CN2718440Y - Room temperature controller for central air conditioning system - Google Patents
Room temperature controller for central air conditioning system Download PDFInfo
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- CN2718440Y CN2718440Y CN 200420073216 CN200420073216U CN2718440Y CN 2718440 Y CN2718440 Y CN 2718440Y CN 200420073216 CN200420073216 CN 200420073216 CN 200420073216 U CN200420073216 U CN 200420073216U CN 2718440 Y CN2718440 Y CN 2718440Y
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Abstract
The utility model discloses a room temperature controller for a central air conditioning system comprising a main control circuit, a power circuit, a key input circuit, a cold/hot air blow control interface circuit and a temperature display indicator circuit. The main control circuit is composed of a micro computer chip, a memory and peripheral elements. The main control circuit and the cold/hot air blow control interface circuit respectively use 5V and 9V electric voltage which are outputted by the power circuit. The output of the key input circuit is connected with the main control circuit. The output of the main control circuit is respectively connected with the cold/hot air blow control interface circuit and the temperature display indicator circuit. The input terminal of the main control circuit is also connected with a human body detection circuit which uses a pyroelectric infrared sensor as a detecting element and a light ray temperature detecting circuit which uses a photoresistor and a critesister as a detecting element. Through the above design, the room temperature controller for a central air conditioning system can control the room temperature under the branch of the central air conditioning system with intelligentification, humanization and digitization. The effect of energy saving is obvious.
Description
Technical field
The utility model relates to the terminal control device of central air conditioner system.
Background technology
Along with socioeconomic continuous development, the disparities between supply and demand of electric power go out prominent day by day, make enterprise pay attention to more reducing cost with this competitive pressure of increasingly sharpening simultaneously, and along with quickening of urbanization process, the use of central air conditioner has a large capacity and a wide range, and therefore, the energy-saving significance of central air conditioner is great.For a long time, owing to can control the start and stop and the indoor temperature of each regional air conditioner unit flexibly, and can save space and construction costs, it is that to hire out with the room with guest room and business office be half first-selected central air-conditioning system patterns of building such as the hotel of main business and office building that fan coil (FCU) adds fresh air conditioner system always, and room temperature controller is control end equipment-fan coil system cooling/heat, realizes that branchs room temperature is controlled and the key of energy-saving run.Yet, existing fan coil system air-conditioning temperature controller can only carry out simple temperature control, and do not close fan coil control, indoor temperature is fixed as to cross low or too high, people and do not add in the temperature of sleep during with work and give differentiation etc. and cause huge energy dissipation to be ignored by people therefrom indoor for unmanned, in view of this, designed energy-conservation central air conditioner system room thermostat.
The utility model content
The purpose of this utility model is the room thermostat that proposes a kind of central air conditioner system, principal feature is to have introduced physical activity function for monitoring and indoor light measuring ability, therefore can under the analysis and judgement of chip, carry out temperature control according to the people in indoor active situation, the light and shade of indoor light.
The technical solution of the utility model is: a kind of room thermostat of central air conditioner system, include governor circuit, power circuit, button inputting circuits, cold/warm and air-supply control interface circuit, temperature shows and indicating circuit, wherein governor circuit is by microcomputer chip, memory and peripheral cell thereof are formed, the 5V of power circuit output and 9V voltage are respectively for governor circuit and cold/warm and air-supply control interface circuit use, the output of button inputting circuits inserts governor circuit, that the output of governor circuit connects respectively is cold/warm and air-supply control interface circuit and temperature show and indicating circuit, the input end of governor circuit also be connected to pyroelectric infrared sensor do detecting element with photoresistance, thermistor is made the light and the temperature sensing circuit of detecting element.Further, the human detection circuit is formed by connecting by pyroelectric infrared sensor HWCG, four high guaily unit integrated circuit A1, A2, A3, A4 and peripheral resistance R 11-R23, capacitor C 5-C13, diode D6, D7.Light and temperature sensing circuit are formed by connecting by photoresistance LM, thermistor TM, comparison resistance Rx, protective resistance Rpf, discharge resistance Rec and discharge off capacitor C x.
Light and temperature sensing circuit are used for light power and the indoor temperature in the measuring chamber, make the light detecting element with photoresistance LM, TM makes detector unit with thermistor, when indoor temperature is higher than design temperature to certain value, the room thermostat control of will freezing, and when making indoor temperature be equal to or less than design temperature, finish process of refrigerastion; When indoor temperature is lower than design temperature to certain value, room thermostat will be made warm control, and finish the warm process of system when making indoor temperature be equal to or higher than design temperature, and also selecting suitable wind speed automatically according to the size of the temperature difference simultaneously is indoor air-supply.But, will stop indoor air-conditioning operation automatically at night for the temperature controller that is used in office building, public place; And for the temperature controller that is used in hotel, hotel, the temperature control of will under the situation that the people has fallen asleep, sleeping at night.
The human detection circuit is used for human body in indoor active situation, make the human detection element with pyroelectric infrared sensor HWCG, the infrared ray that the external radiation of people's physical efficiency is faint, pyroelectric infrared sensor converts this faint infrared ray to faint electric signal, this electric signal carries out signal through amplifier A1, A2 two-stage and amplifies, and deliver to the window comparator that constitutes by amplifier A3, A4 and carry out level translation, unmanned when indoor activity, window comparator output high level; And when having the people movable, then export the level of high and low variation, governor circuit detects after this variation level to temperature control and makes control corresponding and judge.
Temperature shows and the number of indicating circuit is used to show indoor temperature or setup parameter, and pilot lamp is used for indicating operating status.Button inputting circuits then is for the working condition of setting temperature controller parameter or selection temperature controller such as wind speed selection or open and close machine etc., shows and indicating circuit formation interactive interface with temperature.
Cold/warm air-supply control interface circuit that reaches is the bridge that the governor circuit realization is regulated indoor temperature, governor circuit is by cold/warm Push And Release that reaches the dynamoelectric water valve (two-way valve or T-valve) of air-supply control interface circuit control hot and cold water circulation line, promptly with the mode of cutting off and open water circulation in the coil pipe, regulate wind pushing temperature (cooling/heat), thereby make indoor temperature be controlled at setting value up and down within certain fluctuation range.
Governor circuit is the core of temperature controller, and it is by microcomputer chip PIC16C57, E
2PROM memory and other peripheral cell are formed, various parameters are stored in the memory, microcomputer chip is handled the various input signals that come from button inputting circuits, human detection circuit, light and temperature sensing circuit, each input signal is being carried out on the basis of logic analysis and fuzzy operation, control corresponding and output are being made in temperature demonstration and indicating circuit, cold/warm air-supply control interface circuit that reaches.
The utility model has the advantages that: fan coil control is closed in the hotel daytime automatically under the indoor unmanned situation, night passenger's laggard temperature control of going into to sleep of sleeping; Office building or public place indoor unmanned situation on daytime are closed fan coil control automatically, and shut down night automatically, embodies energy-conservation thus and hommization.
Description of drawings
Fig. 1 is an external form synoptic diagram of the present utility model;
Fig. 2 is a circuit block diagram of the present utility model;
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
Referring to Fig. 1-Fig. 3, present embodiment by: governor circuit, human detection circuit, light and temperature sensing circuit, button inputting circuits, temperature demonstration and indicating circuit, cold/warm and air-supply control interface circuit and power circuit are formed, and make a concrete analysis of below in conjunction with Fig. 3.
The alternating current 220V civil power carries out the DC voltage of rectification, filtering acquisition pact+9V after power isolation transformer BT transformation, this direct current divides two-way: leads up to and obtains+the 5V working power behind the three-terminal voltage-stabilizing, and that another road general+9V directly is sent to is cold/and warm and air-supply control interface provides coil working voltage for the relay in this interface.
Governor circuit is by microcomputer chip PIC16C57, E
2PROM memory and other peripheral cell are formed, in the memory of governor circuit, parameters such as control temperature, sleep pressure temperature, the highest minimum temperature control restriction, unmanned shutdown time-delay have been preestablished, these parameters can be made amendment by button inputting circuits, button inputting circuits by+5V, often open soft-touch type button AN1～AN4, resistance R 42, R43, R44 and diode D8, D9 and form; The RB5 of microcomputer chip PIC16C57 in the governor circuit, RB6, RB7 is defined as input end.Because of each button input service principle is identical, at this, be that example is illustrated with button AN1, when button AN1 did not press, the input end RB5 of microcomputer chip linked to each other with working power ground by resistance R 42, is input as low level this moment; After button AN1 pressed ,+5V power supply promptly was added on the resistance R 42, so the voltage on the input end RB5 of microcomputer chip is+5V, promptly was input as high level, that is to say, the variation that input end RB5 goes up high and low level has reflected the switching of button.
Temperature show and indicating circuit by sealing in and going out integrated IC (74HC164), the digital display circuit of the dynamic eight sections LED of dibit, triode T6, T7, light emitting diode DF1～DF7, resistance R 6～R10, R30～R41 composition; The base stage of triode T6 links to each other with the output terminal RB1 of microcomputer chip by resistance R 40, the base stage of triode T7 links to each other with the output terminal RB0 of microcomputer chip PIC 16C57 by resistance R 41, microcomputer chip is by replacing triode T6, the T7 break-make is controlled the scanning that realizes the dibit number and is shown, seal in and go out integrated circuit 74HC164 and link to each other with the output terminal RC7 of computer chip by resistance R 30, resistance R 31 links to each other with the output terminal RC5 of computer chip, 8 bit data that will show are just realized with two output ports, in order to save output port, the radix point section of eight sections charactrons does not show, replace two external light emitting diode DF6, DF7 is used for the display operation state.That light emitting diode DF1～DF5 indicates respectively is cold/warm duty and wind speed state, link to each other with the output port RC0～RC4 of microcomputer chip by current-limiting resistance R6～R10 separately, with light emitting diode DF1 is example, when the output terminal RC0 of microcomputer chip output high level, one the tunnel lights DF1 after resistance R 6 current limlitings, cold/warm and air-supply control interface pilot relay ZJ1 adhesive that another road is delivered to; When the output terminal RC0 of microcomputer chip output low level, the DF1 pilot lamp goes out and cold/warm and air-supply control interface circuit pilot relay ZJ1 release.
Room thermostat is realized the indoor temperature adjusting by the dynamoelectric water valve of control hot and cold water circulation line and the Push And Release of air supply motor, cold/warm air-supply control interface that reaches designs the control of dynamoelectric water valve and air supply motor for realizing, cold/warm air-supply control interface circuit that reaches has five control outputs to be respectively: refrigeration, system is warm, high wind speed, middle wind speed, low wind speed, inner actual the merging by five identical control circuits of control interface forms, power circuit sends+and the 9V direct current provides coil working voltage for cold/relay warm and the air-supply control interface, relay ZJ1～ZJ5, triode T1～T5, diode D1～D5, resistance R 1～R5 constitutes interface control circuit, resistance R 1～R5 links to each other with the output terminal RC0～RC4 of microcomputer chip respectively, the example that is controlled to be with relay ZJ1 illustrates control procedure, when the high level of the output terminal RC0 of microcomputer chip output, for providing enough base currents, triode T1 makes triode T1 saturation conduction by resistance R 1, then the coil of relay ZJ1 obtains the 9V operating voltage, the normally opened contact closure, the 220V alternating voltage makes dynamoelectric water valve get electronic work via this contact; When the low level of the output terminal RC0 of microcomputer chip output, because of base voltage is very low triode T1 is ended, thereby make relay lose coil voltage and discharge, the contact disconnects thereupon, dynamoelectric water valve dead electricity and turn off water circulation pipe, the remaining circuit principle of work is identical, repeats no more here.
Light and temperature sensing circuit are by photoresistance LM; thermistor TM; comparison resistance Rx; protective resistance Rpf; discharge resistance Rec and charge and discharge capacitance Cx form; the resistance of thermistor TM changes with the variation of indoor temperature; the resistance of photoresistance LM then changes with the variation of indoor light power; indoor temperature and light intensity have also just been measured if can measure these two resistances; for this reason; photoresistance LM links to each other with the input/output end port RB4 of microcomputer chip; thermistor TM links to each other with the input/output end port RB3 of microcomputer chip; comparison resistance Rx links to each other with the input/output end port RB2 of microcomputer chip; discharge resistance Rce links to each other with the input/output end port RA2 of microcomputer chip; common and capacitor C x forms the charging and discharging circuit of electric capacity; and the counting end RTCC pin of microcomputer chip PIC16C57 is connected with capacitor C x by protective resistance Rpf; if the port RB2 of microcomputer chip charges to capacitor C x by comparison resistance Rx earlier; voltage behind the elapsed time Tx on the capacitor C x reaches the count threshold of microcomputer chip counting end RTCC; microcomputer chip control port RB3 charges to capacitor C x by photoresistance LM; the time that makes voltage on the capacitor C x reach the count threshold of microcomputer chip counting end RTCC is Tlm; the resistance Rlm=Rx*Tlm/Tx of photoresistance then; the measuring principle of temperature is with the measurement of luminosity; temperature and luminosity that the microcomputer chip foundation records, and under the output situation of comprehensive human detection circuit, carry out control corresponding to reach desirable temperature control and energy-saving effect.
The human detection circuit is used to monitor that human body is in indoor active situation, this circuit is by pyroelectric infrared sensor HWCG, four high guaily unit integrated circuit LM324 (A1, A2, A3, A4), and resistance R 11～R23, capacitor C 5～C13 and diode D6, D7 form, amplifier A1 wherein, A2 and related resistors, electric capacity are formed signal amplification circuit, resistance R 19, R20, R21, R22 and amplifier A3, A4 forms window comparator circuit, and the AND circuit that is made of resistance R 23, diode D6, D7 outputs to the input end RA3 of microcomputer chip.Human body externally gives off faint infra-red heat, pyroelectric infrared sensor HWCG is the infrared light Sensitive Apparatus, and convert infrared signal to electric signal, before pyroelectric infrared sensor, install a slice Fresnel Lenses additional, the infrared ray of human body radiation will constantly be focused on, defocus, thereby the electric signal that pyroelectric infrared sensor output one is changed, this feeble signal is by amplifier (1/2LM324) A1, the A2 two-stage is delivered to by amplifier (1/2LM324) A3 after amplifying, the window comparator circuit that A4 forms is carried out level translation, under stable state, its in-phase input end is followed in the output of amplifier A2, promptly equal the reference voltage Ub of window comparator circuit, so amplifier A3 of window comparator circuit, A4 spares the output high level, outputs to the port RA3 of microcomputer chip PIC16C57 after shifting with gate level; Under the situation that people's activity is arranged, the output of amplifier A2 will be fluctuateed up and down, when output voltage is higher than reference voltage Ua, and amplifier A3 output low level; When output voltage is lower than reference voltage Uc, amplifier A4 output low level, the output strangulation that all will make Uo this shows in low level, the output of human detection circuit, i.e. the high and low variation of the microcomputer chip input port RA3 level of governor circuit has reflected the active situation of human body.Daytime, it is less and change in the regular hour section when human detection circuit output level that the microcomputer chip of governor circuit detects the light resistance resistance, the indoor people's of having activity is described, the microcomputer chip of governor circuit will be a target with " the controlling temperature " that is stored in the governor circuit, room temperature be regulated with realization by cold/dynamoelectric water valve and air supply motor warm and air-supply control interface circuit control fan coil; If human detection circuit output level remains unchanged in the regular hour section, it is indoor unmanned movable to illustrate, governor circuit will be closed cold/warm control that reaches the air-supply control interface.Night, it is bigger that the microcomputer chip of governor circuit detects the light resistance resistance, if be used in the bedroom, hotel, the output level of human detection circuit promptly is to be considered to human body to enter one of Rule of judgment of sleep from the unconverted process that changes, and whether enters the sleep temperature control by the microcomputer chip analysis; If be used in office building, the output level of human detection circuit is no change in the regular hour section, and governor circuit will be closed cold/warm control that reaches the air-supply control interface circuit, stop indoor temperature being controlled.
Governor circuit is by microcomputer chip PIC16C57, E
2PROM memory and other peripheral cell are formed, the parameter that microcomputer chip comprehensively comes from the signal of button inputting circuits, human detection circuit, light and temperature sensing circuit and is stored in E2PROM is carried out logic analysis and fuzzy operation, realizes intellectuality, digitizing, hommization, energy-conservation to room temperature control.
Claims (3)
1, a kind of room thermostat of central air conditioner system, include governor circuit, power circuit, button inputting circuits, cold/warm and air-supply control interface circuit, temperature shows and indicating circuit, wherein governor circuit is by microcomputer chip, memory and peripheral cell thereof are formed, the 5V of power circuit output and 9V voltage are respectively for governor circuit and cold/warm and air-supply control interface circuit use, the output of button inputting circuits inserts governor circuit, that the output of governor circuit connects respectively is cold/and warm and air-supply control interface circuit and temperature show and indicating circuit, it is characterized in that: and the input end of governor circuit also is connected to pyroelectric infrared sensor and makes the human detection circuit of detecting element and with photoresistance, thermistor is made the light and the temperature sensing circuit of detecting element.
2,, it is characterized in that the human detection circuit is formed by connecting by pyroelectric infrared sensor (HWCG), four high guaily unit integrated circuit (A1, A2, A3, A4) and peripheral resistance (R11-R23), electric capacity (C5-C13), diode (D6, D7) according to the described controller of claim 1.
3,, it is characterized in that light and temperature sensing circuit are formed by connecting by photoresistance (LM), thermistor (TM), comparison resistance (Rx), protective resistance (Rpf), discharge resistance (Rec) and charge and discharge capacitance (Cx) according to the described controller of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420073216 CN2718440Y (en) | 2004-07-01 | 2004-07-01 | Room temperature controller for central air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420073216 CN2718440Y (en) | 2004-07-01 | 2004-07-01 | Room temperature controller for central air conditioning system |
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|---|---|
| CN2718440Y true CN2718440Y (en) | 2005-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420073216 Expired - Fee Related CN2718440Y (en) | 2004-07-01 | 2004-07-01 | Room temperature controller for central air conditioning system |
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| CN (1) | CN2718440Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374608A (en) * | 2010-08-24 | 2012-03-14 | 海尔集团公司 | Air conditioner and control method controlling on/off of air conditioner |
| CN102628609A (en) * | 2012-04-19 | 2012-08-08 | 陈宏乔 | Energy saving controller for air conditioner and work method of energy saving controller |
| CN101737924B (en) * | 2008-11-07 | 2012-12-05 | Lg电子株式会社 | Air conditioner |
| CN103673089A (en) * | 2012-09-03 | 2014-03-26 | 日立空调·家用电器株式会社 | Air-conditioning machine |
| CN104110790A (en) * | 2014-04-24 | 2014-10-22 | 河南润恒节能技术开发有限公司 | Automatic energy-saving control system with indoor fan and coiled pipe for central air conditioner with water system |
| CN104990200A (en) * | 2015-05-28 | 2015-10-21 | 青岛海尔空调电子有限公司 | Control method of air conditioner and air conditioner |
| WO2016070322A1 (en) * | 2014-11-04 | 2016-05-12 | 彭洁 | Central air conditioning switch for office building |
| CN105955346A (en) * | 2016-06-10 | 2016-09-21 | 安徽朗格暖通设备有限公司 | Temperature control circuit and air conditioner |
-
2004
- 2004-07-01 CN CN 200420073216 patent/CN2718440Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737924B (en) * | 2008-11-07 | 2012-12-05 | Lg电子株式会社 | Air conditioner |
| CN102374608A (en) * | 2010-08-24 | 2012-03-14 | 海尔集团公司 | Air conditioner and control method controlling on/off of air conditioner |
| CN102374608B (en) * | 2010-08-24 | 2015-06-10 | 海尔集团公司 | Air conditioner and control method controlling on/off of air conditioner |
| CN102628609A (en) * | 2012-04-19 | 2012-08-08 | 陈宏乔 | Energy saving controller for air conditioner and work method of energy saving controller |
| CN103673089A (en) * | 2012-09-03 | 2014-03-26 | 日立空调·家用电器株式会社 | Air-conditioning machine |
| CN103673089B (en) * | 2012-09-03 | 2016-11-23 | 江森自控日立空调技术（香港）有限公司 | Air conditioner |
| CN104110790A (en) * | 2014-04-24 | 2014-10-22 | 河南润恒节能技术开发有限公司 | Automatic energy-saving control system with indoor fan and coiled pipe for central air conditioner with water system |
| CN104110790B (en) * | 2014-04-24 | 2016-09-28 | 河南润恒节能技术开发有限公司 | Water system central air-conditioning indoor fan coil pipe energy-saving automatic control system |
| WO2016070322A1 (en) * | 2014-11-04 | 2016-05-12 | 彭洁 | Central air conditioning switch for office building |
| CN104990200A (en) * | 2015-05-28 | 2015-10-21 | 青岛海尔空调电子有限公司 | Control method of air conditioner and air conditioner |
| CN105955346A (en) * | 2016-06-10 | 2016-09-21 | 安徽朗格暖通设备有限公司 | Temperature control circuit and air conditioner |
| CN105955346B (en) * | 2016-06-10 | 2018-02-06 | 广东顺德聚名科技有限公司 | A kind of temperature-control circuit and air-conditioning |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |