Environmental monitoring data acquisition controlling instrument
Technical field
The utility model relates to---plant the environmental monitoring instrument.
Background technology
It is State Environmental Protection Administration's system---establishment that National Environmental is managed infosystem, be used for the computer software of the environmental protection facility operational monitoring and total amount of pollutant monitoring, present---individual typical pollution source on-line continuous monitoring means is made up of " open-channel meter ", " environment monitoring black box ", " environmental supervision communications adapter " and " pollutant levels measurement instrument ".Wherein, open-channel meter is used for measuring natural river discharge---and plant instrument, form, in the environmental monitoring field, be used to measure quantity of wastewater effluent by metering weir (or measuring tank), liquid level sensor, data processing and display part instrument; The environment monitoring black box is made up of testing circuit, data processing and display circuit, RS232 interface circuit etc., be the operation conditions that is used to monitor the environment protection treating facility, measure and write down opening/quarter in stopping time and working time totally every day of environment protection treating facility (or equipment); The environmental supervision communications adapter is made up of RS232 acquisition interface circuit, data processing circuit, mass data storage circuit and MODEM communicating circuit, it is the product that is used for realizing combined network communication with " National Environmental management infosystem ", it is connected with " environment monitoring black box ", " open-channel meter " by the RS232 interface, monitoring result and flow measurement results acquisition and storage with the environmental protection facility operation, and at any time the response " National Environmental management infosystem " communication request, with the storage data transmission in long-range computing machine.
The connection array mode of existing " open-channel meter ", " environment monitoring black box ", " environmental supervision communications adapter " these three kinds of instrument is: open-channel meter is by the liquid level sensor measuring liquid level of its connection, calculate data on flows through data processing circuit, this data on flows is delivered to display circuit and is exported with analog quantity simultaneously; The environment monitoring black box connects open-channel meter simulation output interface circuit by testing circuit and gathers data on flows, also monitor the running status of environmental protection facility simultaneously, data on flows and facility operation state are delivered to display circuit, and deliver to the environmental supervision communications adapter by the RS232 interface simultaneously; The environmental supervision communications adapter is gathered black box data by RS232 acquisition interface circuit, and data storage is got up, and manages infosystem by MODEM communicating circuit and National Environmental simultaneously and carries out telecommunication.
The connection array mode of existing three kinds of instrument has following shortcoming:
1. systematic error is big.Because analog interface is mainly adopted in the connection between the different instrument,, cause the error of total system to increase so produced the data error that instrument connects.
2. the reliability of system is low.There is superposed part in the each several part circuit of three kinds of instrument, and the reliability that causes system that increases of circuit reduces.
The utility model content
The purpose of this utility model provides---and plant environmental monitoring data acquisition controlling instrument, it has solved the technical matters that systematic error is big in the background technology, reliability is low.
Technical solution of the present utility model is:---plant environmental monitoring data acquisition controlling instrument, comprising: sensor 1 is used for responsive related physical quantity; Testing circuit 2, be used for the data that pick-up transducers 1 transmits and it changed the back transmit, be used for the multichannel data that receiving test circuit 2 transmits and handle, carry out message exchange, carry out exchanges data, transmit data to remote data communication circuit 6 with data storage circuitry 5 with demonstration and key circuit 4 to central processing circuit 3; Show and key circuit 4, be used to show relevant information that central processing circuit 3 transmits and to central processing circuit 3 communicating control informations; Data storage circuitry 5 is used to store the related data that central processing circuit 3 transmits; Remote data communication circuit 6 is used to receive data that central processing circuit 3 transmits and transmits to environmental supervision information center by PSTN public telephone network 7.
The sensor 1 can comprise liquid level sensor 12, is used for the liquid level on responsive blowdown metering weir, perhaps can comprise flow sensor 13, is used for the flow velocity of responsive blow-off line sewage or waste gas.
The sensor 1 comprises at least---individual electrical quantity sensor 11 is used for the on off state that sensitivity is attached thereto waste removal equipment.Above-mentioned environmental monitoring data acquisition controlling instrument also comprises power circuit 9, is used for providing power supply to liquid level sensor 12 or flow sensor 13.
Above-mentioned remote data communication circuit 6 comprises: the RS232 interface circuit 61 that links to each other with the output terminal of central processing circuit 3; The MODEM communicating circuit 62 that links to each other with PSTN public telephone network 7.
Above-mentioned data storage circuitry 5 can be NVRAM or FlashRAM circuit.
Above-mentioned demonstration and key circuit 4 can be touch-screens.
The utlity model has following advantage:
1. the product error is little.Owing on the basis of environment monitoring black box, increased a spot of circuit, just can finish the function that just can finish with all circuit common combinations of first three instrument, the minimizing of overall circuit makes the also corresponding minimizing of the error that data transmission produced between the circuit, and the global error of product reduces thereupon.
Product integrated level height, cost is low, reliability is high.The utility model is not mechanically will be assembled in first three instrument---in the individual cabinet but the design of the function of three instrument is existed---rises, by of the present utility model---the platform instrument realizes flow measurement, environmental protection facility monitoring, data storage and remote data communication, promptly only use---three instrument before the platform instrument just can replace, so have very high reliability and cost performance.
Description of drawings
Fig. 1 is the environmental monitoring data acquisition controlling instrument theory diagram that can detect sewage discharge;
Fig. 2 is the environmental monitoring data acquisition controlling instrument theory diagram that can detect the pipeline pollutant emission; Wherein:
1---sensor; 2---testing circuit; 3---central processing circuit; 4---show and key circuit; 5---data storage circuitry; 6---the remote data communication circuit; 7---the PSTN public telephone network; 8---environmental supervision information center; 9---power circuit; 11---electrical quantity sensor; 12 liquid level sensors one by one; 13---flow sensor; 61---the RS232 interface circuit; 62---the MODEM communicating circuit.
Embodiment
Referring to accompanying drawing 1, the structure and the annexation that can detect the environmental monitoring data acquisition controlling instrument of sewage discharge are; Liquid level sensor 12 is arranged in corresponding metering weir or the measuring tank, connect its power circuit 9,1? 8 electrical quantity sensor H link to each other with the gauge tap of corresponding waste removal equipment respectively, the output terminal of electrical quantity sensor 11 and liquid level sensor 12 links to each other with the input end of testing circuit 2 respectively, the output terminal of testing circuit 2 links to each other with the input end of central processing circuit 3, central processing circuit 3 respectively with demonstration and key circuit 4, data storage circuitry 5 links to each other with remote data communication circuit 6, remote data communication circuit 6 comprises RS232 interface circuit 61 and MODEM communicating circuit 62, wherein the output terminal of central processing circuit 3 links to each other with the input end of RS232 interface circuit 61, and the output terminal of RS232 interface circuit 61 is managed infosystem through MODEM communicating circuit 62 backs by PSTN public telephone network 7 and National Environmental and linked to each other.Environmental monitoring data acquisition controlling instrument also can comprise the power circuit 12 that the DC24v direct supply is provided to liquid level sensor 12, and data storage circuitry 5 adopts the FlashRAM circuit.
Referring to accompanying drawing 2, the sensor 13 of measurement flow rate is arranged on the corresponding blow-off line, connect its power circuit 9,1---8 electrical quantity sensors 11 link to each other with the gauge tap of corresponding waste removal equipment respectively, the output terminal of electrical quantity sensor 11 and flow sensor 13 links to each other with the input end of testing circuit 2 respectively, and is identical in remaining circuit part and the accompanying drawing 1.The course of work of the present utility model:
The instrument energized, connect each sensor by central processing circuit 3 controls, the on off state of electrical quantity sensor 11 responsive waste removal equipments wherein, the flow velocity of sewage or waste gas in the liquid level on liquid level sensor 12 responsive blowdown metering weirs or the flow sensor 13 responsive blow-off lines, more than each sensor with sensitivity to raw data send in the testing circuit 2, testing circuit 2 carries out data acquisition and changes and send into central processing circuit 3 then, data after central processing circuit 3 will be handled show on touch-screen, simultaneously, the staff can and send control information to central processing circuit 3 by touch-screen, change content displayed or new operational factor is set, data after central processing circuit 3 will be handled are that waste removal equipment working time and pollutant discharge amount are sent into data storage circuitry 5 and stored, when needs when environmental supervision information center 8 transmits data, central processing circuit 3 is reading corresponding data from data storage circuitry 5, by remote data communication circuit 6, be specifically by RS232 interface 61 and and MODEM communicating circuit 62, manage information center's 8 teletransmission Monitoring Data through PSTN public telephone network 7 to National Environmental again.