CN202403738U - Dynamic data acquisition device - Google Patents
Dynamic data acquisition device Download PDFInfo
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- CN202403738U CN202403738U CN2012200082826U CN201220008282U CN202403738U CN 202403738 U CN202403738 U CN 202403738U CN 2012200082826 U CN2012200082826 U CN 2012200082826U CN 201220008282 U CN201220008282 U CN 201220008282U CN 202403738 U CN202403738 U CN 202403738U
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Abstract
The utility model relates to a dynamic data acquisition device, in particular to a data acquisition device based on a strain type force or the force of a strain sensor or strain, which belongs to the technical field of health monitoring of civil structures. The dynamic data acquisition device comprises a processor, a peripheral circuit of the processor, a data storage circuit, a constant current source exciting circuit, an A/D (analog/digital) acquisition circuit, a signal amplifying and filtering circuit, a serial interface circuit, a sensor interface circuit and a power circuit. The peripheral circuit comprises an external sensor, an external power supply and an upper computer, wherein the external sensor is an electric bridge sensor. The dynamic data acquisition device is simple in structure, low in cost and convenient in application, high-speed sampling at the highest frequency of 250Hz can be realized, more reliable dynamic test is facilitated, the sampling frequency can be changed, and a system can enter a low power mode when in idle.
Description
Technical field
The utility model relates to a kind of Dynamic Data Acquiring device, and particularly a kind of data collector of the power/strain based on strain-type power/strain transducer belongs to civil structure health monitoring technical field.
Background technology
The assessment of civil structure dynamic test is the important means of understanding the structure kinematic behavior, grasping structure dynamic response under the operation loading condition.Through time domain, frequency-domain analysis, can make analysis and judgement to the operation state now of structure, normal serviceable life and aspects such as whether the structure edge-restraint condition changes, disease situation to the dynamic response of structure.
Structure body dynamic test has been used very extensively both at home and abroad, and a lot of large structures have all been installed the Dynamic Data Acquiring device, but present device has following deficiency:
1. SF is low excessively, and conventional device adopts the A/D acquisition chip of serial communication protocol mostly, is limited by the influence of serial communication speed, and the SF of existing apparatus generally has only 20Hz;
2. one-way communication, conventional device only possesses the one-way communication function of image data mostly, can't when test needs, carry out the adjusting of SF, can't when the system works space, auto sleep reduce power consumption.
The utility model content
The purpose of the utility model is in order to overcome the defective of above-mentioned prior art, can to carry out high speed dynamic test to structure, proposed a kind of Dynamic Data Acquiring device more convenient, energy-conservationly.
The purpose of the utility model realizes through following technical scheme.
A kind of Dynamic Data Acquiring device of the utility model; Comprise processor and processor peripheral circuit, data-carrier store circuit, constant current source exciting circuit, A/D Acquisition Circuit, signal amplification and filtering circuit, serial interface circuit, sensor interface circuitry and power circuit; Its peripheral circuit is external sensor, externally fed power supply and host computer, and external sensor is the bridge type sensor;
Sensor interface circuitry links to each other with external sensor through four signal wires, and wherein two lines are used for to external sensor exciting current being provided, and two lines are used to obtain the voltage signal of external sensor output in addition;
The constant current source exciting circuit provides exciting current through sensor interface circuitry to external sensor, and through changing the pull-up resistor resistance in the constant current source exciting circuit, the size of scalable load current is to adapt to the external sensor of different model;
Signal amplifies with filtering circuit and carries out signal amplification and Filtering Processing through the voltage of sensor interface circuitry reception external sensor output and to this voltage; Voltage signal processed is sent into the input end of A/D Acquisition Circuit; The A/D Acquisition Circuit links to each other with processor with control bus through data bus, address bus; The A/D Acquisition Circuit converts the analog voltage signal of importing into digital signal through the A/D conversion, and digital signal is sent into processor;
The data-carrier store circuit is a volatile memory, links to each other with processor with address bus through data bus, is used for the data that interim storage of processor receives;
Processor links to each other with host computer through serial interface circuit; Be used for the data upload of processor dynamic acquisition is carried out subsequent treatment to host computer; Be used for processor simultaneously and receive the adjusting SF that host computer sends or the steering order of dormancy; Processor will be according to this instruction through the SF of address bus with control bus adjustment A/D Acquisition Circuit after receiving the steering order of the adjusting SF that host computer sends, and processor receives controls self after the dormancy steering order that host computer sends and the A/D Acquisition Circuit gets into low-power consumption mode together;
Power circuit be input as the externally fed power supply, power circuit is output as constant current source exciting circuit, A/D Acquisition Circuit, data-carrier store circuit, signal amplification and filtering circuit, serial interface circuit, sensor interface circuitry power supply;
Above-mentioned host computer is the desktop computer or the notebook computer of band serial ports;
Above-mentioned A/D Acquisition Circuit is parallel A/D Acquisition Circuit.
A kind of Dynamic Data Acquiring device of the utility model, its work cross into:
1) processor receives the steering order that host computer sends through serial interface circuit;
2) processor through the SF of control bus and address bus adjustment A/D Acquisition Circuit, and starts the A/D Acquisition Circuit according to the steering order of host computer transmission;
3) voltage signal of external sensor output amplifies and filtering circuit through the sensor interface circuitry entering signal, and the analog voltage signal after signal amplification and filtering circuit are handled is sent into the A/D Acquisition Circuit;
4) after processor judges that through control bus the completion of A/D Acquisition Circuit is sampled, read the data value after the A/D Acquisition Circuit is carried out the A/D conversion through data bus;
5) processor carries out the FIR Filtering Processing with data value, and deposits the data value after the Filtering Processing in the data-carrier store circuit on the one hand, sends host computer to through serial interface circuit on the other hand;
6) if receive the dormancy instruction that host computer transmits, processor is then controlled the A/D Acquisition Circuit and is got into low-power consumption mode.
Beneficial effect
The utility model is simple in structure, cost is low, convenient in application; Can carry out high-speed sampling (reaching as high as 250Hz) through parallel A/D, conveniently carry out dynamic test more reliably; When system needs, can change SF; When the system space, can let system get into low-power consumption mode.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment
A kind of Dynamic Data Acquiring device; As shown in Figure 1; Comprise processor and processor peripheral circuit, data-carrier store circuit, constant current source exciting circuit, A/D Acquisition Circuit, signal amplification and filtering circuit, serial interface circuit, sensor interface circuitry and power circuit; Its peripheral circuit is external sensor, externally fed power supply and host computer, and external sensor is the bridge type sensor;
Sensor interface circuitry links to each other with external sensor through four signal wires, and wherein two lines are used for to external sensor exciting current being provided, and two lines are used to obtain the voltage signal of external sensor output in addition;
The constant current source exciting circuit provides exciting current through sensor interface circuitry to external sensor, and through changing the pull-up resistor resistance in the constant current source exciting circuit, the size of scalable load current is to adapt to the external sensor of different model;
Signal amplifies with filtering circuit and carries out signal amplification and Filtering Processing through the voltage of sensor interface circuitry reception external sensor output and to this voltage; Voltage signal processed is sent into the input end of A/D Acquisition Circuit; The A/D Acquisition Circuit links to each other with processor with control bus through data bus, address bus; The A/D Acquisition Circuit converts the analog voltage signal of importing into digital signal through the A/D conversion, and digital signal is sent into processor;
The data-carrier store circuit is a volatile memory, links to each other with processor with address bus through data bus, is used for the data that interim storage of processor receives;
Processor links to each other with host computer through serial interface circuit; Be used for the data upload of processor dynamic acquisition is carried out subsequent treatment to host computer; Be used for processor simultaneously and receive the adjusting SF that host computer sends or the steering order of dormancy; Processor will be according to this instruction through the SF of address bus with control bus adjustment A/D Acquisition Circuit after receiving the steering order of the adjusting SF that host computer sends, and processor receives controls self after the dormancy steering order that host computer sends and the A/D Acquisition Circuit gets into low-power consumption mode together;
Power circuit be input as the externally fed power supply, power circuit is output as constant current source exciting circuit, A/D Acquisition Circuit, data-carrier store circuit, signal amplification and filtering circuit, serial interface circuit, sensor interface circuitry power supply;
Above-mentioned host computer is the notebook computer of band serial ports;
Above-mentioned A/D Acquisition Circuit is parallel A/D Acquisition Circuit;
Above-mentioned processor is PIC33FJ64GP206;
Above-mentioned constant current source is REF191;
The master chip of above-mentioned A/D Acquisition Circuit is LTC2391.
The work of above-mentioned Dynamic Data Acquiring device is crossed and is:
1) processor receives the steering order that host computer sends through serial interface circuit;
2) processor through the SF of control bus and address bus adjustment A/D Acquisition Circuit, and starts the A/D Acquisition Circuit according to the steering order of host computer transmission;
3) voltage signal of external sensor output amplifies and filtering circuit through the sensor interface circuitry entering signal, and the analog voltage signal after signal amplification and filtering circuit are handled is sent into the A/D Acquisition Circuit;
4) after processor judges that through control bus the completion of A/D Acquisition Circuit is sampled, read the data value after the A/D Acquisition Circuit is carried out the A/D conversion through data bus;
5) processor carries out the FIR Filtering Processing with data value, and deposits the data value after the Filtering Processing in the data-carrier store circuit on the one hand, sends host computer to through serial interface circuit on the other hand;
6) if receive the dormancy instruction that host computer transmits, processor is then controlled the A/D Acquisition Circuit and is got into low-power consumption mode.
The above is the preferred embodiment of the utility model, and the utility model should not be confined to the disclosed content of this embodiment and accompanying drawing.Everyly do not break away from the equivalence of accomplishing under the spirit disclosed in the utility model or revise, all fall into the scope of the utility model protection.
Claims (1)
1. Dynamic Data Acquiring device, its peripheral circuit is external sensor, externally fed power supply and host computer, external sensor is the bridge type sensor, it is characterized in that:
Comprise processor and processor peripheral circuit, data-carrier store circuit, constant current source exciting circuit, A/D Acquisition Circuit, signal amplification and filtering circuit, serial interface circuit, sensor interface circuitry and power circuit;
Sensor interface circuitry links to each other with external sensor through four signal wires, and wherein two lines are used for to external sensor exciting current being provided, and two lines are used to obtain the voltage signal of external sensor output in addition;
The constant current source exciting circuit provides exciting current through sensor interface circuitry to external sensor, through changing the size of the pull-up resistor resistance regulating load electric current in the constant current source exciting circuit;
Signal amplifies with filtering circuit and carries out signal amplification and Filtering Processing through the voltage of sensor interface circuitry reception external sensor output and to this voltage; Voltage signal processed is sent into the input end of A/D Acquisition Circuit; The A/D Acquisition Circuit links to each other with processor with control bus through data bus, address bus; The A/D Acquisition Circuit converts the analog voltage signal of importing into digital signal through the A/D conversion, and digital signal is sent into processor;
The data-carrier store circuit is a volatile memory, links to each other with processor with address bus through data bus, is used for the data that interim storage of processor receives;
Processor links to each other with host computer through serial interface circuit, is used for the data upload of processor dynamic acquisition is carried out subsequent treatment to host computer, is used for the adjusting SF that processor reception host computer sends or the steering order of dormancy simultaneously;
Power circuit be input as the externally fed power supply, power circuit is output as constant current source exciting circuit, A/D Acquisition Circuit, data-carrier store circuit, signal amplification and filtering circuit, serial interface circuit, sensor interface circuitry power supply;
Above-mentioned host computer is the desktop computer or the notebook computer of band serial ports;
Above-mentioned A/D Acquisition Circuit is parallel A/D Acquisition Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200082826U CN202403738U (en) | 2012-01-10 | 2012-01-10 | Dynamic data acquisition device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200082826U CN202403738U (en) | 2012-01-10 | 2012-01-10 | Dynamic data acquisition device |
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| CN202403738U true CN202403738U (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200082826U Expired - Lifetime CN202403738U (en) | 2012-01-10 | 2012-01-10 | Dynamic data acquisition device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914690A (en) * | 2012-10-09 | 2013-02-06 | 中国电力科学研究院 | High-speed and high-precision data acquisition system with ultralow power consumption |
| CN104299392A (en) * | 2014-11-07 | 2015-01-21 | 智性科技南通有限公司 | Wireless sensing node for monitoring health of building structure |
| WO2015078143A1 (en) * | 2013-11-29 | 2015-06-04 | 华为技术有限公司 | Data collection method and device |
| CN105374196A (en) * | 2014-08-27 | 2016-03-02 | 武汉普创数码科技有限公司 | Data acquisition device and system based on six-component wheel force transducer |
| CN106264541A (en) * | 2015-05-12 | 2017-01-04 | 腾讯科技（深圳）有限公司 | Motion sensor control method, device and mobile terminal |
| CN106871960A (en) * | 2017-01-17 | 2017-06-20 | 广州市建设工程质量安全检测中心 | A kind of building intelligence wireless monitor system and method |
| CN112037494A (en) * | 2020-08-05 | 2020-12-04 | 中车工业研究院有限公司 | Wireless vibration data acquisition device |
| CN113176056A (en) * | 2021-03-31 | 2021-07-27 | 中煤科工集团重庆研究院有限公司 | Energy-saving device and method for monitoring concrete stress strain |
-
2012
- 2012-01-10 CN CN2012200082826U patent/CN202403738U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914690A (en) * | 2012-10-09 | 2013-02-06 | 中国电力科学研究院 | High-speed and high-precision data acquisition system with ultralow power consumption |
| WO2015078143A1 (en) * | 2013-11-29 | 2015-06-04 | 华为技术有限公司 | Data collection method and device |
| CN105374196A (en) * | 2014-08-27 | 2016-03-02 | 武汉普创数码科技有限公司 | Data acquisition device and system based on six-component wheel force transducer |
| CN104299392A (en) * | 2014-11-07 | 2015-01-21 | 智性科技南通有限公司 | Wireless sensing node for monitoring health of building structure |
| CN106264541A (en) * | 2015-05-12 | 2017-01-04 | 腾讯科技（深圳）有限公司 | Motion sensor control method, device and mobile terminal |
| CN106871960A (en) * | 2017-01-17 | 2017-06-20 | 广州市建设工程质量安全检测中心 | A kind of building intelligence wireless monitor system and method |
| CN112037494A (en) * | 2020-08-05 | 2020-12-04 | 中车工业研究院有限公司 | Wireless vibration data acquisition device |
| CN113176056A (en) * | 2021-03-31 | 2021-07-27 | 中煤科工集团重庆研究院有限公司 | Energy-saving device and method for monitoring concrete stress strain |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |