A kind of centralized control system of central air-conditioningTechnical field
The present invention relates to field of air conditioning, more specifically, it relates to a kind of centralized control system of central air-conditioning.
Background technology
With the development of the social economy, central air-conditioning is more and more universal, central air-conditioning is installed in office building extensively.ButIt is that the air conditioner indoor unit that office building is installed is more, floor space is big, brings many inconvenience to the control one by one of air-conditioning, usuallyIt is solved the above problems using centralized control.
Central air-conditioning mainly by indoor unit, line control machine and outdoor unit at, a usual outdoor unit connects more indoor units,Each indoor unit connects a line control machine.And indoor unit and outdoor unit are coordinated signals.Existing central air-conditioning energy controlSystem processed, including Centralized Controller, the master control borad that is set in each indoor unit and respectively each indoor unit configuration with masterThe line control machine that control plate is connected.And Centralized Controller is usually mounted to fixed position, and installed using wall is buried, it is not removableDynamic, user of service need to could control central air-conditioning to the fixed position of Centralized Controller.
Currently, the Chinese patent that notification number is CN203413777U discloses a kind of controlling system of central air conditioner,Drip irrigation device is：A kind of controlling system of central air conditioner, including Centralized Controller, it is separately mounted to the every of central air-conditioningMaster control borad, at least one mobile terminal in a air conditioner and remote server.
Said program solves the problems, such as that control mode is single, but since the working environment of office building is complex,It is outgoing to be frequently present of the indoor office worker of office, and indoor air conditioner works always, leads to not energy-efficient problem.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of centralized control system of central air-conditioningSystem, having makes office worker in office go out, and indoor air conditioner can close in time, reach energy saving advantage.
The present invention above-mentioned technical purpose technical scheme is that：A kind of concentration control of central air-conditioningSystem processed, including the master control borad being separately mounted in each air conditioner of central air-conditioning and each master control borad pass through universal serial busIt connects the Centralized Controller for controlling master control borad, referred to for directive sending control by wireless network connection with Centralized ControllerMultiple mobile terminals for enabling, be respectively arranged in each air conditioner of central air-conditioning for detect in air conditioner working region whetherThe detection device of someone and the cloud server being connect by internet with detection device, the cloud server receive detectionThe detection data that device is sent, and by wireless network orientation feedback to each mobile terminal, each mobile terminal is sentControl instruction controls corresponding master control borad to Centralized Controller, by Centralized Controller respectively.
By using above-mentioned technical proposal, each mobile terminal is directed to Centralized Controller by wireless network and sends controlThe control signal of each air conditioner gives cloud when the detection device in air conditioner detects nobody in air conditioner working regionIt holds server to send detection data, then detection data directive sending is given to each mobile terminal by cloud server, make to hold shiftingThe user of dynamic terminal knows the service condition of air-conditioning, when to go out, forgets after turning off air conditioner, is sent by cloud serverInformation can close air conditioner in time.
The present invention is further arranged to：The detection device includes pyroelectric sensor, transmitter and is passed with pyroelectricitySensor is electrically connected the control circuit that cloud server is sent data to for controlling transmitter.
By using above-mentioned technical proposal, around pyroelectric sensor detection whether someone, control circuit releases in response to heatThe detection signal of electric transducer achievees the purpose that real time monitoring to control whether transmitter sends detection data.
The present invention is further arranged to：The control circuit includes the normally opened contact of triode Q1, relay KM, relayThe base stage of switch KM1, the pyroelectric sensor and triode Q1 are electrically connected, collector and the power supply electricity of the triode Q1Property connection, the emitter of the triode Q1 and one end of relay KM be electrically connected, the other end ground connection of the relay KM,One end normally opened contact switch KM1 of the relay is electrically connected with the power supply, and the other end is grounded after being electrically connected with transmitter.
By using above-mentioned technical proposal, as air conditioner working region nobody, pyroelectric sensor does not have signal defeatedWhen going out, triode Q1 conductings, and then it is electric so that relay KM is obtained, and to make the normally opened contact switch KM1 of relay be closed, makes transmissionDevice works, and detection data is sent to cloud server.
The present invention is further arranged to：The control circuit further includes delay circuit, and the delay circuit includes the first electricityHinder R1, second resistance R2, capacitance C, comparator B and N-channel enhancement mode FET Q2, the first resistor R1 and triode Q1Collector be electrically connected after be electrically connected to a power source, be grounded after the electric connection of the emitter of the capacitance C and triode Q1, it is describedSecond resistance R2 is in parallel with capacitance C, and the in-phase input end of the comparator B is electrically connected with high potential one end of capacitance C, describedThe inverting input input of comparator B has reference voltage, and the grid of the N-channel enhancement mode FET Q2 is with comparator B'sOutput end is electrically connected, and the drain electrode of the N-channel enhancement mode FET Q2 is electrically connected at the one end relay KM, the relayThe device KM other ends are electrically connected at power supply, the source electrode ground connection of the N-channel enhancement mode FET Q2.
By using above-mentioned technical proposal, when pyroelectric sensor detects air conditioner working region nobody, three polesPipe Q1 conductings carry out charging a period of time to capacitance C, when the high voltage end of capacitance C is higher than the reference voltage of comparator B, thanHigh level is exported compared with device B, N-channel enhancement mode FET Q2 is made to be connected, and then transmitter works, due to the office people of officeThe discrepancy of member's frequent short time, can make staff leave Administrative Area the short time by the delay circuit of setting, and sendDevice does not work.
The present invention is further arranged to：The second resistance R2 is adjustable resistor.
By using above-mentioned technical proposal, adjustable resistance can be with adjusting resistance values size, to adjust delay circuitDelay time.
The present invention is further arranged to：The relay KM is parallel with diode Q3.
By using above-mentioned technical proposal, in relay KM parallel diodes, the sense for making relay KM generate after a loss of powerElectromotive force is answered to have circuit conducting.
The present invention is further arranged to：The detection device, which is electrically connected, is useful for determining for Separation control detection device workWhen device.
By using above-mentioned technical proposal, detection device is controlled by the timer interval period and is worked, inspection is reducedSurvey the energy consumption of device.
The present invention is further arranged to：The mobile terminal can be mobile phone, tablet computer or laptop.
By using above-mentioned technical proposal, mobile phone, tablet computer and laptop are convenient to carry out, and then convenientlyThe work of air conditioner is controlled outside.
In conclusion the invention has the advantages that：
First, each mobile terminal is directed to the control letter that Centralized Controller sends each air conditioner of control by wireless networkNumber, when the detection device in air conditioner detects nobody in air conditioner working region, testing number is sent to cloud serverAccording to, then by cloud server by detection data directive sending give each mobile terminal, so that the user for holding mobile terminal is known skyThe service condition of tune when to go out, forgets after turning off air conditioner that the information sent by cloud server can be closed in timeAir conditioner；
Second, when pyroelectric sensor detects air-conditioning section working region nobody, triode Q1 conductings carry out capacitance CCharging a period of time, when the high voltage end of capacitance C is higher than the reference voltage of comparator B, comparator B exports high level, makes N ditchesThe enhanced field-effect tube Q2 conductings in road, and then transmitter works, and due to the discrepancy of the office worker of office frequent short time, leads toCrossing the delay circuit of setting can make staff leave Administrative Area the short time, and transmitter does not work.
Description of the drawings
Fig. 1 is the functional block diagram of the present embodiment；
Fig. 2 is the circuit diagram of control circuit in the present embodiment.
In figure：1, master control borad；2, Centralized Controller；3, mobile terminal；4, detection device；5, cloud server；6, heat is releasedElectric transducer；7, transmitter；8, control circuit；9, timer；10, delay circuit.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention will be described in detail.
A kind of centralized control system of central air-conditioning, as shown in Figure 1, each air-conditioning including being separately mounted to central air-conditioningMaster control borad 1 in machine, with each master control borad 1 by universal serial bus connect Centralized Controller 2 for controlling master control borad 1, with collectionMiddle controller 2 is used for multiple mobile terminals 3 of directive sending control instruction by wireless network connection, is respectively arranged in central hollowIn each air conditioner adjusted for detect in air conditioner working region whether someone detection device 4 and with detection device 4 it is logicalThe cloud server 5 of internet connection, the detection data that 5 receiving detection device 4 of cloud server is sent are crossed, and passes through wireless networkNetwork orientation feedback to each mobile terminal 3, each mobile terminal 3 sends control instruction to Centralized Controller 2, passes through concentrationController 2 controls corresponding master control borad 1 respectively.
Each mobile terminal 3 is directed to the control letter that Centralized Controller 2 sends each air conditioner of control by wireless networkNumber, when the detection device 4 in air conditioner detects nobody in air conditioner working region, detection is sent to cloud server 5Data, then give detection data directive sending to each mobile terminal 3 by cloud server 5, so that the user for holding mobile terminal 3 is knownThe service condition of road air-conditioning when to go out, forgets after turning off air conditioner, the information energy that user is sent by cloud server 5It is enough to close air conditioner in time.
Universal serial bus is specially HBS buses or RS485 buses, and wireless network can be wireless wifi or mobile network.Mobile terminal 3 can be mobile phone, tablet computer or laptop.Mobile phone, tablet computer and laptop are convenient outgoingIt carries, and then the convenient work for controlling air conditioner outside.
Detection device 4 is electrically connected the timer 9 for being useful for the work of Separation control detection device 4, is spaced by timer 9Period control detection device 4 works, and reduces the energy consumption of detection device 4.
As depicted in figs. 1 and 2, detection device 4 include pyroelectric sensor 6, transmitter 7 and with pyroelectric sensor 6It is electrically connected the control circuit 8 that cloud server 5 is sent data to for controlling transmitter 7.Control circuit 8 includes triodeThe base stage of the normally opened contact switch KM1 of Q1, relay KM, relay, pyroelectric sensor 6 and triode Q1 are electrically connected, and threeThe collector of pole pipe Q1 is electrically connected with the power supply, and the emitter of triode Q1 is electrically connected with one end of relay KM, relayThe other end of KM is grounded, and one end normally opened contact switch KM1 of relay is electrically connected with the power supply, and the other end is electrical with transmitter 7It is grounded after connection.
As air conditioner working region nobody, when pyroelectric sensor 6 is exported without signal, triode Q1 conductings, intoAnd it is electric so that relay KM is obtained, and to make the normally opened contact switch KM1 of relay be closed, transmitter 7 is made to work, to cloud server5 send detection data.
Control circuit 8 further includes delay circuit 10, delay circuit 10 include first resistor R1, second resistance R2, capacitance C,The collector of comparator B and N-channel enhancement mode FET Q2, first resistor R1 and triode Q1 are electric with power supply after being electrically connectedConnection is grounded after the emitter electric connection of capacitance C and triode Q1, and second resistance R2 is in parallel with capacitance C, and comparator B's is samePhase input terminal and high potential one end of capacitance C are electrically connected, and the inverting input input of comparator B has reference voltage, N-channel to increaseThe grid of strong type field-effect tube Q2 is electrically connected with the output end of comparator B, and the drain electrode of N-channel enhancement mode FET Q2 is electricalIt is connected to the one end relay KM, the relay KM other ends are electrically connected at power supply, and the source electrode of N-channel enhancement mode FET Q2 connectsGround.
When pyroelectric sensor 6 detects air conditioner working region nobody, triode Q1 conductings carry out capacitance CCharging a period of time, when the high voltage end of capacitance C is higher than the reference voltage of comparator B, comparator B exports high level, makes N ditchesThe enhanced field-effect tube Q2 in road conductings, and then transmitter 7 works, due to the discrepancy of the office worker of office frequent short time,Staff can be made to leave Administrative Area the short time by the delay circuit 10 of setting, and transmitter 7 does not work.
Second resistance R2 is adjustable resistor, and adjustable resistance can be with adjusting resistance values size, to adjust delay circuit10 delay time.Relay KM is parallel with diode Q3.In relay KM parallel diodes, relay KM is made to produce after a loss of powerRaw induced electromotive force has circuit conducting.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementationExample, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the artThose of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modificationsIt should be regarded as protection scope of the present invention.