CN104750007A - Serial communication remote data acquisition system - Google Patents
Serial communication remote data acquisition system Download PDFInfo
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- CN104750007A CN104750007A CN201510157346.7A CN201510157346A CN104750007A CN 104750007 A CN104750007 A CN 104750007A CN 201510157346 A CN201510157346 A CN 201510157346A CN 104750007 A CN104750007 A CN 104750007A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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Abstract
The invention relates to a remote data acquisition system, in particular to a serial communication remote data acquisition system comprising a central processing unit and a data acquisition device. The data acquisition device is connected to the central processing unit through a signal processing unit; the input end of the central processing unit is connected to an input unit, the output end of the central processing unit is connected to a failure indicating unit, and the central processing unit is connected to an upper computer in a communication manner through a serial communication unit; the system further comprises a power supply module used for supplying power for the signal processing unit, the input unit, the failure indicating unit and the central processing unit. Thus, the data acquisition device acquires the required data information, the central processing unit transmits the data information to the central processing unit, and the central processing unit transmits the data information to the upper computer through the serial communication unit; according to the system, the data are acquired completely, and the impurity interference eliminating effect is fine.
Description
Technical field
The present invention relates to a kind of remote data acquisition system, particularly a kind of serial communication remote data acquisition system.
Background technology
Along with the widespread use of computing machine and the development of electronic technology, digital technology is widely used in the every field such as national economy, national defense construction and scientific experiment.Compare with simulation system, digital display circuit be high by precision, the series of advantages such as good stability, but have individual shortcoming to be exactly that it can only process discrete signal.Extraneous various tested measurement, as temperature, pressure, position etc., will convert the physical quantity such as voltage, electric current to by all kinds sensor.Because it is analog quantity that most of sensor exports physical quantity, thus needing to be converted to digital signal could by controller process.
Chinese invention patent CN 104199343A discloses a kind of miniature data acquisition system (DAS) based on Serial ATA mode, comprises signal pre-processing circuit, A/D change-over circuit, power supply and observation circuit, Micro-processor MCV, external memory storage and data communication interface; Described measured signal is transported to miniature data acquisition system (DAS) by signal pre-processing circuit; Described host computer is connected with Micro-processor MCV by data communication interface, completes further process and the display of data; Described signal pre-processing circuit adopts the two computing integrated amplifiers based on LM2904 chip; Described Micro-processor MCV adopts C8051F series monolithic as core processor, completes functions such as measured signal process, conversions; Described power supply and testing circuit adopt chip LM1117T-3.3 as source of stable pressure.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of remote data acquisition system adopting serial communication interface.
For solving above-mentioned technical matters, a kind of serial communication remote data acquisition system of the present invention comprises CPU (central processing unit) and data collector, described data collector is connected with CPU (central processing unit) by signal processing unit, described CPU (central processing unit) input end is connected with input block, described CPU (central processing unit) output terminal is connected with indicating fault unit, and described CPU (central processing unit) is communicated to connect by serial communication unit and host computer; Also comprise power module, described power module is powered to signal processing unit, input block, indicating fault unit and CPU (central processing unit).
Further, described serial communication unit comprises serial communication chip U1 and serial port P1, No. 11 pins of described serial communication chip U1 are connected with the TXD0 pin of CPU (central processing unit), No. 12 pins of described serial communication chip U1 are connected with the RXD0 pin of CPU (central processing unit), No. 10 pins of described serial communication chip U1 are connected with the nRTS0 pin of CPU (central processing unit), and No. 9 pins of described serial communication chip U1 are connected with the nRTS1 pin of CPU (central processing unit); No. 14 pins of described serial communication chip U1 are connected with No. 3 pins of serial port P1, No. 13 pins of described serial communication chip U1 are connected with No. 2 pins of serial port P1, No. 7 pins of described serial communication chip U1 are connected with No. 7 pins of serial port P1, and No. 8 pins of described serial communication chip U1 are connected with No. 8 pins of serial port P1.
Further, described signal processing unit comprises amplifier chip LM224, No. 3 pins of described LM224 are connected with data collector output terminal by resistance R1, No. 3 pins of described LM224 are by electric capacity C1 ground connection, the series circuit of described electric capacity C1 two ends parallel resistance R2 and electric capacity C2, No. 2 pins of described LM224 are connected with No. 1 pin, No. 1 pin of described LM224 is connected by No. 6 pins of resistance R3 and LM224, and No. 5 pins of described LM224 are by resistance R4 ground connection, and No. 6 pins of described LM224 are connected by No. 7 pins of resistance R9 and LM224, No. 7 pins of described LM224 are connected with No. 10 pins of LM224 with the series circuit of resistance R6 by electric capacity C3, by resistance R5 ground connection between described electric capacity C3 and resistance R6, No. 10 pins of described LM224 are by electric capacity C4 ground connection, No. 9 pins of described LM224 are connected with No. 8 pins of LM224, No. 8 pins of described LM224 are connected with CPU (central processing unit) by resistance R7, by electric capacity C5 ground connection between described resistance R7 and CPU (central processing unit), described resistance R7 is connected with power supply V1 by resistance R8 with between CPU (central processing unit), described power supply V1 is provided by power module.
Further, reversal connection diode D1 between No. 10 pins of described power supply V1 and LM224.
Further, described indicating fault unit comprises LED light, and described LED light positive pole is connected with power supply V2 by resistance, and described power supply V2 is provided by power module, described LED light negative pole is connected with CPU (central processing unit), and described power supply V2 is by electric capacity C6 ground connection.
Further, described data collector is sensor or camera.
Adopt after said structure, the data message needed for the present invention is gathered by data collector, is then transferred to CPU (central processing unit) by signal processing unit, CPU (central processing unit) by serial communication unit by the data remote transmission that gathers to host computer; Data acquisition of the present invention is complete, despumation interference effect is good.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the structured flowchart of a kind of serial communication remote data acquisition system of the present invention.
Fig. 2 is the circuit theory diagrams of signal processing unit of the present invention.
Fig. 3 is the circuit theory diagrams of serial communication unit of the present invention.
Fig. 4 is the circuit theory diagrams of indicating fault unit of the present invention.
In figure: 1 is CPU (central processing unit), 2 is data collector, and 3 is signal processing unit, and 4 is input block, and 5 is indicating fault unit, and 6 is power module, and 7 is serial communication unit, and 8 is host computer
Embodiment
As shown in Figure 1, a kind of serial communication remote data acquisition system of the present invention comprises CPU (central processing unit) 1 and data collector 2, and described data collector 2 is connected with CPU (central processing unit) 1 by signal processing unit 3.Here data collector 2 can be sensor or camera, amplifies process, be then transferred to CPU (central processing unit) 1 after data collector 2 image data data by signal processing unit 3 after being filtered out impurities.Described CPU (central processing unit) 1 input end is connected with input block 4, described CPU (central processing unit) 1 output terminal is connected with indicating fault unit 5, can arrange relevant configuration data by input block 4 like this, indicating fault unit 5 can indicate the malfunction of whole system.Described CPU (central processing unit) 1 is communicated to connect by serial communication unit 7 and host computer 8, and the data that data collector 2 gathers by CPU (central processing unit) 1 are transferred to host computer by serial communication unit 7.The present invention also comprises power module 6, and described power module 6 powers to signal processing unit 3, input block 4, indicating fault unit 5 and CPU (central processing unit) 1, and power module 6 provides 5V working power for chip here, and also providing V1 to be 2.5V, V2 is in addition 3.3V.
As shown in Figure 3, described serial communication unit comprises serial communication chip U1 and serial port P1, and serial communication chip U1 adopts chip MAX3232C here, and serial port P1 adopts DB9_COM.No. 11 pins of described serial communication chip U1 are connected with the TXD0 pin of CPU (central processing unit), No. 12 pins of described serial communication chip U1 are connected with the RXD0 pin of CPU (central processing unit), No. 10 pins of described serial communication chip U1 are connected with the nRTS0 pin of CPU (central processing unit), and No. 9 pins of described serial communication chip U1 are connected with the nRTS1 pin of CPU (central processing unit); No. 14 pins of described serial communication chip U1 are connected with No. 3 pins of serial port P1, No. 13 pins of described serial communication chip U1 are connected with No. 2 pins of serial port P1, No. 7 pins of described serial communication chip U1 are connected with No. 7 pins of serial port P1, and No. 8 pins of described serial communication chip U1 are connected with No. 8 pins of serial port P1.No. 16 pins of described serial communication chip U1 meet power supply V2, electric capacity C40 is connected with between No. 16 pins of described serial communication chip U1 and No. 2 pins, be connected with electric capacity C43 between No. 6 pins of described serial communication chip U1 and No. 15 pins, between No. 16 pins of described serial communication chip U1 and No. 15 pins, be connected with electric capacity C42.Be connected with electric capacity C41 between No. 1 pin of described serial communication chip U1 and No. 3 pins, between No. 4 pins of described serial communication chip U1 and No. 5 pins, be connected with electric capacity C44.
As shown in Figure 2, described signal processing unit comprises amplifier chip LM224, No. 3 pins of described LM224 are connected with data collector output terminal by resistance R1, No. 3 pins of described LM224 are by electric capacity C1 ground connection, the series circuit of described electric capacity C1 two ends parallel resistance R2 and electric capacity C2, carries out filtering by resistance R1, R2 and electric capacity C1, C2 like this.No. 2 pins of described LM224 are connected with No. 1 pin, No. 1 pin of described LM224 is connected by No. 6 pins of resistance R3 and LM224, and No. 5 pins of described LM224 are by resistance R4 ground connection, and No. 6 pins of described LM224 are connected by No. 7 pins of resistance R9 and LM224, No. 7 pins of described LM224 are connected with No. 10 pins of LM224 with the series circuit of resistance R6 by electric capacity C3, by resistance R5 ground connection between described electric capacity C3 and resistance R6, No. 10 pins of described LM224 are by electric capacity C4 ground connection, No. 9 pins of described LM224 are connected with No. 8 pins of LM224, No. 8 pins of described LM224 are connected with CPU (central processing unit) by resistance R7, by electric capacity C5 ground connection between described resistance R7 and CPU (central processing unit), described resistance R7 is connected with power supply V1 by resistance R8 with between CPU (central processing unit), described power supply V1 is provided by power module.Reversal connection diode D1 between No. 10 pins of described power supply V1 and LM224.
As shown in Figure 4, described indicating fault unit comprises LED light, and described LED light positive pole is connected with power supply V2 by resistance, and described power supply V2 is provided by power module, described LED light negative pole is connected with CPU (central processing unit), and described power supply V2 is by electric capacity C6 ground connection.
Although the foregoing describe the specific embodiment of the present invention; but those skilled in the art are to be understood that; these only illustrate; various changes or modifications can be made to present embodiment; and not deviating from principle and the essence of invention, protection scope of the present invention is only defined by the appended claims.
Claims (6)
1. a serial communication remote data acquisition system, comprise CPU (central processing unit) and data collector, it is characterized in that: described data collector is connected with CPU (central processing unit) by signal processing unit, described CPU (central processing unit) input end is connected with input block, described CPU (central processing unit) output terminal is connected with indicating fault unit, and described CPU (central processing unit) is communicated to connect by serial communication unit and host computer; Also comprise power module, described power module is powered to signal processing unit, input block, indicating fault unit and CPU (central processing unit).
2. according to a kind of serial communication teledata acquisition device according to claim 1, it is characterized in that: described serial communication unit comprises serial communication chip U1 and serial port P1, No. 11 pins of described serial communication chip U1 are connected with the TXD0 pin of CPU (central processing unit), No. 12 pins of described serial communication chip U1 are connected with the RXD0 pin of CPU (central processing unit), No. 10 pins of described serial communication chip U1 are connected with the nRTS0 pin of CPU (central processing unit), and No. 9 pins of described serial communication chip U1 are connected with the nRTS1 pin of CPU (central processing unit); No. 14 pins of described serial communication chip U1 are connected with No. 3 pins of serial port P1, No. 13 pins of described serial communication chip U1 are connected with No. 2 pins of serial port P1, No. 7 pins of described serial communication chip U1 are connected with No. 7 pins of serial port P1, and No. 8 pins of described serial communication chip U1 are connected with No. 8 pins of serial port P1.
3. according to a kind of serial communication teledata acquisition device according to claim 1, it is characterized in that: described signal processing unit comprises amplifier chip LM224, No. 3 pins of described LM224 are connected with data collector output terminal by resistance R1, No. 3 pins of described LM224 are by electric capacity C1 ground connection, the series circuit of described electric capacity C1 two ends parallel resistance R2 and electric capacity C2, No. 2 pins of described LM224 are connected with No. 1 pin, No. 1 pin of described LM224 is connected by No. 6 pins of resistance R3 and LM224, and No. 5 pins of described LM224 are by resistance R4 ground connection, and No. 6 pins of described LM224 are connected by No. 7 pins of resistance R9 and LM224, No. 7 pins of described LM224 are connected with No. 10 pins of LM224 with the series circuit of resistance R6 by electric capacity C3, by resistance R5 ground connection between described electric capacity C3 and resistance R6, No. 10 pins of described LM224 are by electric capacity C4 ground connection, No. 9 pins of described LM224 are connected with No. 8 pins of LM224, No. 8 pins of described LM224 are connected with CPU (central processing unit) by resistance R7, by electric capacity C5 ground connection between described resistance R7 and CPU (central processing unit), described resistance R7 is connected with power supply V1 by resistance R8 with between CPU (central processing unit), described power supply V1 is provided by power module.
4. according to a kind of serial communication teledata acquisition device according to claim 3, it is characterized in that: reversal connection diode D1 between No. 10 pins of described power supply V1 and LM224.
5. according to a kind of serial communication teledata acquisition device according to claim 1, it is characterized in that: described indicating fault unit comprises LED light, described LED light positive pole is connected with power supply V2 by resistance, described power supply V2 is provided by power module, described LED light negative pole is connected with CPU (central processing unit), and described power supply V2 is by electric capacity C6 ground connection.
6. according to a kind of serial communication teledata acquisition device according to claim 1, it is characterized in that: described data collector is sensor or camera.
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| CN201510157346.7A CN104750007A (en) | 2015-04-03 | 2015-04-03 | Serial communication remote data acquisition system |
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| CN201510157346.7A CN104750007A (en) | 2015-04-03 | 2015-04-03 | Serial communication remote data acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900340A (en) * | 2018-07-03 | 2018-11-27 | 北京睿至大数据有限公司 | IT O&M Automatic monitoring systems |
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| CN102022204A (en) * | 2010-05-18 | 2011-04-20 | 华南农业大学 | CAN bus based air-fuel ratio analyzing device for vehicle cylinder and analyzing method thereof |
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| CN103335715A (en) * | 2013-06-17 | 2013-10-02 | 成都荣耀科技有限公司 | System for monitoring temperature of high-tension switch cabinet |
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2015
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Patent Citations (8)
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| US6704717B1 (en) * | 1999-09-29 | 2004-03-09 | Ncr Corporation | Analytic algorithm for enhanced back-propagation neural network processing |
| CN1752981A (en) * | 2005-10-26 | 2006-03-29 | 东北大学 | Pnp high speed multichannel intelligent comprehensive data acquiring system |
| CN101533058A (en) * | 2009-04-24 | 2009-09-16 | 东北大学 | Power abnormal failure data analyzing device and diagnosing method |
| CN101710030A (en) * | 2009-04-29 | 2010-05-19 | 长沙学院 | System and method for testing performance of cross flow fan |
| CN201725422U (en) * | 2010-04-23 | 2011-01-26 | 北京友高教育科技有限公司 | Super data collection device |
| CN102022204A (en) * | 2010-05-18 | 2011-04-20 | 华南农业大学 | CAN bus based air-fuel ratio analyzing device for vehicle cylinder and analyzing method thereof |
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| CN108900340A (en) * | 2018-07-03 | 2018-11-27 | 北京睿至大数据有限公司 | IT O&M Automatic monitoring systems |
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