CN103808423A - Digital bus multipoint temperature monitoring method - Google Patents
Digital bus multipoint temperature monitoring method Download PDFInfo
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- CN103808423A CN103808423A CN201310128116.9A CN201310128116A CN103808423A CN 103808423 A CN103808423 A CN 103808423A CN 201310128116 A CN201310128116 A CN 201310128116A CN 103808423 A CN103808423 A CN 103808423A
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Abstract
The invention discloses a digital bus multipoint temperature monitoring method. The method comprises at least two temperature sensors, a digital signal collector and a circuit for connecting the temperature sensor to the digital signal collector, wherein the at least two temperature sensors and the digital signal collector are arranged at a temperature monitoring point of a solar pane in a mutual serial connection mode; the digital signal collector is connected to a computer. Digital temperature signals are directly outputted. The temperature sensor is connected in series to the circuit in a total running direction, so that a cable wire is saved, and the input cost of a solar power plant is reduced. The temperature sensor is arranged around a solar panel to be monitored, so that the temperature of the solar panel can be monitored in a large scale without a dead angle.
Description
Technical field
The present invention relates to field of solar thermal power generation and solar cell monitoring field, be specifically related to a kind of number bus multipoint temperature monitoring method, be used for monitoring the temperature of solar panel.
Background technology
Sun power (Solar Energy): the sun is a huge energy, it launches approximately 3.8 × 10MW energy with form space-ward p.s. of optical radiation, have 1/2200000000th to project on the earth, after sunshine, is absorbed atmospheric envelope reflection, also have 70% to be transmitted to ground.However the sun power that, the earth received in upper one year is still up to 1.8 × 10kWh.
Form the biological just main light and heat existence providing with the sun from the earth, and also understand with sun dry part from ancient human, and as the method for preserving food, as salt manufacturing and solarization cured fish etc.But under fossil fuel reduces, just intentionally sun power is further developed.The utilization of sun power has Passive use (photo-thermal conversion) and two kinds of modes of opto-electronic conversion.A kind of emerging regenerative resource of solar electrical energy generation.Sensu lato sun power is the source of many energy on the earth, as wind energy, and chemical energy, potential energy of water etc.
Sun power is a kind of clean reproducible new forms of energy, is more and more subject to people's favor, has effect widely in people's life, work, and one of them is converted to electric energy by sun power exactly, and solar cell utilizes the sun workable exactly.The principle of work in solar heat power station is to utilize the sunshine converging, and water is burnt to seething with excitement and becomes water vapor, is then used for generating electricity.
Solar electrical energy generation mode solar electrical energy generation has two kinds of modes, and one is light-heat-electric conversion regime, and another kind is directly conversion regime of light-electricity.
(1) light-heat-electric conversion regime, by the heat energy power-generating that utilizes solar radiation to produce, is generally the steam that by solar thermal collector, absorbed thermal power transfer is become to working medium, then driving steam turbine generating.Previous process is light-hot transfer process; A rear process is heat-electric transfer process, the same with common thermal power generation.The shortcoming of solar energy thermal-power-generating is that efficiency is very low and cost is very high, at least than common thermal power station expensive 5～10 times of the investments of estimating it. the solar heat power station of a 1000MW need to be invested 20～2,500,000,000 dollars, and the investment of average 1kW is 2000～2500 dollars.Therefore, be suitable for special on a small scale occasion, and extensive utilization is very uneconomical economically, can't compete mutually with common thermal power station or nuclear power station.
(2) the direct conversion regime which of light-electricity is to utilize photoelectric effect, and solar radiant energy is directly changed into electric energy, and the basic device of light-electricity conversion is exactly solar cell.Solar cell is a kind of device that due to photovoltaic effect, solar energy is converted into electric energy, it is a semiconductor photo diode, when solar irradiation is on photodiode time, photodiode will become the luminous energy of the sun into electric energy, generation current.Just can become and have the solar cell array of larger output power when many batteries are together in series or parallel.Solar cell is a kind of coming novel power supply, has permanent, spatter property and the large advantage of dirigibility three. solar battery life is long, as long as the sun exists, solar cell just can once be invested and use for a long time; Compared with thermal power generation, nuclear energy power generation, solar cell can not cause environmental pollution; Solar cell can large, medium and smallly develop simultaneously, and arrives greatly the medium-sized power station of gigawatt, and little of a solar battery group for a family, this is that other power supply is incomparable.
No matter be the solar electrical energy generation of which kind of mode, all use solar cell, because the output power of solar components depends on the factor such as solar irradiance and solar cell temperature, therefore the measurement of solar module is very important, need to monitor at any time the temperature of solar cell in solar power plant.
Traditional temperature monitoring has two kinds of modes, adopts thermal resistance and thermocouple monitoring.What thermal resistance was monitored is the resistance of resistance, and the variation of dut temperature is directly to measure by the variation of thermal resistance resistance, and therefore, the variation meeting of the various conductor resistances such as the extension line of thermoelectricity resistance body brings impact to temperature survey.When thermocouple monitoring temperature, temperature signal converts thermopower signal to, converts the temperature of measured medium by electric meter (secondary instrument) to.These two kinds of modes all will be carried out the operation of simulating signal conversion digital signal, and, each thermal resistance or thermopair will be connected directly to temperature observation circuit, it between thermal resistance or thermopair, is relation in parallel, and solar panel area is very large, while applying above-mentioned two kinds of monitoring methods, just need the connecting line between a large amount of thermal resistances or thermopair and observation circuit, when causing economic loss, a large amount of electric wires also affects the measuring accuracy of thermal resistance and thermopair.
The present invention proposes based on the problems referred to above.
Summary of the invention
The object of this invention is to provide a kind of precision high, save the temperature monitoring method of circuit connecting wire.
Another object of the present invention is to provide a kind of temperature monitoring method that can record temperature sensor location.
In order to achieve the above object, the technical solution used in the present invention is: a kind of number bus multipoint temperature monitoring method, at least two temperature sensors are connected mutually, be connected on digital signal acquiring plate by a number bus, temperature signal is transferred on digital signal acquiring plate and is transferred in computing machine by communication interface after treatment by temperature sensor.
Described temperature sensor is the unibus digital temperature sensor through silicon chip processing.
On described arbitrary temperature sensor, be provided with unique ID, the ID difference arranging on described all temperature sensors.
Described temperature sensor is arranged on solar panel temperature monitoring point.
Described digital signal acquiring device is made up of interconnective microprocessor and signal processor.
In described computing machine, be provided with the thermograph file of storing temperature signal.
The power supply of described monitoring method can be small-sized solar panel or accumulator or alternating current or direct current.
Described communication interface is RS485 interface.
Take technique scheme, the present invention has following beneficial effect:
1, the present invention adopts digital temperature sensor, does not need secondary acquisition to calculate, and can directly export digital temperature signal.
2, temperature sensor of the present invention is connected on a circuit, and total trend is mutual series connection, has saved cable, saves the input cost of solar power plant.
3, temperature sensor of the present invention is arranged at the solar cell panel area that will monitor, can monitor on a large scale the temperature on solar panel, without dead angle.
4, digital bus multipoint temperature monitoring method of the present invention, can adopt multiple power sources as the energy, convenient connection and installation.
Accompanying drawing explanation
Fig. 1 is a kind of number bus multipoint temperature monitoring method structural drawing of the present invention.
Fig. 2 is the process flow diagram of a kind of number bus multi-point temp detection method of the present invention.
Embodiment
Below in conjunction with accompanying drawing to a kind of number bus multipoint temperature monitoring method of the present invention, be described in detail, as shown in Figure 1, a kind of number bus multipoint temperature monitoring method of the present invention, at least two temperature sensors are connected mutually, be connected on digital signal acquiring plate by a number bus, temperature signal is transferred on digital signal acquiring plate and is transferred in computing machine by communication interface after treatment by temperature sensor.Comprise mutual series connection at least two temperature sensors 2 that are arranged on solar panel temperature monitoring point, digital signal acquiring device 3, connect the circuit of temperature sensor to digital signal acquiring device, described digital signal acquiring device is connected on computing machine 1.Temperature sensor 2 is unibus digital temperature sensor.On arbitrary temperature sensor, be provided with unique ID, the ID difference arranging on described all temperature sensors.Temperature sensor is arranged on solar panel temperature monitoring point.Digital signal acquiring device is made up of interconnective microprocessor and signal processor.In computing machine, be provided with the thermograph file of storing temperature signal.The power supply of monitoring method can be small-sized solar panel or accumulator or alternating current or direct current.
On monitoring device, be connected with cable, cable can be selected 227IEC53 copper core insulation pvc sheath flexible cord, is connected with multiple temperature sensors on cable, and temperature sensor can be selected unibus digital temperature sensor DS18B20; Also include computing machine, on computing machine, be connected with RS-485/RS-232 protocol converter by RS-232 communication bus, monitoring device is connected with RS-485/RS-232 protocol converter by RS-485 communication bus.
Monitoring device also comprises decoupling capacitor and the special connection to ground wire, described decoupling capacitor comprises capacitor C 22～C26, when monitoring device circuit board wiring, decoupling capacitor one end is connected to respectively the power pin of chip ATmegal128L, DS1302, MAX485, MAX232, the other end is connected to ground wire, is used for guaranteeing the stability of each chip power power supply; Described special connection be first by the working power of all chips that are connected with single-chip microcomputer on monitoring device circuit board digitally and the power supply used of mould/number conversion connect respectively in analog, finally by wire, these two kinds of ground wires are connected again.
Monitoring device is that core forms by single-chip microcomputer, can the temperature data monitoring be shown in real time, be stored, user can carry out function setting to method by the control button on monitoring device, such as design temperature overload alarm threshold values, data holding time interval etc.Method is in order to meet the needs of large area multi-point temperature measurement, and by RS-485 bus, by multiple monitoring device network consistings, each monitoring device drives a cable for measuring temperature, forms temperature probe row.The temperature data of all monitoring devices arrives computing machine by RS-485 bus, RS-485/RS-232 protocol converter, RS-232 bus transfer, show on computers in real time, data are stored as database form, facilitate the management of data and the generation of various forms.Each monitoring device is powered by the power supply adaptor of an ac/dc.Fig. 1 has represented the common structure of method, and user also can be according to the quantity that need to select monitoring device of actual thermometric, the different temp measuring method of composition scale.
After user has set the threshold values of temperature over-range warning, once monitor temperature has exceeded design temperature, monitoring device will be reported to the police by warning circuit, prevents unexpected generation.Communicating circuit comprises two kinds of communication buses, and RS-232 and RS-485 can meet the communication need of different scales method, facilitate user to select.
Multiple temperature sensors are connected mutually, are connected on digital signal acquiring plate by a number bus, and temperature signal is transferred on digital signal acquiring plate and transferred in computing machine by communication interface after treatment by temperature sensor.
Take technique scheme, the present invention has following beneficial effect:
1, the present invention adopts digital temperature sensor, does not need secondary acquisition to calculate, and can directly export digital temperature signal.
2, temperature sensor of the present invention is connected on a circuit, and total trend is mutual series connection, has saved cable, saves the input cost of solar power plant.
3, temperature sensor of the present invention is arranged at the solar cell panel area that will monitor, can monitor on a large scale the temperature on solar panel, without dead angle.
4, digital bus multipoint temperature monitoring method of the present invention, can adopt multiple power sources as the energy, convenient connection and installation.
Embodiment in above-described embodiment is only that the preferred embodiments of the present invention are described; not the spirit and scope of the present invention are limited; do not departing under the prerequisite of design philosophy of the present invention; the various changes and modifications that in this area, professional and technical personnel makes technical scheme of the present invention, all belong to protection scope of the present invention.
Claims (8)
1. a number bus multipoint temperature monitoring method, it is characterized in that: at least two temperature sensors are connected mutually, be connected on digital signal acquiring plate by a number bus, temperature signal is transferred on digital signal acquiring plate and is transferred in computing machine by communication interface after treatment by temperature sensor.
2. a kind of number bus multipoint temperature monitoring method according to claim 1, is characterized in that: described temperature sensor is the unibus digital temperature sensor through silicon chip processing.
3. a kind of number bus multipoint temperature monitoring method according to claim 2, is characterized in that: on described arbitrary temperature sensor, be provided with unique ID, the ID difference arranging on described all temperature sensors.
4. a kind of number bus multipoint temperature monitoring method according to claim 1, is characterized in that: described temperature sensor is arranged on solar panel temperature monitoring point.
5. a kind of number bus multipoint temperature monitoring method according to claim 1, is characterized in that: described digital signal acquiring device is made up of interconnective microprocessor and signal processor.
6. a kind of number bus multipoint temperature monitoring method according to claim 1, is characterized in that: the thermograph file that is provided with storing temperature signal in described computing machine.
7. a kind of number bus multipoint temperature monitoring method according to claim 1, is characterized in that: the power supply of described monitoring method can be small-sized solar panel or accumulator or alternating current or direct current.
8. a kind of number bus multipoint temperature monitoring method according to claim 1, is characterized in that: described communication interface is RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310128116.9A CN103808423A (en) | 2013-04-12 | 2013-04-12 | Digital bus multipoint temperature monitoring method |
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| CN201310128116.9A CN103808423A (en) | 2013-04-12 | 2013-04-12 | Digital bus multipoint temperature monitoring method |
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| CN103808423A true CN103808423A (en) | 2014-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029226A (en) * | 2020-01-21 | 2021-06-25 | 南京航空航天大学 | System and method for dynamically monitoring temperature and humidity of roadbed soil |
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| JP2002107236A (en) * | 2000-09-27 | 2002-04-10 | Seiko Epson Corp | Temperature monitoring device, printer, misassembly detection method for printer component |
| CN2733327Y (en) * | 2004-08-31 | 2005-10-12 | 中国科学院安徽光学精密机械研究所 | Totally digitalized multipoint temperature monitoring system based on intelligent temperature sensor |
| CN101551277A (en) * | 2009-05-18 | 2009-10-07 | 胡业林 | Array type multipoint temperature monitoring system |
| CN101936935A (en) * | 2010-06-29 | 2011-01-05 | 中国农业大学 | Device for measuring multiple parameters of soil |
| CN201945387U (en) * | 2011-03-06 | 2011-08-24 | 东北石油大学 | Distribution type multipoint temperature humidity detecting system based on PICI6F876A singlechip |
-
2013
- 2013-04-12 CN CN201310128116.9A patent/CN103808423A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002107236A (en) * | 2000-09-27 | 2002-04-10 | Seiko Epson Corp | Temperature monitoring device, printer, misassembly detection method for printer component |
| CN2733327Y (en) * | 2004-08-31 | 2005-10-12 | 中国科学院安徽光学精密机械研究所 | Totally digitalized multipoint temperature monitoring system based on intelligent temperature sensor |
| CN101551277A (en) * | 2009-05-18 | 2009-10-07 | 胡业林 | Array type multipoint temperature monitoring system |
| CN101936935A (en) * | 2010-06-29 | 2011-01-05 | 中国农业大学 | Device for measuring multiple parameters of soil |
| CN201945387U (en) * | 2011-03-06 | 2011-08-24 | 东北石油大学 | Distribution type multipoint temperature humidity detecting system based on PICI6F876A singlechip |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029226A (en) * | 2020-01-21 | 2021-06-25 | 南京航空航天大学 | System and method for dynamically monitoring temperature and humidity of roadbed soil |
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Application publication date: 20140521 |
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