CN102749945B - Control terminal and system for indoor temperature - Google Patents
Control terminal and system for indoor temperature Download PDFInfo
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- CN102749945B CN102749945B CN201210193102.0A CN201210193102A CN102749945B CN 102749945 B CN102749945 B CN 102749945B CN 201210193102 A CN201210193102 A CN 201210193102A CN 102749945 B CN102749945 B CN 102749945B
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Abstract
The invention discloses a control terminal for indoor temperature and relates to the fields of automatic control and electronics. The control terminal comprises a main control module, a temperature acquisition module, a transmission module, an air-conditioner remote control module, a time module and a power supply module, wherein the temperature acquisition module is connected with the main control module and is used for acquiring the indoor temperature in real time and transmitting the indoor temperature to the main control module; the transmission module is connected with the main control module and is used for transmitting the current indoor temperature or abnormal information exceeding the preset temperature range to a mobile terminal under the control of the main control module, receiving a temperature control instruction transmitted by the mobile terminal and transmitting the temperature control instruction to the main control module; the air-conditioner remote control module is connected with the main control module and is used for controlling the indoor temperature according to the temperature control instruction under the control of the main control module; the time module is connected with the main control module and is used for providing an accurate clock and temperature acquisition timing time for the main control module; and the power supply module is connected with the main control module and is used for supplying power to the modules. According to the control terminal disclosed by the invention, the remote mobile control for the indoor temperature is realized at low cost.
Description
Technical field
The present invention relates to and automatically control and electronic technology field, particularly a kind of indoor temperature control terminal and system.
Background technology
The great development of sensing technology, electronic technology and the communication technology, changes work and the exchange way of people, but in daily life and domestic environment, is but seldom applied.Meanwhile, the appearance of various information household appliances, makes kind increasing, and disperseed the range of control of people on the contrary, this decentralised control brings inconvenience.Like this, as the family of one of society's composition elementary cell, the isolated island of information age is almost become.Along with people's growing interest domestic environment, people start to consider in domestic environment, set up an information network, various information household appliances and communication products etc. are combined, form an organic adult, and then realize managing concentratedly or Long-distance Control domestic environment, and the interchange of information can be realized, in real time for people provide the various information of current domestic environment.
At present, technically, after the centralized management of domestic environment and remote monitoring mainly receive the information from associated electrical electric equipment products with a central processing computer, send suitable information to other electric equipment productss or user terminal with set program again, thus reach the object of information transmission and control transmission.
The defect of the remote control technology of current domestic environment is mainly manifested in:
(1) high to the computing machine of family, family lan and Internet construction situation dependence, system realization scheme is complicated, and implementation cost is high, concerning most family, can not realize;
(2) without unified implementation criteria, be difficult to apply;
(3) without the low cost implementation separately for household temperature regulation and control.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is: how the realization of low cost is to the Long-distance Control of indoor temperature.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of indoor temperature control terminal, comprising:
Main control module;
Temperature collect module, connects described main control module, for Real-time Collection indoor temperature, and described indoor temperature is transferred to main control module;
Transport module, connect described main control module, for current indoor temperature or the abnormal information that exceeds preset temperature range being transferred to mobile terminal under the control of described main control module, and receive the temperature control instruction of described mobile terminal transmission, and described temperature control instruction is transferred to described main control module;
Air Conditioner Remote module, connects described main control module, for controlling indoor temperature according to described temperature control instruction under the control of described main control module;
Time module, connects described main control module, for providing precision clock and temperature acquisition timing for main control module;
Power module, connects described main control module, for being above-mentioned each module for power supply.
Wherein, described temperature collect module comprises:
Temperature signal collection module, for responding to current indoor temperature, and is converted to magnitude of voltage by temperature value;
Analog-to-digital conversion module, for converting described magnitude of voltage to digital quantity, and transfers to described main control module by described digital quantity.
Wherein, described temperature signal collection module comprises: reference resistance and some thermistors the electric resistance array be unified into, first multiway analog switch and the second multiway analog switch, one end of each resistance in the described electric resistance array of all corresponding connection of described first multiway analog switch and the second multiway analog switch multi channel selecting end separately, described first multiway analog switch also connects the constant current source output terminal of described analog-to-digital conversion module, described second multiway analog switch also connects the analog input positive terminal of described analog-to-digital conversion module, in described electric resistance array, the other end of each resistance connects the analog input negative pole end of described analog-to-digital conversion module.
Wherein, in described electric resistance array, the other end of each resistance also passes through divider resistance ground connection.
Wherein, described transport module comprises: one or more in GPRS, GSM, WIFI and 3G module.
Wherein, described main control module comprises:
Interrupt acquisition module, controls described temperature collect module collection indoor temperature for listening to when grab type interrupts;
Interrupt transfer module, controls described transport module transmission indoor temperature, the abnormal information exceeding preset temperature range or reception temperature control instruction for listening to when transport-type interrupts;
Command mappings module, for the mapping table according to the temperature control instruction stored in the temperature control instruction inquiry main control module received and air-conditioning practical operation instruction, thus convert the temperature control instruction received to air-conditioning practical operation instruction, and this practical operation instruction is sent to Air Conditioner Remote module.
Wherein, described main control module is ATmega16L single-chip microcomputer.
Present invention also offers a kind of indoor temperature control system, comprise mobile terminal and the indoor temperature control terminal described in above-mentioned any one, described mobile terminal connects described indoor temperature control terminal by described transport module, for receiving current indoor temperature or exceeding the abnormal information of preset temperature range, and send temperature control instruction.
Wherein, described mobile terminal comprises: mobile phone, panel computer or notebook computer.
(3) beneficial effect
Indoor temperature control terminal of the present invention mainly utilizes the timing detection of Implementation of Embedded System household temperature, real-time analysis, data send, remote monitoring, achieves the long-distance intelligent control of household temperature.The temperature adjustment terminal cost of the present invention's design is low, low in energy consumption, actualizing technology is simple.Utilize thought of the present invention, the remote monitoring of the environment such as house security, humidity, smog can be realized further, can be China and realize Smart Home Technical Reference is provided.
Accompanying drawing explanation
Fig. 1 is the indoor temperature control terminal structural representation of the embodiment of the present invention;
Fig. 2 is the concrete structure figure of temperature collect module in Fig. 1;
Fig. 3 is the main work flow figure of main control module in Fig. 1;
Fig. 4 is the interrupt acquisition module work process flow diagram of main control module;
Fig. 5 is the interrupt transfer module work process flow diagram of main control module.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the indoor temperature control terminal of the present embodiment comprises: power module, main control module, temperature collect module, analog-to-digital conversion module, transport module.Power module, temperature collect module, analog-to-digital conversion module are all connected main control module with transport module.
Temperature collect module Real-time Collection indoor temperature, is sent to main control module by the temperature of collection.
The temperature collect module of the present embodiment as shown in Figure 2, comprising: temperature signal collection module and analog-to-digital conversion module.Analog to digital conversion (ADC) inside modules is integrated with constant current source, rail-to-rail Input Data Buffer, PGA (programmable gain amplifier), 24 ∑-Δ A/D converter and SPI interface controllers etc.
Temperature signal collection module realizes by installing thermistor array, there is shown the electric resistance array of 36 thermistors and a measuring resistance composition, can gather at most the temperature of 36 control points.First, ADC chip provides the constant current source of a stable 200uA for electric resistance array, and this electric current is selected to flow through measuring resistance and Ge Lu thermistor, through divider resistance ground connection by master control module controls first multiway analog switch in order.Thermistor high potential one end second multiway analog switch by the sampling rule preset by master control module controls gating and the analog input positive pole AIN+ being input to ADC hold; Low potential one end is also common port, and the analog input negative pole AIN-receiving ADC holds.The buffering of this voltage signal through ADC inside and PGA differential amplification, then convert digital quantity to by 24 ∑s-Δ A/D, be input in main control module by SPI interface and carry out data processing and obtain thermistor digital quantity Nt.
Be parallel with a road reference resistance with thermistor, each collection one road thermistor, gathers the voltage at reference resistance two ends simultaneously.This reference resistance carrys out gating by the first multiway analog switch equally, and the reference voltage signal obtained sends into ADC through the second multiway analog switch, obtains reference resistance digital quantity Njz through main control module data processing.Wherein, constant current source is I, then the terminal voltage of Rt (thermistor) and Rjz (reference resistance) is respectively I × Rt, I × Rjz.
Vt＝I×Rt×A＝Nt×K
Vjz＝I×Rjz×A＝Njz×K
K is reference current digital quantity.
Main control module according to Nt and Njz, above two formulas ask ratio can obtain thermistor Rt (t=1,2 ...) and resistance, according to formula Rt=R × e
b × (1/T1-1/T2), the value of temperature T1 to be asked can be calculated.In formula, Rt is the resistance of thermistor at temperature T1 to be asked; R is the nominal resistance of thermistor under T2 normal temperature; B value is thermistor conversion coefficient, B=3950; Here T1 and T2 refers to K degree and kelvin degree, and K degree=273.15 (absolute temperature)+degree Celsius.And ask ratio to obtain the method for measured resistance because temperature collect module have employed with reference resistance, the value of whole calculation processes and constant current source has nothing to do, so be not very high to the requirement of the accuracy of constant current source, only require that it has good stability, can precision be ensured like this.
Adopt two groups of multiway analog switches to realize the acquisition of signal in Fig. 2, two groups of multiway analog switches share a set of address wire.The thermistor that first multiway analog switch gating will gather, forms a constant current source acquisition circuit; The voltage signal of thermistor is introduced ADC by the second multiway analog switch simultaneously sharing identical address with the first multiway analog switch.Input impedance due to the differential amplifier of ADC inside can be considered infinitely great, and the conducting internal resistance of the second multiway analog switch just can have ignored completely.Because acquisition circuit adopts constant current source, so the first multiway analog switch conducting internal resistance does not affect completely on thermistor both end voltage, and voltage signal is directly drawn by thermistor two ends, so just completely avoid multiway analog switch conducting internal resistance to the impact of thermistor resistance.
Transport module comprises: one or more in GPRS, GSM, WIFI and 3G module, for current indoor temperature or temperature anomaly information (exceeding the temperature of default normal temperature range) being transferred to mobile terminal under the control of main control module, and the temperature control instruction that the mobile terminal received sends is transferred to main control module.Mobile terminal comprises mobile phone, pad etc.Household temperature acquisition data can be sent on the mobile phone of long-distance user in the mode of short message by the network such as GPRS or 3G of movement or CHINAUNICOM when transmitting, after long-distance user receives household temperature information, this note can be replied control, as: open air-conditioning equipment.
Air Conditioner Remote module is primarily of forming the microprocessor chip of remote signal, crystal oscillator, amplifier transistor, infrarede emitting diode and keyboard matrix composition.Main control module receives the short-message instruction signal that long-distance user sends, and short-message instruction signal is converted to the command signal that corresponding air-conditioning is opened and temperature is arranged, send into the micro-chip processor of Air Conditioner Remote module, output to scrambler, through modulators modulate over the carrier signal, form the high-frequency pulse string including function information, amplify through transistor BG, promote infrared light-emitting diode and launch pulse-modulated signal, remote control is carried out to air-conditioning.
The indoor temperature control terminal of the present embodiment also comprises, the time module be connected with main control module, for providing precision clock and temperature acquisition timing for main control module.
Main control module adopts ATmega16L single-chip microcomputer, be mainly used in controlling modules, Fig. 3 is main control module workflow diagram, after electrification reset, first main control microprocessor in ATmega16L single-chip microcomputer carries out the initial configuration of system, determine the function of each port, open serial ports and interrupt and external interrupt, system enters dormant state.When listening to interruption, system then enters corresponding interrupt service routine.After interrupt processing completes, continue dormancy, to reduce power consumption.
Main control module comprises: interrupt acquisition module, interrupt transfer module and command mappings module.
Interrupt acquisition module is used for listening to control temperature collect module when grab type interrupts and gathers indoor temperature.Realize the collection of temperature signal mainly through timing controlled ADC chip, two MUX and electric resistance array when control temperature acquisition module collecting temperature control signal.
Interrupt transfer module, controls described transport module transmission indoor temperature, temperature anomaly information or reception temperature control instruction for listening to when transport-type interrupts.
Command mappings module inquires about the mapping table of short-message instruction signal and the air-conditioning practical operation instruction stored in main control module according to the short-message instruction signal received, thus convert the short-message instruction signal received to air-conditioning practical operation instruction, and this practical operation instruction is sent to Air Conditioner Remote module, short-message instruction signal comprises the command signals such as opening/closing air-conditioning, set temperature.
Fig. 4 is interrupt acquisition module work flow process, if the sampling time of setting arrives, system enters in sampling timing interrupt service routine, the acquisition and processing to thermistor resistance parameter is completed in sampling timing interrupt service routine, and the resistance this being gathered all passages is recorded in storer together with temporal information, and log-on message analysis and transmission program, return master routine after completing, wait for the arrival of sampling instant next time.
Fig. 5 is interrupt transfer module work flow process, first judges whether the temperature value gathered goes beyond the scope, then starts alert process flow process in this way, if not, then start normal information transmission flow.
Power module is used for for above-mentioned each module for power supply.Because monitor terminal is in indoor use, the power module of voltage regulation that therefore monitor terminal turns direct current 5V by civil power is powered.The supply voltage of the inner various chip of monitor terminal is different, there are 5V, 3.3V and 2.8V etc., therefore inner at monitor terminal, devise power management module, containing power module of voltage regulation and power-management interface, power module of voltage regulation is responsible for the supply voltage that each chip provides constant, and protection internal component is from the impact of voltage fluctuation; Main control module realizes Intelligent management of power by power-management interface.
In order to reduce system power dissipation, in the type selecting of each module main chip, we mainly consider low-power consumption and have the chip of power switch: power supply voltage stabilizing, data communication module are all the chips with power switch; Storer, AD conversion chip and the multiway analog switch quiescent dissipation when not having chip selection signal is extremely low.
In addition, in order to reduce power consumption further, for automatic acquisition equipment devises two states: duty and dormant state.Complete the collecting work of setting in working order; Under dormant state, system intercepts look-at-me and the arrival in calendar scheduling moment to be collected, is dropped to by system power dissipation minimum simultaneously.Gather timing to be produced by the look-at-me of time system, after main control module receives look-at-me, enter capture program, gather household image and temperature data, and preserve image data, after collection, system enters dormant state, under this state, close the power supply of ADC, analog switch, storer, turn off data transmission blocks simultaneously, retain its receiver module, and receive interruption signal can be produced; Turn off main control module major part functional module, only intercept external interrupt and data receiver interruption, time system normally works, and is system timing and generation timing interrupts.When gathering moment arrival Deng next time, time system provides an external interrupt signal to main control module, has no progeny in receiving, and main control module is first from waking up, and then open the power switch of all peripheral hardwares, system enters duty.
Present invention also offers a kind of indoor temperature control system, comprise mobile terminal and above-mentioned indoor temperature control terminal, mobile terminal connects indoor temperature control terminal by transport module, for receiving current indoor temperature or exceeding the abnormal information of preset temperature range, and send temperature control instruction.Wherein, described mobile terminal comprises: mobile phone, panel computer or notebook computer.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (7)
1. an indoor temperature control terminal, is characterized in that, comprising:
Main control module;
Temperature collect module, connects described main control module, for Real-time Collection indoor temperature, and described indoor temperature is transferred to main control module, described temperature collect module comprises: temperature signal collection module, for responding to current indoor temperature, and temperature value is converted to magnitude of voltage, analog-to-digital conversion module, for converting described magnitude of voltage to digital quantity, and transfers to described main control module by described digital quantity, described temperature signal collection module comprises: reference resistance and some thermistors the electric resistance array be unified into, first multiway analog switch and the second multiway analog switch, one end of each resistance in the described electric resistance array of all corresponding connection of described first multiway analog switch and the second multiway analog switch multi channel selecting end separately, described first multiway analog switch also connects the constant current source output terminal of described analog-to-digital conversion module, described second multiway analog switch also connects the analog input positive terminal of described analog-to-digital conversion module, in described electric resistance array, the other end of each resistance connects the analog input negative pole end of described analog-to-digital conversion module,
Transport module, connect described main control module, for current indoor temperature or the abnormal information that exceeds preset temperature range being transferred to mobile terminal under the control of described main control module, and receive the temperature control instruction of described mobile terminal transmission, and described temperature control instruction is transferred to described main control module;
Air Conditioner Remote module, connects described main control module, for controlling indoor temperature according to described temperature control instruction under the control of described main control module;
Time module, connects described main control module, for providing precision clock and temperature acquisition timing for main control module;
Power module, connects described main control module, for being above-mentioned each module for power supply.
2. indoor temperature control terminal as claimed in claim 1, is characterized in that, in described electric resistance array, the other end of each resistance is also by divider resistance ground connection.
3. indoor temperature control terminal as claimed in claim 1, it is characterized in that, described transport module comprises: one or more in GPRS, GSM, WIFI and 3G module.
4. the indoor temperature control terminal according to any one of claims 1 to 3, is characterized in that, described main control module comprises:
Interrupt acquisition module, controls described temperature collect module collection indoor temperature for listening to when grab type interrupts;
Interrupt transfer module, controls described transport module transmission indoor temperature, the abnormal information exceeding preset temperature range or reception temperature control instruction for listening to when transport-type interrupts;
Command mappings module, for the mapping table according to the temperature control instruction stored in the temperature control instruction inquiry main control module received and air-conditioning practical operation instruction, thus convert the temperature control instruction received to air-conditioning practical operation instruction, and this practical operation instruction is sent to Air Conditioner Remote module.
5. indoor temperature control terminal as claimed in claim 4, it is characterized in that, described main control module is ATmega16L single-chip microcomputer.
6. an indoor temperature control system, it is characterized in that, comprise mobile terminal and the indoor temperature control terminal according to any one of the claims 1 ~ 5, described mobile terminal connects described indoor temperature control terminal by described transport module, for receiving current indoor temperature or exceeding the abnormal information of preset temperature range, and send temperature control instruction.
7. indoor temperature control system as claimed in claim 6, it is characterized in that, described mobile terminal comprises: mobile phone, panel computer or notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210193102.0A CN102749945B (en) | 2012-06-12 | 2012-06-12 | Control terminal and system for indoor temperature |
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| CN201210193102.0A CN102749945B (en) | 2012-06-12 | 2012-06-12 | Control terminal and system for indoor temperature |
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| CN102749945A CN102749945A (en) | 2012-10-24 |
| CN102749945B true CN102749945B (en) | 2015-03-11 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104281108A (en) * | 2013-07-05 | 2015-01-14 | 艾美特电器（深圳）有限公司 | Intelligent household appliance control system |
| EP3033240A1 (en) * | 2013-08-18 | 2016-06-22 | Sensibo Ltd. | Method and apparatus for controlling an hvac system |
| US10533762B2 (en) | 2013-08-18 | 2020-01-14 | Sensibo Ltd. | Method and apparatus for controlling an HVAC system |
| CN105066347B (en) * | 2015-07-31 | 2018-03-30 | 广东美的制冷设备有限公司 | Information-pushing method and device based on air conditioner |
| CN107317687B (en) * | 2017-06-21 | 2021-03-09 | 西安万像电子科技有限公司 | Remote control method, equipment and system |
| CN109631239A (en) * | 2018-12-24 | 2019-04-16 | 奥克斯空调股份有限公司 | A kind of air conditioning control method and system |
| CN112306120B (en) * | 2020-10-20 | 2022-01-04 | 武汉智能装备工业技术研究院有限公司 | Temperature control system |
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| CN102426066A (en) * | 2011-09-26 | 2012-04-25 | 天津成科自动化工程技术有限公司 | Switching detection circuit using multi-channel PT100 thermistors as temperature sensor |
| CN102450220A (en) * | 2010-10-26 | 2012-05-16 | 胡立好 | Automatic temperature controller for chicken farm |
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| US20100241275A1 (en) * | 2009-03-20 | 2010-09-23 | Johnson Controls Technology Company | Devices, systems, and methods for communicating with rooftop air handling units and other hvac components |
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| CN202067169U (en) * | 2011-05-23 | 2011-12-07 | 杭州路格科技有限公司 | Humiture remote monitor based on Internet of Things |
| CN102426066A (en) * | 2011-09-26 | 2012-04-25 | 天津成科自动化工程技术有限公司 | Switching detection circuit using multi-channel PT100 thermistors as temperature sensor |
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