CN101258827A

CN101258827A - Subdistrict greening water-saving automatic irrigation device

Info

Publication number: CN101258827A
Application number: CNA2008100583090A
Authority: CN
Inventors: 罗小林; 施卫省; 戈振杨
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2008-04-23
Filing date: 2008-04-23
Publication date: 2008-09-10

Abstract

A water saving automatic irrigation device used in the greening of residential areas is provided. The invention relates to a drip irrigation, water saving and humidity automatically controlled device used in the greening of residential areas, which pertains to a supporting facility of a group of buildings. The roof rainwater pipes of the device are connected to a reservoir which is connected to spray water pipes through pipelines and magnetic valves. A greening area is provided with a series of humidity sensors, the reclaimed water discharging tubes of a reclaimed water station are connected to the reservoir through make-up pumps and magnetic valves; water level sensors, humidity sensors and the magnetic valves, which are arranged in the reservoir are electrically connected with a measuring and controlling device. The device of the invention has high reliability and simple structure and realizes collection of rainfalls, automatic supplement and automatic regulation of the humidity of the greening drip irrigation plants of the residential areas.

Description

Subdistrict greening water-saving automatic irrigation device

Technical field

The present invention relates to a kind of subdistrict greening drip irrigation economize humidity automaton, belong to the groups of building auxiliary facility.

Background technology

The collection of rainwater and utilization are not to be strange thing, and China just has as far back as Qin Han build the pond and retain the record that rainwater is used to live period, and the history of existing centuries of the build of the Northwest's water cellar.The external collection utilizes the record of rainwater also to have no lack of precedents.And the rainwater catchment system on the real Modern Significance especially the collection utilization of urban rainwater be in about 20 years of the eighties to the nineties in 20th century, to grow up.Along with the further acceleration of urbanization, the contradiction of urban water shortage is also further deepened, and environment and ecological problem be expansion synchronously also.In order to solve a series of contradictions such as lack of water, environment, ecology, people begin notice is put into the collection and the utilization of rainwater.This problem just in time is to have solved lack of water, environment, ecological this a series of problem.Abroad early to this important function for of research starting, domestic city is collected and is utilized rainwater starting first-elected Beijing early, yet the collection of rainwater and what utilize to solve not merely is the problem of water, it can also alleviate the problems such as pressure of supply water, surface gathered water of the running water that shows huge each department day.Problems such as water and soil loss, pollution of estuary also there is certain mitigation.But the city is collected and is utilized rainwater not cause enough attention of governments at all levels.The subdistrict greening rainwater is collected all the more so.

Summary of the invention

Technical problem to be solved by this invention provides a kind of subdistrict greening water-saving automatic irrigation device, this device reliability height, unmanned, simple in structure, can finish the rainwater collection to subdistrict greening, the humidity measurement and the adjusting automatically of drip irrigation economize, greatly reduce labour intensity, save city water resource.

Solving the scheme that technical problem of the present invention adopts is: each roof downpipe is connected in the cistern, cistern is connected to each spray header by pipeline and magnetic valve again, the green belt is provided with a series of humidity sensors, and the middle water outlet pipe of middle water station is connected to cistern by make-up pump and magnetic valve; The level sensor that cistern is established, humidity sensor and each magnetic valve are electrically connected with measure and control device.

Technical scheme of the present invention also comprises: the end of the cistern 2m～4m that is above the ground level, rely on the gravity nature drip irrigation of water, and can save the energy.Measure and control device adopts the single-chip microcomputer of tape input keyboard and Output Display Unit, and level sensor adopts the digital type ultrasound wave liquid level sensor, and humidity sensor is digital humidity sensor.

Single-chip microcomputer adopts 89C51 type single-chip microcomputer, humidity sensor is that DS1820 thermometric sensing element and HMD1 type hygrometric sensing element connect into, and in HMD1 type hygrometric sensing element, inserted the A/D conversion module, because its output of DS1820 is 9 bit digital serial code, therefore need not additional any element and just can link to each other with SCM system.

During system works, single-chip microcomputer starts, and operating personnel can be by water level, the humidity range of keyboard to system's input setting.SCM system is by the liquid level of level sensor measurement rainwater cistern, and when liquid level was low to moderate a certain value, SCM system can send switching signal, and the magnetic valve in allowing on the water outlet pipe pipeline is opened, and water station make-up pump in starting simultaneously is to the cistern supplementing water.Being in a plurality of humidity sensors in the subdistrict greening measures the humidity of plant and compares with setting value, if the humidity of subdistrict greening implants has exceeded setting range, SCM system carries out automatic dripping irrigation with regard to corresponding solenoid valve on the output order control connection spray header pipeline by natural water pressure in the cistern; When subdistrict greening sprinkling irrigation humidity is in scope, just cut off the power supply of magnetic valve equipment.

The invention has the beneficial effects as follows: this greening water-saving automatic irrigation device is based on the moisture control system of single-chip microcomputer and digital temperature sensor can finish the rainwater collection to subdistrict greening, the humidity measurement and the adjusting automatically of drip irrigation economize, do not have rainwater season, the water level that water station carries out the rainwater cistern in can utilizing replenishes automatically.Reduce greening irrigation labour intensity greatly, save city water resource.

Embodiment

Fig. 1 is rainwater control process chart;

Fig. 2 is subdistrict greening drip irrigation system figure;

Fig. 3 control system workflow diagram;

Fig. 4 ultrasonic level gage and DS1820 and interface microcontroller circuit;

Fig. 5 moisture measurement schematic diagram.

Each label is represented among the figure: roof downpipe 1, magnetic valve 2, make-up pump 3, middle water station 4, middle water outlet pipe 5, sanitary sewer 6, measure and control device 7, spray header 8, magnetic valve 9, cistern 10.

Referring to Fig. 1, each roof downpipe 1 is connected in the cistern of a high ground 2m～4m in 10, collects the sleet sky and falls sleet on the roof.Cistern 10 is connected to each spray header 8 by pipeline and magnetic valve 9 again, when magnetic valve 9 is opened, the ponding of cistern 10 under action of gravity to plant nature drip irrigation; The middle water outlet pipe 5 of middle water station 4 is connected to cistern 10 by make-up pump 3 and magnetic valve 2, when the cistern water level is lower than setting value, can start water pump 3 and magnetic valve 2, replenishes drip-irrigation water in cistern 10, thus the conserve water resource.Be provided with a series of digital humidity sensors (Fig. 2,4,5) around the plant of green belt, be provided with digital type ultrasound wave liquid level sensor (Fig. 2,4) in the cistern 10, humidity sensor, ripple liquid level sensor and each

magnetic valve

2,9 are electrically connected with measure and control device 7, realize this device unmanned, automatically the purpose of work.

Single-chip microcomputer has input keyboard and Output Display Unit, adopts 89C51 type single-chip microcomputer, and humidity sensor is that DS1820 thermometric sensing element and HMD1 type hygrometric sensing element connect into, and has inserted the A/D conversion module in HMD1 type hygrometric sensing element.DS1820 adopts the product of U.S. DALLAS semiconductor company, and measurement category is-55 ℃～+ 125 ℃, and precision is ± 0.5 ℃, because its output is 9 bit digital serial code, therefore need not additional any element and just can link to each other with SCM system.Because each DS1820 has a unique series number, the data wire of a plurality of DS1820 can connect together, thereby constitutes a distributed humidity measurement system (as shown in Figure 4) in addition.HMD1 type hygrometric sensing element, humidity is that 76% o'clock capacitance is 500pF, rate of change is every+1.7pF correspondence 1%, be that humidity is 0% o'clock, capacity is 381pF, humidity be 100% o'clock be 541pF, humidity-voltage conversion circuit has been realized the conversion of humidity to voltage, voltage after the conversion is admitted to SCM system after the A/D conversion, thereby has realized the measurement (as shown in Figure 5) to humidity.

See Fig. 3, during system works, single-chip microcomputer starts, and operating personnel can be by water level, the humidity range of keyboard to system's input setting.SCM system is by the liquid level of level sensor measurement rainwater cistern, and when liquid level was low to moderate a certain value, SCM system can send switching signal, allowed magnetic valve open, water station make-up pump in starting simultaneously.The humidity of a plurality of humidity sensor measurement subdistrict greening implants is also compared with setting value, if the humidity of subdistrict greening implants has exceeded setting range.SCM system carries out automatic dripping irrigation with regard to output order control connection corresponding solenoid valve by natural pressure.When subdistrict greening drip irrigation humidity is all in scope, just cut off the power supply of magnetic valve equipment.

Claims

1, a kind of subdistrict greening water-saving automatic irrigation device, it is characterized in that: each roof downpipe is connected in the cistern, cistern is connected to each spray header by pipeline and magnetic valve again, the green belt is provided with a series of humidity sensors, and the middle water outlet pipe of middle water station is connected to cistern by make-up pump and magnetic valve; The level sensor that cistern is established, humidity sensor and each magnetic valve are electrically connected with measure and control device.

2, by the described subdistrict greening water-saving automatic irrigation device of claim 1, it is characterized in that: the end of the cistern 2m～4m that is above the ground level.

3, by the described subdistrict greening water-saving automatic irrigation device of claim 2, it is characterized in that: measure and control device adopts the single-chip microcomputer of tape input keyboard and Output Display Unit, level sensor adopts the digital type ultrasound wave liquid level sensor, and humidity sensor is digital humidity sensor.

4, by the described subdistrict greening water-saving automatic irrigation device of claim 3, it is characterized in that: single-chip microcomputer adopts 89C51 type single-chip microcomputer, humidity sensor is that DS1820 thermometric sensing element and HMD1 type hygrometric sensing element connect into, and has inserted the A/D conversion module in HMD1 type hygrometric sensing element.