CN202533187U - Electronic thermometer - Google Patents
Electronic thermometer Download PDFInfo
- Publication number
- CN202533187U CN202533187U CN2012200831016U CN201220083101U CN202533187U CN 202533187 U CN202533187 U CN 202533187U CN 2012200831016 U CN2012200831016 U CN 2012200831016U CN 201220083101 U CN201220083101 U CN 201220083101U CN 202533187 U CN202533187 U CN 202533187U
- Authority
- CN
- China
- Prior art keywords
- chip microcomputer
- temperature sensor
- electronic thermometer
- temperature
- output terminal
- 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
Links
- 238000005259 measurement Methods 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
Images
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses an electronic thermometer which comprises a single chip microcomputer, a temperature sensor, a buzzer, a digital tube, a scanning drive circuit and a power supply. An output end of the temperature sensor is connected with an input end of the single chip microcomputer. An output end of the buzzer is connected with the digital tube. Compared with traditional thermometers, the electronic thermometer is convenient to read, wide in temperature measuring range and accurate in temperature measuring. In addition, the buzzer gives an alarm when temperature exceeds a preset value.
Description
Technical field
The utility model belongs to the temperature measurement technology field, is specifically related to a kind of electronic thermometer.
Background technology
Thermometer in the market is alcohol or mercury thermometer mostly, and these thermometers have shortcomings such as reading difficulty, measurement of factor, measurement range are little when measuring temperature, and can not report to the police.
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 electronic thermometer with warning function to be provided.
Technical scheme: the described a kind of electronic thermometer of the utility model comprises single-chip microcomputer, temperature sensor; Hummer; Charactron, scan drive circuit and power supply, the output terminal of said temperature sensor links to each other with the input end of single-chip microcomputer; The input end of hummer links to each other with the output terminal of single-chip microcomputer, and the output terminal of single-chip microcomputer links to each other with charactron.
As preferably, said single-chip microcomputer adopts the AT89C51 single-chip microcomputer.
As preferably, said temperature sensor is the DS18B20 digital temperature sensor.
Beneficial effect: the utility model has the advantages that the temperature indication range is wide, precision is high and demonstration is accurate.
Description of drawings
Accompanying drawing is the utility model general structure circuit diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
The described a kind of electronic thermometer of the utility model comprises single-chip microcomputer, temperature sensor; Hummer; Charactron, scan drive circuit and power supply, the output terminal of temperature sensor links to each other with the input end of single-chip microcomputer; The input end of hummer links to each other with the output terminal of single-chip microcomputer, and the output terminal of single-chip microcomputer links to each other with charactron.
What wherein single-chip microcomputer adopted is the AT89C51 single-chip microcomputer, and what temperature sensor adopted is the DS18B20 digital temperature sensor, adopts a line interface, and it is bus-powered to need not the outer member data available, and measuring temperature range is-55 ℃～+ 125 ℃, and measuring accuracy is 0.1 ℃.
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, shows; When temperature surpassed the temperature value of setting, hummer carried out alarm.
Claims (3)
1. an electronic thermometer is characterized in that: comprise single-chip microcomputer, temperature sensor; Hummer; Charactron, scan drive circuit and power supply, the output terminal of said temperature sensor links to each other with the input end of single-chip microcomputer; The input end of hummer links to each other with the output terminal of single-chip microcomputer, and the output terminal of single-chip microcomputer links to each other with charactron.
2. a kind of electronic thermometer according to claim 1 is characterized in that: said single-chip microcomputer adopts the AT89C51 single-chip microcomputer.
3. a kind of electronic thermometer according to claim 1 is characterized in that: said temperature sensor adopts the DS18B20 digital temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200831016U CN202533187U (en) | 2012-03-08 | 2012-03-08 | Electronic thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200831016U CN202533187U (en) | 2012-03-08 | 2012-03-08 | Electronic thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202533187U true CN202533187U (en) | 2012-11-14 |
Family
ID=47134364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200831016U Expired - Fee Related CN202533187U (en) | 2012-03-08 | 2012-03-08 | Electronic thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202533187U (en) |
-
2012
- 2012-03-08 CN CN2012200831016U patent/CN202533187U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20130308 |