CN202372838U - Comfort degree control system based on automatic voltage regulator (AVR) singlechip - Google Patents
Comfort degree control system based on automatic voltage regulator (AVR) singlechip Download PDFInfo
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- CN202372838U CN202372838U CN2011204866541U CN201120486654U CN202372838U CN 202372838 U CN202372838 U CN 202372838U CN 2011204866541 U CN2011204866541 U CN 2011204866541U CN 201120486654 U CN201120486654 U CN 201120486654U CN 202372838 U CN202372838 U CN 202372838U
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Abstract
The utility model relates to the technical field of singlechip control and provides a comfort degree control system based on an automatic voltage regulator (AVR) singlechip. The control system comprises an upper computer and a lower computer, wherein the upper computer and the lower computer are connected through an RS232 circuit to realize level switch between the upper computer and the lower computer; the upper computer adopts a personal computer (PC) which calculates according to data acquired in real time and generates control signals, and the control signals are transmitted to the lower computer through the RS232 circuit; and the lower computer is provided with a singlechip control system which executes control action to realize intelligent control over a fan and an air conditioner. By the control system, wind velocity and temperature and humidity in the room can be accurately measured, and the fan and the air conditioner can be accurately controlled by the singlechip according to a control command sent by the upper computer, so that automatic intelligent control can be realized.
Description
Technical field
The utility model relates to the single-chip microcomputer control technology field, particularly a kind of comfort level control system based on the AVR single-chip microcomputer.
Background technology
The modern society people spend indoor the time more than 85%, and people are also more and more high for environment requirement, so the quality of indoor environment all has direct influence to physical and mental health, comfort level and the work efficiency of human body.The two nodal analysis method theories that the SET* index is regulated with human body temperature are the basis.Physical process analysis by people's body heat transferring draws comprehensive hot comfort index, predicts the heat reflection of human body under the thermal environment with the SET* index.Through the input environment variable and with the subjective variable of relating to persons, utilize two-layer surface model to calculate, psk* and H obtain SET*.
Accounting for leading control mode at present in the control of China to indoor environment is to control to the HVAC control system that is target with comfort index (like PMV or SET* index); With the indoor temperature is controlling object rather than people's comfort level, has ignored its dependent variable relevant with the human thermal comfort degree, because indoor environment HVAC system is a very complicated system; Have time variation and high nonlinearity characteristics; It is very difficult setting up its accurate model, and therefore most of air-conditionings are temperature to be set within certain value or certain scope carry out control corresponding, and it is undesirable to cause controlling effect; Many times can not satisfy the needs of people to thermal comfort; Also can cause simultaneously the increase of air-conditioning system operating cost and energy consumption, the demand increase to the energy and electric power is unfavorable for energy-saving and emission-reduction.
Summary of the invention
The purpose of the utility model is to overcome the shortcoming and defect of prior art; A kind of comfort level control system based on the AVR single-chip microcomputer is provided; This control system can accurately be measured indoor wind speed and humiture; The monolithic function is controlled fan and air-conditioning according to the control command that host computer sends over accurately, realizes automatic intelligent control.
The purpose of the utility model realizes through following technical proposals:
A kind of comfort level control system based on the AVR single-chip microcomputer, this control system comprises host computer and slave computer, said host computer is connected through the RS232 circuit with slave computer, realizes the level conversion between host computer and the slave computer; Said host computer adopts PC; PC calculates according to each association that collects in real time; Produce control signal, this control signal is sent to slave computer through the RS232 circuit, and said slave computer is provided with single-chip computer control system; Carry out control action by single-chip computer control system, realize Based Intelligent Control fan and air-conditioning.
Said single-chip computer control system comprises detection module and execution module, and said detection module comprises wind speed detection module and humiture detection module; Said execution module comprises fan control module, air-conditioning control module.
Said wind speed detection module adopts wind speed transmitter STF30AB30 to carry out the measurement of air speed data; Said humiture detection module adopts digital hygro sensor SHT75 to carry out the measurement of humiture data.
Said fan control module comprises controllable silicon trigger module and zero passage detection module; Said controllable silicon trigger module adopts the method for series connection bidirectional thyristor variable voltage control; Thyristor is adopted the control mode of phase shift triggering; At first the zero crossing to civil power detects; As confirming to send trigger pulse RP constantly, through changing the triggering phase place of thyristor, realize pressure regulation then thereby change output voltage waveforms; Said zero passage detection module utilizes single-chip microcomputer to catch the look-at-me at civil power zero crossing place, detects the civil power zero crossing, and shutoff or the conducting of then the timer of detected zero crossing and single-chip microcomputer being controlled bidirectional triode thyristor realize speed governing.
Said single-chip microcomputer adopts AVR series monolithic ATmega8 as controller.
Said air-conditioning control module is made up of the infrared emission circuit, launches after binary data to be sent is modulated into the series of pulses string signal, realizes the control to air-conditioning.
The utility model compared with prior art; This comfort level control system can accurately be measured indoor wind speed and humiture; The monolithic function is controlled fan and air-conditioning according to the control command that host computer sends over accurately, realizes automatic intelligent control.In energy-conservation, also brought facility to people.Satisfying under the situation of human comfort, manually control with respect to traditional perception, adopt the comfort level control system of the utility model can reach better energy-saving effect.
Description of drawings
Fig. 1 is the control system block diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the enforcement of the utility model is further described, but the enforcement of the utility model is not limited thereto.
As shown in Figure 1, be the control system block diagram of the utility model, a kind of comfort level control system based on the AVR single-chip microcomputer comprises host computer and slave computer, said host computer and slave computer are through realizing the level conversion between host computer and the slave computer through the RS232 circuit.
Host computer adopts PC, and PC calculates according to each association that collects in real time, produces control signal, and this control signal is sent to slave computer through serial ports.
Slave computer is provided with single-chip computer control system, carries out control action by single-chip computer control system, realizes the Based Intelligent Control to fan and air-conditioning.Single-chip computer control system comprises detection module and execution module.Single-chip microcomputer adopts AVR series monolithic ATmega8 as controller.
Detection module comprises wind speed detection module and humiture detection module.The wind speed detection module adopts wind speed transmitter STF30AB30 to carry out the measurement of air speed data; The humiture detection module adopts digital hygro sensor SHT75 to carry out the measurement of humiture data.The humiture detection module adopts two digital hygro sensor SHT75, two shared clock lines of digital hygro sensor SHT75.Execution module comprises fan control module, air-conditioning control module.Fan control module comprises controllable silicon trigger module and zero passage detection module; The controllable silicon trigger module adopts the method for series connection bidirectional thyristor variable voltage control; Thyristor is adopted the control mode of phase shift triggering; At first the zero crossing to civil power detects; As confirming to send trigger pulse RP constantly, through changing the triggering phase place of thyristor, realize pressure regulation then thereby change output voltage waveforms; Said zero passage detection module utilizes single-chip microcomputer to catch the look-at-me at civil power zero crossing place, detects the civil power zero crossing, and shutoff or the conducting of then the timer of detected zero crossing and single-chip microcomputer being controlled bidirectional triode thyristor realize speed governing; The air-conditioning control module is made up of the infrared emission circuit, launches after binary data to be sent is modulated into the series of pulses string signal, realizes the VSC to air-conditioning.
Wind speed transmitter STF30 has sensitive response to very low velocity, and it is optional to measure range, and operating temperature range is-10 ~+50 ℃.Under the 24VDC power supply; Be output as the standard signal of 4-20mA or 0-10V; And output current and wind speed are linear, and current signal is obtained voltage signal through sampling resistor, just can calculate the wind speed size according to the linear relationship of voltage and electric current and electric current and wind speed.
Digital temperature/humidity sensor SHT75 has comprised relative humidity sensor, temperature sensor, amplifier, 14 A/D converters, calibration storage, random access memory, CRC (CRC) generator and digital IIC interfaces etc.Temperature measurement range is-40 ~ 254.9 ℃, and the moisture measurement scope is 0 ~ 100%RH.Utilize temperature and relative humidity sensor to produce the signal of temperature and relative humidity respectively, through amplifying, deliver to A/D converter respectively and carry out analog to digital conversion then, carry out the verification communication by CRC and reach I at last
2The C bus is connected with single-chip microcomputer with clock line through data line DATA, realizes direct digital quantity output.
The infrared transmission module transmitting terminal is when sending data, and earlier binary data to be sent being modulated into frequency is that 38KHz, dutycycle are the square wave of 1:3.This signal adds to infrared transmitting tube through the resistance current limliting after amplifying through a NPN type triode, the emission infrared signal.When PB0 was output as low level, conducting when diode is high level in carrier signal made input transistor base signal remain low level, and triode is in cut-off state all the time, makes infrared transmitting tube stop to send carrier signal.When PB0 was output as high level, diode was a cut-off state, outputed to the carrier signal that is of transistor base this moment, infrared transmitting tube emission carrier wave.Output state through continuous change PB0 just can obtain interrupted infrared carrier signal.
Claims (6)
1. the comfort level control system based on the AVR single-chip microcomputer is characterized in that this control system comprises host computer and slave computer, and said host computer is connected through the RS232 circuit with slave computer, realizes the level conversion between host computer and the slave computer; Said host computer adopts PC; PC calculates according to each association that collects in real time; Produce control signal, this control signal is sent to slave computer through the RS232 circuit, and said slave computer is provided with single-chip computer control system; Carry out control action by single-chip computer control system, realize Based Intelligent Control fan and air-conditioning.
2. according to the said comfort level control system based on the AVR single-chip microcomputer of claim 1, it is characterized in that said single-chip computer control system comprises detection module and execution module, said detection module comprises wind speed detection module and humiture detection module; Said execution module comprises fan control module, air-conditioning control module.
3. according to the said comfort level control system of claim 2, it is characterized in that said wind speed detection module adopts wind speed transmitter STF30AB30 to carry out the measurement of air speed data based on the AVR single-chip microcomputer; Said humiture detection module adopts digital hygro sensor SHT75 to carry out the measurement of humiture data.
4. according to the said comfort level control system of claim 2, it is characterized in that said fan control module comprises controllable silicon trigger module and zero passage detection module based on the AVR single-chip microcomputer; Said controllable silicon trigger module adopts the method for series connection bidirectional thyristor variable voltage control; Thyristor is adopted the control mode of phase shift triggering; At first the zero crossing to civil power detects; As confirming to send trigger pulse RP constantly, through changing the triggering phase place of thyristor, realize pressure regulation then thereby change output voltage waveforms; Said zero passage detection module utilizes single-chip microcomputer to catch the look-at-me at civil power zero crossing place, detects the civil power zero crossing, and shutoff or the conducting of then the timer of detected zero crossing and single-chip microcomputer being controlled bidirectional triode thyristor realize speed governing.
5. according to the said comfort level control system of claim 1 ~ 4, it is characterized in that said single-chip microcomputer adopts AVR series monolithic ATmega8 as controller based on the AVR single-chip microcomputer.
6. according to the said comfort level control system of claim 2 based on the AVR single-chip microcomputer; It is characterized in that; Said air-conditioning control module is made up of the infrared emission circuit, launches after binary data to be sent is modulated into the series of pulses string signal, realizes the control to air-conditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204866541U CN202372838U (en) | 2011-11-30 | 2011-11-30 | Comfort degree control system based on automatic voltage regulator (AVR) singlechip |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204866541U CN202372838U (en) | 2011-11-30 | 2011-11-30 | Comfort degree control system based on automatic voltage regulator (AVR) singlechip |
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| CN202372838U true CN202372838U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204866541U Expired - Fee Related CN202372838U (en) | 2011-11-30 | 2011-11-30 | Comfort degree control system based on automatic voltage regulator (AVR) singlechip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426446A (en) * | 2011-11-30 | 2012-04-25 | 华南理工大学 | Comfort control system based on AVR single chip |
| CN104501865A (en) * | 2014-12-12 | 2015-04-08 | 广西瀚特信息产业股份有限公司 | Environmental parameter monitor and monitoring method |
-
2011
- 2011-11-30 CN CN2011204866541U patent/CN202372838U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426446A (en) * | 2011-11-30 | 2012-04-25 | 华南理工大学 | Comfort control system based on AVR single chip |
| CN104501865A (en) * | 2014-12-12 | 2015-04-08 | 广西瀚特信息产业股份有限公司 | Environmental parameter monitor and monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141130 |
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| EXPY | Termination of patent right or utility model |