CN201732089U - Sewage disposal monitoring device based on the technology of wireless sensing network - Google Patents

Abstract

The utility model relates to a sewage disposal monitoring device based on the wireless sensing network technology. The sewage disposal in prior art adopts wired monitoring mode and has higher cost. The sewage disposal monitoring device comprises a plurality of sensor terminal nodes, a plurality of routing nodes and a central node, wherein the sensor terminal nodes are distributed in each sewage disposal pond of in a sewage disposal plant corresponding to the sewage disposal process; the routing nodes are distributed among the sensor terminal nodes; the sensor terminal nodes are communicated with the routing nodes by signals; the routing nodes are communicated with the central node by signals; and an embedded tablet computer is connected with the central node through a programmable controller. The utility model overcomes the wiring troubles, can change the network scale and layout as needed, and also facilitates later maintenance. The sewage disposal monitoring device is beneficial to improving sewage disposal efficiency and effect. At the same time, the sewage disposal can be controlled in centralized mode by the programmable controller according to on-site conditions, and the embedded tablet computer can be used for changing decision strategies and optimizing control.

Description

Wastewater treatment supervising device based on the radio sensing network technology

Technical field

The utility model belongs to the wireless sensor technology field, relates to a kind of wastewater treatment supervising device and existing P LC technology based on the radio sensing network technology and combines, and is used for the monitoring and the control of wastewater treatment.

Background technology

China's freshwater resources total amount occupies the 6th in the world, but the occupancy volume per person only is world occupancy volume per person's 1/4.Freshwater resources lack very much, and along with the continuation of the further developing of China's economy, the size of population increases, shortage of fresh water increases the weight of.Therefore, sewage handles and uses the necessary means that becomes sustainable development.

" municipal sewage treatment and pollution prevention technique policy " regulation, the sewage average treatment rate in national cities and towns in 2010 is not less than 50%, the wastewater treatment rate of key cities is not less than 70%, reach this target, is used for the water prevention and cure of pollution investment every year and must reaches more than 40,000,000,000 yuan.Reach this target, China must newly-increased sewage treatment plant nearly 1000 surplus seat, gross investment is up to 2000 to 3,000 hundred million yuan.In addition, corresponding supervising the network construction investment is also very huge.This shows that there is bigger financing gap in the wastewater treatment cause of China, the situation is tense for environment.Therefore, sewage disposal system changes to the middle and small scale distributing from extensive centralized, and the layout that forms " based on large-scale, middle-size and small-size complementation " tallies with the national condition and development situation.

Sewage disposal process is a complex biological process: the course of reaction complexity, many difficult parameters of system performance that influence are with control, most information non-digitalizations and quantification, system height mobilism.Because its mechanism has complexity, characteristics such as highly non-linear, is to guarantee the good operation of sewage disposal process and improve effluent quality, the well-designed of control strategy just shows particularly important.And the basis of control is exactly monitoring and prediction to current state, and the important parameter in the sewage disposal process is measured and just seemed extremely important so.

According to interrelated data with to the investigation of some areas sewage treatment plant, China has built up the sewage treatment plant of the operation of putting into production at present, automatically the control monitoring technology roughly has three kinds of situations: a kind of situation is to set up central control room, the Central Control Room Dual-Computer Hot-Standby System connects each PLC control sub-station in the factory by communication media (as twisted-pair feeder, optical fiber etc.), each PLC control sub-station is controlled on-the-spot instrument and meter topworks, thereby reaches the purpose of Monitoring and Controlling; Second kind of situation is directly to control each on-the-spot instrument and meter by each PLC substation in each sewage treatment plant; The third situation is because the time of founding the factory than morning or input deficiency, does not have automatic control system in the factory.Which kind of situation no matter, because the equipment and the technology that adopt are uneven, be subjected to influence in various degree for production run, the management of sewage treatment plant, influence effluent quality, await adopting new automatic control technology that sewage treatment plant's automatic control system is transformed, reconstructed even rebuilds, to satisfy the needs of sewage treatment plant's production run; Next be convenient to state functionaries to major polluting sources-sewage treatment plant whether ordinary production, whether effective monitoring is carried out in stably reaching standard production; The simultaneously national macroeconomy policy of building clearly proposes, to extensively promote the application of science and technology in all trades and professions, with computer information technology, the contour science and technology of the communication technology, lifting is rebuild traditional industry, and develops towards Automation of Manufacturing Process, IT application in management, high-quality, high-level efficiency, energy-conservation direction.

Generally speaking, plant effuent is handled because layout is disperseed, and the monitoring system costliness often is in no monitor state, makes wastewater treatment efficiency undesirable at present, and every index can not reach requirement.Even used expensive monitoring system, traditional wired monitoring needs professional's installation of connecting up, and change is trouble very.In addition, the remote monitoring inconvenience of relevant department needs to site inspection supervision, difficult management.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and a kind of wastewater treatment supervising device based on the radio sensing network technology is provided, and in conjunction with existing P LC and panel computer, provides convenient mode that wastewater treatment is detected and manages.

The utility model comprises a plurality of sensor terminal nodes, a plurality of routing node and a Centroid.A plurality of sensor terminal nodes are distributed in each treatment tank of sewage disposal process in the sewage treatment plant, a plurality of routing nodes are distributed between a plurality of sensor terminal nodes, the sensor terminal node is connected with the routing node signal, routing node is connected with the Centroid signal, and the embedded flat computer expert crosses Programmable Logic Controller and is connected with Centroid.

The sensor terminal node comprises online measuring instrument, signals collecting M16 single-chip microcomputer and radio receiving transmitting module.The on-line detector table is connected with the input end of signal conditioning circuit, the output terminal of signal conditioning circuit is connected with signals collecting M16 single-chip microcomputer by analog to digital conversion circuit, signals collecting M16 single-chip microcomputer is connected by serial ports with radio receiving transmitting module, is connected with terminal antenna on the radio receiving transmitting module.

Routing node comprises signal relay M16 single-chip microcomputer and the routing to communicate module that serial ports connects, and is connected with the relaying antenna on the routing to communicate module.

Key-press module and display module that Centroid comprises the wireless communication module that is connected by serial ports with the STM32 single-chip microcomputer, is connected by the IO mouth with the STM32 single-chip microcomputer, the STM32 single-chip microcomputer is connected with the RS485 bus interface, is connected with the Centroid antenna on the wireless communication module.

Whether the utility model can provide parameters such as real-time treatment state, result for wastewater treatment management, reasonable for grasping the wastewater treatment flow process, and whether result the qualified convenience that provides.

The application of wireless senser makes network installation more convenient, has saved the trouble of wiring.In use the actual effect of node, fault only need be changed corresponding module and get final product.If sewage disposal system need increase or reduce some treatment facilities,, can arbitrarily increase and decrease the sensor terminal node owing to adopt the mode of wireless network.So, also very convenient in later maintenance.The centralized management of Surveillance center can macroscopic view be understood the entire sewage processing procedure, and the processing details of each link, thereby adjusts wastewater treatment strategies such as current treatment step, time, helps improving the efficient and the effect of wastewater treatment.

PLC (Programmable Logic Controller) is a lot of in commercial Application, and stability is relatively good, is applicable to the control of wastewater treatment.The convenience of wireless monitor and PLC stability combination in the control field, can the better optimize sewage disposal system.For the user, do not need to reach on-the-spot, just can understand and control with the embedded flat computer the entire sewage treatment scheme.In addition, panel computer links to each other with the PROFIBUS bus with PLC, and expansion is convenient.

The utility model can obtain the treatment scheme parameter, and result, and can long record can improve wastewater treatment efficiency to setting up better wastewater treatment model, and strengthens the government supervision dynamics and be very helpful.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of sensor terminal node among Fig. 1;

Fig. 3 is the structural representation of routing node among Fig. 1;

Fig. 4 is the structural representation of Centroid among Fig. 1.

Embodiment

As shown in Figure 1, a kind of wastewater treatment supervising device based on the radio sensing network technology comprises a plurality of sensor terminal nodes 1, a plurality of routing node 2 and a Centroid 3.A plurality of sensor terminal nodes 1 are distributed in each treatment tank of sewage disposal process in the sewage treatment plant, a plurality of routing nodes 2 are distributed between a plurality of sensor terminal nodes 1, sensor terminal node 1 is connected with routing node 2 signals, routing node 2 is connected with Centroid 3 signals, and embedded flat computer 5 is connected with Centroid 3 by Programmable Logic Controller 4.

As shown in Figure 2, sensor terminal node 1 comprises online measuring instrument 1-1, signals collecting M16 single-chip microcomputer 1-4 and radio receiving transmitting module 1-5.On-line detector table 1-1 is connected with the input end of signal conditioning circuit 1-2, the output terminal of signal conditioning circuit 1-3 is connected with signals collecting M16 single-chip microcomputer 1-4 by analog to digital conversion circuit 1-3, signals collecting M16 single-chip microcomputer 1-4 is connected by serial ports with radio receiving transmitting module 1-5, is connected with terminal antenna 1-6 on the radio receiving transmitting module 1-5.

As shown in Figure 3, routing node 2 comprises signal relay M16 single-chip microcomputer 2-1 and the routing to communicate module 2-2 that serial ports connects, and is connected with relaying antenna 2-3 on the routing to communicate module 2-.

As shown in Figure 4, key-press module 3-5 and display module 3-4 that Centroid 3 comprises the wireless communication module 3-2 that is connected by serial ports with STM32 single-chip microcomputer 3-1, is connected by the IO mouth with STM32 single-chip microcomputer 3-1, STM32 single-chip microcomputer 3-1 is connected with RS485 bus interface 3-3, is connected with Centroid antenna 3-6 on the wireless communication module 3-2.

In the work, the sensor terminal node with the field monitoring data collected directly or adopt the multi-hop mode indirect, is pooled to Centroid via routing node as required.Each sensor terminal node all has separately fixedly ID number, and the data of uploading comprise ID number, with the source of recognition data, can number carry out classification analysis to the gained data by identification id in monitoring center.The sensor terminal node has on-line detector table required in the wastewater treatment flow process, and routing node only is responsible for forwarding of data.The network that these two kinds of nodes constitute allows node freely to add and to withdraw from, and realizes the self-organization of whole wireless monitor network and recovery certainly, can be fit to the demand of the sewage treatment plant of different scales, distribution.

Centroid is collected the data of entire field, is delivered to PLC by the RS485 bus again.PLC receives and to collect field data by wireless sensor network, and on-the-spot topworks duties such as the on-the-spot pump that is connected with PLC, valve, blower fan, controls on-the-spot topworks according to existing decision policy and works.Simultaneously, PLC is with the data of receiving, the industrial panel computer that is linked to each other by the PROFIBUS bus is informed in the decision-making of being done, the user can observe on-the-spot on-line detector table and detect data, on-the-spot topworks work duty on industrial panel computer, also can revise the decision policy of PLC, so that sewage treatment plant's treatment scheme is controlled.

Claims (1)

1. based on the wastewater treatment supervising device of radio sensing network technology, comprise a plurality of sensor terminal nodes, a plurality of routing node and a Centroid, a plurality of sensor terminal nodes are distributed in each treatment tank of sewage disposal process in the sewage treatment plant, a plurality of routing nodes are distributed between a plurality of sensor terminal nodes, the sensor terminal node is connected with the routing node signal, routing node is connected with the Centroid signal, the embedded flat computer expert crosses Programmable Logic Controller and is connected with Centroid, it is characterized in that:

The sensor terminal node comprises online measuring instrument, signals collecting M16 single-chip microcomputer and radio receiving transmitting module; The on-line detector table is connected with the input end of signal conditioning circuit, the output terminal of signal conditioning circuit is connected with signals collecting M16 single-chip microcomputer by analog to digital conversion circuit, signals collecting M16 single-chip microcomputer is connected by serial ports with radio receiving transmitting module, is connected with terminal antenna on the radio receiving transmitting module;

Routing node comprises signal relay M16 single-chip microcomputer and the routing to communicate module that serial ports connects, and is connected with the relaying antenna on the routing to communicate module;

Key-press module and display module that Centroid comprises the wireless communication module that is connected by serial ports with the STM32 single-chip microcomputer, is connected by the IO mouth with the STM32 single-chip microcomputer, the STM32 single-chip microcomputer is connected with the RS485 bus interface, is connected with the Centroid antenna on the wireless communication module.

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