CN202394357U - Data acquisition device for large-scale public building energy consumption monitoring system - Google Patents
Data acquisition device for large-scale public building energy consumption monitoring system Download PDFInfo
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Abstract
The utility model discloses a data acquisition device for a large-scale public building energy consumption monitoring system. A plurality of monitoring subnets are distributed in a whole monitored building. Each monitoring subnet comprises the data acquisition device, and a remote transmission metering basic meter which is connected with the data acquisition device through an RS485 bus, a remote transmission metering basic meter which is connected with the data acquisition device through an M-Bus, and a remote transmission metering basic meter which is connected with the data acquisition device through a ZigBee wireless network. The data acquisition device communicates with each energy consumption sub-item metering basic meter through a bus or in a wireless mode, analyzes and processes data, and transmits the data to a monitoring center through a network by using a general packet radio service (GPRS) module of the data acquisition device. The monitoring center receives and stores the energy consumption data, analyzes and processes the energy consumption data, and then displays the energy consumption data to users, and history energy consumption data can be queried by users through a data management function. The data acquisition device has strong data communication capacity, data processing capacity and equipment environmental adaptability.
Description
Technical Field
The utility model belongs to the technical field of wireless sensor network, field bus, embedded system, concretely relates to a data collection station for large-scale public building energy consumption monitoring system.
Background
Building energy consumption, industrial energy consumption and traffic energy consumption are called three energy-consuming households, and the energy utilization rate of large public buildings in the building energy consumption is particularly low. China is in energy shortage, energy consumption monitoring is carried out, building energy consumption data are obtained in time, and the method has important practical significance for improving the energy utilization rate.
The key for developing building energy conservation and making energy conservation measures is to acquire building energy consumption data in time, and the energy consumption data can be acquired by constructing an energy consumption monitoring system. The large-scale public building energy consumption monitoring system comprises a metering base table supporting remote transmission, a data acquisition unit and a monitoring center. The remote transmission metering base meter is deployed in a monitoring building to meter each energy consumption item, the energy consumption data is transmitted to the data acquisition unit in a wired or wireless communication mode, the data acquisition unit processes the energy consumption data and transmits the energy consumption data to the monitoring center in a remote transmission mode, and a user can manage an energy consumption monitoring network and collect monitoring information through the monitoring center. Therefore, the data collector is one of the key parts of the whole energy consumption monitoring system.
Currently, some energy consumption monitoring systems have been developed. The method solves the problem of acquiring the energy consumption data to a great extent, and provides detailed and reliable data support for formulating energy-saving measures macroscopically. However, these data collectors have the following problems: 1) the method has the advantages that the subentry measurement is not realized generally, only energy consumption data such as single electricity consumption or water consumption can be measured, and the method is not beneficial to making more specific energy-saving measures. 2) The communication between the data acquisition unit and the energy consumption metering base meter generally adopts a Bus mode, and only one of RS485 or M-Bus is adopted, so that the user has limitation in the aspects of selection and replacement of the base meter.
With the development of technologies such as embedded type and wireless communication, the existing energy consumption monitoring system is improved, and the problem that the communication interface of the energy consumption monitoring equipment is single and the like is solved. The improved data acquisition device is provided with two types of communication interfaces. One type is a Bus mode, the Bus mode has the characteristics of simplicity and low cost, is suitable for being adopted in places where wiring is easy, and has two Bus modes of M-Bus and RS485, so that the selection range of a user base table is wider; the other type is a ZigBee wireless mode, and the interface is suitable for being adopted in places where buses are not conveniently arranged temporarily.
Disclosure of Invention
The utility model discloses to prior art's not enough, provide a data collection station for large-scale public building energy consumption monitoring system.
The utility model discloses a concrete scheme:
the utility model discloses a power management module, GPRS module MC35i, M-Bus module, zigBee wireless module HZ2012, RS485 module and processor module.
The power management module includes: the voltage reduction rectification circuit is used for rectifying the input power frequency alternating current into direct current to supply to the-15V voltage conversion circuit and the +15V voltage conversion circuit; the 15V voltage conversion circuit converts the output voltage of the step-down rectification circuit into a-15V voltage to be supplied to the M-bus module; the +15V voltage conversion circuit converts the output voltage of the step-down rectification circuit into +15V voltage to be supplied to the M-Bus module and the 5V voltage conversion circuit; the 5V voltage conversion circuit supplies 5V voltage to the GPRS module MC35i and the 3.3V voltage conversion circuit supplies 3.3V voltage to the ZigBee wireless module HZ20124, the RS485 module and the processor module.
And the GPRS module MC35i is used for communication between the data collector and the monitoring center and is connected with the processor module 6 through a UART 0.
And the M-Bus module is used for communication between the data acquisition device and the M-Bus remote transmission base table and is connected with the processor module through a UART 3.
And the ZigBee wireless communication module HZ20124 is used for realizing the communication between the data acquisition device and the ZigBee remote transmission base meter and is connected with the processor module through the UART 1.
The RS485 module core is an RS485 driver SP3485, is used for realizing the communication between the data acquisition unit and the RS485 remote transmission base table, and is connected with the processor module through a UART 2.
The processor module adopts a processor LPC2368FBD100 of an ARM inner core, the LPC2368FBD100 is used for controlling communication among the M-Bus module, the ZigBee module HZ20124, the RS485 module and the processor module, and collected data are analyzed and processed and then transmitted to a monitoring center through a control GPRS module MC35 i.
The voltage reduction rectifying circuit comprises a transformer T1 and a bridge stack BD 1; the +15V voltage conversion circuit comprises 2 polar capacitors C1 and C6, an inductor L1, a voltage stabilizing diode D1 and a power supply voltage stabilizing chip VR1 LM 2576; the 15V voltage conversion circuit comprises 2 polar capacitors C2 and C4, 2 filter capacitors C3 and C5 and a power management chip VR2 LM 7915; the 5V voltage conversion circuit comprises 2 capacitors, polar capacitors C7 and C8, an inductor L2, a voltage stabilizing diode D2 and a power management chip VR3 LM 2596S; the 3.3V voltage conversion circuit comprises 2 filter capacitors C9 and C12, 2 polar capacitors C10 and C11, a light emitting diode DS1 and a power supply voltage stabilizing chip VR4 SPX 1117-3.3.
The center tap of the transformer T1 with the center tap is grounded, 220V power frequency alternating current voltage is input into the primary coil, and the secondary coil is connected with the alternating current end of the bridge stack BD 1. The anode of the bridge stack BD1 is connected with the +15V voltage conversion circuit, and the cathode of the bridge stack BD1 is connected with the-15V voltage conversion circuit;
the positive electrode of a first polarity capacitor C1 in the +15V voltage conversion circuit is connected with the 1 pin of a power management chip LM2576 and the positive electrode of a bridge stack BD1 in the buck rectification circuit, the negative electrode of the first polarity capacitor C1 is grounded, the 3 pins and the 5 pins of the power management chip LM2576 are grounded, the 4 pin of the power management chip LM2576 is connected with one end of a first inductor L1 and the positive electrode of a second polarity capacitor C6, the 2 pin of the power management chip LM2576 is connected with the other end of a first inductor L1, the cathode of a first voltage stabilizing diode D1 is connected, the anode of the first voltage stabilizing diode D1 is grounded, and the negative electrode of the second polarity capacitor C6 is grounded.
The anode of a third polar capacitor C2 in the 15V voltage conversion circuit and the center tap of a transformer T1 with a center tap in a step-down rectification circuit, one end of a first filter capacitor C3, a GND pin of a power management chip LM7915, the anode of a fourth polar capacitor C4 and one end of a second filter capacitor C5 are grounded, the cathode of a third polar capacitor C2 is connected with the cathode of a bridge stack BD1 in the step-down rectification circuit, the other end of the first filter capacitor C3 is connected with a Vin pin of a power management chip VR2 LM7915, and a Vout pin of the power management chip VR2 LM7915 is connected with the cathode of the fourth polar capacitor C4 and the other end of the second filter capacitor C5.
The positive pole of a fifth polar capacitor C7 in the 5V voltage conversion circuit is connected with the output end of the +15V voltage conversion circuit and the 1 pin of a power management chip VR3 LM2596S, the negative pole of the fifth polar capacitor C7, the 3 pin of the power management chip LM2596S, the 5 pin of the power management chip LM2596S, the anode of a second voltage stabilizing diode D2 and the negative pole of a sixth polar capacitor C8 are grounded, the 4 pin of the power management chip LM2596S is connected with one end of an inductor L2 and the positive pole of the sixth polar capacitor C8, the 2 pin of the power management chip LM25 2596S is connected with the other end of the second inductor L2, and the cathode of the second voltage stabilizing diode D2 is grounded.
One end of a third filter capacitor C9 in the 3.3V voltage conversion circuit is connected with the output end of the 5V voltage conversion circuit, the anode of a seventh polarity capacitor C10 and a pin 3 of the power management chip SPX1117-3.3, the other end of a third filter capacitor C9, the cathode of the seventh polarity capacitor C10, a pin 1 of the power management chip SPX1117-3.3, the cathode of an eighth polarity capacitor C11, the other end of a fourth filter capacitor C12 and the cathode of a light emitting diode DS1 are grounded, and a pin 2 of the power management chip SPX1117-3.3 is connected with the anode of a second polarity capacitor C11, one end of the second filter capacitor C12 and the anode of the light emitting diode DS 1.
The pin 13, the pin 15 and the pin 17 of the ZigBee wireless module HZ2012 are connected with the output end of the 3.3V voltage conversion circuit, the pin 21, the pin 23, the pin 25 and the pin 27 of the ZigBee wireless module HZ2012 are all grounded, the pin 18 of the ZigBee wireless module is connected with the pin 62 of the processor LPC2368FBD100 in the processor module, the pin 20 of the ZigBee wireless module is connected with the pin 63 of the processor LPC2368FBD100 in the processor module, and other pins of the ZigBee wireless module are all suspended.
The RS485 module comprises a driver SP3485, a first resistor R1, a second resistor R2 and a connector J1. The 1 pin of the driver SP3485 is connected with the 49 pin of the processor LPC2368FBD100 in the processor module, the 4 pin of the driver SP3485 is connected with the 48 pin of the processor LPC2368FBD100 in the processor module, the 3 pin of the driver SP3485 is connected with the 46 pin of the processor LPC2368FBD100 in the processor module, the 5 pin of the driver SP3485 is grounded, the 8 pin of the driver SP3485 is connected with one end of the first resistor R1 and the output end of the 3.3V voltage conversion circuit, the 6 pin of the driver SP3485 is connected with the other end of the first resistor R1 and the 1 pin of the connector J1, the 7 pin of the driver SP3485 is connected with one end of the second resistor R2 and the 2 pin of the connector J1, and the other end of the second resistor R2 is grounded.
The GPRS module circuit includes a GPRS module MC35i and a diode D3. Pin 18 of the GPRS module MC35i is connected to pin 99 of the processor LPC2368FBD100 in the processor module, pin 19 of the MC35i is connected to pin 98 of the processor LPC2368FBD100 in the processor module, pins 6, 7, 8, 9 and 10 of the MC35i are all grounded, the anode of the diode D3 is connected to the output of the 5V voltage conversion circuit, the cathode of the diode D3 is connected to pin 13 of the MC35i, and the remaining pins of the MC35i are all floating.
The M-Bus module comprises an RS232 transceiver MAX 3232U 5, 6 capacitors C13, C14, C15, C16, C17 and C18, 11 resistors R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13, 3 diodes D4, D5 and D6, 3 PNP triodes Q1, Q2, Q3, 2 NPN triodes Q4 and Q5, and 1 connector J3.
The processor module adopts a LPC2368FBD100 processor of an ARM core, wherein pins 11, 14, 31, 41, 55, 72, 83 and 97 are all grounded, and pins 10, 12, 13, 28, 42, 54, 71, 84 and 96 are connected with a 3.3V voltage conversion circuit. The other pins are all grounded.
Compared with the prior art, the utility model, have following advantage:
1. supporting a variety of base table communication interfaces. The data acquisition unit comprises interfaces such as RS485, M-Bus, ZigBee wireless communication and the like, supports most remote transmission metering base meters in the market, and provides a wider base meter selection range for users. And the bus is combined with a wireless mode, so that the method is not limited by the space of a deployment place.
2. The data communication capability is strong, and the network coverage is wide. The data acquisition unit realizes communication with a remote monitoring center by adopting a GPRS network, and has the characteristics of low power consumption, low cost and large network capacity.
3. The data processing capacity is strong, and the upgrading potential is large. The data collector adopts an ARM7 kernel high-performance processor, and has strong data processing capacity. And the processor on-chip peripherals are rich, and the method has the characteristic of high upgrading potential.
4. The environmental adaptability of the equipment is strong. All parts of the data acquisition unit adopt devices meeting industrial-grade standards, and factors such as moisture resistance, corrosion resistance and the like are fully considered, so that the system has strong adaptability under severe environmental conditions.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a circuit diagram of a power management module of the present invention;
FIG. 3 is an interface diagram of the ZigBee wireless module in the utility model;
fig. 4 is a circuit diagram of an RS485 module in the present invention;
fig. 5 is a circuit diagram of a GPRS module according to the present invention;
FIG. 6 is a schematic diagram of an M-Bus module according to the present invention;
FIG. 7 is a schematic diagram of a processor module according to the present invention;
fig. 8 is a schematic view of an overall structure according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the utility model discloses a power management module 1, GPRS module MC35i 2, M-Bus module 3, zigBee wireless module HZ20124, RS485 module 5 and processor module 6. Wherein,
the power management module 1 includes: the voltage reduction rectification circuit 1-1 is used for rectifying the input 220V power frequency alternating current into 2 x 18V direct current to be supplied to the-15V voltage conversion circuit 1-2 and the +15V voltage conversion circuit 1-3; the core of the-15V voltage conversion circuit 1-2 is a power supply voltage stabilization chip LM7915, which is used for converting the output voltage of the voltage reduction rectification circuit 1-1 into-15V voltage to be supplied to the M-bus module 3; the core of the +15V voltage conversion circuit 1-3 is a power supply voltage stabilization chip LM2576, which is used for converting the output voltage of the voltage reduction rectification circuit 1-1 into +15V voltage to be supplied to the M-Bus module 3 and the 5V voltage conversion circuit 1-4; the core of the 5V voltage conversion circuit 1-4 is a power supply voltage stabilization chip LM2596S, and the 5V voltage conversion circuit 1-4 supplies 5V voltage to the GPRS module MC35i 2 and the 3.3V voltage conversion circuit 1-5; the core of the 3.3V voltage conversion circuit 1-5 is a power supply voltage stabilization chip SPX1117-3.3, and the 3.3V voltage conversion circuit 1-5 supplies 3.3V voltage to the ZigBee wireless module HZ20124, the RS485 module 5 and the processor module 6.
And the GPRS module MC35i 2 is used for communication between the data collector and the monitoring center and is connected with the processor module 6 through a UART 0.
And the M-Bus module 3 is used for communication between the data acquisition device and the M-Bus remote transmission base table and is connected with the processor module 6 through a UART 3.
And the ZigBee wireless communication module HZ20124 is used for realizing the communication between the data acquisition unit and the ZigBee remote transmission base meter and is connected with the processor module 6 through the UART 1.
The core of the RS485 module 5 is an RS485 driver SP3485, which is used for realizing the communication between the data collector and the RS485 remote transmission base table and is connected with the processor module 6 through UART 2.
The processor module 6 adopts a processor LPC2368FBD100 of an ARM inner core, the LPC2368FBD100 is used for controlling communication among the M-Bus module 3, the ZigBee module HZ20124, the RS485 module 5 and the processor module 6, and collected data are analyzed and processed and then transmitted to a monitoring center through a control GPRS module MC35i 2.
As shown in fig. 2, the power management module includes a buck rectification circuit, a +15V voltage conversion circuit, a-15V voltage conversion circuit, a 5V voltage conversion circuit, and a 3.3V voltage conversion circuit. The voltage reduction rectification circuit comprises a transformer T1 with a center tap and a bridge stack BD1, wherein the transformer T1 with the center tap outputs 2X 18V direct current voltage by inputting 220V power frequency alternating current voltage; the +15V voltage conversion circuit comprises 2 polar capacitors C1 and C6, an inductor L1, a voltage stabilizing diode D1 and a power supply voltage stabilizing chip VR1 LM 2576; the 15V voltage conversion circuit comprises 2 polar capacitors C2 and C4, 2 filter capacitors C3 and C5 and a power management chip VR2 LM 7915; the 5V voltage conversion circuit comprises 2 polar capacitors C7 and C8, an inductor L2, a voltage stabilizing diode D2 and a power management chip VR3 LM 2596S; the 3.3V voltage conversion circuit comprises 2 filter capacitors C9 and C12, 2 polar capacitors C10 and C11, a light emitting diode DS1 and a power supply voltage stabilizing chip VR4 SPX 1117-3.3.
The center tap of the transformer T1 with the center tap is grounded, 220V power frequency alternating current voltage is input into the primary coil, and the secondary coil is connected with the alternating current end of the bridge stack BD 1. The anode of the bridge stack BD1 is connected with the +15V voltage conversion circuit, and the cathode of the bridge stack BD1 is connected with the-15V voltage conversion circuit;
the positive electrode of a first polarity capacitor C1 in the +15V voltage conversion circuit is connected with the 1 pin of a power management chip LM2576 and the positive electrode of a bridge stack BD1 in the buck rectification circuit, the negative electrode of the first polarity capacitor C1 is grounded, the 3 pins and the 5 pins of the power management chip LM2576 are grounded, the 4 pin of the power management chip LM2576 is connected with one end of a first inductor L1 and the positive electrode of a second polarity capacitor C6, the 2 pin of the power management chip LM2576 is connected with the other end of a first inductor L1, the cathode of a first voltage stabilizing diode D1 is connected, the anode of the first voltage stabilizing diode D1 is grounded, and the negative electrode of the second polarity capacitor C6 is grounded.
The anode of a third polar capacitor C2 in the 15V voltage conversion circuit and the center tap of a transformer T1 with a center tap in a step-down rectification circuit, one end of a first filter capacitor C3, a GND pin of a power management chip LM7915, the anode of a fourth polar capacitor C4 and one end of a second filter capacitor C5 are grounded, the cathode of a third polar capacitor C2 is connected with the cathode of a bridge stack BD1 in the step-down rectification circuit, the other end of the first filter capacitor C3 is connected with a Vin pin of a power management chip VR2 LM7915, and a Vout pin of the power management chip VR2 LM7915 is connected with the cathode of the fourth polar capacitor C4 and the other end of the second filter capacitor C5.
The positive pole of a fifth polar capacitor C7 in the 5V voltage conversion circuit is connected with the output end of the +15V voltage conversion circuit and the 1 pin of a power management chip VR3 LM2596S, the negative pole of the fifth polar capacitor C7, the 3 pin of the power management chip LM2596S, the 5 pin of the power management chip LM2596S, the anode of a second voltage stabilizing diode D2 and the negative pole of a sixth polar capacitor C8 are grounded, the 4 pin of the power management chip LM2596S is connected with one end of an inductor L2 and the positive pole of the sixth polar capacitor C8, the 2 pin of the power management chip LM25 2596S is connected with the other end of the second inductor L2, and the cathode of the second voltage stabilizing diode D2 is grounded.
One end of a third filter capacitor C9 in the 3.3V voltage conversion circuit is connected with the output end of the 5V voltage conversion circuit, the anode of a seventh polarity capacitor C10 and a pin 3 of the power management chip SPX1117-3.3, the other end of a third filter capacitor C9, the cathode of the seventh polarity capacitor C10, a pin 1 of the power management chip SPX1117-3.3, the cathode of an eighth polarity capacitor C11, the other end of a fourth filter capacitor C12 and the cathode of a light emitting diode DS1 are grounded, and a pin 2 of the power management chip SPX1117-3.3 is connected with the anode of a second polarity capacitor C11, one end of the second filter capacitor C12 and the anode of the light emitting diode DS 1.
As shown in fig. 3, pins 13, 15 and 17 of the ZigBee wireless module HZ2012 are connected to the output terminal of the 3.3V voltage conversion circuit, pins 21, 23, 25 and 27 of the ZigBee wireless module HZ2012 are all grounded, pin 18 of the ZigBee wireless module is connected to pin 62 of the processor LPC2368FBD100 in the processor module, pin 20 of the ZigBee wireless module is connected to pin 63 of the processor LPC2368FBD100 in the processor module, and the rest pins of the ZigBee wireless module are all suspended.
As shown in fig. 4, the RS485 module includes a driver SP3485, a first resistor R1, a second resistor R2, and a connector J1. The 1 pin of the driver SP3485 is connected with the 49 pin of the processor LPC2368FBD100 in the processor module, the 4 pin of the driver SP3485 is connected with the 48 pin of the processor LPC2368FBD100 in the processor module, the 3 pin of the driver SP3485 is connected with the 46 pin of the processor LPC2368FBD100 in the processor module, the 5 pin of the driver SP3485 is grounded, the 8 pin of the driver SP3485 is connected with one end of the first resistor R1 and the output end of the 3.3V voltage conversion circuit, the 6 pin of the driver SP3485 is connected with the other end of the first resistor R1 and the 1 pin of the connector J1, the 7 pin of the driver SP3485 is connected with one end of the second resistor R2 and the 2 pin of the connector J1, and the other end of the second resistor R2 is grounded.
As shown in fig. 5, the GPRS module circuitry includes a GPRS module MC35i and a diode D3. Pin 18 of the GPRS module MC35i is connected to pin 99 of the processor LPC2368FBD100 in the processor module, pin 19 of the MC35i is connected to pin 98 of the processor LPC2368FBD100 in the processor module, pins 6, 7, 8, 9 and 10 of the MC35i are all grounded, the anode of the diode D3 is connected to the output of the 5V voltage conversion circuit, the cathode of the diode D3 is connected to pin 13 of the MC35i, and the remaining pins of the MC35i are all floating.
As shown in fig. 6, the M-Bus module includes one RS232 transceiver MAX 3232U 5, 6 capacitors C13, C14, C15, C16, C17, C18, 11 resistors R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, 3 diodes D4, D5, D6, 3 PNP triodes Q1, Q2, Q3, 2 NPN triodes Q4, Q5, and 1 connector J3.
Fig. 7 shows the intermediate processor module of the present invention. The processor module adopts a LPC2368FBD100 processor of an ARM core, wherein pins 11, 14, 31, 41, 55, 72, 83 and 97 are all grounded, and pins 10, 12, 13, 28, 42, 54, 71, 84 and 96 are connected with a 3.3V voltage conversion circuit. The other pins are all grounded.
Fig. 8 is a schematic view of an overall structure according to an embodiment of the present invention. A plurality of monitoring subnets 7 are distributed throughout the monitoring building. The monitoring subnet 7 comprises a data collector 8, a remote transmission metering base table 13 connected with the data collector 8 through an RS485 Bus 11, a remote transmission metering base table 14 connected with the data collector 8 through an M-Bus 12, and a remote transmission metering base table 10 connected with the data collector 8 through a ZigBee wireless network 15. The data acquisition unit 8 realizes communication with each energy consumption item metering base meter in a bus or wireless mode, and after analyzing and processing data, the data is transmitted to the monitoring center 17 through the network 16 by using the GPRS module 9 of the data acquisition unit 8. The monitoring center 17 receives and stores the energy consumption data, displays the energy consumption data to the user after analysis and processing, and provides the user with historical energy consumption data inquiry through a data management function.
The utility model discloses a working process does:
the working process of the data acquisition unit which can be used for the large-scale public building energy consumption monitoring system is as follows: the data acquisition unit is controlled by a bus or a ZigBee wireless mode to communicate with each energy consumption item metering base table, the data acquisition unit can transmit the data to a remote monitoring center through a GPRS module after processing the acquired item energy consumption data, and the data acquisition unit can also receive a command sent by the monitoring center through the GPRS module. The monitoring center manages data through a data management function, and can display the data to a user in real time or provide historical data query service.
Claims (1)
1. The utility model provides a data collection station for large-scale public building energy consumption monitoring system, includes power management module, GPRS module MC35i, M-Bus module, zigBee wireless module HZ2012, RS485 module and processor module, its characterized in that:
the power management module includes: the voltage reduction rectification circuit is used for rectifying the input power frequency alternating current into direct current to supply to the-15V voltage conversion circuit and the +15V voltage conversion circuit; the 15V voltage conversion circuit converts the output voltage of the step-down rectification circuit into a-15V voltage to be supplied to the M-bus module; the +15V voltage conversion circuit converts the output voltage of the step-down rectification circuit into +15V voltage to be supplied to the M-Bus module and the 5V voltage conversion circuit; the 5V voltage conversion circuit supplies 5V voltage to the GPRS module MC35i and the 3.3V voltage conversion circuit supplies 3.3V voltage to the ZigBee wireless module HZ20124, the RS485 module and the processor module;
the GPRS module MC35i is used for communication between the data acquisition device and the monitoring center and is connected with the processor module 6 through a UART 0;
the M-Bus module is used for communication between the data acquisition device and the M-Bus remote transmission base table and is connected with the processor module through a UART 3;
the ZigBee wireless communication module HZ20124 is used for realizing the communication between the data acquisition device and the ZigBee remote transmission base meter and is connected with the processor module through the UART 1;
the RS485 module core is an RS485 driver SP3485 which is used for realizing the communication between the data acquisition unit and the RS485 remote transmission base table and is connected with the processor module through a UART 2;
the processor module adopts a processor LPC2368FBD100 of an ARM inner core, the LPC2368FBD100 is used for controlling communication among the M-Bus module, the ZigBee module HZ20124, the RS485 module and the processor module, and collected data are transmitted to a monitoring center through a control GPRS module MC35i after being analyzed and processed;
the voltage reduction rectifying circuit comprises a transformer T1 and a bridge stack BD 1; the +15V voltage conversion circuit comprises 2 polar capacitors C1 and C6, an inductor L1, a voltage stabilizing diode D1 and a power supply voltage stabilizing chip VR1 LM 2576; the 15V voltage conversion circuit comprises 2 polar capacitors C2 and C4, 2 filter capacitors C3 and C5 and a power management chip VR2 LM 7915; the 5V voltage conversion circuit comprises 2 polar capacitors C7 and C8, an inductor L2, a voltage stabilizing diode D2 and a power management chip VR3 LM 2596S; the 3.3V voltage conversion circuit comprises 2 filter capacitors C9 and C12, 2 polar capacitors C10 and C11, a light emitting diode DS1 and a power supply voltage stabilizing chip VR4 SPX 1117-3.3;
the center tap of the transformer T1 with the center tap is grounded, 220V power frequency alternating current voltage is input into the primary coil, the secondary coil is connected with the alternating current end of the bridge stack BD1, the anode of the bridge stack BD1 is connected with the +15V voltage conversion circuit, and the cathode of the bridge stack BD1 is connected with the-15V voltage conversion circuit;
the positive electrode of a first polarity capacitor C1 in the +15V voltage conversion circuit is connected with the positive electrode of a 1 pin of a power management chip LM2576 and the positive electrode of a bridge stack BD1 in the buck rectification circuit, the negative electrode of the first polarity capacitor C1 is grounded, the 3 pins and the 5 pins of the power management chip LM2576 are grounded, the 4 pin of the power management chip LM2576 is connected with one end of a first inductor L1 and the positive electrode of a second polarity capacitor C6, the 2 pin of the power management chip LM2576 is connected with the other end of a first inductor L1, the cathode of a first voltage stabilizing diode D1 is connected, the anode of the first voltage stabilizing diode D1 is grounded, and the negative electrode of the second polarity capacitor C6 is grounded;
the positive pole of a third polar capacitor C2 in the 15V voltage conversion circuit and the center tap of a transformer T1 with the center tap in the step-down rectification circuit, one end of a first filter capacitor C3, the GND pin of a power management chip LM7915, the positive pole of a fourth polar capacitor C4 and one end of a second filter capacitor C5 are grounded, the negative pole of a third polar capacitor C2 is connected with the negative pole of a bridge stack BD1 in the step-down rectification circuit, the other end of the first filter capacitor C3 and the Vin pin of a power management chip VR2 LM7915, and the Vout pin of the power management chip VR2 LM7915 is connected with the negative pole of the fourth polar capacitor C4 and the other end of the second filter capacitor C5;
the positive pole of a fifth polar capacitor C7 in the 5V voltage conversion circuit is connected with the output end of the +15V voltage conversion circuit and the 1 pin of a power management chip VR3 LM2596S, the negative pole of the fifth polar capacitor C7, the 3 pin of the power management chip LM2596S, the 5 pin of the power management chip LM2596S, the anode of a second voltage-stabilizing diode D2 and the negative pole of a sixth polar capacitor C8 are grounded, the 4 pin of the power management chip LM2596S is connected with one end of an inductor L2 and the positive pole of the sixth polar capacitor C8, the 2 pin of the power management chip LM25 2596S is connected with the other end of the second inductor L2, and the cathode of the second voltage-stabilizing diode D2 is grounded;
one end of a third filter capacitor C9 in the 3.3V voltage conversion circuit is connected with the output end of the 5V voltage conversion circuit, the anode of a seventh polarity capacitor C10 and a pin 3 of the power management chip SPX1117-3.3, the other end of a third filter capacitor C9 is connected with the cathode of the seventh polarity capacitor C10, a pin 1 of the power management chip SPX1117-3.3, the cathode of an eighth polarity capacitor C11, the other end of a fourth filter capacitor C12 and the cathode of a light-emitting diode DS1 are grounded, and a pin 2 of the power management chip SPX1117-3.3 is connected with the anode of the second polarity capacitor C11, one end of the second filter capacitor C12 and the anode of the light-emitting diode DS 1;
pins 13, 15 and 17 of the ZigBee wireless module HZ2012 are connected with the output end of the 3.3V voltage conversion circuit, pins 21, 23, 25 and 27 of the ZigBee wireless module HZ2012 are all grounded, pin 18 of the ZigBee wireless module is connected with pin 62 of a processor LPC2368FBD100 in the processor module, pin 20 of the ZigBee wireless module is connected with pin 63 of the processor LPC2368FBD100 in the processor module, and the rest pins of the ZigBee wireless module are all suspended;
the RS485 module comprises a driver SP3485, a first resistor R1, a second resistor R2 and a connector J1, wherein a pin 1 of the driver SP3485 is connected with a pin 49 of a processor LPC2368FBD100 in the processor module, a pin 4 of the driver SP3485 is connected with a pin 48 of the processor LPC2368FBD100 in the processor module, a pin 3 of the driver SP3485 is connected with a pin 46 of the processor LPC2368FBD100 in the processor module, a pin 5 of the driver SP3485 is grounded, a pin 8 of the driver SP3485 is connected with one end of the first resistor R1 and an output end of a 3.3V voltage conversion circuit, a pin 6 of the driver SP3485 is connected with the other end of the first resistor R1 and a pin 1 of the connector J1, a pin 7 of the driver SP3485 is connected with one end of the second resistor R2 and a pin 2 of the connector J1, and the other end of the second resistor R2 is grounded;
the GPRS module circuit comprises a GPRS module MC35i and a diode D3, wherein a pin 18 of the GPRS module MC35i is connected with a pin 99 of a processor LPC2368FBD100 in the processor module, a pin 19 of the MC35i is connected with a pin 98 of the processor LPC2368FBD100 in the processor module, pins 6, 7, 8, 9 and 10 of the MC35i are all grounded, an anode of a diode D3 is connected with an output of the 5V voltage conversion circuit, a cathode of the diode D3 is connected with a pin 13 of the MC35i, and the rest pins of the MC35i are all suspended;
the M-Bus module comprises an RS232 transceiver MAX 3232U 5, 6 capacitors C13, C14, C15, C16, C17 and C18, 11 resistors R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13, 3 diodes D4, D5 and D6, 3 PNP triodes Q1, Q2, Q3, 2 NPN triodes Q4 and Q5, and 1 connector J3;
pin 1 of the RS232 transceiver MAX 3232U 5 is connected to one end of a fifth filter capacitor C13, pin 3 of the MAX3232 is connected to the other end of the fifth filter capacitor C13, pin 4 of the MAX3232 is connected to one end of a sixth filter capacitor C14, pin 5 of the MAX3232 is connected to the other end of the sixth filter capacitor C14, pin 7 of the MAX3232 is connected to one end of a third resistor R3, pin 8 of the MAX3232 is connected to one end of a fourth resistor R4, pin 9 of the MAX3232 is connected to pin 6 of the processor LPC2368FBD100 in the processor module, pin 10 of the MAX3232 is connected to pin 7 of the processor LPC2368FBD100 in the processor module, pin 15 of the MAX3232 is connected to one end of a seventh filter capacitor C15, one end of the eighth filter capacitor C16 is grounded, pin 6 of the MAX3232 is connected to the other end of the seventh filter capacitor C15, pin 2 of the MAX3232 is connected to the other end of the MAX 323V 16, and the output terminal of the filter capacitor C363 is connected to the voltage converting circuit. One end of a ninth filter capacitor C17 is connected with an output section of the +15V voltage conversion circuit, an emitter of a first PNP triode Q1, one end of a fifth resistor R5 and one end of a sixth resistor R6, the other end of the ninth filter capacitor C17 is grounded, a base of the first PNP triode Q1 is connected with the other end of the sixth resistor R6 and a collector of the first NPN triode Q4, a collector of the first PNP triode Q1 is connected with an anode of a fourth diode D6, a base of a second PNP triode Q2 and one end of a seventh resistor R7, a cathode of a fourth diode D6 is connected with an emitter of the second PNP triode Q2 and the other end of the third resistor R3, a collector of the second PNP triode Q2 is connected with the other end of the seventh resistor R7 and an output end of the-15V voltage conversion circuit, the other end of the fourth resistor R4 is connected with an anode of the second diode D4, a base of the third PNP triode Q3 and one end of the eighth resistor R8, the cathode of the second diode D4 is grounded with the emitter of the third PNP triode Q3, the collector of the third PNP triode Q3 is connected with one end of the ninth resistor R9, the other end of the eighth resistor R8 is connected with the output end of the-15V voltage conversion, one end of the tenth resistor R10 is grounded, the other end of the tenth resistor R10 is connected with one end of the eleventh resistor R11 and the base of the second NPN triode Q5, the other end of the eleventh resistor R11 is connected with the anode of the third diode D5, the cathode of the third diode D5 is connected with the output end of the NPN-15V voltage conversion circuit, the collector of the second triode Q5 is connected with the base of the first NPN triode and the other end of the fifth resistor R5, the emitter of the second NPN triode Q5 is connected with the other end of the ninth resistor R9 and one end of the twelfth resistor R12, the other end of the twelfth resistor R12 is connected with the output end of the-15V voltage conversion circuit, an emitter of the first NPN triode Q4 is connected to one end of a thirteenth resistor R13 and a pin 1 of a connector J3, the other end of the thirteenth resistor R13 is connected to a pin 2 of a connector J3 and an output end of the-15V voltage conversion circuit, one end of a tenth filter capacitor C18 is connected to an output end of the-15V voltage conversion circuit, and the other end of the tenth filter capacitor C18 is grounded;
the processor module adopts a LPC2368FBD100 processor of an ARM core, pins 11, 14, 31, 41, 55, 72, 83 and 97 of the FBD are all grounded, pins 10, 12, 13, 28, 42, 54, 71, 84 and 96 are connected with a 3.3V voltage conversion circuit, and the rest pins are all grounded.
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| CN201120412401XU CN202394357U (en) | 2011-10-26 | 2011-10-26 | Data acquisition device for large-scale public building energy consumption monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877856A (en) * | 2016-12-28 | 2017-06-20 | 深圳市展恒电子有限公司 | For the slave station interface arrangement of MBUS |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877856A (en) * | 2016-12-28 | 2017-06-20 | 深圳市展恒电子有限公司 | For the slave station interface arrangement of MBUS |
| CN106877856B (en) * | 2016-12-28 | 2021-02-02 | 深圳市展恒电子有限公司 | Slave station interface device for MBUS |
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