CN204090167U - A kind of electric blanket protective device - Google Patents
A kind of electric blanket protective device Download PDFInfo
- Publication number
- CN204090167U CN204090167U CN201420202822.3U CN201420202822U CN204090167U CN 204090167 U CN204090167 U CN 204090167U CN 201420202822 U CN201420202822 U CN 201420202822U CN 204090167 U CN204090167 U CN 204090167U
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- CN
- China
- Prior art keywords
- electric blanket
- protective device
- chip microcomputer
- temperature sensor
- digital temperature
- 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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Abstract
The utility model discloses a kind of electric blanket protective device, comprise transformer, single-chip microcomputer, digital temperature sensor, buzzer, quartz oscillator, trimmer, resistance, triode, it is that electric blanket protective device is powered that the civil power of 220V is converted to 5V DC power supply by described transformer, and has short-circuit protection function; Described digital temperature sensor, described buzzer, described quartz oscillator, described trimmer are all connected with described single-chip microcomputer.Electric blanket protective device of the present utility model, can carry out excess temperature acoustic alarm and short-circuit protection, and effectively improve the fail safe of electric blanket use procedure, and this installation cost is lower, certainty of measurement is high, is easy to spread.
Description
Technical field
The utility model relates to detection technique, signal processing technology field, particularly relates to a kind of electric blanket protective device.
Background technology
Electric blanket, has another name called electrical blanket, is a kind of contact electric heating appliance, is mainly used in improving when winter, people slept temperature in quilt to reach the object of heating.The advantages such as it has moderate cost, heating effect is good, power consumption is few, easy to use, the dark welcome being subject to old man and children.But the safety in electric blanket use procedure is highly paid close attention to.Main manifestations is: (1) will guard against damp in using, and especially will prevent child and patient from wetting the bed; (2) electric blanket not must cut off the electricity supply by the used time, must guard against and be energized for a long time by electric blanket under unserviced state.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of electric blanket protective device with excess temperature acoustic alarm and short-circuit protection.
The utility model solves the technical scheme that its technical problem adopts: a kind of electric blanket protective device; comprise transformer, single-chip microcomputer, digital temperature sensor, buzzer, quartz oscillator, trimmer, resistance and triode, described digital temperature sensor, described buzzer, described quartz oscillator are all connected with described single-chip microcomputer with described trimmer.
Improve as to the one of technical scheme described in the utility model, described digital temperature sensor is digital temperature sensor DS18B20.
Improve as to the one of technical scheme described in the utility model, described single-chip microcomputer is AT89S51 single-chip microcomputer.
Improve as to the one of technical scheme described in the utility model, described buzzer is connected with described single-chip microcomputer with described resistance by described triode.
Improve as to the one of technical scheme described in the utility model, it is that electric blanket protective device is powered that the civil power of 220V is converted to 5V DC power supply by described transformer.
Improve as to the one of technical scheme described in the utility model, described digital temperature sensor is placed in electric blanket inside.
Improve as to the one of technical scheme described in the utility model, described digital temperature sensor is connected with described electric blanket protective device main circuit by holding wire.
Improve as to the one of technical scheme described in the utility model, the electronic component of described transformer, described single-chip microcomputer, described buzzer, described quartz oscillator, described trimmer, described resistance and described triode is all on circuit boards integrated.
Therefore, the electric blanket protective device that the utility model provides, can carry out excess temperature acoustic alarm and short-circuit protection, and effectively improve the fail safe of electric blanket use procedure, and this installation cost is lower, certainty of measurement is high, is easy to spread.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the circuit theory diagrams of electric blanket protective device of the present utility model;
Fig. 2 is the system block diagram of electric blanket protective device excess temperature of the present utility model acoustic alarm;
Now by as follows for the label declaration in accompanying drawing: 1 is single-chip microcomputer, 2 is digital temperature sensor, and 3 is buzzer, and 4 is transformer, and 5 is quartz oscillator, and 6 is trimmer.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In the utility model preferred embodiment; Fig. 1 is the circuit theory diagrams of electric blanket protective device of the present utility model; as shown in Figure 1; the electric blanket protective device of the utility model specific embodiment it comprise: comprise transformer 4, single-chip microcomputer 1, digital temperature sensor 2, buzzer 3, quartz oscillator 5, trimmer 6, resistance and triode, digital temperature sensor 2, buzzer 3, quartz oscillator 5 are all connected with single-chip microcomputer 1 with trimmer 6.Digital temperature sensor 2 in the electric blanket protective device of the utility model specific embodiment is described for AT89S51 single-chip microcomputer for digital temperature sensor DS18B20, single-chip microcomputer 1.
In the utility model, the civil power of 220V is converted to 5V DC power supply by transformer 4 is that electric blanket protective device is powered, and has short-circuit protection function, is connected, for electric blanket 7 provides the operating voltage of 220V by internal short-circuit protective circuit with electric blanket 7.The DQ end of digital temperature sensor DS18B20 connects the P1.0 pin of AT89S51 single-chip microcomputer 1, XTAL1 and the XTAL2 mouth cross-over connection quartz oscillator 5 of AT89S51 single-chip microcomputer 1 and trimmer 6, form a stable self-excited oscillator, for single-chip microcomputer provides clock control signal.Buzzer 3 is connected with single-chip microcomputer with resistance by triode, buzzer 3 one termination 5V DC power supply, and the other end is connected with triode, and transistor base is connected with P0.0 with the P0.5 pin of AT89S51 single-chip microcomputer 1 respectively by resistance.When P0.0 and P0.5 pin is low level, drive corresponding triode ON ,+5V DC power supply is powered to buzzer 3 by triode, and buzzer 3 sends chimes of doom.
Fig. 2 is the system block diagram of electric blanket protective device excess temperature of the present utility model acoustic alarm; as shown in Figure 2; the electric blanket protective device of the utility model specific embodiment with AT89S51 single-chip microcomputer for core; according to the temperature information that digital temperature sensor 2 provides, carry out acoustic alarm by the buzzer 3 on electric blanket protective device.Digital temperature sensor 2 is placed in electric blanket inside; the electronic component of transformer 4, single-chip microcomputer 1, buzzer 3, quartz oscillator 5, trimmer 6, resistance and triode is all on circuit boards integrated, and digital temperature sensor 2 is connected with electric blanket protective device main circuit by holding wire.After digital temperature sensor 2 monitors the temperature information of electric blanket, AT89S51 single-chip microcomputer 1 can be passed the signal to, AT89S51 single-chip microcomputer 1 is processed this signal by program, then judge whether temperature exceedes the electric blanket ignition point warning value pre-set, exceeding default warning value when monitoring temperature value, just triggering buzzer 3 immediately and carrying out acoustic alarm.
Electric blanket protective device of the present utility model, transformer has short-circuit protection function, is connected, is short-circuited once electric blanket makes moist, just cut off the electricity supply immediately by internal short-circuit protective circuit with electric blanket.The temperature signal of digital temperature sensor DS18B20 collection is digital signal, can not decay and the signal that is interfered, enormously simplify the hardware configuration of device because holding wire is long.When applying, digital temperature sensor is placed in electric blanket inside, and all the other elements are all on circuit boards integrated, and digital temperature sensor is connected with protective device main circuit by holding wire.Exceeding default warning value when monitoring temperature value, just triggering acoustic alarm immediately, allowing people take measures in time.This apparatus structure is simple, and safe and reliable, certainty of measurement is high, is easy to spread.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to the utility model claims.
Claims (8)
1. an electric blanket protective device; it is characterized in that; comprise transformer, single-chip microcomputer, digital temperature sensor, buzzer, quartz oscillator, trimmer, resistance and triode, described digital temperature sensor, described buzzer, described quartz oscillator are all connected with described single-chip microcomputer with described trimmer.
2. electric blanket protective device according to claim 1, is characterized in that, described digital temperature sensor is digital temperature sensor DS18B20.
3. electric blanket protective device according to claim 1, is characterized in that, described single-chip microcomputer is AT89S51 single-chip microcomputer.
4. electric blanket protective device according to claim 1, is characterized in that, described buzzer is connected with described single-chip microcomputer with described resistance by described triode.
5. electric blanket protective device according to claim 1, is characterized in that, it is that electric blanket protective device is powered that the civil power of 220V is converted to 5V DC power supply by described transformer.
6. electric blanket protective device according to claim 1, is characterized in that, described digital temperature sensor is placed in electric blanket inside.
7. electric blanket protective device according to claim 6, is characterized in that, described digital temperature sensor is connected with described electric blanket protective device main circuit by holding wire.
8. electric blanket protective device according to claim 1; it is characterized in that, the electronic component of described transformer, described single-chip microcomputer, described buzzer, described quartz oscillator, described trimmer, described resistance and described triode is all on circuit boards integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420202822.3U CN204090167U (en) | 2014-04-24 | 2014-04-24 | A kind of electric blanket protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420202822.3U CN204090167U (en) | 2014-04-24 | 2014-04-24 | A kind of electric blanket protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204090167U true CN204090167U (en) | 2015-01-07 |
Family
ID=52182831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420202822.3U Expired - Fee Related CN204090167U (en) | 2014-04-24 | 2014-04-24 | A kind of electric blanket protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204090167U (en) |
-
2014
- 2014-04-24 CN CN201420202822.3U patent/CN204090167U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20170424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |