CN105091234A - Intelligent temperature and humidity control system based on mobile phone - Google Patents

Abstract

The invention discloses an intelligent temperature and humidity control system based on a mobile phone. The intelligent temperature and humidity control system comprises an air conditioner, a humidifier, a temperature and humidity collection module, an Arduino module, an infrared transmission control module and the mobile phone, wherein the temperature and humidity collection module is used for collecting indoor temperature and humidity information in real time and transmitting the collected information to the mobile phone by virtue of the Arduino module, the mobile phone is used as a control center and is used for processing the received information and then sending a control signal to the Arduino module, and the Arduino module is used for controlling the air conditioner and the humidifier to start and stop by virtue of the infrared transmission control module. According to the intelligent temperature and humidity control system, a new idea of recycling unused mobile phones is provided, additionally, the processing capacity of smartphones is fully developed, and the intelligence of an intelligent home is increased in the condition of low energy consumption; a plurality of parameters which influence user comfort and all energy consumption parts are fully considered, and energy conservation is realized at the level of a system; the cost is low, the compatibility and the expansibility are good, and a foundation is laid for constructing an intelligent city.

Description

Based on the intelligent temperature and humidity control system of mobile phone

Technical field

The invention belongs to Smart Home field, relate to a kind of intelligent temperature and humidity control system based on mobile phone.

Background technology

In Internet of Things evolution, Smart Home plays the role of seaman always.Estimate according to market survey companies such as JuniperResearch, global Smart Home market scale will reach 60,000,000,000 dollars by 2017, and compound speedup is 19%.By 2018, only Chinese Smart Home market scale just will be expected to reach nearly 1,400 hundred million RMB.But although have so wide market prospects and development potentiality, Smart Home cannot be broken through expensive all the time in recent years, poor user experience, energy consumption is large, and do not have the ring of encirclement that the problems such as unified professional standard are formed, development is gone no further.How building at low cost and can meet users'comfort requirement, intelligent home network that again can be energy-efficient, is the key issue that Smart Home further develops.

While the Information Technology Development that this class of Internet of Things is new is like a raging fire, traditional information technology, as mobile communications industry, does not stop developing step yet.In today that mobile communication technology makes rapid progress, smart mobile phone presents explosive growth, this creates good basic condition for connecting all smart machines on the one hand, provides a kind of new Smart Home developing direction, also makes the quantity of superseded mobile phone increase sharply on the other hand.According to investigations, China consumer changes a new cell-phone in average 15 months, the annual waste mobile telephone about 100,000,000 in the whole nation, and the rate of recovery is less than 1%.Idle can not get in family of mobile phone multiple functional in a large number uses, and production capacity is wasted greatly.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, a kind of intelligent temperature and humidity control system based on mobile phone is provided.

Intelligent temperature and humidity control system based on mobile phone of the present invention, comprise air-conditioning, humidifier, humiture collection module, Arduino module, Infrared Transmission control module and the mobile phone as control centre, humiture collection module is used for Real-time Collection indoor temperature and humidity information, and the information gathered is passed through Arduino module transfer to mobile phone, after mobile phone processes the information received, send control signal to Arduino module, Arduino module controls the start and stop of air-conditioning and humidifier by Infrared Transmission control module.

In technique scheme, humiture collection module is made up of DHT11 digital hygro sensor.

DHT11 digital hygro sensor is a humiture compound sensor containing calibrating data signal output, and the digital module acquisition technique of its application specific and temperature and humidity sensing technology, have higher reliability and long-time stability.The sense that sensor comprises a resistance-type is wet element and a NTC temperature element, and is connected with a high-performance 8 single-chip microcomputers.DHT11 sensor is calibrated in accurate humidity verification room, and calibration factor exists in OTP internal memory with the form of program, and sensor internal calls these calibration factors when processing detection signal.

Arduino module can adopt ArduinoMegaADK.

ArduinoMegaADK adopts the core circuit plate of USB interface, and on the different MegaADK of being exactly that it is maximum from Mega2560, Duo Liao mono-road USB main control interface is used for and the mobile phone interconnecting of android system.The processor core of MegaADK is ATmega2560, there are 54 railway digital I/O ports (wherein 16 tunnels can be used as PWM output) simultaneously, 16 tunnel analog inputs, 4 tunnel UART interface, a 16MHz crystal oscillator, a USB port, a supply socket, an ICSPheader and SR.

Infrared control module is formed primarily of infrared remote control switch.

The infrared remote control socket operating voltage adopted is 220/110 volt, and bearing power 500W, is controlled by infra-red remote control, learns code, and normal domestic use TV remote controller, VCD remote controller, DVD, EVD remote controller etc. all can carry out remote pilot.Can manual control also remote-controlled, be independent of each other, anti-interference is good.

Beneficial effect of the present invention is: the present invention can accomplish with idle mobile phone as control centre, provide a kind of new approaches of idle mobile phone recycling, fully develop the disposal ability of smart mobile phone simultaneously, improve the intelligent of Smart Home when low energy consumption; Take into full account the multiple parameters affecting user's comfortableness and each energy dissipating portion, the aspect of system has realized energy-conservation; Cost is lower, compatible and expansion is good, and for structure, intelligent city lays the foundation.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is pmv value algorithm flow chart.

Fig. 3 is hot comfort index PMV span.

Detailed description of the invention

Below in conjunction with accompanying drawing and instantiation, the present invention will be further described.

With reference to Fig. 1, intelligent temperature and humidity control system based on mobile phone of the present invention, comprise air-conditioning, humidifier, humiture collection module, Arduino module, Infrared Transmission control module and the mobile phone as control centre, humiture collection module is used for Real-time Collection indoor temperature and humidity information, and the information gathered is passed through Arduino module transfer to mobile phone, after mobile phone processes the information received, send control signal controls air-conditioning and humidifier start and stop by Infrared Transmission control module.

Air conditioner heat comfort index PMV (predicted-mean-vote) is a kind of stable model based on equation of heat balance, this model hypothesis ambient parameter does not change in time, human body is regarded as the passive recipient of extraneous thermostimulation, certain thermal environment, by carrying out with human body the physiological parameter that hot and humid area affects human body, makes human body produce different sensations.The present invention can select pmv value as hot comfort Testing index, pmv value is obtained by the humiture setting value algorithm of control centre and Energy Saving Control algorithm, judge the thermal comfort degree of indoor environment, the duty of each terminal electrical appliance of structure adjusting in acceptable thermal comfort zone again, make the corresponding energy consumption paid remain on minimum state, thus realize the target of low energy consumption, high degree of comfort.

The present invention adopt document (indoor thermal comfort index PMV analysis of Influential Factors and research [J]. Refrigeration & Air-Conditioning, 2006 (4): 19-25) in PMV mathematic(al) representation of setting up,

Wherein,

M is metabolic rate, W/s;

W is the human body rate of doing work, W/s;

P _afor steam partial pressure in surrounding air, Pa;

T _afor indoor air temperature, DEG C;

F _c1for human body and the nude surface area ratio of wearing the clothes;

T _afor mean radiant temperature, DEG C;

T _c1for people's external surface mean temperature of wearing the clothes, DEG C;

H _cfor heat exchange coefficient, W/ (sm2 DEG C).

In formula, t _c1, f _c1, h _crespectively by calculating:

$t_{c1}=35.7-0.028(M-W)-I_{c1}\{3.96\×{10}^{-8}{f}_{c1}\[{(t_{c1}+273)}^4-{(\stackrel{\‾}{t_a}+273)}^4\]+f_{c1}{h}_c(t_{c1}-t_a)\}$

$f_{c1}=\left\{\begin{array}{cc}1.00+1.290I_{c1}& I_{c1}\≤0.078\\ 1.05+0.645I_{c1}& I_{c1}>0.078\end{array}\right.$

$h_c=12.1\×\sqrt{v_{air}}$

Wherein,

I _c1for clothes thermal resistance, m ²w/K;

V _airfor the flow velocity of air, rn/s.

Due to the complexity of air-conditioning system and experiment condition limited, the comprehensively impact of each variable on human thermal comfort degree and the complexity of realization.Consider that air themperature and relative humidity affect the major factor of human thermal comfort degree (air themperature is high, relative humidity is large, and human body sensory is sultry; Air themperature is low, relative humidity is large, human body sensory is sombre), its change is the most remarkable on PMV impact, therefore this Model Selection wherein temperature and humidity 2 variablees as the controling parameters of algorithm. under prerequisite without loss of generality, setting experiment condition is: in (1) summer, outdoor temperature is higher than 30 DEG C; (2) indoor occupant carries out light weight motion.

The calculating idiographic flow of pmv value as shown in Figure 2, wherein, human body hull-skin temperature t _c1solve adopt increment convergence method.Due to t _c1between skin surface temperature and average indoor temperature, so get t _c1initial value be the mean value of skin table temperature second and average indoor temperature.If initial step length is s=0.1, steplength rule change is s=s/l00, can require to do suitable adjustment according to available accuracy.Convergency value is less than 10 ^-5t _c1value is solved for human body hull-skin temperature of wearing the clothes.

According to document (based on the energy-saving air conditioning control algolithm of hot comfort. Donghua University's journal (natural science edition), 2011 (01) .), pmv value is divided into 6 different scopes (as Fig. 3).Ideally, pmv value is 0, now human body sensory the most comfortable.But being difficult to pmv value perseverance in the time period of maintenance is in practice 0.The pmv value interval that the present invention sets thermal comfort is [-0.5,0.5].

Variations in temperature and PMV present positive correlation, and the control command of system is as table 1:

Table 1. temperature control instruction

The change of relative humidity and PMV may present positive correlation, negative correlation and independence.General when relative humidity is between 45% ~ 60%, human body sensory is comfortable.Under experiment condition of the present invention, relative humidity control command is as table 2:

The instruction of table 2. humid control

Because refrigeration or the energy consumption needed that heats up are greater than the energy consumption that relative humidity controls needs. in order to reach energy-conservation optimal effectiveness, pass through optimal control policy, under identical temperature environment, the impression of human thermal comfort and the relative humidity relation of air very large, especially when people are at aggravating activities or when being engaged in manual labor, the impact of relative humidity is more remarkable. and therefore first system judges indoor relative humidity R _hvalue, works as R _htime ∈ [45%, 60%], system unconditionally carries out humid control to reach energy-saving effect.After rh value is stabilized to Rh ∈ [45%, 60%] scope, checks pmv value, when pmv value >=0.5, freeze; When pmv value≤-0.5, heat.According to above-mentioned control strategy, human thermal comfort degree index can be reached the soonest, and keep high energy-saving effect.

Claims (3)

1. based on the intelligent temperature and humidity control system of mobile phone, it is characterized in that, comprise air-conditioning, humidifier, humiture collection module, Arduino module, Infrared Transmission control module and the mobile phone as control centre, humiture collection module is used for Real-time Collection indoor temperature and humidity information, and the information gathered is passed through Arduino module transfer to mobile phone, after mobile phone processes the information received, send control signal to Arduino module, Arduino module controls the start and stop of air-conditioning and humidifier by Infrared Transmission control module.

2. the intelligent temperature and humidity control system based on mobile phone according to claim 1, is characterized in that, described Infrared Transmission control module adopts infrared remote control switch.

3. the intelligent temperature and humidity control system based on mobile phone according to claim 1, is characterized in that, adopts pmv value as hot comfort Testing index when described mobile phone processes the information received.