CN1210569C - Data processing system for in-line monitor of environment - Google Patents
Data processing system for in-line monitor of environment Download PDFInfo
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- CN1210569C CN1210569C CNB011062452A CN01106245A CN1210569C CN 1210569 C CN1210569 C CN 1210569C CN B011062452 A CNB011062452 A CN B011062452A CN 01106245 A CN01106245 A CN 01106245A CN 1210569 C CN1210569 C CN 1210569C
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Abstract
The present invention relates to a data processing system for on-line monitoring of environment, which can be used for monitoring water quality and smoke gas and can meet the communication of telenets / local area networks. The data processing system for on-line monitoring of environment comprises a display circuit, a watchdog reset circuit, a clock circuit, a memory circuit, a key processing circuit, a printer interface circuit, an A/D measuring circuit, a photoelectric isolation relay interface circuit composed of an output interface of a dynamic calibration relay and an output interface of an alarm relay, a communication interface and a single-chip microcomputer, wherein the communication interface is used for remote communication and twisted pair networking through telephone wires so as to realize local communication; the single-chip microcomputer is connected with the circuit units, and is used for linear operation processing, measuring unit conversion, data processing and recording, dynamic calibration and alarm output of input signals.
Description
Technical field
The invention belongs to a kind of measurement mechanism, particularly a kind of data processing system for in-line monitor of environment.
Background technology
Environmental monitoring is a chief component in the environmental protection work, and environmental monitoring specifically is divided into atmosphere environment supervision, natural monitoring water environment, sewage discharge monitoring, toxic emission monitoring.Just product is in the market seen, a kind of is Shanghai Communications University, Xi'an exploitation " environmental supervision infosystem ", this system has satisfied its job requirement from the environmental supervision angle, but it has following deficiency: (1) its data processing is to be to handle at interval with the every day, the real-time that lacks Monitoring Data, therefore can not satisfy requirement of environmental management, more can not satisfy the requirement of environment field management and environmental pollution accident investigation.(2) again because this system does not have dynamic calibration control and corresponding data processing function thereof, can not satisfy the online request for utilization of current flue gas (atmosphere) measuring instrument.(3) monitoring project has determined that extremely newly-increased monitoring project can't add, and for example the water quality TOC monitoring project of increase etc. is drafted by country.Another kind is the network monitoring system of domestic other producer's exploitation, specifically is divided into water quality monitoring system, the flue gas monitoring system.Wherein the data processor as water quality monitoring does not all have dynamic calibration control and corresponding data processing capacity; Because its principle of work is complicated, each producer has all used industrial computer to finish this task as flue gas (atmosphere) data monitored processor.Therefore existing water monitoring data processor can not be finished the network monitor of flue gas (atmosphere), existing flue gas (atmosphere) data monitored processor is because the cost height, when being used for water quality monitoring, waste one's talent on a petty job, can't compete with existing water monitoring data processor, it is compared with flue gas (atmosphere) data processor that single-chip microcomputer is made and has the cost height equally simultaneously, use complexity, the shortcoming that the life-span is short.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, provide a kind of not only can carry out water quality monitoring, but also can carry out flue gas monitoring and with low cost, technical value added is high and install and safeguard easy, simple to operate, long service life, reliability height, not only can satisfy telecommunication, but also can satisfy the data processing system for in-line monitor of environment that the fieldbus networking requires.
This data processing system for in-line monitor of environment, comprise and be used for the display instrument system time, the parameter of measurement result and setting, the display circuit of alarm condition and dynamic calibration state, be used for finishing the electrification reset of complete machine and work as system and be interfered, automatically the watchdog reset circuit that resets again during system in case of system halt, when being used for that clock is walked continuously behind system cut-off, the clock circuit of the time of second timing interruption and data storage is provided, be used to store the storer that parameter and storage of measurement data are set, be used to the time of checking, measurement result, calibration result, manually boot calibration, manually print, the button treatment circuit of parameter is set, be used for regularly or manually print the printer interface circuit of measurement result, its special character is that it is used for the transient measurement result of measurement of concetration instrument is carried out the A/D metering circuit of mould/number conversion in addition; The photoelectric isolating relay interface circuit that constitutes by dynamic calibration relay output interface that is used for repeatedly kicking into action attitude calibration with the concentration measuring apparatus epiphase and the alarm relay output interface that links to each other with external alarm; Be used for carrying out the communication interface that telecommunication and twisted-pair feeder networking realize local communication by telephone wire networking, it also has a single-chip microcomputer that links to each other with the foregoing circuit unit, said single-chip microcomputer is used for the signal by the input of A/D metering circuit is carried out linear operation processing, measurement unit conversion, so that the display circuit result displayed is corresponding with the result of concentration detector table measurement; Simultaneously data are handled by the time interval value of averaging calculating, maximal value, the minimum value of the setting of clock circuit, surpass alarm setting value data recording and time keeping thereof, finish the zero point of measurement of concetration instrument, the calibration of scale by the time interval, the start-up time that are provided with by dynamic calibration relay output interface, record calibration result and the alignment time, and with the data of handling be put into the memory circuitry storage, by printer prints, carry out data remote by communication interface; When the measurement data of respective channel is connected external alarm by the alarm relay output interface during greater than the warning limit that is provided with.
Advantage of the present invention is:
1, on-the-spot subsystem is fully integrated, finishes whole calibration control subsystem, data process subsystem, network communication subsystem function with a data processor.
2, because central processing unit adopts the single-chip microcomputer that all is made of semiconductor devices, with low cost, the technical value added height, and the life-span is long, harm such as no computer virus;
3, by built-in communication interface, both can satisfy the requirement of telecommunication, can satisfy the requirement of fieldbus networking again.
4, owing to be the universal measurement Interface design, and can carry out linear operation processing and measurement unit to the signal of input by central processing unit converts, therefore, can carry out interface with any instrument with standard analog signal output, satisfy data-interface requirement with any concentration detector table, make system in combination flexible, changeable.
5, can carry out dynamic standard and when the measurement data of the respective channel external alarm of connection during greater than the warning limit that is provided with to the measurement of concetration instrument.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is a main program flow chart of the present invention;
Fig. 3 is a counter interruption subroutine process flow diagram in the master routine of the present invention;
Fig. 4 is a clock circuit interruption subroutine second process flow diagram in the master routine of the present invention;
Fig. 5 is a communicating interrupt subroutine flow chart in the master routine of the present invention.
Below in conjunction with embodiment the present invention is elaborated:
Embodiment
5 as central processing unit (can adopt PHILIPS89C58CUUU), other each unit is as follows: 12 A/D metering circuits 1, (0～20mA) current signal converts 0.4～2V (0～2V) voltage signal to 4～20mA that this circuit will be measured by 8 road V/I converters, this signal is transferred to (TLC2543) A/D converter by filtering circuit, A/D converter relatively obtains corresponding with it digital signal with input signal and reference voltage, and arrives CPU by SPI (serial port interface) bus transfer.Photoelectric isolating relay interface circuit 2, comprise dynamic calibration relay output interface and alarm relay output interface, said dynamic calibration relay output interface was finished the zero point of measurement of concetration instrument, the calibration of scale by the time interval, the start-up time that are provided with, and the alarm relay output interface is when the measurement data of the respective channel external alarm of connection during greater than the warning limit that is provided with.Printer interface circuit 3, its output print form are pressed the design of TP-μ P computer printing machine, can regularly or manually print measurement result.Communication interface circuit 4, this interface comprises that photoisolator, RS232 drive (MAX232), RS485 drives circuit such as (SN75LBC184), insulating power supply and forms, owing to adopted the isolation drive technology, make the stability and the reliability of communication interface be greatly improved, wherein the RS232 interface is used for external modems 15 (MODEM) realization telephone wire networking carrying out telecommunication, and the RS485 interface is realized local communication (LAN (Local Area Network)) by the twisted-pair feeder networking.Display circuit 9 is used for the parameter and the alarm condition of display instrument system time, measurement result and setting, dynamic calibration state.Button treatment circuit 10 is used to the time of checking, measurement result, calibration result, manually boots calibration, manually prints, is provided with parameter etc.Watchdog reset circuit 6 is used to finish the electrification reset of complete machine and resets again automatically when system's system in case of system halt that is interfered.Clock circuit 8, this chip are real time clock circuit, and built-in lithium battery when clock is walked continuously behind the system cut-off, provides the time tag of second timing interruption and data storage.Storer (RAM) circuit 7 is used for storage parameter and storage of measurement data is set.Above-mentioned each unit links to each other with single-chip microcomputer 5 respective end, 5 pairs of signals by 1 input of A/D metering circuit of said single-chip microcomputer carry out calculation process, comprise the range processing, measurement unit conversion etc. are so that display circuit 9 result displayed are corresponding with the result of measurement of concetration instrument measurement; By clock circuit 8 data are handled by the time interval value of the averaging calculating that is provided with, maximal value, minimum value simultaneously, surpass alarm setting value data recording and time keeping thereof, finish the zero point of measurement of concetration instrument, the calibration of scale by the time interval, the start-up time that are provided with by dynamic calibration relay output interface, record calibration result and alignment time, and the data of handling are put into memory circuitry 7 storages, connect printer prints by printer interface 3, carry out data remote by communication interface 4; When the measurement data of respective channel is connected external alarm by the alarm relay output interface during greater than the warning limit that is provided with.Single-chip microcomputer 5 built-in system initialize routines and master routine (see figure 2), A/D measure subroutine, relay output subroutine, the printout subroutine, the spi bus control subprogram, I2C bus control subprogram, the watchdog reset control subprogram, data processing, counting subroutine, data storage subroutine, display subroutine, button is handled subroutine, Communication Control subroutine.System's repertoire is finished by interruption subroutine, and (1) shows that output, key scan and processing, communication state detect, and finishes (see figure 3) by the counter interruption subroutine, carries out 1 time every 50ms.(2) interface measurement, data computation processing, controlling alarm, dynamic calibration control are finished (see figure 4) by clock circuit interruption subroutine second, carry out 1 time every 1S.(3) communication command reception, data send finishes (Fig. 5) by the communicating interrupt subroutine, and this interrupt priority level is the highest, and response is at any time interrupted.
When actual installation, the output terminal of online pollutant levels measuring instrument or sensor 14 (water quality and gas) is linked to each other with measurement interface 1, at relay interface 2 devices 13 taking alarm, connect TP-μ P printer 12 at printer interface 3, connect the PC 11 of built-in running environment smp data processing system software package at communication interface 4.
Claims (1)
1, a kind of data processing system for in-line monitor of environment, comprise and be used for the display instrument system time, the parameter of measurement result and setting, the display circuit of alarm condition and dynamic calibration state, be used for finishing the electrification reset of complete machine and work as system and be interfered, automatically the watchdog reset circuit that resets again during system in case of system halt, when being used for that clock is walked continuously behind system cut-off, the clock circuit of the time of second timing interruption and data storage is provided, be used to store the storer that parameter and storage of measurement data are set, be used to the time of checking, measurement result, calibration result, manually boot calibration, manually print, the button treatment circuit of parameter is set, be used for regularly or manually print the printer interface circuit of measurement result, it is characterized in that this data processing system for in-line monitor of environment is used for the transient measurement result of measurement of concetration instrument is carried out the A/D metering circuit of mould/number conversion in addition; The photoelectric isolating relay interface circuit that constitutes by dynamic calibration relay output interface that is used for repeatedly kicking into action attitude calibration with the concentration measuring apparatus epiphase and the alarm relay output interface that links to each other with external alarm; Be used for carrying out the communication interface that telecommunication and twisted-pair feeder networking realize local communication by telephone wire networking, it also has a single-chip microcomputer that links to each other with the foregoing circuit unit, said single-chip microcomputer is used for the signal by the input of A/D metering circuit is carried out linear operation processing, measurement unit conversion, so that the display circuit result displayed is corresponding with the result of concentration detector table measurement; Simultaneously data are handled by the time interval value of averaging calculating, maximal value, the minimum value of the setting of clock circuit, surpass alarm setting value data recording and time keeping thereof, finish the zero point of measurement of concetration instrument, the calibration of scale by the time interval, the start-up time that are provided with by dynamic calibration relay output interface, record calibration result and the alignment time, and with the data of handling be put into the memory circuitry storage, by printer prints, carry out data remote by communication interface; When the measurement data of respective channel is connected external alarm by the alarm relay output interface during greater than the warning limit that is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011062452A CN1210569C (en) | 2001-02-28 | 2001-02-28 | Data processing system for in-line monitor of environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011062452A CN1210569C (en) | 2001-02-28 | 2001-02-28 | Data processing system for in-line monitor of environment |
Publications (2)
| Publication Number | Publication Date |
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| CN1306214A CN1306214A (en) | 2001-08-01 |
| CN1210569C true CN1210569C (en) | 2005-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011062452A Expired - Fee Related CN1210569C (en) | 2001-02-28 | 2001-02-28 | Data processing system for in-line monitor of environment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102419584B (en) * | 2011-11-30 | 2013-04-10 | 锦州华冠环境科技实业公司 | Method of estimating and evaluating emission law of pollution source by using internet of things and internet-of-things controller |
| CN102830210B (en) * | 2012-09-04 | 2015-12-16 | 常州市计量测试技术研究所 | Full-automatic online configurable monitoring water environment instrument calibrating installation |
| CN103808910A (en) * | 2013-12-06 | 2014-05-21 | 西安天厚电子技术有限责任公司 | Portable methanol gasoline detector |
| CN105044512A (en) * | 2015-07-23 | 2015-11-11 | 平高集团有限公司 | Substation ground potential automatic detection system |
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