CN201561528U - Tail end controller and billing system for central air-conditioning metering - Google Patents
Tail end controller and billing system for central air-conditioning metering Download PDFInfo
- Publication number
- CN201561528U CN201561528U CN 200920206484 CN200920206484U CN201561528U CN 201561528 U CN201561528 U CN 201561528U CN 200920206484 CN200920206484 CN 200920206484 CN 200920206484 U CN200920206484 U CN 200920206484U CN 201561528 U CN201561528 U CN 201561528U
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- central air
- terminal controller
- conditioning
- microprocessor mcu
- water valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/30—Smart metering, e.g. specially adapted for remote reading
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Abstract
The utility model relates to a tail end controller and a billing system for central air-conditioning metering, which are used for the energy metering of a fan coil of a central air-conditioning system, and comprise a singlechip MCU, a display module, a power module and a communication module. The tail end controller is installed at the tail end of the fan coil of the central air-conditioning system, is connected to the water valve state detection device of the fan coil of the central air-conditioning system through the parallel input interface of the singlechip MCU, and is used for acquiring the opening or closing state of the water valve of the fan coil; a control device is connected with the water valve of a coil through the parallel input interface of the singlechip MCU, and can realize the opening or closing control of the tail end controller to the water valve of the coil; a three-shift wind speed detection device is connected to a fan through the parallel input interface of the singlechip MCU, and is used for acquiring the wind speed of the fan; and the fan coil wind speed signal acquired by the singlechip MCU records, displays and stores the practical consumed refrigeration capacity. The utility model has simple signal monitoring, low system cost as well as convenient installation and maintenance.
Description
Technical field:
The utility model belongs to air conditioner energy metering and billing technology field, relates in particular to a kind of energy metering device of central air conditioner system fan coil end.
Background technology
The accurate metering of the cold and hot amount of air-conditioning system not only helps building energy conservation with charging rationally, and helps estate management.Fan coil is the modal terminal form of central air conditioner system.Capacity metering method to fan coil cooling unit mainly contains two kinds at present: the two warm flow rate metering methods of chronometry and water side.Chronometry is to add up the running time to fan coil, only considers the power of fan under the different wind speed, does not consider the variation of fan coil chilled-water flow and chilled water temperature, and the accuracy of measuring is low, and error is bigger, is unfavorable for the reasonable fee of air-conditioning.The two warm flow rate metering methods of water side all need a flowmeter and two thermometers for each end, by the integral and calculating cold.Though the cooling metering precision is higher, initial cost is big, installs complicated, difficult in maintenance.And the demonstration of metering device often is not intuitively to show with energy unit, influenced user's knowing the inside story to the air-conditioning power consumption.
Summary of the invention
In order to overcome the terminal message accounting of existing central air conditioner system fan coil: (1) is rates ground with the fan operation time only, the unreasonable problem of coarse charging; (2) need the gentle flow of monitoring water-in and water-out in real time, problem such as investment cost height, installation and maintenance are complicated, the utility model provides the terminal controller and the charge system that are used for the central air-conditioning metering that is installed in central air-conditioning fan coil end, can not only accurately measure and show in real time the actual cold of fan coil operation, and economical and convenient.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of terminal controller that is used for the central air-conditioning metering, described terminal controller comprises single-chip microprocessor MCU, display module, power module.Described terminal controller is installed in central air-conditioning fan coil end, and the parallel input interface by single-chip microprocessor MCU is connected to unlatching or the closed condition that central air-conditioning fan coil water valve condition checkout gear is used for the pickup coil water valve;
Parallel output interface by single-chip microprocessor MCU is connected to unlatching or the closing control of the control device realization terminal controller of coil pipe water valve to described coil pipe water valve;
The third gear wind speed checkout gear that parallel input interface by single-chip microprocessor MCU is connected to blower fan is used to gather the wind speed of blower fan;
Single-chip microprocessor MCU is gathered the fan speed signal, and according to the cold writing speed under the pre-set corresponding wind speed, the cold of actual consumption is calculated and stores the cold of user's actual consumption;
Described display module links to each other with single-chip microprocessor MCU and is used to show the cold of described user's actual consumption;
Described power module links to each other so that dc source to be provided with the power input of single-chip microprocessor MCU and display module respectively.
Described terminal controller also comprises the communication module of the communication interface that is connected to described single-chip microprocessor MCU, and realization is communicated by letter with senior management computer.
The control device of described coil pipe water valve is for being connected to first and second relays of the parallel output interface of single-chip microprocessor MCU after isolating through photoelectricity.
The invention also discloses a kind of terminal charge system of fan coil that is used for the central air-conditioning metering, comprise a plurality of terminal controllers, it is characterized in that:
Described each terminal controller is installed in corresponding central air-conditioning fan coil end, the communication module of described each terminal controller is communicated by letter with senior management computer by communication network, and the cold of user's actual consumption that each terminal controller is detected reaches senior management computer.
The beneficial effects of the utility model are:
1. only by signal monitoring,, be the device measurement unit, write down actual air-conditioning cold flow with the air-conditioning cold flow according to different writing speed under the default third gear wind speed to fan coil wind speed state.
2. the single-chip microcomputer function is expanded, increased house dog, voltage monitoring and serial EEPROM function, it is reliable more, stable that system is not only moved, and also has the characteristics of significant data energy long preservation.
3. system directly shows actual air-conditioning cold flow with digital form by LCD MODULE, is beneficial to realize transparent and reasonable fee.
System's components and parts and chip economy, maturation, be suitable for, system cost is low, installs simple, easy to maintenance.
Description of drawings
Figure 1 shows that the structured flowchart of the utility model terminal controller;
Figure 2 shows that the elementary diagram of the terminal charge system of the utility model;
Figure 3 shows that the monitoring programme block diagram of terminal controller of the present utility model;
Figure 4 shows that the circuit theory diagrams of the utility model terminal controller.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further specified.
The utility model utilization is directly installed on the terminal controller of the terminal fan coil of central air conditioner system, gathers high, medium and low three speed stage signals of fan coil blower fan.According to the inherent characteristic of fan coil wind speed and the air-conditioning water yield, air-conditioning supply backwater temperature difference, preestablish the writing speed under the corresponding third gear wind speed of terminal controller embedded software timer.When the blower fan operating condition signal of fan coil was identified as low-grade wind speed, the charging algorithm was with standard recording speed record cold; When the blower fan operating condition signal of fan coil was identified as middle-grade wind speed and high-grade wind speed, timer correction toggle speed was the certain multiple of preset in advance, and record also shows the actual air-conditioning cold flow of fan coil.
During air conditioning charging, the cold that only needs this start operation of record to consume, with last time meter reading data subtract each other, be the cold of use of this metering period, just can draw corresponding cost with the pay demand note price card standard of this unit's of multiply by cold.Thereby realize similarly measuring and charge method as ammeter, water meter.The user can oneself read consumption, and calculates every month air-conditioning expense, guarantees metering and the transparent of charging and fair.
Circuit implementing scheme of the present utility model: the terminal message accounting of central air conditioner system fan coil is a terminal controller with data acquisition, processing, storage, demonstration and communication function.This terminal controller is by the single-chip microprocessor MCU with timing, data processing, computing and memory function, display terminal, and compositions such as power module and communication module, as shown in Figure 1.MCU contains parts such as microprocessor MPU, serial/parallel capable input/output interface, program storage Flash, data storage, EEPROM, timer/counter, house dog.Do not dispose communication module as this terminal controller, then constitute simple terminal controller.Simple terminal controller can use separately, has characteristics such as suitable, economic, easy for installation.
The terminal controller monitoring programme is stored in the Flash memory, starts operation by the blower fan start signal.Controller is gathered the water valve status signal by parallel input interface, and when user's water valve cut out, monitoring programme withdrawed from; When water valve was opened, whether inquiring user paid the fees, as does not pay the fees, and controller sends by parallel output interface and cuts out the water valve order, and monitoring programme withdraws from simultaneously.Pay the fees as the user, controller is gathered high, medium and low three the speed stage status signals of fan coil blower fan, and according to the cold writing speed under the pre-set corresponding wind speed, and the cold of actual consumption is carried out record.MCU stores result of calculation, by the cold that shows that the fast explicit user of mould consumes, and communicate by letter with senior management computer, related data is reached supervisory computer by communication network, adopt database to carry out unified storage and management, be convenient to inquiry, print.Thereby form the terminal charge system of the central air conditioner system fan coil with collection, processing, control and management function.The connection principle of this end charge system as shown in Figure 2.
The terminal message accounting monitoring programme of central air conditioner system fan coil of the present utility model block diagram as shown in Figure 3.When the user opens when appointing Wind speed switch, terminal controller begins to carry out monitoring programme.Program at first the timer in the start-up control device (when the timer meter is full, the interrupt call timing program, upgrade the timer time), gather third gear Wind speed switch status signal then, is and judge: Wind speed switch changed to low or first gear? be then to read standard timer time data TL, otherwise judge whether Wind speed switch is changed to mid ranger, be then to read middling speed timer time data TM, otherwise read high-speed timer time data TH.Above-mentioned under different wind speed, time data TL, TM, the TH of the timer that is produced by different recording speed are used for the cold computing formula and accurately calculate the cold that the user consumes.Then controller is gathered the water valve state, closes as water valve, then withdraws from monitoring programme; Open as water valve, then carry out following operation: inquire about this user to host computer and whether pay dues on time, as do not pay dues, terminal controller sends closes the water valve order, as pay dues on time, then as 3 fens clock times then, carry out that cold calculates, shows, storage, and be uploaded to operation such as upper managing computer.MCU adopts the AT89S52 single-chip microcomputer of atmel corp in the present embodiment, and communication module adopts MAX487E, and LCD MODULE adopts SG12864, and power module adopts Switching Power Supply.By essential design of hardware and software, realize fan coil energy consumption measure, the function that shows and communicate by letter with supervisory computer (PC).
Fig. 4 is a circuit diagram of the present utility model, and the AT89S52 single-chip microcomputer has 48 the two-way I/O interface of standard P0, P1, P2, P3, and each of each interface all has output latch, output driver, input buffer.Byte input, output function can be carried out to each interface, also bit manipulation can be carried out.The 18th, 19 pins of AT89S52 single-chip microcomputer connect crystal oscillator, and the 40th pin connects the Vcc end of power module, and the 20th pin connects the GND end of power module.
X5045 is a kind of programmable control circuit that integrates house dog, voltage monitoring and three kinds of functions of serial EEPROM.Wherein house dog provides defencive function to system.When system breaks down and surpasses when the time is set, house dog is reacted to CPU by the RESET signal.The voltage monitoring function can protection system be avoided the influence of low-voltage.When supply voltage drops to allowed band when following, system will reset, till supply voltage turns back to stationary value.X5045 and AT89S52 single-chip microcomputer adopt the spi bus interface mode, this interface circuit has been expanded the serial EEPROM of 4kB for the AT89C52 single-chip microcomputer, even system still can keep data after power down constant, therefore be used to store each grade of blower fan wind speed timer data in the present embodiment.The minimum storage life of the EEPROM internal data of X5045 is 100 years, and is erasable more than 1,000,000 times.As shown in the figure, the X5045 chip has 8 pins, and wherein the 3rd, 8 pins connect+the 5V power supply, the 4th pin ground connection; Sheet selects input CS, serial data output SO, serial clock input SCK, serial data input SI to link to each other with 21,22,23,24 pins of AT89S52 single-chip microcomputer P2 mouth respectively; Reset output terminal RESET links to each other with the 9th pin of single-chip microcomputer.
As shown in Figure 4, R1～R3 is a current-limiting resistance, and D1～D3 is a commutation diode, and D4～D6 is the reverse protection diode.Fan coil third gear wind speed detection signal is through P1 mouth the 1st, 2,3 pins of optocoupler TLP521-1 input AT89S52 single-chip microcomputer.When arbitrary grade of connection of the high, medium and low third gear Wind speed switch of fan coil, its corresponding circuit current-limiting resistance and diode current flow, corresponding single-chip microcomputer pin is low level (0), and all the other two grades of wind speed detection pins are high level (1).Fan coil water valve control signal is drawn the 5th, 6 pins from AT89S52 single-chip microcomputer P1 mouth, realizes the open and close control of valve after photoelectricity is isolated respectively by relay J 1, J2.As shown in the figure, when the 5th pin is put when high, the optocoupler conducting, relay J 1 coil is by electric current, and the shutoff valve electric loop is connected, and water valve cuts out; When the 6th pin is put when high, the optocoupler conducting, relay J 2 coils are by electric current, and the heat water valve electric loop is connected, and water valve is opened.The water valve state detection signal is through the 4th pin of optocoupler TLP521-1 input AT89S52 single-chip microcomputer P1 mouth.
The utility model adopts LCD MODULE SG12864, SG12864 adopts direct access mode with being connected of AT89S52 single-chip microcomputer among the figure, be about to LCD MODULE and be used as memory or I/O equipment, single-chip microcomputer is operated LCD MODULE in the mode of reference to storage or I/O equipment.As shown in Figure 4,8 position datawire DB0～DB7 of display module link to each other with the 32nd～39 pin of AT89S52 single-chip microcomputer P0 mouth; Instruction/data selects line D/I, read/write to select line R/W and chip selection signal line CS1, CS2 to link to each other with the 25th, 26,27,28 pins of single-chip microcomputer P2 mouth respectively; E is the enable signal line, with linking to each other with non-output of single- chip microcomputer 16,17 leg signal.
MAX487E communication module and host computer that the utility model adopts MAXIM company to produce communicate.MAX487E is a kind of difference balanced type transponder chip; it is the small-power transceiver that is used for TTL agreement and 485 protocol conversions; it contains a driver and a receiver; adopt the half-duplex operation mode; several 128 of node has functions such as anti-thunderbolt, antistatic impact, limit slope drive and error protection.Receiver output RO links to each other with the 10th pin of AT89S52 single-chip microcomputer, and driver input end DI links to each other with the 11st pin of single-chip microcomputer, and driver output enable end links to each other with the 13rd pin of single-chip microcomputer, receiver output enable termination GND.Power module adopts Switching Power Supply, input AC220V, output DC ± 5V, DC ± 12V.
Claims (6)
1. one kind is used for the terminal controller that central air-conditioning measures, and described terminal controller comprises single-chip microprocessor MCU, display module, power module, it is characterized in that: the terminal controller and the charge system that are used for the central air-conditioning metering
Described terminal controller is installed in central air-conditioning fan coil end, and the parallel input interface by single-chip microprocessor MCU is connected to unlatching or the closed condition that central air-conditioning fan coil water valve condition checkout gear is used for the pickup coil water valve;
Parallel output interface by single-chip microprocessor MCU is connected to unlatching or the closing control of the control device realization terminal controller of coil pipe water valve to described coil pipe water valve;
The third gear wind speed checkout gear that parallel input interface by single-chip microprocessor MCU is connected to blower fan is used to gather the wind speed of blower fan;
Single-chip microprocessor MCU is gathered the fan speed signal, and according to the cold writing speed under the pre-set corresponding wind speed, the cold of actual consumption is calculated and stores the cold of user's actual consumption;
Described display module links to each other with single-chip microprocessor MCU and is used to show the cold of described user's actual consumption;
Described power module links to each other so that dc source to be provided with the power input of single-chip microprocessor MCU and display module respectively.
2. the terminal controller that is used for the central air-conditioning metering according to claim 1, it is characterized in that: described terminal controller also comprises the communication module of the communication interface that is connected to described single-chip microprocessor MCU, realization is communicated by letter with senior management computer.
3. the terminal controller that is used for the central air-conditioning metering according to claim 2 is characterized in that: the preferred AT89S52 single-chip microcomputer of described single-chip microprocessor MCU.
4. the terminal controller that is used for the central air-conditioning metering according to claim 2, it is characterized in that: the third gear wind speed detection signal of blower fan inputs to the parallel input interface of single-chip microprocessor MCU through optocoupler.
5. the terminal controller that is used for the central air-conditioning metering according to claim 2 is characterized in that: the control device of described coil pipe water valve is for being connected to first and second relays of the parallel output interface of single-chip microprocessor MCU after isolating through photoelectricity.
6. terminal charge system of fan coil that is used for central air-conditioning metering comprises a plurality ofly as the described terminal controller of claim 2-5, it is characterized in that:
Described each terminal controller is installed in corresponding central air-conditioning fan coil end, the communication module of described each terminal controller is communicated by letter with senior management computer by communication network, and the cold of user's actual consumption that each terminal controller is detected reaches senior management computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920206484 CN201561528U (en) | 2009-09-28 | 2009-09-28 | Tail end controller and billing system for central air-conditioning metering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920206484 CN201561528U (en) | 2009-09-28 | 2009-09-28 | Tail end controller and billing system for central air-conditioning metering |
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| CN201561528U true CN201561528U (en) | 2010-08-25 |
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| CN 200920206484 Expired - Fee Related CN201561528U (en) | 2009-09-28 | 2009-09-28 | Tail end controller and billing system for central air-conditioning metering |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279067A (en) * | 2011-04-01 | 2011-12-14 | 重庆大学 | Method and device for metering cooling capacity and heating capacity at tail end of fan coil of central air-conditioning system |
| CN102325190A (en) * | 2011-09-19 | 2012-01-18 | 郑州春泉暖通节能设备有限公司 | Central air-conditioner charging data transmission network and manager |
| CN104359193A (en) * | 2014-12-29 | 2015-02-18 | 江苏联宏自动化***工程有限公司 | Fan coil temperature controller adopting multiple energy saving models |
| CN105953383A (en) * | 2016-06-23 | 2016-09-21 | 武汉鸿图节能技术有限公司 | Wifi-based charging monitoring device, system and method for central air conditioner |
| CN112669530A (en) * | 2020-12-02 | 2021-04-16 | 武汉中电节能有限公司 | Method for improving data acquisition quality of air conditioner time type metering equipment |
-
2009
- 2009-09-28 CN CN 200920206484 patent/CN201561528U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279067A (en) * | 2011-04-01 | 2011-12-14 | 重庆大学 | Method and device for metering cooling capacity and heating capacity at tail end of fan coil of central air-conditioning system |
| CN102325190A (en) * | 2011-09-19 | 2012-01-18 | 郑州春泉暖通节能设备有限公司 | Central air-conditioner charging data transmission network and manager |
| CN104359193A (en) * | 2014-12-29 | 2015-02-18 | 江苏联宏自动化***工程有限公司 | Fan coil temperature controller adopting multiple energy saving models |
| CN105953383A (en) * | 2016-06-23 | 2016-09-21 | 武汉鸿图节能技术有限公司 | Wifi-based charging monitoring device, system and method for central air conditioner |
| CN105953383B (en) * | 2016-06-23 | 2019-05-17 | 武汉鸿图节能技术有限公司 | A kind of Charging System of Central Air Conditioning monitoring device, system and method based on wireless wifi |
| CN112669530A (en) * | 2020-12-02 | 2021-04-16 | 武汉中电节能有限公司 | Method for improving data acquisition quality of air conditioner time type metering equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20140928 |
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| EXPY | Termination of patent right or utility model |