CN202421809U - Unattended information acquirer - Google Patents
Unattended information acquirer Download PDFInfo
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- CN202421809U CN202421809U CN2012200158505U CN201220015850U CN202421809U CN 202421809 U CN202421809 U CN 202421809U CN 2012200158505 U CN2012200158505 U CN 2012200158505U CN 201220015850 U CN201220015850 U CN 201220015850U CN 202421809 U CN202421809 U CN 202421809U
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Abstract
The utility model relates to an unattended information acquirer, which comprises a power part (comprising a main power supply, a standby power supply and an intelligent switching module), a clock circuit module, a sensor interface, a microprocessor, a universal serial bus (USB) control module and a USB flash disk. Full-automatic, long-term and high-capacity information acquisition can be finished under an unattended condition. The unattended information acquirer is used for meeting the requirements of low-cost, low-power consumption, high-semaphore and high-capacity extensible data storage, and the requirements of work in an outdoor places without a mains supply also can be met.
Description
Technical field
The utility model relates to a kind of information acquisition device, especially for the data acquisition under the unmanned situation.
Background technology
Traditional collector generally amplifies, handles the back with sampled signal to be stored data through corresponding communication bus and PC communication, has cost high, and mobility is poor, and power consumption is high, the shortcoming that is difficult to work reliably and with long-term; To be handled being transferred on the specified server with the GPRS wireless mode in addition by sampled signal through chip, the shortcoming of this mode is that system architecture is complicated, and it is higher to rent the radio communication line cost of need paying; Now had the instrument that has the stored record function to be easy to carry on the market and can carry out the short-term data storage, shortcoming is measuring-signal type single (like a voltage registering instrument) limited storage space, needs human intervention.
The utility model content
The utility model is to prior art problems, and a kind of information collecting device that can operation steady in a long-term under the unattended duty condition is provided, and is low-cost in order to satisfy, many semaphores, and the needs of the extendible data storage of high capacity can also be competent at the field work needs.
For realizing above-mentioned purpose, the scheme of the utility model is: a kind of unmanned information acquisition device, comprise MCU and the sensor interface that is used for sensor information is transferred to MCU, and said MCU also connects USB flash disk through the USB module.
Said MCU also is connected with clock module.
Said information acquisition device also is included as the power module of said MCU, USB module, sensor interface and clock module power supply.
Said power module comprises primary power and back-up source, and the input of primary power and back-up source is connected an intelligent handover module that is used to select primary power or back-up source are connected to the output terminal of power module.
Said primary power comprises and is used for civil power is converted into galvanic Switching Power Supply and/or solar panel; Said backup battery is an accumulator.
Said clock module is connected through spi bus with MCU.
Said sensor interface connects MCU through serial communication mode.
Said USB module connects MCU through parallel bus.
The utility model is owing to take above technical scheme, and it has the following advantages: can under the unattended duty condition, carry out information acquisition steady in a long-term.Civil power, the design of solar cell dual power supply can adapt to open-air no civil power occasion work.Sensor interface is that universal interface is supported the collection of many semaphores.The information data that collects comprises the current time characteristic, in order to distinguish the data of different time sections.The MCU data processed will write USB flash disk through the USB control module, simplify MCU operation and system's operation expense, and the information data storage medium is a USB flash disk, supports hot-swappable mode to change USB flash disk, and file system is that FAT32 supports capacity 32G and following USB flash disk at present.Data memory format is the EXCEL electronic form file of extension name .CSV in the USB flash disk, and with current system time as filename such as 20111214.csv, the convenient database that imports carries out Data Management Analysis.MCU takes low power dissipation design, can set the acquisition interval time, sets the idle period of time dormancy.The system design reliability is high, and regularly reset function is restarted automatically in system.
Description of drawings
Fig. 1 is the theory diagram of a kind of unmanned information acquisition device of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Collector as shown in Figure 1 comprises MCU and the sensor interface that is used for sensor information is transferred to MCU, and said MCU also connects USB flash disk through the USB module.Owing to adopt USB flash disk,, avoided wired and various shortcomings wireless communication mode so can store mass data.
Following mask body is introduced various piece among Fig. 1.
Primary power provides electric energy for information acquisition device; Primary power can adopt the 220V civil power to transfer the Switching Power Supply of direct current 10V/2A to when there is the 220V alternating current information acquisition device workplace, can not adopt 10V power for the 10W solar panel electric energy to be provided when having the civil power situation in the open air.(concrete power supply capacity, according to connection number of sensors type, real work situation factor is adjusted)
Back-up source is made up of storage battery charge controller, be primary power have a power failure or break down, during power down (solar cell is at night or cloudy day) normally move with assurance equipment.Major part is that accumulator adopts the 7.2V/5AH lithium ion polymer battery, is a kind of new type of safe rechargable battery capable of circulation, has to seal the advantage that safety is difficult for blast by the force density high-ductility.
In primary power when work, provide work energy for information acquisition device on the one hand, simultaneously since differential pressure action automatically to the charge in batteries in the back-up source; When the primary power power down, judge that by intelligent handover module seamless switching becomes the back-up source mode to supply power.It is in the frame 4,5,6,7 that intelligence handover module another effect direct current that to be voltage stabilizing carry primary power and back-up source is exported the 5V direct supply through low pressure differential voltage stabilizing chip AMS1117,8 module for power supply.
It is that total system provides accurate clock that this instance of clock module adopts DS1302; DS1302 is a kind of high-performance low-power-consumption of U.S. DALLAS company release, the real time clock circuit of band RAM; It can to year, the moon, day, Sunday, the time, branch, second carry out timing; Have the leap year compensate function, WV is 2.5V～5.5V.Be connected with microprocessor through spi bus, have the low-power consumption real time clock circuit of the thin current charges ability of tiny stream, electric current is 2 μ A (representative value) during show state, during battery saving mode less than 1 μ A.Be furnished with 3V button cell power supply in support, under the situation that primary power cuts out, also can keep the continuous operation of clock.
For complicated operation degree and the system resource overhead of simplifying microprocessor adopts the USB control module that the data in the USB flash disk are carried out read-write operation, this instance adopts the CH376S file management control chip of WCH company.CH376 supports USB DeviceMode and USB host mode; And the built-in basic firmware of USB communications protocol; The built-in firmware support USB memory device commonly used of handling the special communication protocol of Mass-Storage mass memory unit; On the compatible society at present 99% USB flash disk (can upgrade the upgrading that firmware provides new flash disk) built-in the managed firmware of FAT32 file system support the USB flash disk of capacity, the compatible USB2.0 interface of USB communication at full speed up to 32GB.CH376 supports three kinds of communication interfaces: 8 bit parallel mouths, SPI interface or asynchronous serial port; Controllers such as single-chip microcomputer/DSP/MCU/MPU can be through above-mentioned any communication interface control CH376 chip, the file in the access U dish or with the computing machine communication.This instance microprocessor MCU writes flash disk through 8 bit parallel mouths control CH376 chip with the information data that collects.What select for use is the rotary USB flash disk of Jin Shidun kingston DT101 8G.
Sensor interface is universal interface, like I
2C, SPI, UART etc. connect through respective bus and microprocessor can expand the relevant sensor of connection the type.That this instance adopts is 2 I
2The sensor of C interface, Temperature Humidity Sensor AM2301 digital hygro sensor are a humiture compound sensors of calibrating digital signal output that contains.BH1750FVI is a kind of numeric type light intensity sensor integrated circuit that is used for the twin wire serial bus interface.This integrated circuit can be adjusted the brightness of liquid crystal or keyboard backlight according to the light intensity data of collecting.Utilize its high resolving power can survey in a big way the intensity variation of (1lx-65535lx).Illumination, temperature, humidity be 3 by acquisition parameter.
This instance of microprocessor portion adopts the STC89C58 single-chip microcomputer, and STC89C58 is a kind of low-power consumption, high-performance CMOS 8 8-digit microcontrollers, has 32K at system programmable Flash storer.On single-chip, have 8 dexterous bit CPUs and, have following standard feature: the 32k bytes Flash at system programmable Flash; 32 I/O mouth lines, WatchDog Timer, three 16 bit timing device/counters; 2 grades of interrupt structures of one 6 vector, the full duplex serial port.STC89X58 can reduce to the operation of 0Hz static logic in addition, supports 2 kinds of softwares can select energy-saving mode.Under the idle pulley, CPU quits work, and allows RAM, timer/counter, serial ports, interruption to work on.Under the power down protection mode, the RAM content is preserved, and oscillator is freezed, and all work of single-chip microcomputer stop, till next one interruption or hardware reset.In view of above program's memory space is big, application system is flexible, characteristics of high efficiency has adopted this microprocessor, corresponding supporting crystal oscillator work working frequency 12Mhz.
The concrete course of work:
Need before the collector work to be connected to PC through the acquisition interval time of software to collector is set through the RS232 serial port, dormancy time, system restarts reset time automatically, waits to be provided with.Per 5 minutes all the other idle period of time collector entering low-power consumption dormant states of once sampling of this instance treat that next sampling period arrival wakes up.Work in 7X24 hour, system restarts automatically in 0 o'clock morning of every day and resets.
Master switch is opened back primary power (1) and is obtained the 5V DC voltage through intelligent handover module (3) voltage stabilizing; Also be the charge in batteries in (2) back-up source simultaneously.The back clock module (4) that powers on switches to 5V direct current supply by carrying the 3V button cell.USB module (7) power-up initializing file system is the FAT32 mode, with the microprocessor communication be 8 passive parallel buss, the initialization communications protocol connects USB flash disk with the USB2.0 mode, waits for that microprocessor (5) sends corresponding read write command.
At first send read command to clock module (4) after microprocessor (5) powers on and read the current time through spi bus, judge the current time whether be dormancy time if not, scanning sensor interface (6) I
2Optical sensor BH1750FVI on the C bus and Temperature Humidity Sensor AM2301
And read respective value and be sent to USB module (7) through parallel bus and judge whether earlier that before USB flash disk is write file EXCEL electronic form file with the file of current date name such as 20111214.csv is if having; Then open file; Write the value of information that collects by format classification, current acquisition time hour divides; Second, if do not create file.Close file after the write operation realizes through USB module (7) the read-write operation of USB flash disk.Single-chip microcomputer sends dormancy instruction sensor, USB module and microprocessor and gets into the next sampling period arrival of low power consumpting state wait after the sampling period end, repeats above-mentioned information acquisition and writes work.
What above instance was cited only is preferred embodiment of the utility model.Obviously the utility model is not limited to above examples of implementation, every in content disclosed in the utility model with the distortion of being associated and to any modification that present embodiment is done, be equal to replacement etc., all still be included within the protection domain of the utility model.
Claims (8)
1. a unmanned information acquisition device comprises MCU and the sensor interface that is used for sensor information is transferred to MCU, it is characterized in that said MCU also connects USB flash disk through the USB module.
2. a kind of unmanned information acquisition device according to claim 1 is characterized in that said MCU also is connected with clock module.
3. a kind of unmanned information acquisition device according to claim 2 is characterized in that, said information acquisition device also is included as the power module of said MCU, USB module, sensor interface and clock module power supply.
4. a kind of unmanned information acquisition device according to claim 3; It is characterized in that; Said power module comprises primary power and back-up source, and the input of primary power and back-up source is connected an intelligent handover module that is used to select primary power or back-up source are connected to the output terminal of power module.
5. a kind of unmanned information acquisition device according to claim 4 is characterized in that, said primary power comprises and is used for civil power is converted into galvanic Switching Power Supply and/or solar panel; Said backup battery is an accumulator.
6. a kind of unmanned information acquisition device according to claim 2 is characterized in that said clock module is connected through spi bus with MCU.
7. a kind of unmanned information acquisition device according to claim 1 is characterized in that, said sensor interface connects MCU through serial communication mode.
8. a kind of unmanned information acquisition device according to claim 1 is characterized in that, said USB module connects MCU through parallel bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200158505U CN202421809U (en) | 2012-01-15 | 2012-01-15 | Unattended information acquirer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200158505U CN202421809U (en) | 2012-01-15 | 2012-01-15 | Unattended information acquirer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421809U true CN202421809U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200158505U Expired - Fee Related CN202421809U (en) | 2012-01-15 | 2012-01-15 | Unattended information acquirer |
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| Country | Link |
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| CN (1) | CN202421809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007713A (en) * | 2014-01-10 | 2014-08-27 | 国家电网公司 | Online transmission line tower assembly monitoring device |
-
2012
- 2012-01-15 CN CN2012200158505U patent/CN202421809U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007713A (en) * | 2014-01-10 | 2014-08-27 | 国家电网公司 | Online transmission line tower assembly monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20130115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |