CN106442678A - GSM water quality monitoring system - Google Patents
GSM water quality monitoring system Download PDFInfo
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- CN106442678A CN106442678A CN201610555537.3A CN201610555537A CN106442678A CN 106442678 A CN106442678 A CN 106442678A CN 201610555537 A CN201610555537 A CN 201610555537A CN 106442678 A CN106442678 A CN 106442678A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/409—Oxygen concentration cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
- G01P5/241—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by using reflection of acoustical waves, i.e. Doppler-effect
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a GSM water quality monitoring system. The GSM water quality monitoring system comprises a monitoring control system and a data collection system; the monitoring control system comprises a single chip microcomputer control system, a GSM module, a solar control module and a computer module, wherein the solar control module comprises a solar panel, an intelligent solar controller and a storage battery; the data collection system comprises a water level sensor module, a flow velocity sensor module and a dissolved oxygen sensor module; the computer module, the water level sensor module, the flow velocity sensor module, the dissolved oxygen sensor module, the intelligent solar controller and the GSM module are connected to the single chip microcomputer control system, the solar panel and the storage battery are connected to the intelligent solar controller, and the solar control module supplies electric energy to the monitoring control system. The GSM water quality monitoring system has the advantages of reliability, accuracy, practicability, advanced nature, openness, safety and maintainability.
Description
Technical field
The present invention relates to water quality monitoring system technical field, more particularly, to a kind of GSM water quality monitoring system.
Background technology
Water quality monitoring is to monitor and measure the species of pollutant, the concentration of each pollutant and variation tendency in water body, comments
The process of valency water quality condition.Monitoring range is quite varied, including not contaminated and contaminated natural water (river, river, lake, sea
And subsoil water) and various industrial water drainage etc..Main monitoring project can be divided into two big class：One class is reflection water quality condition
Aggregative indicator, such as temperature, colourity, turbidity, pH value, electrical conductivity, float, dissolved oxygen, COD and BOD etc.；
Another kind of is some noxious substances, such as phenol, cyanogen, arsenic, lead, chromium, cadmium, hydrargyrum and organic agricultural chemicals etc..For objective appraisal rivers and sea
The situation of foreign-water matter, in addition to above-mentioned monitoring project, needs to carry out the mensure of flow velocity and flow sometimes.
According to historical data incomplete statistics, between 2155 before China's liberation, once there are larger floods 1092 times, put down
All every two years just once large-scale flood generations.After foundation, and successively there is nineteen fifty-one Huaihe River flood, 1954 older
Jiang great Shui, Zhujiang River flood in 1958, the nineteen ninety-five Liaohe River and Second Songhua River flood and 1998 Changjiang Rivers, Nenjiang, Song Hua River are flowed entirely
The great flood in domain, the flood a mortal malady with regard to the Cheng Liao Chinese nation since ancient times.
The water quality collection of rivers and lakes is the important content of hydrology change work, is that flood forecasting is determined with flood control commander
The foundation of plan, is also the guarantee of common people's safety of life and property.Since the establishment of the nation, hydrologic forecast works from scratch, from point to surface
Obtain rapid development and improved.Although country increases the construction that water quality observes and predicts net in recent years, the small-sized sluice of centering
Coverage rate is less than 10%, particularly remote place, the water quality collection of small-sized sluice also with artificial reading, phone report for
Main.The a set of mode of research and inquirement scheme simple, with low cost, can directly read long-range water quality, have critically important showing
Sincere justice.
GSM (Global System For Mobile Communications global system for mobile communications), is commonly called as handss
Machine, is designed by the standardization committee that European major telecommunications operator and manufacturer form, it is in cellular system
On the basis of develop and form, belong to second filial generation digital mobile communication system.Through development for many years, GSM mobile communication is gradually improved,
It is currently development mobile communication system the most ripe.Can provide the user at present short message, call forwarding, mobile secretary,
The dozens or even hundreds of kind of business such as mobile phone speculation in stocks, IP phone.
Speed that the feature of GSM communication network is that technology is the most ripe and advanced, communication mode is many, mobile phone continues is fast, communication
Quality is good, security performance is strong, strong antijamming capability, network coverage face is especially wide, it is all to realize international automatic roaming etc.
Many advantages, the whole world has more or less a hundred countries and regions at present and establishes GSM digital mobile phone communication network.
The communication mode of the short message that GSM provides also has the advantages that very high reliability certainly, and the receipts of this business
Take the expense adding mobile phone with other communication networks comparatively, including ultra short wave communication network, very cheap.With mobile communication
Fast development, its expense also can be more and more lower.
In existing water quality monitoring, it usually needs staff carries out being analyzed after collecting sample on the spot, not only waste people
Power resource, but also lead to sample and actual water quality to there is error because of water flow variation, a kind of GSM is we have proposed for this
Water quality monitoring system.
Content of the invention
The technical problem being existed based on background technology, the present invention proposes a kind of GSM water quality monitoring system.
A kind of GSM water quality monitoring system proposed by the present invention, including monitor control system data acquisition system, described prison
Survey control system and include single-chip computer control system, gsm module, solar control module and computer module, described solar energy control
Molding block includes solar panels, intelligent solar controller and accumulator, and described data collecting system includes level sensor mould
Block, flow sensor module, dissolved oxygen sensor module, described single-chip computer control system is connected with computer module, water level passes
Sensor module, flow sensor module, dissolved oxygen sensor module, intelligent solar controller and gsm module, described intelligence is too
Sun can be connected with solar panels and accumulator by controller, and described solar control module provides electric energy, institute for monitor control system
State single-chip computer control system wirelessly to connect by gsm module data acquisition system, described single-chip computer control system controlling water level
Sensor assembly, flow sensor module, dissolved oxygen sensor module are monitored to water quality analyzing, and the data of collection is led to
Cross gsm module and be uploaded to single-chip computer control system.
Preferably, described single-chip computer control system is STC12C5A60S2 single-chip computer control system.
Preferably, described single-chip computer control system includes remote terminal, and described remote terminal is mobile phone or computer.
Preferably, described GSM water quality monitoring system can realize monitoring by monitor control system data acquisition system
Water quality data receives, processes, the water quality information of real-time reception distant station, automatically stores it is possible to realize water quality data library management,
Comprise original, historical data retrieval, inquiry, daily sheet, moon sheet year form can also be automatically generated, there is state report simultaneously
Alert, according to the warning water quality value setting, automatic sound-light alarm.
Preferably, it is provided with single-chip microcomputer and microprocessor in described single-chip computer control system, its operation principle is：User passes through
Remote terminal will send information to gsm module, and received data is carried out unpacking verification and leading to complete order by gsm module
Cross RS232 interface and descend into microprocessor, microprocessor filters to the information receiving, check whether the use being set number
What family was sent out meets the effective information of command format, single-chip microcomputer can detect address inside the command code receiving whether with the machine
Address is consistent, further according to command code collection water quality data order after address is consistent, microcomputer reads water quality sensor numerical value, and will
The water quality data collecting sends into gsm module, and data is transferred to remote terminal in short message mode by gsm module, and single-chip microcomputer is again
The secondary state Wait Order such as returning to.
Preferably, described accumulator is lead-acid battery, Ni-MH battery, nickel-cadmium cell or lithium battery, for storing electric energy.
In the present invention, telecommunication media that GSM network is gathered as water quality data, using the number based on GSM communication network
According to acquisition system and monitor control system based on self-built ultra short wave communication network, can solve in office where area carries out water quality number
According to the task of collection, long-range water quality collection is realized using GSM, this acquisition mode has very big area with conventional GPRS mode
Not, it have that networking is simpler, investment is less, reliability is higher, interface more intuitively advantage, be particularly suitable for outlying district
Small-sized sluice, the water quality information collection of reservoir, this system has reliability, accuracy, practicality, advance, opening, peace
Full property and the feature of ease for maintenance.
Brief description
Fig. 1 is a kind of block diagram of GSM water quality monitoring system proposed by the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is explained further.
With reference to Fig. 1, a kind of GSM water quality monitoring system proposed by the present invention, gather system including monitor control system data
System, described monitor control system includes single-chip computer control system, gsm module, solar control module and computer module, described
Solar control module includes solar panels, intelligent solar controller and accumulator, and described data collecting system includes water level
Sensor assembly, flow sensor module, dissolved oxygen sensor module, described single-chip computer control system is connected with computer mould
Block, level sensor module, flow sensor module, dissolved oxygen sensor module, intelligent solar controller and gsm module,
Described intelligent solar controller is connected with solar panels and accumulator, and described solar control module carries for monitor control system
For electric energy, described single-chip computer control system is wirelessly connected by gsm module data acquisition system, described single-chip computer control system
Controlling water level sensor assembly, flow sensor module, dissolved oxygen sensor module are monitored to water quality analyzing, and will gather
Data single-chip computer control system is uploaded to by gsm module.
GSM water quality monitoring system of the present invention can realize monitoring water by monitor control system data acquisition system
Matter data receiver, process, the water quality information of real-time reception distant station, storage automatically, it is possible to realize water quality data library management, is wrapped
Containing original, historical data retrieval, inquiry, daily sheet, moon sheet year form can also be automatically generated, there is state report simultaneously
Alert, according to the warning water quality value setting, automatic sound-light alarm.
In the present invention, in described single-chip computer control system, it is provided with single-chip microcomputer and microprocessor, its operation principle is：User is led to
Cross remote terminal and will send information to gsm module, received data is carried out unpacking verification and by complete order by gsm module
Microprocessor is descended into by RS232 interface, microprocessor filters to the information receiving, check whether it is to have set number
What user was sent out meets the effective information of command format, and whether single-chip microcomputer can detect address inside the command code receiving and the machine
Address consistent, gather water quality data order further according to command code after address is consistent, microcomputer reads water quality sensor numerical value,
The water quality data collecting is sent into gsm module, data is transferred to remote terminal, single-chip microcomputer in short message mode by gsm module
Turn again to wait the state of Wait Order.
Level sensor in level sensor module adopts PT pressure transmitter, and it is a kind of high performance pressure inverting
Device.Throwing static pressure liquid level transmitter is the principle proportional to the height of this liquid based on surveyed fluid pressure, using external
Advanced isolated form spreads the piezoresistive effect of silicon-sensitive element, and static pressure is converted to the signal of telecommunication, then through temperature-compensating and linear
Revise, change into the standard signal of telecommunication (generally 4-20mA).This transmitter is using diffusion silicon sensor, easy for installation, has anti-
Shaking property is good, high precision, good stability, high reliability the features such as, and greatly reduce the occupancy to single-chip processor i/o mouth.Output
Controller is made up of relay drive circuit, and the I/O of single-chip microcomputer passes through the power supply of relay drive circuit controlled motor equipment
Switch.System only, when collection, just can start sensor including automatic data collection and manual collection, so effectively prevent
The interference of collection, reduces the Acquisition Error of data, greatly reduces the Overall Power Consumption of system simultaneously.
Flow sensor in flow sensor module is supersonic Doppler flow sensor, supersonic Doppler flow velocity
Sensor is the ultrasonic measurement instrument that application ultrasonic " Doppler effect " principle is made.Detect flow velocity, measurement point with ultrasonic technology
In front of body, do not destroy flow field；Certainty of measurement is high, and flow measurement is linear, can survey instantaneous velocity, also can survey mean flow rate；No rotate
Part, does not fear silt blocking and pasture and water are wound around, and probe is sturdy and durable.It has following remarkable advantage：
(1) certainty of measurement is high, and broad quantum can be surveyed weak current, also can survey high current.Flow measurement scope：0.02-7.00m/s, measurement is accurate
Exactness：± 1.0% ± 1cm/s；
(2) sense sensitive, high resolution, do not limited by start velocity；
(3) fast response time, can survey instantaneous velocity, also can survey mean flow rate；
(4) measure linearly, there is not K, C value of calibration trace；
(5) mechanical rotating part, does not have such problems as that silt blocking or pasture and water, debris are wound around, is best suited for silt and hangs
Float content is high, measures in the river more than the floating thing such as pasture and water.
Dissolved oxygen sensor probe in dissolved oxygen sensor module is made up of a cell, and there are two metal electrodes interior simultaneously
It is filled with electrolyte, probe distal end is coated with a piece of permeable film and closes cell.Actually water and alkaline soluble materials ion
This tunic can not be passed through, but oxygen and a number of this layer film of other gas transmissive, also can ensure not to be subject to CO simultaneously2Dry
Disturb.This probe is immersed in the water and carries out DO determination.
Because Galvanic interaction or applied voltage make to produce potential difference between electrode.Due to this potential difference, metal ion is made to exist
Anode enters solution, and passes through the oxygen of film in cathodic reduction.Thus produced electric current is directly and by film and electrolyte liquid layer
The concentration partial pressure of oxygen of oxygen be directly proportional, when oxygen partial pressure changes, the amount of oxygen infiltering in film also accordingly adjusts, and electric current of popping one's head in
Also change in proportion.Because electric current significantly changes with temperature, temperature-compensating must be carried out.This instrument can be automatically right
Under different temperatures, the change of electric current compensates.Integrated circuit temperature sensor has good linear relationship, and certainty of measurement is high
And the advantages of fast response time.Sensor technology parameter is as follows：
Measurement range：0-20mg/L 0-99.9%；
Temperature applicable range：0-40℃；
Minimum division value：0.01mg/L；
Response time (T90)：＜ 20s；
Temperature-compensating error (0-40 DEG C)：＜ 3%；
Measurement error：≤±0.30mg/L；
Zero error：≤0.15mg/L；
Repeatability：≤±0.20mg/L；
Degree of stability：≤±0.20mg/L.
Gsm module, is a communication module similar to mobile phone, and some functions of being integrated with mobile phone are in one piece of little circuit board
On, it can send short message, call etc..Though module is little, it possesses the function of a lot of mobile phones, have it be equal to be exactly
Have the core of mobile phone, it suffers from being widely applied in a lot of applications, and gsm module refers to by using AT
Order could control it, and module can be connected it is also possible to be controlled with single-chip microcomputer with computer RS232 serial ports.
The present invention uses MC35i module, is the new edition gsm module of a technical grade supporting Chinese short message breath, work
Make in EGSM900 and GSM1800 two-band, power range is direct current 3.3-4.8V, resting state current drain is 3.5mA, empty
Not busy state is 25mA, and emission state is 300mA (average), and peak value is 2.5A；Voice-and-data signal can be transmitted, power consumption exists
EGSM900 (4 class) and GSM1800 (1 class) is respectively 2W and 1W, connects SIM respectively by interface connector and antenna connector
Card reader and antenna.SIM voltage be 3V/1.8V, MC35i by AT order can transmitted in both directions instruction and data, optional baud
Rate is 300b/s to 115kb/s, and auto-baud is 1.2kb/s to 115kb/s.It supports the SMS of Text and PDU form
(Short Message Service, short message), can realize restarting and fault recovery by AT order or cut-off signals.
MC35i is made up of 6 parts such as supply module (ASIC), flash memory, ZIF connector, antennal interfaces.As MC35i's
Core baseband processor mainly processes the voice-and-data signal in GSM terminal, and covers all in cellular radio equipment
Analog- and digital- function.
MC35i module has 40 pins, is connected by a ZIF (Zero Insertion Force, zero resistance socket)
Device is drawn.This 40 pins can be divided into 5 classes, i.e. power supply, data input/output, SIM, audio interface and control.
The 1-5 pin of MC35i is usual recommendation 4.2V of positive supply input pin, and 6-10 pin is power supply ground.11、12
For charging pins, can be with external lithium battery, 13 is external output voltage (external circuit use altogether), and 14 connect subzero temperature for ACCU-TEMP
The critesistor of degree coefficient, protects for lithium cell charging and controls.15 feet are to start foot IGT, system power up after for making MC35i enter
Enter working condition it is necessary to IGT plus low pulse being more than 100ms, the level decline persistent period may not exceed 1ms.16-23
For data input/output, respectively DSR0, RING0, RxD0, TxD0, CTS0, RTS0, DTR0 and DCD0.The number of MC35i module
It is actually an asynchronous serial transceiver according to input/output interface, meet ITU-T RS232 interface standard.It has fixing
Parameter：8 data bit and 1 stop position, no parity check position, baud rate is optional between 300bps～115kbps, gives tacit consent to 9600.
Hardware handshaking signal RTS0/CTS0, software flow controls uses XON/XOFF, and CMOS level supports the AT Command Set of standard.Its
In 18 foot RXD, 19 foot TXD be TTL serial communication foot, can facilitate and single-chip microcomputer is communicated.
MC35i uses circumscribed SIM, and 24-29 is SIM pin, and SIM is such connection with MC35i：On SIM
CCRST, CCIO, CCCL, CCVCC and CCGND be joined directly together by the Same Name of Ends of SIM reader and MC35i, ZIF connect
The CCIN pin of seat is used for detecting whether SIM is plugged, if connecting correct, CCIN pin exports high level, otherwise for low
Level.The 32nd foot SYNC pin of MC35i has two kinds of mode of operations, and a kind of is power growth pattern during instruction emission state,
Another kind is the working condition of instruction MC35i, and available AT order AT+SYNC switches over, and this module uses latter.When
When LED extinguishes, show that MC35i is in closing or sleep state；When LED for 600ms bright/600ms go out when, show that SIM does not have
Insertion or MC35i are carrying out network entry；When LED for 75ms bright/3s put out when, show that MC35i logs into network, be in and treat
Machine state.30th, 31,32 feet are to control foot, and wherein 30 is RTC backup, and 31 is Power down, and 32 is SYNC.35-38 is
Speech interface, 35,36 connect speaker playback.37th, 38 can directly connect Electret condenser microphone come to gather sound (37 is microphone anode,
39 is microphone negative terminal).
In the main interface of Computer module of the present invention, display receives the specifying information of equipment, including device numbering, water
The time of matter collection, current water level, current, system voltage and equipment place；Motor capable of washing and manually in main interface
Collection water quality data；System parameter setting can be carried out, data base carried out back up, recover, to the short message content receiving and send
Checked and retrieved.In order to protect software system, login system must have password, and system password is according to the gsm module whole world
The registration code of unique No. ID production is it is ensured that the safety of system.
For ensureing the precision of acquisition system, the system adopts 16 ADS1112 of low-power consumption, and it is by Texas Instruments
(TI) 16 △ ∑ pattern number converter (ADC) of the minimum encapsulation (SOT23-6) of a industry released.This series is in having
Put precision, wide dynamic range ADC of programmable gain amplifier (PGA), agitator and TW two wire I2C serial line interface.They can
Work under conditions of 2.7V to 5.5V power supply, power consumption only 0.25mW.
ADS1112 is a kind of continuous self calibration ADC, it is possible to provide Differential Input and 16 no lose code precision, are connect using I2C
Mouthful, running voltage is 2.7-5.5V single supply.The conversion speed of ADS1100 is 8,16,32,128 samples/sec (SPS), precision
Respectively reach 16,15,14 and 12.On piece, programmable gain amplifier (maximum gain is 8) allows the fainter letter of direct measurement
Number.In single translative mode, this device can automatically power off after each conversion, therefore greatly reduces the power consumption during the free time
(as little as<0.15uW).ADS1112 has 2.048V internal reference.ADS1112 can be entered with the speed of 15,30,60 or 240SPS
Row conversion operation.
In the present system, from chip X5045 as watchdog circuit master chip.X5045 is Xicor company of the U.S.
The standardization 8 foot integrated circuit producing, it is by EEPROM, WatchDog Timer, three kinds of function combinations of voltage monitoring in single core
Within piece, enormously simplify hardware designs, improve the reliability of system, decrease the space requirement to printed circuit board, fall
Low cost and system power dissipation, are a kind of preferable SCM peripheral chips.The important data of system and information can leave in
In EEPROM, prevent power down from leading to key message to be lost.
It is provided with clock circuit, predominantly system provides the function of real-time clock, so that system completion timing is gathered in the system
The function of the information such as water quality.Clock circuit chip selects time calendar clock DS1302.DS1302 is that DALLAS company of the U.S. pushes away
A kind of high-performance of going out, low-power consumption, the real time clock circuit with RAM, it can to year, month, day, Sunday, when, minute, second carries out
Timing, has leap year compensation function, and running voltage is 2.5V-5.5V.Communication is synchronized with CPU using three-wire interface, and can
Once transmit clock signal or the RAM data of multiple bytes using burst mode.Have inside DS1302 one 31 × 8 be used for face
When property deposits the ram register of data.DS1302 is the upgrading products of DS1202, compatible with DS1202, but increased main power source/
Back-up source dual power supply pin, provides the ability that back-up source is carried out with trickle current charging simultaneously.
The system adopts STC12C5A60S2 single-chip microcomputer, and it plays overall control effect to whole system.STC12C5A60S2/
AD/PWM series monolithic be macrocrystalline science and technology produce single clock/machine cycle (1T) single-chip microcomputer, be high speed/low-power consumption/surpass
A new generation 8051 single-chip microcomputer of strong anti-interference, instruction code completely compatible traditional 8051, but fast 8-12 times of speed.It is internally integrated
MAX810 Special reset circuit, 2 road PWM, 8 road 10-bit high speed A/D conversion (250K/S), for motor control, strong jamming occasion,
It specifically includes：
(1) enhancement mode 8051CPU, single clock/machine cycle, instruction code completely compatible traditional 8051.
(2) running voltage：STC12C5A60S2 series of tasks voltage：5.5V-3.3V (5V single-chip microcomputer) STC12LE5A60S2
Series of tasks voltage：(3.6V-2.2V 3V single-chip microcomputer).
(3) operating frequency range：0-35MHz, is equivalent to common 8051 0-420MHz.
(4) integrated 1280 bytes RAM on piece, user application space 8K/16K/20K/32K/40K/48K/52K/
60K/62K byte.
(5) universaling I/O port (36/40/44), after reset be：Quasi-bidirectional interface/weak pull-up (common 8051 traditional I/O mouth)
Can be set to four kinds of patterns：Quasi-bidirectional interface/weak pull-up, recommends/strong pull-up, only input/high resistant, and each I/O mouth of open-drain drives
Ability all can reach 20mA, but whole chip maximum does not exceed 55mA.
(6) ISP (in-system programmable components)/IAP (programmable applying), without Special programming, need not dedicated emulated device
User program can be directly downloaded by serial ports (P3.0/P3.1), the several seconds can complete a piece of.
(7) there is EEPROM function (the no internal EEPROM of STC12C5A62S2/AD/PWM).
(8) house dog is internally integrated MAX810 Special reset circuit (during below external crystal 12M, resetting pin can direct 1K
Resistance is to ground).
(9) outside power-fail detection circuit:Having a low voltage threshold comparator 5V single-chip microcomputer in P4.6 mouth is 1.32V, error
For +/- 5%, 3.3V single-chip microcomputer is 1.30V, and error is +/- 3%.
(10) clock source：Outside high-precision crystal/clock, internal R/C agitator (temperature drift be +/- 5% arrive +/- 10% with
Interior) user, when downloading user program, may be selected using internal R/C agitator or external crystal/clock.Internal under room temperature
R/C oscillator frequency is：5.0V single-chip microcomputer is：11MHz-15.5MHz, 3.3V single-chip microcomputer is：8MHz-12MHz, required precision is not
Gao Shi, may be selected to use internal clocking, but because having foozle and temperature drift, is defined by actual test.
(11) totally 4 16 bit timing devices：Two timer/counters compatible with traditional 8051,16 bit timing device T0 and
T1, does not have timer 2, but has independent Baud rate generator, and 2 road PCA modules added by the Baud rate generator doing serial communication
2 16 bit timing devices can be realized again.
(12) 2 clock delivery outlets, can export clock by the spilling of T0 in P3.4/T0, can be by the spilling of T1 in P3.5/T1
Output clock.
(13) external interrupt I/O mouth 7 tunnel, traditional trailing edge interrupts or low level triggering is interrupted, and newly-increased support rises
Along the PCA module interrupted, Power Down pattern can be by external interrupt wakeup, INT0/P3.2, INT1/P3.3, T0/P3.4,
T1/P3.5, RxD/P3.0, CCP0/P1.3 (also can arrange P4.2 by depositor), and CCP1/P1.4 (also can pass through depositor
P4.3 is set).
(14) A/D conversion, 10 Precision A/D C totally 8 tunnels, conversion speed is up to 250K/S (each second 250,000 times).
(15) STC12C5A60S2 series has double-serial port, after be embroidered with S2 mark just have double-serial port, RxD2/P1.2 (can lead to
Cross depositor and P4.2 be set), TxD2/P1.3 (can arrange P4.3 by depositor).
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (6)
1. a kind of GSM water quality monitoring system is it is characterised in that include monitor control system data acquisition system, described monitoring
Control system includes single-chip computer control system, gsm module, solar control module and computer module, described solar control
Module includes solar panels, intelligent solar controller and accumulator, described data collecting system include level sensor module,
Flow sensor module, dissolved oxygen sensor module, described single-chip computer control system is connected with computer module, level sensor
Module, flow sensor module, dissolved oxygen sensor module, intelligent solar controller and gsm module, described intelligent solar
Controller is connected with solar panels and accumulator, and described solar control module provides electric energy, described list for monitor control system
Piece machine control system is wirelessly connected by gsm module data acquisition system, described single-chip computer control system controlling water level sensing
Device module, flow sensor module, dissolved oxygen sensor module are monitored to water quality analyzing, and the data of collection is passed through
Gsm module is uploaded to single-chip computer control system.
2. a kind of GSM water quality monitoring system according to claim 1 is it is characterised in that described single-chip computer control system is
STC12C5A60S2 single-chip computer control system.
3. a kind of GSM water quality monitoring system according to claim 1 is it is characterised in that described single-chip computer control system bag
Include remote terminal, described remote terminal is mobile phone or computer.
4. a kind of GSM water quality monitoring system according to claim 1 is it is characterised in that described GSM water quality monitoring system can
Receive, process, the water of real-time reception distant station so that monitoring water quality data is realized by monitor control system data acquisition system
Matter information, storage automatically, it is possible to realize water quality data library management, comprises original, historical data retrieval, inquiry, acceptable
Automatically generate daily sheet, moon sheet year form, there is status alert simultaneously, according to the warning water quality value setting, automatic acousto-optic report
Alert.
5. a kind of GSM water quality monitoring system according to claim 1 is it is characterised in that in described single-chip computer control system
It is provided with single-chip microcomputer and microprocessor, its operation principle is：User will send information to gsm module, gsm module by remote terminal
Received data is carried out unpacking and verifies and complete order is descended into microprocessor, microprocessor by RS232 interface
The information receiving is filtered, checks whether it is to have set the effective information meeting command format that the user of number is sent out, single
Whether the address inside command code that the detection of piece chance receives is consistent with the address of the machine, adopts further according to command code after address is consistent
Collection water quality data order, microcomputer reads water quality sensor numerical value, the water quality data collecting is sent into gsm module, GSM mould
Data is transferred to remote terminal in short message mode by block, and single-chip microcomputer turns again to wait the state of Wait Order.
6. a kind of GSM water quality monitoring system according to claim 1 it is characterised in that described accumulator be lead-acid battery,
Ni-MH battery, nickel-cadmium cell or lithium battery, for storing electric energy.
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| CN107167570A (en) * | 2017-05-14 | 2017-09-15 | 安徽泛亚环保科技有限公司 | A kind of monitoring water quality on line system |
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