CN202040940U - Split type network intelligent temperature controller of central air conditioner - Google Patents
Split type network intelligent temperature controller of central air conditioner Download PDFInfo
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- CN202040940U CN202040940U CN2011201424084U CN201120142408U CN202040940U CN 202040940 U CN202040940 U CN 202040940U CN 2011201424084 U CN2011201424084 U CN 2011201424084U CN 201120142408 U CN201120142408 U CN 201120142408U CN 202040940 U CN202040940 U CN 202040940U
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Abstract
The utility model discloses a split type network intelligent temperature controller of a central air conditioner, which comprises a control board and a power supply board, wherein the control board is connected with the power supply board; a temperature measuring module, a liquid crystal display module and a parameter setting module are arranged in the control board; and the power supply board comprises a power supply module, a relay control module and an RS485 (recommended standard 485) interface circuit, and the power supply module is used for providing power supply for the relay control module and the control board. The split type network intelligent temperature controller adopts a single MCU (micro-controller unit) structure, a front board and a rear board adopt a split type design and a single MCU is adopted, thus overcoming the disadvantage that the traditional temperature controller is difficult to be connected into the central air conditioner through a wiring pipe for centralized (remote) monitoring, reducing the dependence on civil engineering, upgrading the safety in use, enhancing the general applicability of junction boxes in any standards and developing the expansibility of a large connected network of a system.
Description
Technical field
The utility model relates to the split type network intelligence temperature controller of a kind of central air-conditioning.
Background technology
The terminal temperature controller of central air-conditioning is the adjusting executing agency of whole building air-conditioner system room environment temperature, generally is divided into control wind, control water or not only controls wind but also control water.No matter adopt which kind of control model, its final purpose is will be with the room environment temperature constant at design temperature, to reach comfortable and energy-conservation effect.Controller architecture generally is made up of temperature sensor, LCD display, parameter setting button, relay etc., is the field controller of an integral body.
Demand along with information fusion and energy-saving and emission-reduction, temperature controller manufacturer begins to pay close attention to the network control technology of controller, the communication network that adopts mainly contains RS485, CAN, Ethernet etc., wherein the bottom communication is based on lower-cost RS485, make temperature controller present certain intelligent network, thereby be easy to be integrated in the central air-conditioning centralized monitoring system, realize the Internet of Things of air-conditioning.
Currently marketed main flow temperature controller is mainly the integral type design, promptly realizes wind speed control and the switch control of water valve and the network communication of high-end applications etc. of temperature detection, fan coil with an integral part.Its temperature controller structure generally can be divided into two parts as shown in Figure 1 on structure: header board and back plate, and header board mainly comprises LCD display, button and governor circuit etc.; Back plate comprises analog power, relay, binding post etc.Two parts are realized connecting in the temperature controller plastic housing by the multicore winding displacement, as can be seen from Figure 1, the structure of above type temperature controller is a monolithic devices, forward and backward plate is connected the inner also final integral of back embedding mould of plastics by inner winding displacement be placed in the standard terminal box of body of wall.The control of fan coil wind speed and water valve need be connected to the wiring of correspondence on the binding post of back plate by the spool threading in the body of wall.
If when engineering project is just built, while cloth AC power supplies, control line and 2 spools of order wire, select above-mentioned integrally-built temperature controller to give no cause for much criticism, but during to the transformation networking project of the three speed switch of original installation or simple and easy temperature controller, because there is not communication spool (being used for big systems connection), the Party A does not allow to transform civil engineering again---and stringing again, problem has just occurred.Traditional integral type temperature controller wiring is on the binding post of plate behind the temperature controller, wire casing generally is one a 4 ' Kbg spool in original body of wall, wants to realize that network control has two problems to realize: 1) 5～6 AC power supplies, the control lines shielding line of communicating by letter with 2 can't pass 4 ' Kbg spool simultaneously; 2) if reduce design standard, use fine line diameter, consider it is unallowed from communication quality and security of system angle, list is considered from the security of system angle, in case order wire has broken skin and AC line overlap joint, whole central air-conditioning long distance control system will all be paralysed, and consequence is hardly imaginable.Heavy-current control of integral type temperature controller and power supply (AC220V) all concentrate on temperature controller inside in addition, also easily cause certain potential safety hazard.
Except that above structure, terminal temperature controllers such as large-scale household air conditioning of part such as U.S. York, McQuay, Trane and domestic Haier, Hisense also adopt split-type design to a certain extent, but its structure is to adopt two cover MCU control systems, be that forward and backward plate respectively has a MCU to communicate contact and control, communication protocol generally adopts I
2Serial mode such as C, SPI, the spool wiring is generally 4 (VCC, GND, connection A/B, header board does not have independent power supply) or 2 (connection A/B, header board have independent power supply).Back plate (execution driving mechanism) is by mode and central air conditioner main machine contacts such as RS485 or CAN buses; Above-described split-type design has following feature:
1) header board and back plate line≤4 respectively contain a slice MCU, can work alone separately;
2) header board and back plate pass through I
2Simple and easy serial mode such as C, SPI is finished overall work.
But 2 weak points are arranged during above household air conditioning networking:
1) central air conditioner main machine can only be communicated by letter with back plate (execution driving mechanism), can not make many central air conditioner main machines of whole building and all big networkings of fan coil and terminal temperature controller formation;
2) this temperature controller adopts two MCU, nominally for split designs, but cost is higher, is difficult for promoting.
Therefore, it is split type temperature controller system that above-mentioned split type temperature controller defines more accurately, is not being divided into two of single MCU traditional integral temperature controller, and can not constitutes the big networking of whole building.
By patent retrieval, find the temperature controller (patent No.: CN200920171726.6) of the split type thought design of the not extensive employing of using on the another kind of market.In this patent specification, this product is divided into panel, drive plate two parts with traditional integral type temperature controller, panel comprises liquid crystal display, base plate, button, and drive plate comprises transformer, relay, binding post etc., and two parts connect by the connecting line that has plug.This specification emphasizes that two alignment header boards that drive plate passes through " not polarity " provide work low pressure, transmit the control signal of panel to drive plate simultaneously simultaneously.Just functionally set forth the portion of external physical arrangement in the specification, and by analyzing as can be known: 1) if this patent is realized not polarity, then need intended polarity to detect automatically and reverse circuit; 2) if need to realize the control signal transmission, then being divided into following two kinds of situations again: if adopt wired: control signal must be modulated, on two power lines that are added to then, and in drive plate survey carrying out demodulation, the processing of control signal; If adopt wireless: can adopt easy radio remote control circuit etc., but wireless signal wants through walls etc., effect is affected.So the simplification in the wiring must cause the complexity on original processing of circuit.By its patent specification, can't find out the realization that it is concrete, the design there is not reference value.Simultaneously, by the introduction in the patent specification, learn that it does not contain the network communication function, can not realize the big networking of central air-conditioning, and cost is higher, practical value is limited.
The utility model content
In order to solve traditional temperature controller in new construction and old deficiency aspect engineered, the utility model provides a kind of central air-conditioning split type network intelligence temperature controller.
For achieving the above object, the utility model following scheme of sampling:
The split type network intelligence temperature controller of a kind of central air-conditioning, it comprises control panel and power panel, described control panel separates with power panel; Described control panel comprises microcontroller, microcontroller respectively with temperature-measuring module, display module and parameter are set panel and are connected, and described microcontroller also is connected with relay control module on the power panel, and the power module on the power panel is that relay control module and control panel are powered.
Described control panel is placed in any standard terminal box of body of wall, and major function comprises temperature survey, parameter setting, liquid crystal display and combined network communication etc.
Described power panel is placed near the furred ceiling fan coil, for control panel provides operating voltage, and the instruction of sending according to control panel, drives air flow relay and or the switching of water valve.
Be equipped with the RJ45 standard socket on described control panel and the power panel, two RJ45 standard sockets connect by netting twine.
Also be provided with the RS485 communication module on the described power panel.
The utility model has adopted single MCU split-type design method to central air-conditioning network intelligence temperature controller, adopt forceful electric power, light current isolation technics in the design, make forceful electric power exist only in back plate (execution driving mechanism), the part of user's contact has only the safe low pressure (DC 5V) of front panel, thereby has promoted security greatly.Order wire and DC 5V light current coexist in the netting twine (general adopt surpass the non-shield type of five classes) of an about 5.5mm of diameter, the smooth phenomenon of the communication that because of forceful electric power the light current electromagnetic interference has been caused when thoroughly having stopped traditional wiring has promoted the stability and the reliability of system.If be applied to new construction, the netting twine of 5.5mm also can be optimized space, saves the extra expenses of 2 pipe wirings.Simultaneously, the design's method only adopts a control chip (MCU), has realized the seamless link of forward and backward plate and split type central air-conditioning network intelligence temperature controller truly.The expansion the RS485 interface strengthened network savvy, make temperature controller and whole system the operation stability, reliability and communication performance be optimized, and cost near minimum, the design more scientific and reasonable.
Beneficial effect: the utility model adopts header board, back plate list MCU network-type split-type design, has solved next root installation pipe of conventional situation and has been difficult for temperature controller is incorporated the civil engineering dependence that central air-conditioning is concentrated the disadvantage of (long-range) monitoring system, reduced temperature controller; The network intelligence temperature controller that adopts the split mode to design can utilize existing civil engineering structure to greatest extent, has avoided large-scale engineered; By a netting twine and standardized RJ45 interface, traditional temperature controller is divided into two, realize that strong, weak electricity separates, avoided electromagnetic interference problem that may be potential in the communication; Because adopt the split type strong, weak electricity that makes to separate, user side is the DC 5V voltage of safety, guarantees safe in utilization.Be used for the integrated RS485 interface of network and be directed near the back plate that is fixed in the blower fan, avoided traditional temperature controller when needing the big networking of system, order wire must be passed the difficulty that causes terminal row the terminal box from body of wall, alleviated the bearing pressure of original spool.By RS485 interface easily, RS485 hub of supporting special use (being used to expand the substation) and intermediate station (RS485 changes Ethernet) are easy to system extension to make up large-scale central air-conditioning network to thousands of points.The application of this product will thoroughly solve users to be wanted to implement the remote monitoring of central air-conditioning Ethernet for many years and carries out energy-conservationly, can not destroy the worry of body of wall again, has protected original civil engineering structure, has saved unnecessary expenditures.Adopt this split type network intelligence temperature controller, can easily constitute central air-conditioning and concentrate (long-range) monitoring system.Because native system has the new construction cost saving, original old engineering need not transformed civil engineering, remarkable, the benefit advantages such as gain quick return of energy-saving effect, therefore will produce huge economic benefit and social benefit.
Description of drawings:
Fig. 1 is that integral type temperature controller header board passes through winding displacement connection diagram in mould with the back plate;
Fig. 2 is that split type temperature controller header board of the present utility model is by netting twine and remote back plate connection diagram;
Fig. 3 is split type temperature controller theory diagram;
Fig. 4 is the forward and backward plate connecting line of the utility model preface figure;
Fig. 5 is a header board circuit diagram of the present utility model;
Fig. 6 is a back of the present utility model plate circuit diagram;
Fig. 7 is the utility model temperature detecting module theory diagram.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
The split type network intelligence temperature controller of a kind of central air-conditioning, as shown in Figure 3, it comprises control panel and power panel, described control panel separates with power panel; Described control panel comprises microcontroller, microcontroller respectively with temperature-measuring module, display module and parameter are set panel and are connected, and described microcontroller also is connected with relay control module on the power panel, and the power module on the power panel is that relay control module and control panel are powered.
Described control panel is placed in any standard terminal box of body of wall, and major function comprises temperature survey, parameter setting, liquid crystal display and combined network communication etc.
Described power panel is placed near the furred ceiling fan coil, for control panel provides operating voltage, and the instruction of sending according to control panel, drives air flow relay and or the switching of water valve.
Be equipped with the RJ45 standard socket on described control panel and the power panel, two RJ45 standard sockets connect by netting twine.
Also be provided with the RS485 communication module on the described power panel.
Be illustrated in figure 2 as header board of the present utility model (left side) by netting twine and remote back plate (right side) connection diagram, connect by an adjustable length netting twine.At forward and backward plate the RJ45 socket of standard is arranged, the length of netting twine depends on the engineering actual conditions, and general length is 2～5 meters.Netting twine line preface is set concrete line preface such as Fig. 4 by forward and backward plate terminal function correspondence and signal transmission least interference two principle.
Header board RJ45 interface line preface is: GND, VCC, H, M, L, Valve, 485B, 485A, and function is as follows separately:
1) GND: the back plate is to power supply ground that header board provides;
2) VCC: the DC 5V power supply that the back plate provides to header board;
3) H: header board plate backward provides high-speed control signal;
4) M: header board plate backward provides the middling speed control signal;
5) L: header board plate backward provides the low speed control signal;
6) Valve: header board plate backward provides the water valve control signal;
7) 485B: header board plate backward provides RS485 communication B end signal;
8) 485A: header board plate backward provides RS485 communication A end signal;
Back plate RJ45 interface line preface is: GND, VCC, H, M, L, Valve, 485B, 485A, and function is as follows separately:
1) GND: provide power supply ground to header board;
2) VCC: provide DC 5V power supply to header board;
3) H: header board plate backward provides high-speed control signal;
4) M: header board plate backward provides the middling speed control signal;
5) L: header board plate backward provides the low speed control signal;
6) Valve: header board plate backward provides the water valve control signal;
7) 485B: header board plate backward provides RS485 communication B end signal;
8) 485A: header board plate backward provides RS485 communication A end signal;
High, medium and low three wind speed of header board and water valve control signal are transferred to the back plate by the RJ45 interface of forward and backward plate by netting twine, drive back plate relay-operated controller circuit, by a netting twine and corresponding interface, just realize the split-type design of temperature controller, made the engineering wiring become conveniently and the inconvenience that occurs in engineered.Because connected mode adopts netting twine commonly used,, just can conveniently realize the replacement of connecting line, the change of lengthening as long as adopt the line preface of the design's regulation.
Split type temperature controller schematic diagram as shown in Figure 3, header board (being control panel) main control chip major function comprises temperature survey, parameter setting, liquid crystal display, RS485 communication etc.; Back plate (being power panel) is for system provides operating voltage, and the control level that provides according to front panel drives the switching of air flow relay and water valve simultaneously.
The circuit theory of header board wherein mainly comprises as shown in Figure 5:
A) button identification: A1-A6 realizes switching on and shutting down, temperature, pattern, mailing address and baud rate setting etc.;
B) liquid crystal drive shows: adopt the special-purpose segmentation liquid crystal of central air-conditioning, show user mode in real time;
C) temperature detection: by the method for resistance, capacitor charge and discharge, be 1% thermistor by precision, certainty of measurement is not higher than ± and 1 ℃;
D) network communication: adopt RS485 as the bottom communication network, chip adopts MAX485;
E) extend out excuse: adopt the RJ45 standard socket, be connected with rear board, realize relay switch control by netting twine.
The circuit theory diagrams of back plate are as shown in Figure 6: wherein mainly comprise:
A) power supply conversion: adopt analog power, civil power is converted to two kinds of dc voltages of 12V, 5V, plate relay, header board logic control provide working power after being respectively;
B) relay control: by control relay, realize the high, medium and low switching of wind speed, other keep one the tunnel often contain open, the relay (K4) of normally closed point, for expansion air-valve (or water valve) use;
C) extend out interface: adopt the RJ45 standard socket, be connected with header board, realize connected network communication, relay switch control by netting twine.
General temperature detection, or adopt digital scheme such as 18B20 or adopt the A/D of modeling scheme such as thermistor to sample.When product design,, selected a main control chip: STC10F08XE with the A/D excuse in order to take all factors into consideration cost.The STC10 series monolithic is the single-chip microcomputer of the single clock/machine cycle (1T) of macrocrystalline science and technology production, be high speed, low-power consumption, jamproof 8051 single-chip microcomputers of new generation, instruction system is compatibility 8051 fully, but the fast 8-12 of speed doubly, inner integrated highly reliable reset circuit.
Thermometric realization realizes that by the charge-discharge circuit that precision resistance, thermistor, electric capacity are formed principle is implemented as follows as shown in Figure 7: P3.6, P3.7 and P3.2 are 3 I/O pin of single-chip microcomputer; RK is the precision resistance of 100K; RT is 100K, and precision is 1% thermistor; R1 is the conventional, electric-resistance of 47 Ω; CN is the Leaded Ceramic Disc Capacitor of 0.1 μ F.
Earlier P3.6, P3.7, P3.2 are made as 0, CN is discharged to.P3.6 is made as 1, T1 conversion time of record P3.2 from 0 to 1.Again P3.6, P3.7, P3.2 are made as 0, CN is discharged to.P3.7 is made as 1, T2 conversion time of record P3.2 from 0 to 1.
According to formula: T1/RK=T2/RT, get RT=T2*RK/T1.The RT temperature curve is non-linear, and temperature characteristics is provided by thermistor manufacturer, has guaranteed correctness and the continuity measured.Adopt lookup table mode, obtain final temperature value.Temperature controller finally records the error of temperature within ± 1 ℃, meets the demands.
In the practical engineering application, header board is placed in the standard terminal box of body of wall, is connected with the back plate by netting twine.The user regulates design temperature, fan speed, operational mode etc. according to self needs; For the management level user, can be by the mode of input password, the parameter that the regulating system communication is relevant is as address, baud rate, compensation temperature etc.The above-mentioned relevant parameter of domestic consumer's disable access is in case influence the central air conditioner system networking.Back plate is placed near the furred ceiling fan coil, is connected with header board by netting twine.Because the relay control section is all at the back plate, realized that forceful electric power, light current separate, blower fan three fast taps and water valve are connected the control that can finish wind speed and water valve with corresponding relay terminal, central air-conditioning network communication line is connected just with A, the B two ends of RS485 can realizes the RS485 communication, realize the networking of temperature controller easily.
Claims (5)
1. split type network intelligence temperature controller of central air-conditioning, it comprises control panel and power panel, it is characterized in that, described control panel separates with power panel; Described control panel comprises microcontroller, microcontroller respectively with temperature-measuring module, display module and parameter are set panel and are connected, and described microcontroller also is connected with relay control module on the power panel, and the power module on the power panel is that relay control module and control panel are powered.
2. the split type network intelligence temperature controller of central air-conditioning as claimed in claim 1 is characterized in that, described control panel is placed in any standard terminal box of body of wall, and major function comprises temperature survey, parameter setting, liquid crystal display and combined network communication etc.
3. the split type network intelligence temperature controller of central air-conditioning as claimed in claim 1, it is characterized in that described power panel is placed near the furred ceiling fan coil, for control panel provides operating voltage, and the instruction of sending according to control panel, drive air flow relay and or the switching of water valve.
4. the split type network intelligence temperature controller of central air-conditioning as claimed in claim 1 is characterized in that, is equipped with the RJ45 standard socket on described control panel and the power panel, and two RJ45 standard sockets connect by netting twine.
5. the split type network intelligence temperature controller of central air-conditioning as claimed in claim 1 is characterized in that, also is provided with the RS485 communication module on the described power panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201424084U CN202040940U (en) | 2011-05-06 | 2011-05-06 | Split type network intelligent temperature controller of central air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201424084U CN202040940U (en) | 2011-05-06 | 2011-05-06 | Split type network intelligent temperature controller of central air conditioner |
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| CN202040940U true CN202040940U (en) | 2011-11-16 |
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| CN2011201424084U Expired - Fee Related CN202040940U (en) | 2011-05-06 | 2011-05-06 | Split type network intelligent temperature controller of central air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162670A (en) * | 2011-05-06 | 2011-08-24 | 山东大学 | Split networked intelligent temperature controller of central air conditioner |
| CN103453625A (en) * | 2013-08-19 | 2013-12-18 | 苏州康华净化***工程有限公司 | Workshop constant temperature and humidity system and control method thereof |
| CN106871329A (en) * | 2016-12-28 | 2017-06-20 | 中瑞新源能源科技(天津)股份有限公司 | A kind of central air-conditioning energy-saving system |
| CN111256337A (en) * | 2020-03-24 | 2020-06-09 | 科通工业技术(深圳)有限公司 | Intelligent temperature controller and operation method thereof |
-
2011
- 2011-05-06 CN CN2011201424084U patent/CN202040940U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162670A (en) * | 2011-05-06 | 2011-08-24 | 山东大学 | Split networked intelligent temperature controller of central air conditioner |
| CN103453625A (en) * | 2013-08-19 | 2013-12-18 | 苏州康华净化***工程有限公司 | Workshop constant temperature and humidity system and control method thereof |
| CN106871329A (en) * | 2016-12-28 | 2017-06-20 | 中瑞新源能源科技(天津)股份有限公司 | A kind of central air-conditioning energy-saving system |
| CN111256337A (en) * | 2020-03-24 | 2020-06-09 | 科通工业技术(深圳)有限公司 | Intelligent temperature controller and operation method thereof |
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| 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: 20111116 Termination date: 20140506 |