CN205332349U - Central heating monitored control system that stands - Google Patents
Central heating monitored control system that stands Download PDFInfo
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- CN205332349U CN205332349U CN201620081060.5U CN201620081060U CN205332349U CN 205332349 U CN205332349 U CN 205332349U CN 201620081060 U CN201620081060 U CN 201620081060U CN 205332349 U CN205332349 U CN 205332349U
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Abstract
The utility model provides a central heating monitored control system that stands, the surveillance center with information storage constitutes by data acquisition module, data transmission module DTU and responsible control, data acquisition module includes power module, central controller, 14 way analog input module, 17 way IO input module, 3 way analog output modules and 7 way IO output module, adopt between central controller and the data transmission module DTU RS 485 interface both way junctions, data transmission module DTU with be responsible for the surveillance center of control with information storage pass through GPRS the internet network communication. This system adopts full variable frequency technology to adjust the defeated outflow who once nets distributed water pump, secondary network circulating pump and moisturizing pump in the central heating station to realized central heating long -range real -time monitoring in station and control through GPRS radio communication.
Description
Technical field
This utility model belongs to a kind of monitoring device, particularly to a kind of central heating stations monitoring system。
Background technology
China currently concentrates strength on carrying out resource-efficient and environment friendly society construction。Conservation-minded society carries out producing, consuming in the way of saving in the way of the utilization of energy resources high efficiency。Require in the every field produced, circulate, consume, to save use energy resources and to improve energy resources utilization ratio for core, with energy-conservation, water saving, material-saving, save land, comprehensive utilization of resources is attached most importance to, economic and social benefit high as far as possible is obtained, thus ensureing the sustainable development of economic society with low resource consumption。
Develop a circular economy, be the important channel building a resource-conserving and environment-friendly society and realizing sustainable development。Recycling economy turns to principle with minimizing, recycling and resource, with improve resource utilization for and the heart, it is produced as emphasis with resources conservation, comprehensive utilization of resources, cleaning, by adjusting structure, technological progress and the measure such as strengthen management, resource consumption is greatly reduced, reduces waste discharge, raises labour productivity。
Under the background developed a circular economy, urban district heating system should play a role, and central heating system is the important component part of cities and towns government utility, especially the important infrastructure in modernization cities and towns。
Urban district heating system is generally made up of three parts: i.e. the conversion of heat energy, the conveying of heat energy and terminal can processes。All there is very big energy-saving potential in these three link。
Concentrated supply of heating in the city cause is in the flourish phase in China, about thermal source, the power saving of central heating system obtains people and increasingly pays close attention to widely, by studying central heating system, all too many levels at central heating system have the potentiality saving the energy, such as energy-conservation and heating network Automated water equality aspect the energy-saving potential of thermal substation and two grades of nets is very big, wherein, the expectation of the automatic control level improving heat network system is the highest, it is considered as maximizing the hands section changing heating effect, also it is the optimum means that can realize energy saving in heating system。
Along with growing stronger day by day of China's central heating scale, manual operation controls can not meet far away the present situation of central heating。Most current newly-built or at the heating center founded a capital, heat exchange center has begun to consider the advanced management scheme such as Automated condtrol, unmanned, long-range monitoring, but the heat exchange station that major part is not yet transformed there is also the problem such as energy waste, extensive management, it is mainly manifested in two aspects: one is the startup/stopping of water circulating pump, operating, entirely without quantization, anthropic factor it is inevitable for producing waste unnecessary in a large number；Two is the VFC mode that do not adopt due to water circulating pump, so, it will be once operating will be running at full capacity, and the capacity motor of heat exchange station water circulating pump designs to meet limit ruuning situation, actual surplus is very big, so not only pipe network continues to bear high pressure, adds the maintenance load of pipe network, and brings again substantial amounts of electric energy and thermal waste virtually。
Summary of the invention
The purpose of this utility model is that a kind of central heating stations monitoring system of offer, this system adopts full converter technique to regulate the output flow of central heating stations one secondary net distributed water pump, secondary network circulating pump and small pump, and is achieved central heating stations remote real-time monitor and control by GPRS radio communication。
As above conceiving, the technical solution of the utility model is: a kind of central heating stations monitoring system, it is characterised in that: it is made up of with the Surveillance center with information storage data acquisition module, data transmission module DTU and responsible monitoring；Described data acquisition module includes power module, central controller, 14 road Analog input mModule, 17 road I/O input modules, 12 road analog output modules and 7 road I/O output modules, the input port of central controller receives 14 road Analog input mModule and the output signal of 17 road I/O input modules, and the output port of central controller connects 3 road analog output modules and 7 road I/O output modules respectively；RS 485 interface is adopted to be bi-directionally connected between described central controller and data transmission module DTU；Described data transmission module DTU is communicated by GPRS Internet network with the Surveillance center stored with information with being responsible for monitoring。
Above-mentioned central controller adopts DSPIC30F6010A。
Above-mentioned central controller connects MAX811 watchdog reset chip。
The heating plant operating condition signal of above-mentioned I/O input module collection is input to central controller, and these signals after photoelectric isolating circuit and relay process, are exported by central controller by 7 road I/O output modules。
The heating plant environment live signal that above-mentioned Analog input mModule gathers is after AD627 amplification chip, it is transferred to central controller, these signals are input to MAX538 chip and carry out DA conversion by central controller, then it is being input to voltage current adapter AD694, through AD694, the analog quantity of input is converted into current signal by voltage signal, signal after drive amplification to converter。
Above-mentioned analog output module adopts MAX538 chip to carry out D/A conversion, the digital signal transition that control chip exports is become analogue signal, then through V/I changer AD694, the analog quantity of input is converted into current signal by voltage signal, signal after drive amplification to converter。
This utility model has such advantages as and good effect:
1, this utility model adopts full converter technique to regulate the output flow of a secondary net distributed water pump, secondary network circulating pump and small pump, save electric energy largely, reduce the operating cost of heating system, make heat exchange station can guarantee that again heating quality on the basis of economical operation。
2, in order to enable heat exchange station to reach the operating condition of the best, this utility model also adopt GPRS wireless communication technology achieve the remote monitoring function to heating plant system。The operating condition of its each heating plant of compass of competency can be understood in real time by remote data transmission Surveillance center, monitor in real time, aggregate analysis regulates, and makes each heating plant in whole heating system be in optimal operating condition, reaches mating of heating load and calorific requirement。
3, this utility model to heating system control adopt local with remotely control the control model that combines, and the primary side water pump in heating plant, secondary side water pump and small pump are all adopted one main one for form, circuit design have employed photoelectrical coupler and carry out electrical isolation, thus fully ensured that stability and reliability that system works。
Accompanying drawing explanation
Fig. 1 is fundamental block diagram of the present utility model；
Fig. 2 is this utility model hardware principle block diagram；
Fig. 3 is data transmission module theory diagram；
Fig. 4 is power voltage step down module circuit diagram；
Fig. 5 is part I/O input module circuit diagram；
Fig. 6 is 7 road I/O output module circuit diagrams；
Tu7Shi 14 road Analog input mModule circuit diagram；
Tu8Shi 12 road analog output module circuit diagram；
Fig. 9 is this utility model hardware principle detailed diagram。
Detailed description of the invention
As shown in Fig. 1,2,3,9: a kind of central heating stations monitoring system, it is made up of with the Surveillance center with information storage data acquisition module, data transmission module DTU and responsible monitoring。Described data acquisition module includes power module, central controller, 14 road Analog input mModule, 17 road I/O input modules, 12 road analog output modules and 7 road I/O output modules, the input port of central controller receives 14 road Analog input mModule and the output signal of 17 road I/O input modules, and the output port of central controller connects 3 road analog output modules and 7 road I/O output modules respectively；MAX485 chip is adopted to intercom mutually between described central controller with data transmission module DTU；Described data transmission module DTU is communicated by GPRS Internet network with the Surveillance center stored with information with being responsible for monitoring。
The main contents that native system completes: one is that data acquisition module is by informations such as heat exchange station operational factors, summary of experience through the exchange daily operating mode of heat stations, input signal is classified, being broadly divided into analog input and I/O input, same output signal is also classified into simulation output and I/O output。Pass the signal to central controller, after central controller processes, output signal is sent to data transmission module GPRSDTU, and by GPRS Internet network, passes the signal to Surveillance center。
It is the control action of system on the other hand, during local control, it is possible to directly according to operation conditions, switch board is controlled on the spot；When remotely controlling, it is exchange heat stations operating condition through Surveillance center to be controlled, when Surveillance center monitors heat exchange station operating condition appearance exception, its relevant parameter can be directly regulated by monitoring center software, or making the action exchange heat stations such as start and stop water pump is controlled, these control signals can be sent to GPRSDTU through GPRS Internet network, is sent to main control chip through GPRSDTU, and exchange heat stations operating condition is controlled。
The data acquisition module of native system includes: as shown in Figure 5:
1, power module: as shown in Figure 4
System adopts 12V Switching Power Supply to power, and wherein master controller adopts 5V power supply to power, so needing 12V 5V power voltage step down change-over circuit。Adopting chip LM2575 blood pressure lowering chip to realize 12V 5V blood pressure lowering conversion, LM2575 series manostat is monolithic integrated optical circuit, it is provided that as the due all functions of step-down switching regulator, it is possible to regulated and load regulation by excellent line lotus, drives the load of 3A。
2, master controller adopts DSPIC30F6010A (high-performance 16 position digital signal controller)。Central controller can connect MAX811 watchdog reset chip, it is achieved the auto-reset function of single-chip microcomputer。
3,17 road I/O input module: as shown in Figure 5
Native system design has 17 road I/O input ports, is gathered the operating condition of heat exchange station part by the input of this 17 tunnel。Including: local, remotely control to select, primary side 1# pump motor starts, primary side water pump 2# electric motor starting, secondary side water pump 1# electric motor starting, secondary side water pump 2# electric motor starting, small pump 1# electric motor starting, small pump 2# electric motor starting, primary side 1# pump motor thermorelay fault, primary side water pump 2# motor heat relay fault, secondary side water pump 1# motor heat relay fault, secondary side water pump 2# motor heat relay fault, moisturizing water pump 1# motor heat relay fault, moisturizing water pump 2# motor heat relay fault, primary side circulating pump frequency converter failure, secondary side circulating pump frequency converter failure, small pump frequency converter failure。System additionally uses photoelectric isolation technology, further increases the anti-interference of system。
4,7 road I/O output module: as shown in Figure 6
The function of I/O output module circuit is that controller is for controlling motor start and stop and electromagnetic valve switch。
When the external world needs heating time, system controls motor start and stop, primary side 1# motor, secondary side 1# electric motor starting by I/O interface signal, and when above-mentioned motor runs and breaks down, corresponding standby motor (2#) starts；When secondary side return pipe net pressure reduces, system controls small pump by I/O interface signal and starts, and when same small pump main pump breaks down, system controls stand-by pump and starts。Specifically include:
Primary side 1# motor on off control, primary side 2# motor on off control, secondary side 1# motor on off control, secondary side 2# motor on off control, small pump 1# motor on off control, small pump 2# motor on off control, electromagnetic valve switch control totally 7 road IO output。
Its operation principle is: system by outside I/O Interface Controller once, secondary water pump and circulating pump motor start and stop, system adopts optocoupler to carry out electrical isolation, isolation external motor and system, it is prevented that interference。By the Guan Bi of I/O Interface Controller relay, control the start and stop of motor。Such as: YC_1#_SS_1 represents primary side motor on off control, after light-coupled isolation, utilizing audion enhancing signal driving force, signal becomes YC_1#_SS_2, then the Guan Bi of this signal control relay。
5,14 tunnel analog quantitys (sensor) input signal acquisition module: as shown in Figure 7
System adopts sensor acquisition external parameter variable, including temperature acquisition, pressure acquisition, flow collection and frequency collection。Native system has 14 road sensor input port, and wherein temperature acquisition includes: outdoor temperature, supply water temperature, primary water temperature, secondary water-supply temperature, a secondary return water temperature capturing；Pressure acquisition includes pressure of supply water, primary water pressure, secondary water-supply pressure, a secondary returning water pressure；Flow collection includes primary side pipe network flow collection, secondary side pipe network flow collection；Frequency collection includes primary side water pump frequency, secondary side circulating pump frequency and small pump frequency collection。Acquiring heat supply environment real time information is carried out by No. 14 sensors (including temperature, pressure and flow transducer) input。
Native system adopts the sensor with transmitter, and running voltage is 24V。It is designed with AD627 to amplify analog input signal。Signal after being amplified by AD627 passes to controller DSPIC30F6010A, uses 12 A/D conversions of DSPIC30F6010A to be acquired。
The signal of front end sensors collection is amplified through chip AD627。Chip AD627 is the track to track instrument amplifier of low-power consumption list dual power supply, and circuit design adopts manual of standards circuit。
The A/D converter of master controller DSPIC30F6010A has following main feature: successive approximation register (SAR) is changed, the conversion speed of maximum 100ksps, maximum 16 simulation input pins, external reference voltage input pin, 12 precision。
6,12 road analog output module: as shown in Figure 8
System adopts analog output module to control electric machine frequency, changes water supply flow。Adopt MAX538 chip carry out D/A conversion, by control chip export digital signal transition become analogue signal, then through V/I changer AD694, the analog quantity of input is converted into current signal by voltage signal, signal after drive amplification to converter。
First and second water pump, secondary side small pump are controlled by converter by central controller according to host computer or touch screen signal, to reach to control the purpose of flow。At auto state, PC control signal controls converter, and manual control signal is from motion tracking PC control signal, to control the flow of water pump；At manual mode, the available touch screen of operator determines that converter is directly remotely controlled by manual control signal, in native system, water pump is by Frequency Converter Control, the signal when automatic signal of host computer or manual mode adopts thousand marks, the 12 Bits Serial D/A conversion chip MAX538 linearities are good, meet requirement。Signal when automatic signal according to host computer or manual mode, exports through MAX538 after computing, is converted to current signal then through V/I changer AD694 and goes to control converter。
AD694 is a kind of monolithic voltage current converter (hereinafter referred to as V/I), input voltage signal is converted to 4 20mA current signals of standard by it, can be widely applied to pressure, flow, the parameter of the signals such as temperature is transmitted and to valve, the control of some common equipments in actuator and process control, it has input buffer amplifier, V/I change-over circuit, 4mA current offset and gating thereof and trimming circuit, reference voltage circuit, input range selects end, open circuit and off-limit alarm outfan, function is stronger, do not connect during use or only connect little outer member, it can reach the nonlinearity of 0.002%, precision is high, and strong interference immunity, it it is process control, the field such as industrial automation and system monitoring replaces a kind of desirable integrated circuit of discrete component design。
Claims (6)
1. a central heating stations monitoring system, it is characterised in that: it is made up of data acquisition module, data transmission module DTU and the Surveillance center being responsible for monitoring and storing with information；Described data acquisition module includes power module, central controller, 14 road Analog input mModule, 17 road I/O input modules, 12 road analog output modules and 7 road I/O output modules, the input port of central controller receives 14 road Analog input mModule and the output signal of 17 road I/O input modules, and the output port of central controller connects 3 road analog output modules and 7 road I/O output modules respectively；Adopting RS 485 interface to be bi-directionally connected between described central controller and data transmission module DTU, described data transmission module DTU is communicated by GPRS Internet network with the Surveillance center stored with information with being responsible for monitoring。
2. central heating stations according to claim 1 monitoring system, it is characterised in that: above-mentioned central controller adopts DSPIC30F6010A。
3. central heating stations according to claim 1 monitoring system, it is characterised in that: above-mentioned central controller connects MAX811 watchdog reset chip。
4. central heating stations according to claim 1 monitoring system, it is characterized in that: the heating plant operating condition signal of above-mentioned 17 road I/O input module collections is input to central controller, these signals after photoelectric isolating circuit and relay process, are exported by central controller by 7 road I/O output modules。
5. central heating stations according to claim 1 monitoring system, it is characterized in that: the heating plant environment live signal that above-mentioned 14 road Analog input mModule gather is after AD627 amplification chip, it is transferred to central controller, these signals are input to MAX538 chip and carry out DA conversion by central controller, then it is being input to voltage current adapter AD694, through AD694, the analog quantity of input is converted into current signal by voltage signal, signal after drive amplification to converter。
6. central heating stations according to claim 1 monitoring system, it is characterized in that: above-mentioned analog output module adopts MAX538 chip to carry out D/A conversion, the digital signal transition that control chip exports is become analogue signal, then through V/I changer AD694, the analog quantity of input is converted into current signal by voltage signal, signal after drive amplification to converter。
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| CN201620081060.5U CN205332349U (en) | 2016-01-26 | 2016-01-26 | Central heating monitored control system that stands |
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| CN201620081060.5U CN205332349U (en) | 2016-01-26 | 2016-01-26 | Central heating monitored control system that stands |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403006A (en) * | 2016-10-11 | 2017-02-15 | 山东华旗新能源科技有限公司 | Scheduling system and method of distributed energy resources for heating, cooling and heating water |
| CN109237602A (en) * | 2018-09-20 | 2019-01-18 | 哈尔滨顺易天翔热力技术开发有限公司 | Heat supply artificial intelligent control system and method |
| CN113623721A (en) * | 2021-08-10 | 2021-11-09 | 长春市云谷节能科技有限公司 | Supply and return water digital data processing system and method based on analog-to-digital conversion control |
| CN117190281A (en) * | 2023-09-05 | 2023-12-08 | 北京市煤气热力工程设计院有限公司 | Edge calculator and control system for heating power station |
-
2016
- 2016-01-26 CN CN201620081060.5U patent/CN205332349U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403006A (en) * | 2016-10-11 | 2017-02-15 | 山东华旗新能源科技有限公司 | Scheduling system and method of distributed energy resources for heating, cooling and heating water |
| CN106403006B (en) * | 2016-10-11 | 2019-10-11 | 山东华旗新能源科技有限公司 | The scheduling system and method for distributed energy heating refrigeration hot water |
| CN109237602A (en) * | 2018-09-20 | 2019-01-18 | 哈尔滨顺易天翔热力技术开发有限公司 | Heat supply artificial intelligent control system and method |
| CN113623721A (en) * | 2021-08-10 | 2021-11-09 | 长春市云谷节能科技有限公司 | Supply and return water digital data processing system and method based on analog-to-digital conversion control |
| CN117190281A (en) * | 2023-09-05 | 2023-12-08 | 北京市煤气热力工程设计院有限公司 | Edge calculator and control system for heating power station |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20170126 |