CN103675222A - On-line agricultural non-point source pollution monitoring and automatic sampling system - Google Patents
On-line agricultural non-point source pollution monitoring and automatic sampling system Download PDFInfo
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Abstract
The invention provides an on-line agricultural non-point source pollution monitoring and automatic sampling system and belongs to the field of environmental scientific and farmland ecological research equipment. The system comprises an automatic rainfall amount monitoring subsystem for monitoring rainfall amount and a rainfall process, an automatic flow monitoring subsystem for monitoring agricultural non-point source pollution runoff gathered into a trapezoid weir, an on-line sampling subsystem for obtaining a water sample of the agricultural non-point source pollution runoff from the trapezoid weir, an on-line non-point source pollution index monitoring subsystem for monitoring a preset non-point source pollution index of the agricultural non-point source pollution runoff in the trapezoid weir, a system control and data processing subsystem for acquiring data from the connected subsystem and processing and storing the acquired data, and a solar power supply subsystem which is connected with the system control and data processing subsystem and is used for supplying power to all the subsystems. According to the technical scheme disclosed by the invention, the agricultural non-point source pollution charge and a production process thereof can be automatically sampled and monitored.
Description
Technical field
The present invention relates to environmental science and agricultural ecological and learn research equipment field, refer to especially a kind of widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and automatic sampling system.
Background technology
In current research work, pollution monitoring work can be divided into artificial fixed point monitoring and monitoring automatically.Fixed point monitoring is time-consuming, effort, for the pollution monitoring of specific condition (as precipitation) or special area, seems and comparatively lags behind, unable to do what one wishes.Therefore, monitoring becomes the leading of pollution monitoring day by day automatically, and artificial fixed point monitoring is as supplementary means, and this is the general trend of current pollution monitoring work.
In automatic pollution monitoring work, take again point-source pollution monitoring as main.Because its pollution source are fixed, disposal of pollutants is concentrated, therefore monitoring is comparatively easy.The automatic monitoring system of point-source pollution is widely used in the monitoring of various places contaminating enterprises by environmental administration, and reach automatic monitoring and early-warning and predicting integrated, when pollutant discharge of enterprise exceeds standard, system will alert notice related personnel.With respect to point-source pollution, the aspect such as pollution of area source has larger uncertainty, and the time that is mainly reflected in is uncertain, place is uncertain, pollutant is uncertain, scope is uncertain, pollutional load is uncertain.Therefore compared to point source monitoring, there is certain difficulty in its monitoring, also seldom have at present the automatic monitoring system of pollution of area source, or its monitoring means is also immature.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and automatic sampling system, can carry out automatic sampling and monitoring to widespread pollution from the overuse of fertilizers and pesticides in rural area load and production process thereof.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, provide a kind of widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and automatic sampling system, comprising:
For monitoring the rainfall automatic monitoring subsystem of rainfall and rainfall;
For monitoring the automatic monitoring subsystem of flow of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff that is pooled to Cipolletti weir;
For obtain the online sampling subsystem of the water sample of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff from described Cipolletti weir;
For monitoring the pollution of area source index on-line monitoring subsystem of default pollution of area source index of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of described Cipolletti weir;
The system control and the data process subsystem that are connected respectively with described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow, described online sampling subsystem and described pollution of area source index on-line monitoring subsystem, for the subsystem from connected, obtain data and the data that get are processed;
Control with described system the solar powered subsystem that is connected, is used to above-mentioned subsystems power supply with data process subsystem.
Further, described solar powered subsystem comprises:
For sun power being converted to electric energy and storing, be directly that described system is controlled and data process subsystem power supply, and be the solar panel of described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow, described online sampling subsystem and the power supply of described pollution of area source index on-line monitoring subsystem by described system control and data process subsystem.
Further, described rainfall automatic monitoring subsystem comprises:
Be used for monitoring rainfall and rainfall, store rainfall data and the automatic rainfall meter to described system control and data process subsystem by rainfall data transmission.
Further, the minimum of described automatic rainfall meter monitoring rainfall is 0.5mm.
Further, the automatic monitoring subsystem of described flow comprises:
For collecting the Cipolletti weir of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff;
Be fixed on the sidewall of described Cipolletti weir, for responding to and monitor the flow of described Cipolletti weir widespread pollution from the overuse of fertilizers and pesticides in rural area runoff, and by data on flows be transferred to described system control with data process subsystem at linear flow rate automatic monitoring probing head.
Further, it is described when linear flow rate automatic monitoring probing head is not less than 0.01m/s specifically for the flow velocity at widespread pollution from the overuse of fertilizers and pesticides in rural area runoff, transmission flow velocity signal controls and data process subsystem to described system, as the instruction of opening described online sampling subsystem and pollution of area source index on-line monitoring subsystem.
Further, described Cipolletti weir is compound Cipolletti weir, and the lower trapezoid of described Cipolletti weir is 60 ° of isosceles trapezoids, and the upper trapezoid of described Cipolletti weir is 45 ° of isosceles trapezoids;
The porch of described Cipolletti weir is provided with for stopping the grid of suspension;
The lower trapezoid side of described Cipolletti weir comprise an inclination angle be 10 °, for placing the groove of probe, 0.1m at the bottom of Cipolletti weir weir described in horizon distance under the notch of described groove, the notch of described groove is coated with entanglement.
Further, described online sampling subsystem comprises:
Be placed in the groove of described Cipolletti weir, for gathering the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of described Cipolletti weir and removing the sampling probe of suspension wherein;
Be connected with described sampling probe, for control the unlatching of controlling water pump with the instruction of data process subsystem according to described system, according to default sampling time interval, take the sampler of water sample.
Further, described pollution of area source index on-line monitoring subsystem comprises:
Be placed in the groove of described Cipolletti weir, for measure the default pollution of area source index of described Cipolletti weir widespread pollution from the overuse of fertilizers and pesticides in rural area runoff in duration of raining, record and store achievement data, achievement data is transferred to described system control and pops one's head in the pollution of area source index on-line monitoring of data process subsystem.
Further, described system is controlled with data process subsystem and is comprised:
Be used for the GPRS transmitter that receives data and send the data to staff;
Be connected with described GPRS transmitter, for distribute described solar powered subsystem transmission electric weight, from connected subsystem, obtain with storage data the system that transfers data to described GPRS transmitter and control and data processing chip.
Further, described system is controlled with data processing chip specifically for the electric weight of described solar powered subsystem transmission is distributed to described GPRS transmitter, described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow, described online sampling subsystem and described pollution of area source index on-line monitoring subsystem;
Described system is controlled with data processing chip also for after receiving the rainfall signal of described rainfall automatic monitoring subsystem, open the automatic monitoring subsystem of described flow, and after receiving the flow velocity signal of the automatic monitoring subsystem of described flow, open described pollution of area source index on-line monitoring subsystem, and set the sampling time interval of described online sampling subsystem, control described online sampling subsystem and carry out the sampling of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff;
Described system is controlled with data processing chip also for receiving and store the data from described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow and described pollution of area source index on-line monitoring subsystem, and gives described GPRS transmitter by the data transmission of collecting.
Embodiments of the invention have following beneficial effect:
In such scheme, widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and automatic sampling system are by for monitoring the rainfall automatic monitoring subsystem of rainfall and rainfall, for monitoring the automatic monitoring subsystem of flow of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff pollution of area source runoff that is pooled to Cipolletti weir, for obtain the online sampling subsystem of the water sample of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff from described Cipolletti weir, for monitoring the pollution of area source index on-line monitoring subsystem of default pollution of area source index of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of described Cipolletti weir, for the system of obtaining data from connected subsystem and the data that get are processed, control and data process subsystem, be used to the solar powered subsystem of above-mentioned subsystems power supply to form.By widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring of the present invention and automatic sampling system, can carry out automatic sampling and monitoring to widespread pollution from the overuse of fertilizers and pesticides in rural area load and production process thereof, and form the subsystems of this system can realizing self disassembling, be convenient for carrying with field and install.
Accompanying drawing explanation
Fig. 1 is the widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring of the embodiment of the present invention and the structural representation of automatic sampling system;
Fig. 2 is the widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring of the embodiment of the present invention and the automatic monitoring subsystem of flow of automatic sampling system, pollution of area source index on-line monitoring subsystem and the probe scheme of installation that samples online subsystem;
Fig. 3 is the mutual schematic diagram of the widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring of the embodiment of the present invention and each subsystem of automatic sampling system.
Embodiment
For technical matters, technical scheme and advantage that embodiments of the invention will be solved are clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention, for failing the problem of monitoring pollution of area source effectively automatically in prior art, provide a kind of widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and automatic sampling system, can carry out automatic sampling and monitoring to widespread pollution from the overuse of fertilizers and pesticides in rural area load and production process thereof.
Fig. 1 is the widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring of the embodiment of the present invention and the structural representation of automatic sampling system, and as shown in Figure 1, the present embodiment comprises:
For monitoring the rainfall automatic monitoring subsystem 20 of rainfall and rainfall;
For monitoring the automatic monitoring subsystem 40 of flow of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff that is pooled to Cipolletti weir;
For obtain the online sampling subsystem 50 of the water sample of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff from Cipolletti weir;
For monitoring the pollution of area source index on-line monitoring subsystem 60 of default pollution of area source index of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of Cipolletti weir;
With rainfall automatic monitoring subsystem 20, the automatic monitoring subsystem 40 of flow, sample subsystem 50 online and be connected respectively with pollution of area source index on-line monitoring subsystem 60, for the subsystem from connected, obtain data and system that the data that get are processed is controlled and data process subsystem 30;
Control with system the solar powered subsystem 10 that is connected, is used to above-mentioned subsystems power supply with data process subsystem 30.
Wherein, solar powered subsystem 10 comprises solar panel, sun power can be converted to electric energy and store, directly for system is controlled and data process subsystem 30 power supplies, and control with data process subsystem 30 and be rainfall automatic monitoring subsystem 20, the automatic monitoring subsystem 40 of flow, sample subsystem 50 and 60 power supplies of pollution of area source index on-line monitoring subsystem online by system, serve as the power supply of whole system.
The critical piece of rainfall automatic monitoring subsystem 20 is automatic rainfall meters, can monitor and record rainfall and rainfall, and stores rainfall data, and rainfall data transmission is controlled and data process subsystem 30 to system.Wherein, the minimum of automatic rainfall meter monitoring rainfall can be 0.5mm, can guarantee like this precision of rainfall monitoring.
The automatic monitoring subsystem 40 of flow comprises: for collecting the Cipolletti weir 5 of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff; Be fixed on the sidewall of Cipolletti weir 5, for responding to and monitor the flow of Cipolletti weir 5 widespread pollution from the overuse of fertilizers and pesticides in rural area runoffs, and by data on flows be transferred to system control with data process subsystem 30 in linear flow rate automatic monitoring probing 6.
Wherein, as shown in Figure 2, Cipolletti weir 5 is compound Cipolletti weir, and lower trapezoid is 60 ° of isosceles trapezoids, can reach higher level within a short period of time, and upper trapezoid is 45 ° of isosceles trapezoids, and the height of lower trapezoid can be set to 1m.The Cipolletti weir 5 of the present embodiment is for collecting widespread pollution from the overuse of fertilizers and pesticides in rural area runoff, and its porch can arrange a grid, for stopping the suspension of large build.As shown in Figure 2, lower trapezoid side band one groove of Cipolletti weir 5, the inclination angle of this groove can be 10 °; so that sewage flows out in groove; 0.1m at the bottom of horizon distance weir under the notch of groove, groove mouth covers with entanglement, and groove can be for placing, protect instrument probe.The top of Cipolletti weir 5 can cover with entanglement, avoids large-sized object to fall into Cipolletti weir 5.Because technical scheme of the present invention is mainly used for monitoring widespread pollution from the overuse of fertilizers and pesticides in rural area, therefore design Cipolletti weir 5 for collecting sewage, can also, according to other factors such as laying of landform, landforms, monitoring target, sampling apparatus and monitoring device, set concrete monitoring section in actual applications.
As shown in Figure 2; in linear flow rate automatic monitoring probing 6, be fixed on the sidewall of Cipolletti weir 5 lower trapezoids; can protect in linear flow rate automatic monitoring probing 6 with an outer cover; its position is relative with groove notch, with pollution of area source index on-line monitoring probe 9 in groove and sampling probe 7 on same level line.In linear flow rate automatic monitoring probing 6 for responding to and monitor the flow of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of Cipolletti weir 5, when the flow velocity of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff reaches 0.01m/s, flow velocity signal is transferred to system to be controlled and data process subsystem 30, as opening one of instruction of online sampling subsystem 50 and pollution of area source index on-line monitoring subsystem 60, record afterwards, preserve data on flows, and data on flows is transferred to system control and data process subsystem 30.
In the present embodiment, when rainfall occurs, system is controlled with data process subsystem 30 and is received the rainfall signal from rainfall automatic monitoring subsystem 20, the automatic monitoring subsystem 40 of turn-on flow rate, while having collected certain water yield in Cipolletti weir 5, system is controlled with data process subsystem 30 and is received the flow velocity signal from the automatic monitoring subsystem 40 of flow, now, system is controlled with data process subsystem 30 and is sent work order to online sampling subsystem 50 and pollution of area source index on-line monitoring subsystem 60.
Wherein, sample online subsystem 50 and comprise sampling probe 7 and sampler 8.Sampling probe 7 is placed in the lateral grooves of Cipolletti weir 5, outside it, can wrap up one deck gauze, sampling probe 7 is for gathering the sewage of Cipolletti weir 5 and removing suspension wherein, sampling probe 7 with at linear flow rate automatic monitoring probing 6 and pollution of area source index on-line monitoring probe 9 on same level line; Sampler 8 is connected with sampling probe 7, receives from system and controls the instruction with data process subsystem 30, controls the unlatching of water pump, every default minute (or hour), gets full one bottle of water sample, the use of experimental determination to be fetched.
By online sampling subsystem 50, the present embodiment can collect the water sample of different periods in rainfall, within a certain period of time water sample is fetched to lab analysis, can obtain the change curve of pollution of area source index in rainfall.
Pollution of area source index on-line monitoring subsystem 60 comprises the pollution of area source index on-line monitoring probe 9 being placed in Cipolletti weir 5 lateral grooves, pollution of area source index on-line monitoring probe 9 and sampling probe 7 and in linear flow rate automatic monitoring probing 6 on same level line; Pollution of area source index on-line monitoring probe 9 is responsible for measuring the pollution of area source index of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff in the interior Cipolletti weir 5 of duration of raining, as COD, NH
3-N, pH, TN, TP etc., record and store achievement data, and achievement data is transferred to system control and data process subsystem 30.
By pollution of area source index on-line monitoring subsystem 60, the present embodiment can obtain the change curve of pollution of area source index in rainfall.
The core component of widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and automatic sampling system is that system is controlled and data process subsystem 30, and system is controlled with data process subsystem 30 and comprised that GPRS transmitter 1 and system for receiving data and sending the data to staff control and data processing chip.System control is connected with above-mentioned subsystems and GPRS transmitter 1 with data processing chip, it carries out data processing and storage, collect the data of subsystems, and transferring data to relevant staff by GPRS transmitter 1, the system that is illustrated in figure 3 is controlled and the mutual schematic diagram of data process subsystem 30 with other subsystems.
In the present embodiment, system is controlled with data processing chip and is mainly achieved as follows function: 1. system power: for the electric weight that solar powered subsystem 10 is transmitted, distribute to: GPRS transmitter 1, rainfall automatic monitoring subsystem 20, the automatic monitoring subsystem 40 of flow, sample subsystem 50 and pollution of area source index on-line monitoring subsystem 60 online; 2. system is controlled: receive from the rainfall signal of rainfall automatic monitoring subsystem 20 and the flow velocity signal of the automatic monitoring subsystem 40 of flow, control the sampling process of online sampling subsystem 50; 3. Data Collection and storage: receive and store the data from rainfall automatic monitoring subsystem 20, the automatic monitoring subsystem 40 of flow and pollution of area source index on-line monitoring subsystem 60; 4. data transmission: by the data transmission of collecting to GPRS transmitter 1.
Widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring of the present invention and automatic sampling system are realized full automatic widespread pollution from the overuse of fertilizers and pesticides in rural area monitoring under the condition of no supervision in the wild, this system is for a kind of principal mode of pollution of area source, it is the widespread pollution from the overuse of fertilizers and pesticides in rural area in heavy showers process, as monitoring objective, realized the auto monitoring and measurement of pollution of area source, and the feature that this system also has detachably, easily install in assembling and field.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring and an automatic sampling system, is characterized in that, comprising:
For monitoring the rainfall automatic monitoring subsystem of rainfall and rainfall;
For monitoring the automatic monitoring subsystem of flow of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff that is pooled to Cipolletti weir;
For obtain the online sampling subsystem of the water sample of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff from described Cipolletti weir;
For monitoring the pollution of area source index on-line monitoring subsystem of default pollution of area source index of the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of described Cipolletti weir;
Be connected respectively with described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow, described online sampling subsystem and described pollution of area source index on-line monitoring subsystem, for the subsystem from connected, obtain data and the data that get are processed with the system of storage and controlled and data process subsystem;
Control with described system the solar powered subsystem that is connected, is used to above-mentioned subsystems power supply with data process subsystem.
2. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 1 and automatic sampling system, is characterized in that, described solar powered subsystem comprises:
For sun power being converted to electric energy and storing, be directly that described system is controlled and data process subsystem power supply, and be the solar panel of described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow, described online sampling subsystem and the power supply of described pollution of area source index on-line monitoring subsystem by described system control and data process subsystem.
3. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 1 and automatic sampling system, is characterized in that, described rainfall automatic monitoring subsystem comprises:
Be used for monitoring rainfall and rainfall, store rainfall data and the automatic rainfall meter to described system control and data process subsystem by rainfall data transmission.
4. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 3 and automatic sampling system, is characterized in that, the minimum monitoring rainfall of described automatic rainfall meter is 0.5mm.
5. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 1 and automatic sampling system, is characterized in that, the automatic monitoring subsystem of described flow comprises:
For collecting the Cipolletti weir of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff;
Be fixed on the sidewall of described Cipolletti weir, for responding to and monitor the flow of described Cipolletti weir widespread pollution from the overuse of fertilizers and pesticides in rural area runoff, and by data on flows be transferred to described system control with data process subsystem at linear flow rate automatic monitoring probing head.
6. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 5 and automatic sampling system, it is characterized in that, it is described when linear flow rate automatic monitoring probing head is not less than 0.01m/s specifically for the flow velocity at widespread pollution from the overuse of fertilizers and pesticides in rural area runoff, transmission flow velocity signal controls and data process subsystem to described system, as the instruction of opening described online sampling subsystem and pollution of area source index on-line monitoring subsystem.
7. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 5 and automatic sampling system, is characterized in that, described Cipolletti weir is compound Cipolletti weir, and the lower trapezoid of described Cipolletti weir is 60 ° of isosceles trapezoids, and the upper trapezoid of described Cipolletti weir is 45 ° of isosceles trapezoids;
The porch of described Cipolletti weir is provided with for stopping the grid of suspension;
The lower trapezoid side of described Cipolletti weir comprise an inclination angle be 10 °, for placing the groove of probe, 0.1m at the bottom of Cipolletti weir weir described in horizon distance under the notch of described groove, the notch of described groove is coated with entanglement.
8. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 7 and automatic sampling system, is characterized in that, described online sampling subsystem comprises:
Be placed in the groove of described Cipolletti weir, for gathering the widespread pollution from the overuse of fertilizers and pesticides in rural area runoff of described Cipolletti weir and removing the sampling probe of suspension wherein;
Be connected with described sampling probe, for control the unlatching of controlling water pump with the instruction of data process subsystem according to described system, according to default sampling time interval, take the sampler of water sample.
9. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 7 and automatic sampling system, is characterized in that, described pollution of area source index on-line monitoring subsystem comprises:
Be placed in the groove of described Cipolletti weir, for measure the default pollution of area source index of described Cipolletti weir widespread pollution from the overuse of fertilizers and pesticides in rural area runoff in duration of raining, record and store achievement data, achievement data is transferred to described system control and pops one's head in the pollution of area source index on-line monitoring of data process subsystem.
10. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 1 and automatic sampling system, is characterized in that, described system is controlled with data process subsystem and comprised:
Be used for the GPRS transmitter that receives data and send the data to staff;
Be connected with described GPRS transmitter, for distribute described solar powered subsystem transmission electric weight, from connected subsystem, obtain with storage data the system that transfers data to described GPRS transmitter and control and data processing chip.
11. widespread pollution from the overuse of fertilizers and pesticides in rural area on-line monitoring according to claim 10 and automatic sampling systems, is characterized in that,
Described system is controlled with data processing chip specifically for the electric weight of described solar powered subsystem transmission is distributed to described GPRS transmitter, described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow, described online sampling subsystem and described pollution of area source index on-line monitoring subsystem;
Described system is controlled with data processing chip also for after receiving the rainfall signal of described rainfall automatic monitoring subsystem, open the automatic monitoring subsystem of described flow, and after receiving the flow velocity signal of the automatic monitoring subsystem of described flow, open described pollution of area source index on-line monitoring subsystem, and set the sampling time interval of described online sampling subsystem, control described online sampling subsystem and carry out the sampling of widespread pollution from the overuse of fertilizers and pesticides in rural area runoff;
Described system is controlled with data processing chip also for receiving and store the data from described rainfall automatic monitoring subsystem, the automatic monitoring subsystem of described flow and described pollution of area source index on-line monitoring subsystem, and gives described GPRS transmitter by the data transmission of collecting.
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