CN201569501U - Digital Thermometer - Google Patents
Digital Thermometer Download PDFInfo
- Publication number
- CN201569501U CN201569501U CN2009203170761U CN200920317076U CN201569501U CN 201569501 U CN201569501 U CN 201569501U CN 2009203170761 U CN2009203170761 U CN 2009203170761U CN 200920317076 U CN200920317076 U CN 200920317076U CN 201569501 U CN201569501 U CN 201569501U
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- CN
- China
- Prior art keywords
- temperature
- temperature sensor
- digital thermometer
- latch
- chip microcomputer
- 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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- 230000035945 sensitivity Effects 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011159 matrix material Substances 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
- 230000004304 visual acuity Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a digital thermometer, which comprises a singlechip, a buzzer, a temperature sensor and a latch, wherein the buzzer, the temperature sensor and the latch are respectively connected with the singlechip; and a display is connected with the latch. The singlechip adopts the AT89S52 singlechip. The temperature sensor adopts the DS-18B20 digital temperature sensor. For the digital thermometer, the temperature sensor is used for sensing the temperature, and a temperature signal is transmitted to the singlechip and then is displayed by the display; when the temperature is over the set alarm temperature, the buzzer can give an alarm and has high sensitivity; therefore, the digital thermometer has high accuracy and high resolution.
Description
Technical field
The utility model belongs to the single-chip microcomputer applied technical field, relates to a kind of digital thermometer.
Background technology
Existing thermometer all is alcohol thermometer or mercury thermometer, and this thermometer is when temperature is higher or lower, and thermometer is correct displays temperature just, and does not possess warning function.
Summary of the invention
The purpose of this utility model provides a kind of digital thermometer, can carry out temperature detection under high temperature or low temperature, and possess warning function.
The technical scheme that the utility model adopted is, a kind of digital thermometer comprises single-chip microcomputer, and hummer, temperature sensor, latch link to each other with single-chip microcomputer respectively, and display is connected with latch.
Feature of the present utility model also is,
Single-chip microcomputer adopts the AT89S52 single-chip microcomputer.
Temperature sensor adopts the DS-18B20 digital temperature sensor.
Digital thermometer of the present utility model by the temperature sensor senses temperature, passes to single-chip microcomputer with temperature signal, show by display that then when temperature surpassed the alarm temperature of setting, hummer just can be reported to the police, highly sensitive, have high precision and high resolving power.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model digital thermometer.
Wherein, 1. single-chip microcomputer, 2. hummer, 3. temperature sensor, 4. latch, 5. display.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The circuit structure of the utility model digital thermometer as shown in Figure 1, comprises single-chip microcomputer 1, and hummer 2, temperature sensor 3, latch 4 link to each other with single-chip microcomputer 1 respectively, and display 5 is connected with latch 4.
Wherein, single-chip microcomputer 1 adopts the AT89S52 single-chip microcomputer, temperature sensor 3 adopts the DS-18B20 digital temperature sensor, it adopts a unique line interface, only need Tiaokou line communication multiple spot ability, simplified the distributed temperature sensing application, it is bus-powered to need not the outer member data available, voltage range is that 3.0V to 5.5V need not standby power supply, and measuring temperature range is-55 ℃ to+125 ℃.Latch 4 adopts the latch of 74LS373 model.Display 5 is the LS373 model, is controlled to be 8 * 8 dot matrix demonstration.
The use of the utility model digital thermometer is, by temperature sensor 3 temperature sensors, temperature signal passed to single-chip microcomputer 1, shows by display 5 then, and when temperature surpassed the alarm temperature of setting, hummer 2 just can be reported to the police.
Claims (3)
1. a digital thermometer is characterized in that, comprises single-chip microcomputer (1), and hummer (2), temperature sensor (3), latch (4) link to each other with described single-chip microcomputer (1) respectively, and display (5) is connected with latch (4).
2. digital thermometer according to claim 1 is characterized in that, described single-chip microcomputer (1) adopts the AT89S52 single-chip microcomputer.
3. digital thermometer according to claim 1 is characterized in that, described temperature sensor (3) adopts the DS-18B20 digital temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203170761U CN201569501U (en) | 2009-12-10 | 2009-12-10 | Digital Thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203170761U CN201569501U (en) | 2009-12-10 | 2009-12-10 | Digital Thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569501U true CN201569501U (en) | 2010-09-01 |
Family
ID=42661794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203170761U Expired - Fee Related CN201569501U (en) | 2009-12-10 | 2009-12-10 | Digital Thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569501U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004006A (en) * | 2010-12-01 | 2011-04-06 | 天津地热勘查开发设计院 | Uncompensated digital temperature measurement system |
| CN102398730A (en) * | 2011-07-06 | 2012-04-04 | 中国计量科学研究院 | Biological sample storage device and method |
-
2009
- 2009-12-10 CN CN2009203170761U patent/CN201569501U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004006A (en) * | 2010-12-01 | 2011-04-06 | 天津地热勘查开发设计院 | Uncompensated digital temperature measurement system |
| CN102398730A (en) * | 2011-07-06 | 2012-04-04 | 中国计量科学研究院 | Biological sample storage device and method |
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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: 20100901 Termination date: 20101210 |