-03 | Device for alarming quilt being away from the child at night |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96232242 CN2267456Y (en) | 1996-07-03 | 1996-07-03 | Device for alarming quilt being away from the child at night |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2267456Y true CN2267456Y (en) | 1997-11-12 |
Family
ID=33909231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96232242 Expired - Fee Related CN2267456Y (en) | 1996-07-03 | 1996-07-03 | Device for alarming quilt being away from the child at night |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2267456Y (en) |
-
1996
- 1996-07-03 CN CN 96232242 patent/CN2267456Y/en not_active Expired - Fee Related
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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 |
Granted publication date: 1997.11.12 |