CN201903879U - Data collector of SD card - Google Patents
Data collector of SD card Download PDFInfo
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- CN201903879U CN201903879U CN2010206957451U CN201020695745U CN201903879U CN 201903879 U CN201903879 U CN 201903879U CN 2010206957451 U CN2010206957451 U CN 2010206957451U CN 201020695745 U CN201020695745 U CN 201020695745U CN 201903879 U CN201903879 U CN 201903879U
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Abstract
The utility model relates to a data collector of an SD (Secure Digital) card, which comprises a temperature collection module, a master control module, an SD card interface module and an SD memory card, and is characterized in that the temperature collection module, the master control module, the SD card interface module and the SD memory card are sequentially connected. The temperature collection module is used for sending collected data after AD (Analog-Digital) conversion to the master control module, and the master control module is used for storing the collected data in the SD memory card through the SD card interface module after adding information of a time point.
Description
Technical field
The utility model relates to a kind of data collector, especially SD card data acquisition unit.
Background technology
Temperature data acquisition is often used at industrial circle.Traditional temperature data acquisition all is to carry out data presentation by instrument, but will save historical data, and checks on computers at any time and be not very convenient.
Summary of the invention
Existing data acquisition saves historical data and the deficiency of movability aspect in order to overcome, the utility model provides a kind of SD card data acquisition unit, this SD card data acquisition unit can be kept temperature data and the acquisition time point that collects by the SD card, and is convenient for carrying.
The technical scheme that its technical matters that solves the utility model adopts is: SD card data acquisition unit, comprise temperature collect module, main control module, SD card interface module, SD storage card, it is characterized in that: temperature collect module, main control module, SD card interface module, SD storage card connect successively.The data that temperature collect module collects after AD is changed are dealt into main control module, behind the main control module joining day dot information, by the SD card interface module data that collect are deposited in the SD storage card.
The beneficial effects of the utility model are, can be by preserving historical image data at any time, and data check that backup is convenient, simple in structure, with low cost.
Description of drawings
Fig. 1 is a theory diagram of the present utility model; Fig. 2 is an electric structural drawing of the present utility model.
Embodiment
In Fig. 1, SD card data acquisition unit comprises temperature collect module 1, main control module 2, SD card interface module 3, SD storage card 4, it is characterized in that: temperature collect module 1, main control module 2, SD card interface module 3, SD storage card 4 connect successively.The data that temperature collect module 1 collects after AD is changed are dealt into main control module 2, behind 2 joining day of the main control module dot information, by SD card interface module 3 data that collect are deposited in the SD storage card 4.
In Fig. 2, adopt SHT10 single-chip digital humiture integrated sensor.It adopts the little processing patented technology of CMOS process (CMOSens technology), guarantees that product has high reliability and outstanding long-time stability.This sensor is made up of 1 condenser type condensate hygrometric element and 1 energy gap formula temperature element, and with 1 14 A/D converter and 1 2-wire digital interface seamless combination in single-chip.Adopt the AT89S52 single-chip microcomputer of MCS251 framework.AT89S52 is a kind of low cost, low-power consumption, high performance CMOS 8 8-digit microcontrollers, has 8KB at system programmable Flash storer.Use AT89S52 read-write SD card, at first will determine the communication plan between them.The SD card has 2 kinds of optional communication protocols: SD pattern and SPI pattern.The SD pattern is the standard read-write mode of SD card, selects for use this pattern to need the MCU of select tape SD card control interface or extra SD card control units; The SPI pattern is finished communicating by letter of SD card and master controller by spi bus.Adopt the SPI communication pattern of SD card.Though AT89S52 does not have integrated SPI interface module yet, can simulate the SPI interface sequence with the mode of software.The problem that another one will solve is the level match of SD card and AT89S52.The logic level of SD card is equivalent to the Transistor-Transistor Logic level standard of 3.3V, and the logic level of AT89S52 is a 5V CMOS level.The principle that solves the level match problem has 2: the minimum value of a high level of exporting for the output level device should be identified as the minimum voltage value of high level greater than the incoming level device; Another is the maximum voltage value of output level device output low level, should be identified as low level maximum voltage value less than the incoming level device.Consider that SD is stuck under the SPI mode of operation, the transmission of data all is unidirectional, can adopt transistor to add the method for pull down resistor when the SD card transmits data at single-chip microcomputer like this.And when single-chip microcomputer transmits data, can adopt direct connection at the SD card, because the level between them just satisfies the compatible principle of above-mentioned level.
Claims (1)
1. SD card data acquisition unit, comprise temperature collect module (1), main control module (2), SD card interface module (3), SD storage card (4), it is characterized in that: temperature collect module (1), main control module (2), SD card interface module (3), SD storage card (4) connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206957451U CN201903879U (en) | 2010-12-29 | 2010-12-29 | Data collector of SD card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206957451U CN201903879U (en) | 2010-12-29 | 2010-12-29 | Data collector of SD card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903879U true CN201903879U (en) | 2011-07-20 |
Family
ID=44274471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206957451U Expired - Fee Related CN201903879U (en) | 2010-12-29 | 2010-12-29 | Data collector of SD card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903879U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420871A (en) * | 2011-12-02 | 2012-04-18 | 杭州电子科技大学 | Network data acquirer |
| CN102521422A (en) * | 2011-12-15 | 2012-06-27 | 复旦大学 | Temperature acquiring system based on USB (universal serial bus) storage equipment |
| CN105021221A (en) * | 2015-07-10 | 2015-11-04 | 安徽师范大学 | Distributed multi-terminal concurrent data acquisition and analysis system |
| CN108255747A (en) * | 2017-12-28 | 2018-07-06 | 深圳市泛海三江科技发展有限公司 | A kind of method and system of identification memory card |
-
2010
- 2010-12-29 CN CN2010206957451U patent/CN201903879U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420871A (en) * | 2011-12-02 | 2012-04-18 | 杭州电子科技大学 | Network data acquirer |
| CN102420871B (en) * | 2011-12-02 | 2014-01-29 | 杭州电子科技大学 | Network data acquirer |
| CN102521422A (en) * | 2011-12-15 | 2012-06-27 | 复旦大学 | Temperature acquiring system based on USB (universal serial bus) storage equipment |
| CN105021221A (en) * | 2015-07-10 | 2015-11-04 | 安徽师范大学 | Distributed multi-terminal concurrent data acquisition and analysis system |
| CN108255747A (en) * | 2017-12-28 | 2018-07-06 | 深圳市泛海三江科技发展有限公司 | A kind of method and system of identification memory card |
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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: 20110720 Termination date: 20111229 |