CN108512308B - Building energy consumption collection system - Google Patents
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- CN108512308B CN108512308B CN201810384086.0A CN201810384086A CN108512308B CN 108512308 B CN108512308 B CN 108512308B CN 201810384086 A CN201810384086 A CN 201810384086A CN 108512308 B CN108512308 B CN 108512308B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000000819 phase cycle Methods 0.000 claims abstract description 3
- 239000000779 smoke Substances 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H02J13/0062—
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- H02J13/0075—
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to the technical field of energy consumption management, in particular to a building energy consumption acquisition device, which comprises a switching power supply, a storage module, an MCU (micro control unit), an acquisition module, a current and voltage input module, a metering module and a wireless communication module, wherein the switching power supply is connected with the storage module; the voltage phase sequence of current input can be freely configured according to the situation of a field, meanwhile, the information of a current input circuit can be arranged in a storage guide device through a wireless module or an RS485 module, the system can conveniently read the circuit information, a half-wave rectifying circuit and a pi-shaped filter circuit convert the circuit input by the current input module into stable direct current, the circuit is detected through a current detection module, the detection precision is higher, an overvoltage detection circuit realizes the protection and adjustment functions, a ZigBee circuit can increase the node transmission efficiency, and a Bluetooth communication circuit realizes the mobile phone interconnection.
Description
Technical Field
The invention relates to the technical field of energy consumption management, in particular to a building energy consumption acquisition device.
Background
With the development of the internet of things and the increasing demands for accurate positioning of unit energy consumption and energy consumption management, parameters needing to be managed are correspondingly increased. In this field, often adopt guide tracked ammeter collection electric energy, electric leakage alarm device reports to the police to the electric leakage condition, adopts temperature acquisition device to gather the temperature, adopts smoke alarm device to gather smog information. The construction difficulty is often caused to be big, and occupation space is big, needs to change original distribution wiring, and a lot of products are put together and will cause the big problem of the fault rate of product again.
On the other hand, a plurality of measuring modules of the building energy consumption acquisition device in the prior art, such as the leakage alarm module, the smoke alarm module, the temperature module and other modules, are generally arranged when the energy consumption acquisition device is manufactured, subsequent function expansion is not considered, so that when a new function needs to be added, the whole building energy consumption acquisition device is often required to be replaced, the replacement cost is inevitably high, therefore, the enthusiasm of the building energy consumption acquisition device for replacing the new function by a user is struck, and therefore, the building energy consumption acquisition device capable of simply and quickly realizing the function expansion is expected to be provided.
In addition, the building energy consumption acquisition device in the prior art does not have good intelligent display function, if can not simply clearly show relevant information and control.
In view of the above technical problems, it is desirable to provide a device for collecting electric quantity, leakage current, temperature, and smoke, which has a small size, a low cost, and a convenient installation, and can collect electric quantity, leakage current, temperature, and smoke without changing the original circuit, and can rapidly and conveniently expand the disclosure thereof, and effectively solve the above problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a building energy consumption acquisition device which can acquire electric quantity information of a plurality of energy consumption management units and electric leakage, temperature, humidity and smoke parameters of a power distribution room, and has the advantages of more convenient and safer node transmission and higher performance.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a building energy consumption collection system which characterized in that: the device comprises an acquisition function box, wherein the acquisition function box is a cuboid box body, and a switching power supply, a storage module, an MCU (micro control unit), an acquisition module, a current and voltage input module, a metering module and a wireless communication module are arranged at the upper left corner of the box body;
meanwhile, a plurality of function expansion slots are also arranged and used for carrying out portable installation on the function modules so as to expand the functions, the installation slots adopt standard PCI slots, the PCI slots adopt standard data transmission protocols to define the PCI slots, and for each function module, the data transmission protocols corresponding to the PCI slots are adopted so as to support rapid plugging and unplugging for data communication;
the current and voltage input is connected with a circuit to be tested through an LM317 three-terminal voltage stabilizing circuit, the current and voltage input is connected with a voltage and current detection module and a leakage alarm module, the switching power supply is connected with an overvoltage detection circuit, the current and voltage input is connected with the metering modules, the metering modules are in wireless communication connection through ZigBee circuits, an Andriod operating system is arranged in the main MCU and can be used for operating and installing corresponding processing software, meanwhile, the main MCU is connected with a smart phone or a mobile terminal through a Bluetooth communication circuit, and the metering module, the storage module, the wireless communication module and the acquisition module are all connected with the MCU;
the storage module is used for storing data including measurement and temperature data acquired by each functional module;
the function block expansion slot can be provided with a proper function module and a necessary communication module according to the requirement;
the device also comprises a clock module, a storage module and a reading device, wherein the acquisition module comprises a temperature and humidity acquisition module and a smoke alarm module, the temperature and humidity acquisition module acquires the temperature and humidity inside the building energy consumption acquisition device and the temperature and humidity of the external environment, an electric leakage mutual inductor in the electric leakage alarm module is connected into a bus, an output interface of the electric leakage mutual inductor is connected into an interface corresponding to the device to monitor the electricity leakage condition in real time, the reading device collects electric quantity parameters, electric leakage information, temperature and humidity information, smoke alarm information or other information, the wireless communication module can be an RS485 module and can be used for configuring parameters and line information or information acquired by the reading device, and the MCU is connected with the clock module and the storage module;
a light alarm signal is arranged at the top of the acquisition function box and used for controlling the main MCU module to find light flicker warning when overhigh temperature, abnormal electricity use or abnormal smoke alarm module is detected;
the front surface of the acquisition function box is provided with a touch screen display panel which is in data connection with the main control MCU module, the touch screen panel is used for displaying the electric quantity, the temperature and humidity data and the current time acquired by the metering module, and the function module also has a menu query function and is used for displaying the queried related information; when an alarm or an error occurs, the touch display panel can display error information or alarm information so as to provide a professional with quick treatment of the found problem.
Preferably, the ZigBee circuit is respectively transmitted to a level conversion chip SP3485 powered by a 3.3V level through optical coupling isolation, and after the level is converted into a power supply level, the power supply level is connected through a signal transmission channel of the metering module, R6 and R7 are pull-up and pull-down resistors respectively, the input level state is an idle state, and the ZigBee node connected to the metering module can be powered by a power supply of the metering module.
Preferably, the current and voltage input comprises a current input module and a voltage input module, the number of current input module paths can be configured according to the number of current paths to be monitored on site, simultaneously, the voltage sequence corresponding to the current can also be configured to the voltage input module three-phase four-wire or single-phase, and after the voltage is input, the voltage is isolated by a voltage transformer so as to isolate the main system from the signal input.
Preferably, the addresses of the devices adopt 1 address mode or 4 address modes, the communication protocol of the 1 address mode is a standard modbus-RTU, the 4 address modes adopt custom protocols, the addresses of the devices are different, and the addresses of the devices are different from the addresses of the modbus-RTU only in address fields.
Preferably, the LM317 three-terminal voltage stabilizing circuit adds a feedback resistor R1 on an adjusting terminal ADJ of the LM317, and the potentiometer R2 adjusts the position of an ADJ pin to realize the adjustment of the voltage Vout.
Preferably, the metering module comprises a current detection module, a voltage detection module, a half-wave rectification circuit and a pi-type filter circuit, the voltage detection module detects the voltage by using a voltage sensor and transmits data to the MCU, the current detection module detects the direct current, and the half-wave rectification circuit and the pi-type filter circuit convert the circuit input by the current input module into stable direct current and detect the stable direct current through the current detection module.
Preferably, the transformer T1 of the half-wave rectifier circuit reduces the voltage and outputs a sinusoidal signal from the secondary side, the diode D1 is forward biased and conducted in the positive half cycle, the current flows to the load R1 through the diode D1, the voltage across the load R1 is 0V in the negative half cycle, and the voltage across the load R1 is positive, negative, and negative; and the capacitor C1 of the pi-type filter circuit realizes energy storage capacitor filtering, and the capacitor C2 conducts the residual direct current to the ground wire and outputs a direct current voltage signal.
Preferably, when an overvoltage signal is generated, the overvoltage detection circuit breaks down the piezoresistor to present a low resistance value or even a state close to a short circuit, so that a large current is generated on the primary side of the current transformer, a small current is generated on the secondary side through the mutual inductance of the coil, and the current signal is converted into a voltage signal through the precision resistor; after the signal is input to the voltage comparator LM393, the voltage comparator LM393 outputs a high level, the control pulse 1 output through the not gate a controls the power supply circuit, and the switching power supply circuit is disconnected.
(III) advantageous effects
The invention has the function of saving the 15-day electric quantity information and is convenient for a communication manager to read historical data. The wireless module has two modes: one is a configuration mode for setting parameters, and the other is a normal mode in which the communication management system reads data of the device of the present invention. The device can only be in one of the modes, and switching is carried out through a switch on the device or switching is carried out through RS485 communication. Many parameters need to be set, and two modes can be used for setting, one mode is set through local RS485, or the configuration mode of the wireless module is used for setting. Each path of current is set corresponding to the name of the energy consumption management unit, and the set name can be Chinese or English. This information is stored in the memory of the device. The parameters that can be read include the name corresponding to each current, the power information corresponding to each current, the state information of the device (which modules are used, the number information of the current lines of 24 currents), and other information (leakage, smoke, temperature) between power distribution rooms. The electric quantity information comprises voltage, current, active power and electric energy information, a circuit input by the current input module is converted into stable direct current by the half-wave rectifying circuit and the pi-type filtering circuit, the detection is performed by the current detection module, the detection precision is higher, the overvoltage detection circuit achieves the protection and adjustment functions, the ZigBee circuit can increase the node transmission efficiency, and the Bluetooth communication circuit achieves the mobile phone interconnection. Through the modularized function expansion slot, the expansion of the function can be realized quickly, and the installation cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a diagram of the arrangement of the collecting function box of the building energy consumption collecting device of the invention;
FIG. 3 is a schematic diagram of a pi filter circuit;
FIG. 4 is a schematic diagram of a half-wave rectifier circuit of the present invention;
FIG. 5 is a schematic diagram of a ZigBee circuit of the present invention;
FIG. 6 is a schematic diagram of an LM317 three-terminal voltage regulator circuit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the building energy consumption collecting device comprises a collecting function box, wherein the collecting function box is a cuboid box body, and a switching power supply, a storage module, an MCU, a collecting module, a current and voltage input module, a metering module and a wireless communication module are arranged at the upper left corner of the box body;
meanwhile, a plurality of function expansion slots are also arranged and used for carrying out portable installation on the function modules so as to expand the functions, the installation slots adopt standard PCI slots, the PCI slots adopt standard data transmission protocols to define the PCI slots, and for each function module, the data transmission protocols corresponding to the PCI slots are adopted so as to support rapid plugging and unplugging for data communication;
the current and voltage input is connected with a circuit to be tested through an LM317 three-terminal voltage stabilizing circuit, the current and voltage input is connected with a voltage and current detection module and a leakage alarm module, the switching power supply is connected with an overvoltage detection circuit, the current and voltage input is connected with the metering modules, the metering modules are in wireless communication connection through ZigBee circuits, an Andriod operating system is arranged in the main MCU and can be used for operating and installing corresponding processing software, meanwhile, the main MCU is connected with a smart phone or a mobile terminal through a Bluetooth communication circuit, and the metering module, the storage module, the wireless communication module and the acquisition module are all connected with the MCU;
the storage module is used for storing data including measurement and temperature data acquired by each functional module;
the function block expansion slot can be provided with a proper function module and a necessary communication module according to the requirement;
the device also comprises a clock module, a storage module and a reading device, wherein the acquisition module comprises a temperature and humidity acquisition module and a smoke alarm module, the temperature and humidity in the temperature acquisition module and the temperature and humidity in the external environment are acquired, a leakage mutual inductor in the leakage alarm module is connected into a bus, an output interface of the leakage mutual inductor is connected into an interface corresponding to the device to monitor the leakage condition in real time, the reading device collects electric quantity parameters, leakage information, temperature and humidity information, smoke alarm information or other information, the wireless communication module can be an RS485 module and can carry out parameter configuration and line information setting or information acquired by the reading device, and the MCU is connected with the clock module and the storage module;
a light alarm signal is arranged at the top of the acquisition function box and used for controlling the main MCU module to find light flicker warning when overhigh temperature, abnormal electricity use or abnormal smoke alarm module is detected;
the front surface of the acquisition function box is provided with a touch screen display panel which is in data connection with the main control MCU module, the touch screen panel is used for displaying the electric quantity, the temperature and humidity data and the current time acquired by the metering module, and the function module also has a menu query function and is used for displaying the queried related information; when an alarm or an error occurs, the touch display panel can display error information or alarm information so as to provide a professional with quick treatment of the found problem.
In the invention, a modular design is adopted, the maximum 24 single-phase metering points of one device are calculated, and 3 single-phase metering points are calculated in three phases and can be configured according to the number of user energy consumption management units. Still include 1 way electric leakage collection module, 2 way temperature collection, 1 way smog collection, RS485 communication, wireless communication function, each module can be tailor according to user's needs. Wherein, one of RS485 communication and wireless communication is needed.
The RS485 communication module of the invention adopts a Modbus-RTU protocol for communication. The wireless communication module rola communicates with the MCU by adopting a Modbus-RTU protocol. And the remote communication manager also adopts rola communication and the MCU of the communication manager also adopts modbus-RTU, and the device and the communication manager directly seem to directly use the modbus-RTU for communication.
The voltage input of the electric quantity acquisition module can be in a three-phase four-wire, single-phase and single-phase three-wire mode, and the current input is accessed by adopting the current transformer, so that the corresponding current transformer is accessed into a circuit when the energy consumption of which unit is required to be measured. If the micro breaker is not installed on the distribution line, an open type current transformer can be used; and on a distribution line equipped with a miniature circuit breaker, a closed-type current transformer or an open-type current transformer may be used. Generally, the precision of the closed-type current transformer is greater than that of the open-type current transformer.
The 2-path temperature acquisition module is used for measuring the internal temperature of the device by 1 path and measuring the external environment temperature by 1 path, and is mainly used for monitoring and measuring the temperature of a power distribution room and preventing fire alarm.
The 1-path leakage module disclosed by the invention can be used for monitoring the leakage condition in real time by only connecting one leakage transformer into the bus circuit and then connecting the output interface of the leakage transformer into the corresponding interface of the device.
The smoke information acquisition module uses a smoke alarm sensor with a dry node output. When the smoke concentration is greater than the limit value of the smoke sensor, the dry node outputs a closing signal.
The address of the invention has two modes, namely a field configuration mode (the address is 1 byte, and the standard modbus-RTU) and a factory-set unique coding address (the address is 4 bytes, and the communication protocol is similar to the modbus-RTU). The two coding modes are selected alternatively. The 2 nd encoding mode can track the information of each device when leaving the factory.
The invention has the function of saving the 15-day electric quantity information and is convenient for a communication manager to read historical data.
The wireless module of the present invention has two modes: one is a configuration mode for setting parameters, and the other is a normal mode in which the communication management system reads data of the device of the present invention. The device can only be in one of the modes, and switching is carried out through a switch on the device or switching is carried out through RS485 communication.
Many parameters of the invention need to be set, and two modes can be used for setting, wherein one mode is set through local RS485 or the configuration mode of a wireless module.
The invention can set the name of the energy consumption management unit corresponding to each path of current, and the set name can be Chinese or English. This information is stored in the memory of the device.
The parameters that can be read by the invention include the name corresponding to each path of current, the electric quantity information corresponding to each path, the state information of the device (which modules are used, the path number information of 24 paths of current lines), and other information (electric leakage, smoke and temperature) between power distribution rooms. The electric quantity information comprises voltage, current, active power and electric energy information.
As can be seen from figure 1, the device comprises a switching power supply, an RTC clock module, a storage module, a three-phase voltage input module, a main MCU, a metering module, a 24-path current input module, a wireless communication module, an RS485 module and a temperature acquisition module.
The power supply of the device is a switch power supply, and the power is directly taken from the signal. The input voltage is standard-matched into three-phase four-wire or single-phase. After the voltage is input, the isolation is carried out through a voltage transformer. The isolation of the main system and the signal input is realized, the device is safer, and the personal safety can be ensured under the state of wiring error.
The current input module has at most 24 inputs, and the voltage phase sequence corresponding to the current input can be set.
The name of the current input line can be set and stored in the memory module of the lead device. The setting of the general line name is carried out in the construction debugging stage. These names may be set by RS485 or a radio module and read by RS485 or a radio module.
The RTC clock module provides a clock for the MCU, and the MCU is convenient to store the acquired electric quantity parameters.
The wireless communication module adopts a transparent forwarding mode, adopts rola communication on the uplink and is connected with the MCU through a serial port.
The RS485 communication and wireless communication modules can be used for reading 24 paths of electric quantity parameters, temperature, smoke information, leakage information or parameters for setting the device.
The capacitor C1 of the pi-type filter circuit shown in fig. 3 realizes storage capacitor filtering, and the capacitor C2 conducts the remaining dc to the ground line and outputs a dc voltage signal.
As shown in fig. 4, a half-wave rectifier circuit has a transformer T1 for reducing the voltage and outputting a sinusoidal signal from the secondary side, a diode D1 is forward biased and turned on in the positive half cycle, a current flows to a load R1 through a diode D1, a positive voltage and a negative voltage are applied to R1, and the voltage across the load R1 is 0V in the negative half cycle.
In fig. 5, the ZigBee circuit is respectively transmitted to a level conversion chip SP3485 powered by a 3.3V level through optical coupling isolation, and after the level is converted into a power supply level, the power supply level is connected via a signal transmission channel of the metering module, R6 and R7 are pull-up and pull-down resistors, respectively, the input level state is an idle state, and the ZigBee node connected to the metering module can be powered by a power supply of the metering module.
In fig. 6, a feedback resistor R1 is added to the regulation terminal ADJ of the LM317 by the LM317 three-terminal voltage regulator, and the adjustment of the voltage Vout is realized by adjusting the bit of the ADJ pin by a potentiometer R2.
The device adopts the screw installation, when the construction, only need during mutual-inductor cover corresponding circuit, voltage signal access device in, just can normally work. For simple wiring, wireless communication is preferably used, and RS485 is used for parameter configuration and local debugging. Because the wireless communication space is relatively slow. And the RS485 communication is used to save debugging time. If an open type current transformer is used, the device can be installed under the condition that normal power supply is not influenced, but the precision is not high, and the device is suitable for occasions where power failure cannot be caused or no idle opening exists. If there is an open on the line and the operation is in a short power failure, a closed type current transformer can be used. The closed type current transformer has higher precision than the open type current transformer and is cheaper. The user can make a selection according to the field situation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a building energy consumption collection system which characterized in that: the device comprises an acquisition function box, wherein the acquisition function box is a cuboid box body, and a switching power supply, a storage module, an MCU (micro control unit), an acquisition module, a current and voltage input module, a metering module and a wireless communication module are arranged at the upper left corner of the box body; the current voltage input comprises a current input module and a voltage input module;
the system is characterized by also comprising a plurality of function expansion slots, a plurality of PCI slots and a plurality of data transmission protocols, wherein the function expansion slots are used for carrying out portable installation on the function modules so as to expand functions, the installation slots adopt standard PCI slots, the PCI slots adopt standard data transmission protocols to define the PCI slots, and for each function module, the data transmission protocols corresponding to the PCI slots are adopted so as to support rapid plugging and unplugging for data communication;
the current and voltage input is connected with a circuit to be tested through an LM317 three-terminal voltage stabilizing circuit, the current and voltage input is connected with a voltage and current detection module and a leakage alarm module, the switching power supply is connected with an overvoltage detection circuit, the current and voltage input is connected with the metering modules, the metering modules are in wireless communication connection through ZigBee circuits, an Andriod operating system is arranged in the MCU and used for operating and installing corresponding processing software, meanwhile, the MCU is connected with a smart phone or a mobile terminal through a Bluetooth communication circuit, and the metering modules, the storage module, the wireless communication module and the acquisition module are all connected with the MCU;
the storage module is used for storing data including measurement and temperature data acquired by each functional module;
the function expansion slot is provided with a function module and a communication module according to needs;
the building energy consumption acquisition device further comprises a clock module, a storage module and a reading device, wherein the acquisition module comprises a temperature and humidity acquisition module and a smoke alarm module, the temperature and humidity acquisition module acquires the internal temperature and humidity and the external environment temperature and humidity of the building energy consumption acquisition device, an electric leakage mutual inductor in the electric leakage alarm module is connected into a bus circuit, an output interface of the electric leakage mutual inductor is connected into an interface for reading electric leakage information in the reading device in the building energy consumption acquisition device, the electric leakage condition is monitored in real time, the reading device reads electric quantity parameters, electric leakage information, temperature and humidity information and smoke alarm information, the wireless communication module is an RS485 module and is used for configuring and setting parameters and circuit information or reading information acquired by the reading device, and the MCU is in signal connection with the clock module and the storage module;
the top of the collection function box is provided with a light alarm device, and the light alarm device is controlled by the MCU module to send out light flashing warning when the temperature is detected to be too high, or the electricity quantity is abnormal or the smoke alarm module detects abnormality.
2. The building energy consumption acquisition device according to claim 1, characterized in that: the building energy consumption acquisition device also comprises a touch screen display panel arranged on the front surface of the acquisition function box and in data connection with the MCU module, the touch screen display panel displays the electric quantity, the temperature and humidity data and the current time acquired by the metering module, and the touch screen display panel also has a menu query function and is used for displaying queried information; the touch screen display panel can display error information or alarm information when an alarm or an error occurs.
3. The building energy consumption acquisition device according to claim 1, characterized in that: the signal of the ZigBee circuit is transmitted to a level conversion chip SP3485 powered by a 3.3V level through optical coupling isolation respectively, and is connected with the signal of the metering module after being converted into a power supply level, wherein R6 and R7 are pull-up and pull-down resistors respectively, the input level state is an idle state, and the ZigBee node connected to the metering module supplies power by using the power supply of the metering module.
4. The building energy consumption acquisition device according to claim 1, characterized in that: the current and voltage input comprises a current input module and a voltage input module, the number of the current input module is configured according to the number of current circuits to be monitored on site, meanwhile, the voltage phase sequence corresponding to the current is also configured with three-phase four-wire or single-phase electricity through the voltage input module, and the voltage is isolated through a voltage transformer after being input, so that a main system is isolated from signal input.
5. The building energy consumption acquisition device according to claim 1, characterized in that: the address of the device adopts 1 address mode or 4 address modes, the communication protocol of the 1 address mode is a standard modbus-RTU, the 4 address modes adopt a custom protocol, the address of each device is different, and the address is different from the modbus-RTU protocol only in an address domain.
6. The building energy consumption acquisition device according to claim 1, characterized in that: a feedback resistor R1 is added on an adjusting end ADJ of the LM317 by the LM317 three-terminal voltage stabilizing circuit, and the potentiometer R2 adjusts the potential of an ADJ pin to realize the adjustment of the voltage Vout.
7. The building energy consumption acquisition device according to claim 1, characterized in that: the metering module comprises a current detection module, a voltage detection module, a half-wave rectification circuit and a pi-type filter circuit, the voltage detection module detects by using a voltage sensor and transmits data to the MCU, the current detection module detects direct current, and the half-wave rectification circuit and the pi-type filter circuit convert current input by the current input module into stable direct current and detect the current through the current detection module.
8. The building energy consumption collection device according to claim 7, characterized in that: a transformer T1 of the half-wave rectifying circuit reduces the voltage and then outputs a sinusoidal signal from the secondary side, when the half cycle is positive, a diode D1 is in forward bias conduction, the current flows to a load R1 through a diode D1, the voltage of the upper part, the lower part and the positive part is loaded on R1, and when the half cycle is negative, the voltage of the two ends of the load R1 is 0V; and the capacitor C1 of the pi-type filter circuit realizes energy storage capacitor filtering, and the capacitor C2 conducts the residual direct current to the ground wire and outputs a direct current voltage signal.
9. The building energy consumption acquisition device according to claim 1, characterized in that: when an overvoltage signal is generated, the voltage dependent resistor is broken down to present a low resistance value close to a short circuit state, so that a large current is generated on the primary side of the current transformer, a small current is generated on the secondary side through the mutual inductance effect of the coil, and the current signal is converted into a voltage signal through the precision resistor; after the voltage signal is input to the voltage comparator LM393, the voltage comparator LM393 outputs a high level, the control pulse output by the NOT gate A controls the power supply loop, and the switching power supply circuit is disconnected.
10. A method of building energy consumption acquisition device is characterized in that: the building energy consumption acquisition device is connected through an App installed on a mobile phone by adopting the building energy consumption acquisition device as claimed in any one of the preceding claims 1-9, so as to access the acquired data of the building energy consumption acquisition device.
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Effective date of registration: 20200930 Address after: 310012 block G1, 12 / F, building a, Paradise Software Park, No.3 xidoumen Road, Hangzhou, Zhejiang Province Applicant after: Hangzhou mutual comprehensive energy service Co., Ltd Address before: 310012 D2, 19 floor, A tower, 3 Paradise Plaza, Xihu District, Hangzhou, Zhejiang. Applicant before: HANGZHOU TAIJUE TECHNOLOGY Co.,Ltd. |
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