CN202533182U - Alarm digital thermometer - Google Patents
Alarm digital thermometer Download PDFInfo
- Publication number
- CN202533182U CN202533182U CN201220083094XU CN201220083094U CN202533182U CN 202533182 U CN202533182 U CN 202533182U CN 201220083094X U CN201220083094X U CN 201220083094XU CN 201220083094 U CN201220083094 U CN 201220083094U CN 202533182 U CN202533182 U CN 202533182U
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- digital thermometer
- warning
- temperature sensor
- 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 an alarm digital thermometer, which comprises a single chip microcomputer, a temperature sensor, a keyboard input, a nixie tube, an alarm circuit and a power supply, wherein the output end of the temperature sensor is connected with the input end of the single chip microcomputer, the keyboard input is connected with the input end of the single chip microcomputer, the output end of the single chip microcomputer is connected with the nixie tube, and the alarm circuit is connected with the output end of the single chip microcomputer. The alarm digital thermometer disclosed by the utility model can be used to realize digital display of temperature, is accurate in measurement, can achieve over-temperature warning function by entering an upper limit value and a lower limit value of temperature, and is practical and convenient to use.
Description
Technical field
The utility model belongs to the temperature measurement technology field, is specifically related to a kind of digital thermometer with warning function.
Background technology
Thermometer in the market is alcohol or mercury thermometer mostly, and these thermometers exist measurement numerical value difficulty to read the situation inaccurate with measuring accuracy, and most thermometer does not have warning function.
The utility model content
The utility model purpose: the purpose of the utility model is in order to solve the deficiency of prior art, a kind of digital thermometer with warning function to be provided.
Technical scheme: the described a kind of warning digital thermometer of the utility model comprises single-chip microcomputer, temperature sensor; The keyboard input, charactron, warning circuit and power supply; The output terminal of said temperature sensor links to each other with the input end of single-chip microcomputer; The keyboard input links to each other with the input end of single-chip microcomputer, and the output terminal of single-chip microcomputer links to each other with charactron, and warning circuit links to each other with the output terminal of single-chip microcomputer.
As preferably, that said single-chip microcomputer adopts is AT89S52.
As preferably, that said temperature sensor adopts is DS18B20.
As preferably, the phonation circuit that said warning circuit is made up of loudspeaker and triode.
Beneficial effect: the utility model has the advantages that the numeral that can realize temperature shows, measure accurately, thereby and the value up and down that can key in temperature realize the overtemperature alarm function, practical and convenient.
Description of drawings
Accompanying drawing is the utility model overall circuit structural drawing.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Shown in accompanying drawing, a kind of warning digital thermometer comprises single-chip microcomputer; Temperature sensor, keyboard input, charactron; Warning circuit and power supply, the output terminal of temperature sensor links to each other with the input end of single-chip microcomputer, and the keyboard input links to each other with the input end of single-chip microcomputer; The output terminal of single-chip microcomputer links to each other with charactron, and warning circuit links to each other with the output terminal of single-chip microcomputer.
That wherein single-chip microcomputer adopts is AT89S52, and that temperature sensor adopts is DS18B20, the phonation circuit that warning circuit is made up of loudspeaker and triode, and measuring temperature range is-55 ℃～+ 125 ℃, measuring error is in ± 0.5 ℃.
The principle of work of the utility model is: through the temperature sensor senses temperature, take temperature samples through temperature sensor again, single-chip microcomputer is read the data of surveying through one-wire interface, and data are changed through single-chip microcomputer again, on charactron, show; Keyboard can the input temp scope the bound limit value, when temperature surpassed the temperature limit value of setting, loudspeaker carried out alarm.
Claims (5)
1. a warning digital thermometer is characterized in that: comprise single-chip microcomputer, temperature sensor; The keyboard input, charactron, warning circuit and power supply; The output terminal of said temperature sensor links to each other with the input end of single-chip microcomputer; The keyboard input links to each other with the input end of single-chip microcomputer, and the output terminal of single-chip microcomputer links to each other with charactron, and warning circuit links to each other with the output terminal of single-chip microcomputer.
2. a kind of warning digital thermometer according to claim 1 is characterized in that: that said single-chip microcomputer adopts is AT89S52.
3. a kind of warning digital thermometer according to claim 1 is characterized in that: that said temperature sensor adopts is DS18B20.
4. a kind of warning digital thermometer according to claim 1 is characterized in that: the phonation circuit that said warning circuit is made up of loudspeaker and triode.
5. a kind of warning digital thermometer according to claim 1 is characterized in that: said charactron is 4 anode charactrons altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220083094XU CN202533182U (en) | 2012-03-08 | 2012-03-08 | Alarm digital thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220083094XU CN202533182U (en) | 2012-03-08 | 2012-03-08 | Alarm digital thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202533182U true CN202533182U (en) | 2012-11-14 |
Family
ID=47134359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220083094XU Expired - Fee Related CN202533182U (en) | 2012-03-08 | 2012-03-08 | Alarm digital thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202533182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471734A (en) * | 2013-09-10 | 2013-12-25 | 昆山新金福精密电子有限公司 | Digital thermometer |
-
2012
- 2012-03-08 CN CN201220083094XU patent/CN202533182U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471734A (en) * | 2013-09-10 | 2013-12-25 | 昆山新金福精密电子有限公司 | Digital thermometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20130308 |