CN202024830U - High-precision temperature sensor capable of measuring solar cell panel - Google Patents
High-precision temperature sensor capable of measuring solar cell panel Download PDFInfo
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- CN202024830U CN202024830U CN2011200905797U CN201120090579U CN202024830U CN 202024830 U CN202024830 U CN 202024830U CN 2011200905797 U CN2011200905797 U CN 2011200905797U CN 201120090579 U CN201120090579 U CN 201120090579U CN 202024830 U CN202024830 U CN 202024830U
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- solar cell
- cell panel
- temperature
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Abstract
The utility model relates to a high-precision temperature sensor capable of measuring a solar cell panel, which comprises a temperature sensing head which is clung to the solar cell panel, current output by the temperature sensing head is converted to voltage by a resistor and then is transmitted onto an AD623, after being converted, voltage signals on the AD623 are transmitted into an MC14433 which outputs and transmits data into a single chip microcomputer, after data treatment, the output end of the single chip microcomputer is connected with the input end of a RS485 chip, and the output end of the RS485 chip is connected with an upper machine and is displayed by a display screen. The high-precision temperature sensor capable of measuring the solar cell panel has extremely linearity and high precision, is high in output impedance, strong in interchanging performance and easy for system integration, can realize the function of monitoring the temperature of the solar cell panel, and is beneficial to real-time observation on the working efficiency of the solar cell panel, thus providing beneficial data for the power generating condition of a whole photovoltaic power generating system.
Description
Technical field
The utility model relates to the technical field of Mechatronic Engineering, the especially a kind of temperature sensors of high precision that can measure solar panel.
Background technology
Temperature sensor is can experience temperature and convert the sensor of usable output signal to or utilize the temperature variant rule of the various physical propertys of material the sensor of temperature transition for electric weight, because present employed temperature sensor has multiple:
One, thermopair: advantage: have be easy to use, extremely low cost and utmost point wide temperature range (200 ℃～2000 ℃) and sturdy and durable, polytype is arranged, medium accuracy (1%-3%); Shortcoming: muting sensitivity (40-80uV/ ℃), low corresponding speed (several seconds), aging and drift is non-linear during high temperature, and low stability needs the external reference end;
Two, thermistor: advantage: be easy to connection and response fast, low cost, high sensitivity, high output amplitude, equistability in being easy to exchange, small size; Shortcoming: narrow temperature scope (up to 150 ℃), big temperature coefficient (4%/℃), non-linear, intrinsic self-heating needs external current source;
Three, RTD: advantage: very high degree of precision, superregulated property, medium linearity, many kind configurations; Shortcoming: limited temperature range (up to 400 ℃), big temperature coefficient, costliness needs external current source.
These three kinds of general precision of temperature sensor are not high, the linearity of its sensor is poor, temperature-measuring range relatively limits to, can't realize the real-time conversion of temperature on the solar panel is monitored, the work efficiency that is unfavorable for the real-time monitored solar panel is unfavorable for providing favourable data for the generating situation of overall optical photovoltaic generating system.
The utility model content
The technical problems to be solved in the utility model is: in order to overcome the problem that exists in above-mentioned, provide a kind of can real-time monitored solar cell plate temperature, have very high linearity, low cost and the high-precision a kind of temperature sensors of high precision that can measure solar panel.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of temperature sensors of high precision that can measure solar panel, has the Temperature probe (AD592) that is close on the solar panel successively, AD623, MC14433, single-chip microcomputer and RS485 chip and the host computer that is connected with the RS485 chip, described Temperature probe output current is transported on the AD623 through converting voltage to behind the resistance, voltage signal on the AD623 is transferred to MC14433 after conversion, the MC14433 output data is transferred to single-chip microcomputer, single-chip data is handled the back output terminal and is connected with RS485 chip input end, the RS485 chip output is connected with host computer and shows by display screen, the data maximum transmission rate of RS485 is 10Mbps, the RS485 interface is the combination of adopting balance driver and differential receiver, and noise immunity is good.
Described AD623 is the high-precision meter transport and placing device, the detected electric current of Temperature probe can be converted to form through resistance to amplify 10 times voltage.
Described MC14433 is an A/D converter, wherein integrated all CMOS mimic channel and the digital circuits of double integral A/D converter, it is few to have outward element, the input impedance height, low in energy consumption, supply voltage wide ranges, characteristics such as precision height, and have automatic zero adjustment and auto polarity translation function, as long as external a spot of resistor-capacitor unit can constitute an A/D converter of finishing.
The actual detected of this temperature sensors of high precision is to adopt a simple transistor p-n junction, changes by measuring its base-emitter junction voltage (VBE) detected temperatures.The voltage at p-n junction two ends has about 2mV/ ℃ intrinsic temperature dependence.This is also referred to as diode temperature sensor.By built-in ADC digitizing is carried out in the simulation output of sensor, can be obtained its numeral output.
The beneficial effects of the utility model are, a kind of temperature sensors of high precision that can measure solar panel of the present utility model, have high linearity and high precision (about 1%), the output impedance height, interchangeability is strong, be easy to the system integration, a numeral output can be provided and can in a quite useful scope, carry out temperature survey, and can realize the function of real-time monitoring cell panel temperature, help real-time monitored, thereby provide favourable data for the generating situation of overall optical photovoltaic generating system the solar panel work efficiency.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structured flowchart of the present utility model.
1. Temperature probes among the figure, 2. single-chip microcomputer, 3.RS485 chip, 4. host computer.
Embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of temperature sensors of high precision that can measure solar panel as shown in Figure 1, has the Temperature probe 1 that is close on the solar panel, Temperature probe 1 output current is transported on the high-precision meter transport and placing device through converting voltage to behind the resistance, voltage signal on the high-precision meter transport and placing device is transferred to A/D converter after conversion, the A/D converter output data is transferred to single-chip microcomputer 2, output terminal is connected with RS485 chip 3 input ends after single-chip microcomputer 2 data processing, and RS485 chip 3 output terminals are connected with host computer 4 and show by display screen.
The enlargement factor of table 1 high-precision meter transport and placing device AD632 (required gain resistor value)
Principle of work of the present utility model: Temperature probe 1 is close on the solar panel, Temperature probe 1 is along with the variation of temperature output current produces linear variation, electric current converts voltage to through resistance, difference is input on the high-precision meter transport and placing device chip, thereby obtain the required voltage signal, send into single-chip microcomputer 2 through producing data behind the A/D converter, handle the back through single-chip microcomputer 2 and finally show that by being with the RS485 chip 3 of isolating to be transferred to host computer 4 backs the pass of solar panel work efficiency and temperature is: Icc=Ki*E on display screen; Icc: the short-circuit current that solar panel produces under the solar irradiation; Ki: the scale-up factor relevant with temperature; E: the irradiance that solar panel produces.
Claims (3)
1. the temperature sensors of high precision that can measure solar panel, it is characterized in that: have the Temperature probe (1) that is close on the solar panel successively, AD623, MC14433, single-chip microcomputer (2) and RS485 chip (3) and the host computer (4) that is connected with RS485 chip (3), described Temperature probe (1) output current is transported on the AD623 through converting voltage to behind the resistance, voltage signal on the AD623 is transferred to MC14433 after conversion, the MC14433 output data is transferred to single-chip microcomputer (2), output terminal is connected with RS485 chip (3) input end after single-chip microcomputer (2) data processing, and RS485 chip (3) output terminal is connected with host computer (4) and shows by display screen.
2. a kind of temperature sensors of high precision that can measure solar panel according to claim 1 is characterized in that: described AD623 is the high-precision meter transport and placing device.
3. a kind of temperature sensors of high precision that can measure solar panel according to claim 1 is characterized in that: described MC14433 is an A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200905797U CN202024830U (en) | 2011-03-31 | 2011-03-31 | High-precision temperature sensor capable of measuring solar cell panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200905797U CN202024830U (en) | 2011-03-31 | 2011-03-31 | High-precision temperature sensor capable of measuring solar cell panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024830U true CN202024830U (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200905797U Expired - Fee Related CN202024830U (en) | 2011-03-31 | 2011-03-31 | High-precision temperature sensor capable of measuring solar cell panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202024830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888066A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and WIFI transmission |
| CN103888064A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and RFID transmission |
-
2011
- 2011-03-31 CN CN2011200905797U patent/CN202024830U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888066A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and WIFI transmission |
| CN103888064A (en) * | 2014-04-03 | 2014-06-25 | 苏州边枫电子科技有限公司 | Remote monitor type photovoltaic connecting box based on semiconductor temperature measurement and RFID transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20120331 |