CN203573479U - Wireless data collecting device - Google Patents
Wireless data collecting device Download PDFInfo
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- CN203573479U CN203573479U CN201320714798.7U CN201320714798U CN203573479U CN 203573479 U CN203573479 U CN 203573479U CN 201320714798 U CN201320714798 U CN 201320714798U CN 203573479 U CN203573479 U CN 203573479U
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Abstract
The utility model relates to a data collecting device, and particularly relates to a wireless data collecting device comprising a sensor, a front-end processing circuit, a field programmable gata array (FPGA) module and an ARM module, wherein the output end of the sensor is connected with the input end of the front-end processing circuit; the output end of the front-end processing circuit is connected with the input end of the FPGA module; the output end of the FPGA module is connected with the ARM module. The structure adopts combination of FPGA and ARM as signal treatment and control, so that signal treatment is more efficient and accurate, signal real-time analysis can be carried out in a wireless or wired manner in signal analysis, and offline analysis also can be carried out after the data are stored by an SD (Secure Digital) card. Multiple devices are adopted, and also used as data storage modules; a power supply can supply electricity to a sensor, the problem of wiring difficulty under a complicated environment is solved, and meanwhile, an automatic calibrating circuit automatically calibrates the sensor signal, so that the accuracy of the signal is effectively improved.
Description
Technical field
The utility model relates to a kind of data collector, especially a kind of wireless data acquisition device.
Background technology
When the operational speed of a computer is advanced by leaps and bounds, when data processing and computing power are improved rapidly, when memory span increases without limitation, when mass memory is achieved, when the network bandwidth promotes again and again, transmission data are while becoming easy, it is found that with the development of these technology inharmonicly, and information acquisition and obtaining means are greatly backward.So, for the time wiring of solving data acquisition is complicated, be not suitable for the series of problems such as wiring at some environment, on the basis of cable data acquisition system, developed wireless data acquisition system.
Measuring technique has strict demand to environment, reliability, processing speed and precision.A lot of cable data harvesters in serious interference, connect up experiment scene loaded down with trivial details and be difficult to measure.And wireless data acquisition device framework is more single in the market, can only carry out again off-line analysis by save data, radio communication adopts RF-wise mostly in addition, at Efficiency and accuracy aspect acquisition process data, all has defect.
Utility model content
The purpose of this utility model is, provides that a kind of signal is processed more efficiently, wireless data acquisition device accurately.
The utility model solves the technical scheme that further technical matters adopts: a kind of wireless data acquisition device, comprise sensor, front-end processing circuit, FPGA module, ARM module, the output terminal of sensor is connected with the input end of front-end processing circuit, the output terminal of front-end processing circuit is connected with the input end of FPGA module, and the output terminal of FPGA module is connected with ARM module.
Of the present utility modelly further be set to: also comprise that wired link block, two-way communication wireless connections module, memory module, USB are from mouth, wired connection module, two-way communication wireless connections module, memory module, USB connect with ARM module respectively from mouth.
Of the present utility modelly further be set to: described memory module comprises SD card, Nandflash, SDRAM, and SD card, Nandflash, SDRAM are connected with ARM module respectively.
Of the present utility modelly further be set to: front-end processing circuit comprises auto-calibration circuits and AD sample circuit, auto-calibration circuits is as the input end of front-end processing circuit, AD sample circuit is as the output terminal of front-end processing circuit, and the output terminal of auto-calibration circuits is connected with the input end of AD sample circuit.
Of the present utility modelly further be set to: also comprise power supply, sensor, front-end processing circuit, FPGA module, ARM module are connected with power supply respectively.
Said structure has adopted FPGA and ARM combination to process and control as signal, signal is processed more efficient, accurate, during signal analysis, both can carry out Signal online analysis by wireless or wired mode, also can be by carrying out again off-line analysis after SD card save data, also adopt multiple memory devices, also can be used as data memory module, power supply can also be powered to sensor, the problem of solution difficult wiring under complex environment, auto-calibration circuits has carried out automatic calibration to sensor signal simultaneously, effectively raises the degree of accuracy of signal.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the theory diagram of the present embodiment;
Fig. 2 is the theory diagram of front-end processing circuit;
Fig. 3 is ARM module and the peripheral theory diagram connecting thereof;
Embodiment
With reference to figure 1, Fig. 2, Fig. 3 is known, and a kind of wireless data acquisition device of the utility model, comprises sensor, front-end processing circuit, FPGA module, ARM module, the output terminal of sensor is connected with the input end of front-end processing circuit, and the output terminal of front-end processing circuit is connected with the input end of FPGA module, and the output terminal of FPGA module is connected with ARM module, two-way communication wireless connections module, sensor, front-end processing circuit, FPGA module, ARM module is connected with power supply respectively, and power supply can be the electric energy storage device of battery class, wired connection module, two-way communication wireless connections module, memory module, USB connects with ARM module respectively from mouth, and described memory module comprises SD card, Nandflash, SDRAM, SD card, Nandflash, SDRAM is connected with ARM module respectively, and front-end processing circuit comprises auto-calibration circuits and AD sample circuit, auto-calibration circuits is as the input end of front-end processing circuit, AD sample circuit is as the output terminal of front-end processing circuit, and the output terminal of auto-calibration circuits is connected with the input end of AD sample circuit.
In the utility model, FPGA is field programmable gate array, is a kind of semiconductor element; ARM is a kind of microprocessor; Nandflash is a kind of flash internal memory; SDRAM is a kind of storer, is the proprietary term in industry.
In the utility model, sensor signal is first passed through front-end processing, front-end processing circuit comprises auto-calibration circuits and AD sample circuit, auto-calibration circuits can effectively be removed undesired signal part, AD sample circuit adopts 24 high precision, the AD sampling A/D chip of control able to programme, sampling rate can regulate by program control, the each passage capable of being of high sampling rate reaches 4.8KHz, after sampling processing, signal enters FPGA process chip (FPGA module), FPGA module receives after the signal of AD sample circuit, send look-at-me to ARM module, ARM module receives signal again from FPGA module, FPGA module is except processing AD sample circuit signal, also receive the signal that ARM module sends, can control the sampling rate of AD chip (AD sample circuit).
And ARM module periphery consists of from mouth, Nandflash and SDRAM SD card, wired connection module, two-way communication wireless connections module, USB.The main data of being responsible for receiving the transmission of FPGA module, be stored in after treatment in SD card, when without SD card, also can be stored in NANDFLASH, SDRAM storer is for setting program storehouse and deposit various variablees, it is the SDRAM storer by two 16 bit data width, by parallel connection, become the SDRAM storage system of 32 bit data width, SDRAM is that a kind of memory device of the prior art exists, and USB is set from mouth, ARM module, with regard to integrated USB controller, is supported USBHost and USBDevice, supports low speed and USB device at full speed.The main mouth of USB is used for connecting wireless data transmission module, is used for connecting computer debugs from mouth.Two-way communication wireless connections module communication mode is divided into wifi communication and serial ports radio communication, can switch, wired connection module can be sent to PC analysis in real time by measurement data, and the data that simultaneously also SD card can be preserved are directly sent in PC by network interface.
Therefore the utility model far away at wire transmission signal distance, be disturbed Measurement and analysis serious, experiment scene that connect up loaded down with trivial details, can monitor strain, acceleration, displacement, pressure, power, loading, etc. multiple physical quantity.By wifi and two kinds of wireless two-way communication patterns of radio frequency, carry out Long-distance Control, and client can long-range switching select two kinds of wireless mode of operations.Adopt FPGA and ARM combination to process and control as signal, made signal processing more efficiently, precisely.During signal analysis, both can carry out Signal online analysis by wifi or network interface, also can be by carrying out again off-line analysis after SD card save data.Device has adopted jumbo flash chip, also can be used as data memory module.Device can also be powered to sensor, the problem of solution difficult wiring under complex environment, sensor signal has been carried out to automatic calibration simultaneously, effectively raised the degree of accuracy of signal, certainly the utility model can many detects simultaneously, controls and measures.
Obviously, above-described embodiment is only used to done giving an example is clearly described, and the not restriction to embodiment.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being extended out thus or variation are still in protection domain of the present utility model.
Claims (6)
1. a wireless data acquisition device, it is characterized in that: comprise sensor, front-end processing circuit, FPGA module, ARM module, the output terminal of sensor is connected with the input end of front-end processing circuit, the output terminal of front-end processing circuit is connected with the input end of FPGA module, and the output terminal of FPGA module is connected with ARM module.
2. according to wireless data acquisition device claimed in claim 1, it is characterized in that: also comprise that wired link block, two-way communication wireless connections module, memory module, USB are from mouth, wired connection module, two-way communication wireless connections module, memory module, USB connect with ARM module respectively from mouth.
3. according to wireless data acquisition device claimed in claim 2, it is characterized in that: described memory module comprises SD card, Nandflash, SDRAM, SD card, Nandflash, SDRAM are connected with ARM module respectively.
4. according to the wireless data acquisition device described in claim 1 or 2 or 3, it is characterized in that: front-end processing circuit comprises auto-calibration circuits and AD sample circuit, auto-calibration circuits is as the input end of front-end processing circuit, AD sample circuit is as the output terminal of front-end processing circuit, and the output terminal of auto-calibration circuits is connected with the input end of AD sample circuit.
5. according to the wireless data acquisition device described in claim 1 or 2 or 3, it is characterized in that: also comprise power supply, sensor, front-end processing circuit, FPGA module, ARM module are connected with power supply respectively.
6. according to wireless data acquisition device claimed in claim 4, it is characterized in that: also comprise power supply, sensor, front-end processing circuit, FPGA module, ARM module are connected with power supply respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714798.7U CN203573479U (en) | 2013-11-14 | 2013-11-14 | Wireless data collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714798.7U CN203573479U (en) | 2013-11-14 | 2013-11-14 | Wireless data collecting device |
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| Publication Number | Publication Date |
|---|---|
| CN203573479U true CN203573479U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320714798.7U Expired - Fee Related CN203573479U (en) | 2013-11-14 | 2013-11-14 | Wireless data collecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202523A (en) * | 2016-03-18 | 2017-09-26 | 南京理工大学 | A kind of high overload recorder of high sampling rate massive store |
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2013
- 2013-11-14 CN CN201320714798.7U patent/CN203573479U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202523A (en) * | 2016-03-18 | 2017-09-26 | 南京理工大学 | A kind of high overload recorder of high sampling rate massive store |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 |
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| CF01 | Termination of patent right due to non-payment of annual fee |