CN102967391A - Temperature sensor for automobile - Google Patents
Temperature sensor for automobile Download PDFInfo
- Publication number
- CN102967391A CN102967391A CN2012104675505A CN201210467550A CN102967391A CN 102967391 A CN102967391 A CN 102967391A CN 2012104675505 A CN2012104675505 A CN 2012104675505A CN 201210467550 A CN201210467550 A CN 201210467550A CN 102967391 A CN102967391 A CN 102967391A
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- temperature sensor
- sensor
- converter
- rom
- automobile
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Abstract
The invention discloses a temperature sensor for an automobile. The temperature sensor comprises a temperature sensor, a humidity sensor, an operational amplifier, an analog/digital (A/D) converter, a serial interface and a check module, wherein the temperature sensor and the humidity sensor are respectively connected with a signal input end of the operational amplifier; an output end of the operational amplifier is connected with the A/D converter; the A/D converter is connected with the serial interface and the check module; the serial interface and the check module comprises four interfaces including CSK, DATA, VCC and GND; and the DATA interface is connected with the A/D converter through a calibration register. The sensor has extremely high reliability and excellent long-term stability and has the advantages of superiority in quality, ultrafast response, high interference resistance, extremely high cost performance and the like. Each sensor is calibrated in an accurate humidity check room.
Description
Technical field
The present invention relates to a kind of automobile temperature sensor.
Background technology
Temperature sensor commonly used adopts DS18B20 as the evaporator temperature collection terminal at present, DS18B20 is the temperature sensor that Dallas semiconductor company (existing by Maxim corporate buyout) produces " one-wire bus " interface, it is-55 ℃～+ 125 ℃ that DS18B20 measures temperature range, in-10 ℃～+ 85 ℃ scopes, precision is ± 0.5 ℃, support the voltage range of 3V～5.5V, so the work efficiency of this sensor is subject to the in many ways impact of factor, and precision is relative also lower.
Summary of the invention
In order to improve the work efficiency of temperature sensor, and improve the precision of sensor, the invention provides a kind of automobile temperature sensor.
Purpose of the present invention is come specific implementation by the following technical programs:
A kind of automobile temperature sensor, comprise CRC generator, buffer, storer, 64 ROM one-wire interface modules and power supply detector, described CRC generator docks with buffer, described buffer docks with storer, described storer docks with 64 ROM one-wire interface modules, and described 64 ROM one-wire interface modules are docked with the power supply detector.
Described buffer comprises temperature sense probe, upper limit trigger, lower limit trigger.
The inside VDD interface of described 64 ROM one-wire interface modules is located between the emitter of two diodes, and the transmitter of two diodes connects altogether.
Sensor provided by the invention, scene temperature have improved the anti-interference of system greatly directly with the digital form transmission of " one-wire bus ".Be fit to abominable scene temperature and measure, such as environment control, equipment or process control, thermometric class consumption electronic product etc.
Description of drawings
The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.
Fig. 1 is the structural drawing that the described automobile of the embodiment of the invention is used temperature sensor.
Embodiment
As shown in Figure 1, the described automobile temperature sensor of the embodiment of the invention, comprise CRC generator, buffer, storer, 64 ROM one-wire interface modules and power supply detector, described CRC generator docks with buffer, described buffer docks with storer, described storer docks with 64 ROM one-wire interface modules, and described 64 ROM one-wire interface modules are docked with the power supply detector.
Described buffer comprises temperature sense probe, upper limit trigger, lower limit trigger.
The inside VDD interface of described 64 ROM one-wire interface modules is located between the emitter of two diodes, and the transmitter of two diodes connects altogether.
Sensor provided by the invention, scene temperature have improved the anti-interference of system greatly directly with the digital form transmission of " one-wire bus ".Be fit to abominable scene temperature and measure, such as environment control, equipment or process control, thermometric class consumption electronic product etc.
Claims (3)
1. automobile temperature sensor, it is characterized in that, comprise CRC generator, buffer, storer, 64 ROM one-wire interface modules and power supply detector, described CRC generator docks with buffer, described buffer docks with storer, described storer docks with 64 ROM one-wire interface modules, and described 64 ROM one-wire interface modules are docked with the power supply detector.
2. automobile temperature sensor as claimed in claim 1 is characterized in that, described buffer comprises temperature sense probe, upper limit trigger, lower limit trigger.
3. automobile temperature sensor as claimed in claim 1 is characterized in that, the inside VDD interface of described 64 ROM one-wire interface modules is located between the emitter of two diodes, and the transmitter of two diodes connects altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104675505A CN102967391A (en) | 2012-11-19 | 2012-11-19 | Temperature sensor for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104675505A CN102967391A (en) | 2012-11-19 | 2012-11-19 | Temperature sensor for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102967391A true CN102967391A (en) | 2013-03-13 |
Family
ID=47797686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104675505A Pending CN102967391A (en) | 2012-11-19 | 2012-11-19 | Temperature sensor for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102967391A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388134A (en) * | 1993-02-05 | 1995-02-07 | Dallas Semiconductor Corporation | Integrated circuit thermometer |
| US5638418A (en) * | 1993-02-05 | 1997-06-10 | Dallas Semiconductor Corporation | Temperature detector systems and methods |
| CN1664521A (en) * | 2004-03-02 | 2005-09-07 | 中国人民解放军军事医学科学院卫生装备研究所 | Temperature measurement system and method |
-
2012
- 2012-11-19 CN CN2012104675505A patent/CN102967391A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388134A (en) * | 1993-02-05 | 1995-02-07 | Dallas Semiconductor Corporation | Integrated circuit thermometer |
| US5638418A (en) * | 1993-02-05 | 1997-06-10 | Dallas Semiconductor Corporation | Temperature detector systems and methods |
| CN1664521A (en) * | 2004-03-02 | 2005-09-07 | 中国人民解放军军事医学科学院卫生装备研究所 | Temperature measurement system and method |
Non-Patent Citations (2)
| Title |
|---|
| 农静,郑宗亚,刘志杰: "单总线数字温度传感器DS18B20原理及应用", 《贵州师范大学学报（自然科学版）》, vol. 25, no. 3, 31 August 2007 (2007-08-31) * |
| 李群生,徐剑芸,鲁浩: "DS1820数字温度传感器在惯性组件测温系统中的应用", 《航空兵器》, 30 October 2006 (2006-10-30), pages 23 - 26 * |
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Application publication date: 20130313 |