CN103673339A

CN103673339A - Solar water heater intelligent control system based on single chip microcomputer

Info

Publication number: CN103673339A
Application number: CN201310718815.9A
Authority: CN
Inventors: 汪祖民; 张红梅
Original assignee: Dalian University
Current assignee: Dalian University
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2014-03-26

Abstract

The invention discloses a solar water heater intelligent control system based on a single chip microcomputer. The solar water heater intelligent control system comprises the single chip microcomputer and split modules connected with the single chip microcomputer. The split modules comprise a water storage tank temperature detecting module for detecting the temperature of water inside a water storage tank, a water level detecting module used for detecting the water level inside the water storage tank, an LCD module used for displaying the water temperature information and the water level information, an alarm module used for giving an alarm when the water level exceeds the limit, a clock module used for timing, a keyboard input module used for setting the timing time and the water temperature and a power module used for supplying electricity to the system. The solar water heater intelligent control system has the advantages that the temperature can be monitored and displayed in real time, the alarm can be given when the water storage tank is full of water, and the water temperature can be kept regularly according to the time and the temperature preset by a user.

Description

SCM Based solar water heater intelligence control system

Affiliated technical field:

The present invention relates to Smart Home field, particularly relate to a kind of SCM Based solar water heater intelligence control system.

Background technology:

Solar energy, can a large amount of non-renewable resources of let us saving with its inexhaustible feature as a kind of reproducible resource.Clean, the safe advantage of solar energy complied with the requirement of this era development progress.Along with the raising of people's living standard and the enhancing of modernization consciousness, people are more and more higher for the requirement of quality of life.Household electrical appliance intelligent, hommization are more and more subject to consumers in general's needs.Yet present most of control system of solar energy water heater function singlenesses, control inconvenience, poor anti jamming capability, this makes people when using solar water heater, have many inconvenience.

Summary of the invention

In order to overcome above-mentioned deficiency, the present invention is except having the basic function of solar water heater, as solar energy heating, Shang Shui, also designed the function of hommization more, as the automatic unlatching auxiliary heating system heating functions such as maintenance water temperature, completely warning of water, displays temperature and water level regularly.Based on energy-conservation and consideration hommization, native system has designed the function that regularly keeps water temperature.Time point and temperature that it can be set in advance according to user, the control and regulation by system realize the function that keeps this temperature at this time point.This function is specially adapted to the situation in sunlight deficiency.

The technical solution adopted in the present invention is: a kind of SCM Based solar water heater intelligence control system, comprise single-chip microcomputer, each separate module being connected with single-chip microcomputer, each described separate module comprises: for detection of the water storage box temperature detecting module of water temperature in storage tank, water level detecting module for detection of water level in storage tank, for showing the LCD LCD MODULE of water temperature information and water level information, alarm module for water level overload alarm, clock module for timing, be used for the power module of setting the keyboard input module of timing time and water temperature and being used to system power supply.

The invention has the beneficial effects as follows: the present invention has realized the function that Real-Time Monitoring shows and water is completely reported to the police of temperature, and can be according to the time of user preset and temperature maintenance water temperature regularly, feature richness, strong interference immunity, and native system is simple to operate, be easy to safeguard and upgrading.

Accompanying drawing explanation

Fig. 1. circuit system;

Fig. 2 .DS18B20 circuit;

The circuit theory diagrams of Fig. 3 .LCD LCD MODULE;

Fig. 4. overall system program flow diagram.

The specific embodiment:

By reference to the accompanying drawings and the specific embodiment, the present invention is further described.

Embodiment

According to the feature of solar water heater and the requirement to control system, the invention provides a kind of SCM Based solar water heater intelligence control system, native system comprises system hardware and two parts of software program.As shown in Figure 1, a kind of SCM Based solar water heater intelligence control system, comprise single-chip microcomputer, each separate module being connected with single-chip microcomputer, each described separate module comprises: for detection of the water storage box temperature detecting module of water temperature in storage tank, for detection of the water level detecting module of water level in storage tank, for showing the LCD LCD MODULE of water temperature information and water level information, for the alarm module of water level overload alarm, for the clock module of timing, for setting the keyboard input module of timing time and water temperature and being used to the power module of system power supply.

In the present embodiment, described water storage box temperature detecting module adopts temperature sensor DS18B20, described LCD LCD MODULE is LCD1602 display module, and described water level detecting module is segmentation liquid level sensor, and described clock module adopts clock chip DS1302.

Water temperature in DS18B20 Real-Time Monitoring storage tank, and the water temperature information exchange monitoring is crossed to LCD1602 module show; Segmentation liquid level sensor Real-Time Monitoring water level information, if water level transfinites, starts and reports to the police; System is set preheating time by keyboard input module, and clock chip DS1302 plays clocking capability, thereby user can be according to the demand Preset Time of oneself and temperature maintenance water temperature regularly.

The design of temperature detecting module circuit be the unique digital data transmission port of digital temperature sensor DS18B20 is connected with the P3.7 of single-chip microcomputer and by the temperature signal of induction real-time pass to single-chip microcomputer.Pull-up resistor R3 is that the resistance of generally selecting can be larger in order to allow DS18B20 keep a stable working environment when being connected to working power.Meanwhile, pull-up resistor can also allow DQ in idle, keep high level.

Digital temperature sensor DS18B20 can be real-time water temperature is transmitted to single-chip microcomputer, and show by display screen, allow user be well understood to Temperature Regime of Main now.In addition, the control (opening or close auxiliary heating system) that the temperature signal that single-chip microcomputer comes according to transmission carries out system again regulates and controls water temperature.

The operating key of keyboard input module is unique interface of user intervention system operation, is also the problem that user is relatively concerned about.In order to realize control system to the setting of time and temperature and Presentation Function, designed key interrupting input.Because this system function fairly simple comparatively speaking, with matrix keyboard, relatively waste, and more there is no need with keyboard drive chip, although can liberate the work cost of single-chip microcomputer higher with hardware circuit design more complicated.So finally only used simple stand-alone keypad.

LCD1602 display module circuit diagram connection line is: data port is the P2 mouth of single chip computer AT 89S52, and P2 mouth is connected with the D0-D7 mouth of LCD, and the P3.0 mouth of single-chip microcomputer is connected with the RS mouth of LCD, and P3.1 is connected with the E mouth of LCD.VSS and VDD are respectively the earth terminal of chip and connect power end, and VEE can not connect.When RS is high level, be data-signal, when it is command signal during for low level.When RW is high level, be data read mode, when it is that data are write delivery formula during for low level.E is enable signal end.So-called enable signal end refers to an input port of control chip work, and while only having this pin to be activated, chip could be worked.Generally E is that high level is effective.

Claims

1. a SCM Based solar water heater intelligence control system, it is characterized in that: comprise single-chip microcomputer, each separate module being connected with single-chip microcomputer, each described separate module comprises: for detection of the water storage box temperature detecting module of water temperature in storage tank, water level detecting module for detection of water level in storage tank, for showing the LCD LCD MODULE of water temperature information and water level information, alarm module for water level overload alarm, clock module for timing, be used for the power module of setting the keyboard input module of timing time and water temperature and being used to system power supply.

2. a kind of SCM Based solar water heater intelligence control system as claimed in claim 1, it is characterized in that: described water storage box temperature detecting module adopts temperature sensor DS18B20, described LCD LCD MODULE is LCD1602 display module, described water level detecting module is segmentation liquid level sensor, and described clock module adopts clock chip DS1302;

Water temperature in DS18B20 Real-Time Monitoring storage tank, and the water temperature information exchange monitoring is crossed to LCD1602 module show; Segmentation liquid level sensor Real-Time Monitoring water level information, if water level transfinites, starts and reports to the police; System is set preheating time by keyboard input module, and clock chip DS1302 plays clocking capability, thereby user can be according to the demand Preset Time of oneself and temperature maintenance water temperature regularly;

The unique digital data transmission port of digital temperature sensor DS18B20 be connected with the P3.7 of single-chip microcomputer and by the temperature signal of induction real-time pass to single-chip microcomputer, pull-up resistor R3 allows DS18B20 when being connected to working power, keep a stable working environment, allows DQ in idle, keep high level; The control that the temperature signal that single-chip microcomputer comes according to transmission carries out system again regulates and controls water temperature;

The operating key of keyboard input module is unique interface of user intervention system operation, adopts stand-alone keypad;

LCD1602 display module circuit diagram connection line is: data port is the P2 mouth of single chip computer AT 89S52, and P2 mouth is connected with the D0-D7 mouth of LCD, and the P3.0 mouth of single-chip microcomputer is connected with the RS mouth of LCD, and P3.1 is connected with the E mouth of LCD; VSS and VDD are respectively the earth terminal of chip and connect power end, and VEE can not connect; When RS is high level, be data-signal, when it is command signal during for low level; When RW is high level, be data read mode, when it is that data are write delivery formula during for low level; E is enable signal end.