CN211699195U - Power data acquisition system based on NB-IOT technology - Google Patents

Abstract

The utility model discloses an electric power data acquisition system based on NB-IOT technique, this system includes voltage current acquisition circuit, microcontroller, NB-IOT communication circuit and power supply circuit, wherein, voltage current acquisition circuit and NB-IOT communication circuit are connected with microcontroller respectively, power supply circuit is connected to voltage current acquisition circuit respectively, microcontroller and NB-IOT communication circuit provide the electric energy for it, voltage current acquisition circuit is used for gathering the voltage value and the current value that power line flows through, microcontroller is used for handling the voltage value and the current value that voltage current acquisition circuit gathered, NB-IOT communication circuit is used for sending the voltage value and the current value that microcontroller handled to remote server or mobile terminal equipment. The utility model can not only realize the accurate acquisition of the current and the voltage flowing through the power line, but also realize the long-distance transmission, and the utility model also has the advantages of simple installation and implementation, and time cost saving; the manufacturing cost is low, and the use cost is reduced; small volume, no occupation of installation space and the like.

Description

Power data acquisition system based on NB-IOT technology

Technical Field

The utility model relates to an electric power data acquisition technical field, more particularly, the utility model relates to an electric power data acquisition system based on NB-IOT technique.

Background

Nowadays, electric power data acquisition adopts electric power instrument measurement mostly, adopts on-the-spot wiring mode installation, and this kind of mode is higher to the installation controlling part demand, and the mounting means is complicated, especially when the monitoring instrument is add to newly-increased energy monitoring point position, and its installation degree of difficulty can become more complicated, and its data transmission mode is single, can't satisfy the demand of application scenes such as more and more wisdom energy.

With the development of technology, NB-IOT (narrowband internet of things) is an emerging technology in the IOT field, and supports cellular data connection of low-power-consumption devices in a wide area network, also called low-power-consumption wide area network (LPWAN); the NB-IOT supports high-efficiency connection of equipment with long standby time and higher requirement on network connection; the NB-IOT device battery life can be more than 10 years while still providing very comprehensive indoor cellular data connectivity coverage.

In the prior art, a microcontroller is formed by a dsp (digital Signal processing) digital Signal processor, an FPGA (Field-Programmable Gate Array), an mcu (microcontroller unit) system board, an soc (system on a chip) system board, or a plc (Programmable Logic controller) minimum system including I/O, and can complete the functions of a client or a terminal gateway, and can meet the requirement of a discrete data terminal for aggregating data to an NB-IOT network.

Therefore, how to reduce the installation difficulty, improve the data terminal integration level, effectively utilize NB-IOT technology to collect and transmit power data becomes the key point of the problem and research that the technicians in this field need to solve.

SUMMERY OF THE UTILITY MODEL

For solving current on-the-spot electric power data acquisition equipment installation complicated, be unsuitable for utilizing NB-IOT's the unable remote transmission scheduling problem that directly realizes of remote communication link, the utility model discloses creatively provide an electric power data acquisition system based on NB-IOT technique, from the angle of replacing traditional measuring instrument, solve above-mentioned technical problem effectively.

For realizing foretell technical purpose, the utility model discloses an electric power data acquisition system based on NB-IOT technique, this system include voltage current acquisition circuit, microcontroller, NB-IOT communication circuit and power supply circuit, wherein, voltage current acquisition circuit and NB-IOT communication circuit are connected with microcontroller respectively, power supply circuit is connected to voltage current acquisition circuit, microcontroller and NB-IOT communication circuit respectively and provides the electric energy for it, voltage current acquisition circuit is used for gathering the voltage value and the current value that the electric power circuit flows through, microcontroller is used for handling the voltage value and the current value that voltage current acquisition circuit gathered, NB-IOT communication circuit is used for sending the voltage value and the current value that microcontroller handled to remote server or mobile terminal equipment.

Further, the utility model relates to an electric power data acquisition system based on NB-IOT technique, wherein, NB-IOT communication circuit is connected with reset circuit, reset circuit is connected to power supply circuit and acquires the electric energy, reset circuit is used for carrying out the operation that resets to NB-IOT communication circuit.

Further, the utility model relates to an electric power data acquisition system based on NB-IOT technique, wherein, NB-IOT communication circuit still is connected with communication status indicator lamp circuit, communication status indicator lamp circuit is connected to power supply circuit and acquires the electric energy, communication status indicator lamp circuit is used for showing NB-IOT communication circuit and remote server or mobile terminal's communication condition.

Further, the power data acquisition system based on the NB-IOT technology further comprises a voltage and current display circuit, wherein the voltage and current display circuit is respectively connected with the microcontroller and the power supply circuit, and the voltage and current display circuit is used for displaying the voltage value and the current value acquired by the voltage and current acquisition circuit.

Further, an electric power data acquisition system based on NB-IOT technique, wherein, microcontroller includes the singlechip that the model is AT89C51, singlechip XTAL1 pin and XTAL2 pin are established ties there is crystal oscillator X2, singlechip RST pin and EA pin are established ties there is reset button K2, reset button K2 is connected with power supply circuit output after parallelly connected condenser C3.

Further, the electric power data acquisition system based on the NB-IOT technology comprises a voltage acquisition circuit, a current acquisition circuit and an analog-to-digital converter with the model of ADC0808, wherein the voltage acquisition circuit comprises a voltage acquisition circuit, a current acquisition circuit and an analog-to-digital converter, the analog-to-digital converter comprises an OUT1 pin, an OUT2 pin, an OUT3 pin, an OUT4 pin, an OUT5 pin and an OUT6 pin which are correspondingly connected with a P2.7/A15 pin, a P2.6/A14 pin, a P2.5/A13 pin, a P2.4/A12 pin, a P2.3/A11 pin and a P2.2/A10 pin of a single chip microcomputer, a CLOCK pin is connected with a P3.2/INT0 pin of the single chip microcomputer, an EOC pin is connected with a P3.3/INT1 pin of the single chip microcomputer, a START pin and an ALE pin are both connected with a P3.4/T0 pin, and a VREF + pin; the voltage acquisition circuit comprises a resistor R5 and a resistor R6, one end of the resistor R5 is connected with a live wire of a power line, the other end of the resistor R5 is respectively connected with one end of the resistor R6 and an IN2 pin of the analog-to-digital converter, and the other end of the resistor R6 is connected with a zero wire of the power line; the current acquisition circuit comprises a resistor R7, one end of the resistor R7 is connected with a live wire of a power line, and the other end of the resistor R7 is connected with the anode of electric equipment; the two ends of the resistor R7 are also connected to the pins IN0 and IN1 of the analog-to-digital converter, respectively.

Further, the NB-IOT communication circuit comprises an NB-IOT communication module with the model of BC95, a SIM card seat, an electrostatic protection chip with the model of SMF05C and an antenna, wherein a VBAT pin of the NB-IOT communication module is connected with the output end of the power supply circuit, a GND pin of the NB-IOT communication module is grounded, an RXD pin of the NB-IOT communication module is connected to a P3.0/RXD pin of the singlechip, and a TXD pin of the NB-IOT communication module is connected to a P3.1/TXD pin of the singlechip; the VCC pin of the SIM card holder is connected with the USM _ VDD pin of the NB-IOT communication module, the RESET pin of the SIM card holder is connected with a resistor R12, and the other end of the resistor R12 is connected with the USM _ RST pin of the NB-IOT communication module; the CLK pin of the SIM card holder is connected with a resistor R13, and the other end of the resistor R13 is connected with the USM _ CLK pin of the NB-IOT communication module; a GND pin of the SIM card seat is connected with a USM _ GND pin of the NB-IOT communication module; the IO pin of the SIM card holder is connected with a resistor R14 and a resistor R15, the other end of the resistor R14 is connected with the NB-IOT communication module USM _ VDD pin, and the other end of the resistor R15 is connected with the NB-IOT communication module USM _ DATA pin; pins 3, 4 and 5 of the electrostatic protection chip are correspondingly connected with pins CLK, REST and VCC of the SIM card holder one by one, a pin 6 of the electrostatic protection chip is connected to the common end of a resistor R15 and a resistor R15, and a pin 2 of the electrostatic protection chip is grounded; the pin of the NB-IOT communication module RF _ ANT is connected with a resistor R16 and a capacitor C7, the other end of the resistor R16 is connected with an antenna and a capacitor C8, and the other end of the capacitor C7 and the other end of the capacitor C8 are both grounded.

Further, the RESET circuit comprises a manual RESET switch K1 and a voltage monitor with a model of MAX809SD/RD, a VCC pin of the voltage monitor is connected with an output end of the power supply circuit, a RST pin of the voltage monitor is connected with a RESET pin of the NB-IOT communication module, a bidirectional trigger diode D1 capacitor C9 and a manual RESET switch K1 are connected in parallel between a RST pin of the voltage monitor and a GND pin of the voltage monitor, one end of each of the bidirectional trigger diode D1 capacitor C9, the manual RESET switch K1 and the GND pin of the voltage monitor is grounded, one branch of the bidirectional trigger diode D1 capacitor C9 and the manual RESET switch K1, one end of the RST pin of the voltage monitor, is connected with the RESET pin of the NB-IOT communication module, and the other branch is connected with the output end of the power supply circuit through a resistor R17.

Further, the power data acquisition system based on the NB-IOT technology is characterized in that the communication state indicator lamp circuit comprises a network state indicator lamp circuit and a short message state indicator lamp circuit, the network state indicator lamp circuit comprises a triode Q1 and a light emitting diode D3, a collector of the triode Q1 is connected with a negative electrode of the light emitting diode D3, an emitter of the triode Q3 is grounded, a base of the triode Q1 is connected with an RI pin of the NB-IOT communication module, an anode of the light emitting diode D3 is connected with a resistor R2, and the other end of the resistor R2 is connected with an output end of the power circuit; the short message state indicating lamp circuit comprises a triode Q2 and a light emitting diode D4, wherein a collector of the triode Q2 is connected with a negative electrode of the light emitting diode D4, an emitter of the triode Q2 is grounded, a base of the triode Q2 is connected with an NB-IOT communication module NETLIGHT pin, a positive electrode of the light emitting diode D4 is connected with a resistor R19, and the other end of the resistor R19 is connected with an output end of the power circuit.

Further, the power data acquisition system based on the NB-IOT technology is characterized in that the voltage and current display circuit comprises a liquid crystal module with the model of LM016L, a potentiometer RV1 and a resistor bank with the model of RESPACK-8, wherein a pin of the potentiometer 1 is connected with the output end of the power supply circuit, a pin of the potentiometer 1 is connected with a pin of a VEE of the liquid crystal module, and a pin of the potentiometer 3 is grounded; the pin of the liquid crystal module VDD is connected with the output end of the power supply circuit, the pin of the liquid crystal module RS is connected with the pin of the singlechip P3.5/T1, the pin of the liquid crystal module RW is connected with the pin of the singlechip P3.6/WR, the pin of the liquid crystal module E is connected with the pin of the singlechip P3.7/RD, the pin of the liquid crystal module D0, the pin of the liquid crystal module D1, the pin of the liquid crystal module D2, the pin of the liquid crystal module D3, the pin of the liquid crystal module D4, the pin of the liquid crystal module D5, the pin of the liquid crystal module D6, the pin of the liquid crystal module D7 are correspondingly connected with the pin of the singlechip P0.0/AD0, the pin of the liquid crystal module P0.1/AD1, the pin of the liquid crystal module P0.2/AD2, the pin of the liquid crystal module; the pin 1 of the resistor pack is connected with the output end of the power supply circuit, and the pins 2, 3, 4, 5, 6, 7, 8 and 9 of the resistor pack are also correspondingly connected with the pins P0.0/AD0, P0.1/AD1, P0.2/AD2, P0.3/AD3, P0.4/AD4, P0.5/AD5, P0.6/AD6 and P0.7/AD7 of the singlechip.

The utility model has the advantages that: the utility model discloses make microcontroller in reducing configuration quantity, concentrate each part configuration, reduced the utility model discloses installation space has been saved to holistic volume, and the installation of modularization has reduced the installation degree of difficulty for the data payload of NB-IOT communication circuit's distal end link reduces the system overhead, becomes the link that assembles of terminal department, effectively realizes the teletransmission of data. Meanwhile, the utility model realizes the accurate acquisition of the voltage and current flowing through the power line by utilizing the NB-IOT technology and matching with the voltage and current acquisition circuit; the NB-IOT communication circuit is utilized to transmit the voltage value and the current value flowing through the power line to a remote server or a mobile terminal device, so that remote transmission is realized; the NB-IOT communication circuit is manually and automatically reset by using the reset circuit, so that the field maintenance is facilitated, and the automation degree of the system is improved; the communication state indicating lamp circuit can be used for checking two communication states of the NB-IOT communication circuit in real time; utilize voltage electric current display circuit can look over the magnitude of voltage and the current value of flowing through power line at the installation scene, to sum up the utility model has the advantages of still having the function comprehensive when simple installation, the scene and the remote monitoring of being convenient for more can adapt to various scene demands, have improved user experience. And the utility model discloses the cost is lower, more is favorable to popularizing and applying.

Drawings

Fig. 1 is a block diagram of a power data acquisition system based on NB-IOT technology according to the present invention;

fig. 2 is a schematic diagram of a circuit structure of a power data acquisition system based on NB-IOT technology of the present invention;

fig. 3 is a schematic diagram of an NB-IOT communication circuit structure of the present invention;

fig. 4 is a schematic diagram of the circuit structure of the communication status indicator lamp of the present invention;

fig. 5 is a schematic diagram of the reset circuit structure of the present invention;

fig. 6 is a schematic diagram of the power circuit structure of the present invention.

In the figure, the position of the upper end of the main shaft,

01. a voltage current acquisition circuit; 02. a microcontroller; 03. an NB-IOT communication circuit; 04. a power supply circuit; 05. a reset circuit; 06. a communication status indicator light circuit; 07. and a voltage-current display circuit.

Detailed Description

The power data acquisition system based on NB-IOT technology of the present invention will be explained and explained in detail with reference to the drawings.

As shown in fig. 1-6, the utility model discloses an electric power data acquisition system based on NB-IOT technique, this system includes voltage current acquisition circuit 01, microcontroller 02, NB-IOT communication circuit 03 and power supply circuit 04, wherein, voltage current acquisition circuit 01 and NB-IOT communication circuit 03 are connected with microcontroller 02 respectively, power supply circuit 04 is connected to voltage current acquisition circuit 01 respectively, microcontroller 02 and NB-IOT communication circuit 03 provide the electric energy for it, voltage current acquisition circuit 01 is used for gathering the voltage value and the current value that power line flows through, microcontroller 02 is used for handling the voltage value and the current value that voltage current acquisition circuit 01 gathered, NB-IOT communication circuit 03 is used for sending the voltage value and the current value that microcontroller 02 handled to remote server or mobile terminal equipment. The NB-IOT communication circuit is connected with a reset circuit 05, the reset circuit 05 is connected to the power supply circuit 04 to obtain electric energy, and the reset circuit 05 is used for resetting the NB-IOT communication circuit 03. The NB-IOT communication circuit 03 is further connected with a communication state indicating lamp circuit 06, the communication state indicating lamp circuit 06 is connected to the power supply circuit 04 to obtain electric energy, and the communication state indicating lamp circuit 06 is used for displaying the communication condition of the NB-IOT communication circuit 03 and a remote server or mobile terminal device. The utility model discloses still include voltage electric current display circuit 07, voltage electric current display circuit 07 is connected with microcontroller 02 and power supply circuit 04 respectively, and voltage electric current display circuit 07 is used for showing the magnitude of voltage and the current value that voltage electric current acquisition circuit 01 gathered.

The utility model enables the microcontroller to intensively configure each part, reduces the overall volume of the utility model, saves the installation space, reduces the installation difficulty due to modularized installation, needs only a voltage and current acquisition circuit connected with an external line to be detected during installation, and solves the problem that the traditional measuring instrument needs to change the wiring, routing, whole line and other complex operations when a monitoring unit is added; the data effective load of the remote link of the NB-IOT communication circuit is reduced, the system overhead is reduced, the remote transmission of data is effectively realized, and the aggregation link at the terminal is formed. The utility model discloses utilize NB-IOT technique to cooperate voltage current acquisition circuit to realize the accurate acquisition to the voltage and the electric current that flow through the power line simultaneously; the NB-IOT communication circuit is utilized to transmit the voltage value and the current value flowing through the power line to a remote server or a mobile terminal device, so that remote transmission is realized; the NB-IOT communication circuit is manually and automatically reset by utilizing the reset circuit, so that the field maintenance and automation are convenient to improve; the communication state indicating lamp circuit can be used for checking two communication states of the NB-IOT communication circuit in real time; the voltage and current value of the power line can be checked on the installation site by using the voltage and current display circuit, and the utility model has comprehensive functions; the on-site and remote monitoring is convenient; the installation and implementation are simple and convenient, and the time cost is saved; the manufacturing cost is low, and the use cost is reduced; small volume, no occupation of installation space and the like.

As shown in fig. 6, in order to guarantee the utility model discloses electric energy supply's stability, including the model for the stabiliser of MIC29302WU in power supply circuit 04, its output can export stable 4.2V direct current voltage to satisfy voltage electric current acquisition circuit 01, microcontroller 02, NB-IOT communication circuit 03, reset circuit 05, communication pile body pilot lamp circuit 06 and voltage electric current display circuit 07's user demand.

As shown in fig. 1 and 2, in order to improve the utility model discloses a performance, the utility model discloses a low voltage of american ATMEL company production, high performance CMOS8 bit singlechip, specifically speaking: microcontroller 02 model is AT89C 51's singlechip, and singlechip XTAL1 pin and XTAL2 pin are established ties and are had crystal oscillator X2, and singlechip RST pin and EA pin are established ties and are had reset button K2, and reset button K2 is connected with power supply circuit 04 output after parallelly connected condenser C3.

As shown in fig. 1 and 2, in order to reduce cost, reduce the volume, it is simple and convenient to realize, the utility model provides a voltage current acquisition circuit 01 includes that voltage acquisition circuit, current acquisition circuit and model are ADC 0808's analog-to-digital converter, and three concrete connection is as follows: an OUT1 pin, an OUT2 pin, an OUT3 pin, an OUT4 pin, an OUT5 pin, an OUT6 pin are correspondingly connected with a P2.7/A15 pin, a P2.6/A14 pin, a P2.5/A13 pin, a P2.4/A12 pin, a P2.3/A11 pin and a P2.2/A10 pin of a single chip microcomputer, an analog-to-digital converter CLOCK pin is connected with a P3.2/0 pin of the single chip microcomputer, an analog-to-digital converter EOC pin is connected with a P3.3/INT1 pin of the single chip microcomputer, an analog-to-digital converter START pin and an ALE pin are both connected with a P3.4/T0 pin of the single chip microcomputer, and an analog-to-digital converter VREF + pin is connected with an output; the voltage acquisition circuit comprises a resistor R5 and a resistor R6, one end of the resistor R5 is connected with a live wire of a power line, the other end of the resistor R3526 is connected with one end of a resistor R6 and an IN2 pin respectively, the other end of the resistor R6 is connected with a zero line of the power line, the resistors are connected IN series to divide voltage to acquire the voltage of the power line, and the circuit is simple, low IN cost and small IN size; the current acquisition circuit comprises a resistor R7, one end of the resistor R7 is connected with a live wire of the power line, and the other end of the resistor R7 is connected with the anode of the electric equipment; the two ends of the resistor R7 are respectively connected with an IN0 pin and an IN1 pin of the analog-to-digital converter, the resistor is used for collecting the current of the power line IN series, and the circuit is simple, low IN cost and small IN size; the above collection is limited to the case of low voltage of the power line, and generally does not exceed 380V. If the voltage of the power line and the current flowing through the power line are high, a current transformer (not shown in the figure) may be added to the current collecting circuit, and the specific connection manner is as follows: the live wire of the power line passes through the current collecting hole of the current transformer, and two ends of the current transformer are respectively connected with an IN0 pin and an IN1 pin of the analog-to-digital converter.

As shown in fig. 1, 2 and 3, the NB-IOT communication circuit 03 includes an NB-IOT communication module with a model BC95, a SIM card socket, an electrostatic protection chip with a model SMF05C, and an antenna, and the specific connection manner is as follows: a VBAT pin of the NB-IOT communication module is connected with the output end of the power supply circuit 04, a GND pin of the NB-IOT communication module is grounded, an RXD pin of the NB-IOT communication module is connected to a P3.0/RXD pin of the single chip microcomputer, and a TXD pin of the NB-IOT communication module is connected to a P3.1/TXD pin of the single chip microcomputer; a VCC pin of the SIM card holder is connected with a USM _ VDD pin of the NB-IOT communication module, a RESET pin of the SIM card holder is connected with a resistor R12, and the other end of the resistor R12 is connected with a USM _ RST pin of the NB-IOT communication module; the CLK pin of the SIM card holder is connected with a resistor R13, and the other end of the resistor R13 is connected with the USM _ CLK pin of the NB-IOT communication module; a GND pin of the SIM card seat is connected with a USM _ GND pin of the NB-IOT communication module; the IO pin of the SIM card holder is connected with a resistor R14 and a resistor R15, the other end of the resistor R14 is connected with the NB-IOT communication module USM _ VDD pin, and the other end of the resistor R15 is connected with the NB-IOT communication module USM _ DATA pin; pins 3, 4 and 5 of the electrostatic protection chip are correspondingly connected with pins CLK, REST and VCC of the SIM card holder one by one, a pin 6 of the electrostatic protection chip is connected to the common end of a resistor R15 and a resistor R15, and a pin 2 of the electrostatic protection chip is grounded; the pin of the NB-IOT communication module RF _ ANT is connected with a resistor R16 and a capacitor C7, the other end of the resistor R16 is connected with an antenna and a capacitor C8, the other end of the capacitor C7 and the other end of the capacitor C8 are grounded, and the electrostatic protection chip protects the NB-IOT communication module and the SIM card holder from damage caused by transient events caused by other voltages such as electrostatic discharge or latch.

As shown in fig. 1, 2, 3 and 5, the utility model provides two reset modes to ensure the stability of the system operation, specifically speaking: the RESET circuit 05 comprises a manual RESET switch K1 and a voltage monitor with a model number MAX809SD/RD, a VCC pin of the voltage monitor is connected with an output end of the power supply circuit 04, a RST pin of the voltage monitor is connected with a RESET pin of the NB-IOT communication module, a diode D1 capacitor C9 and a manual RESET switch K1 are connected between the RST pin of the voltage monitor and the GND pin of the voltage monitor in parallel, a diode D1 capacitor C9 and a manual RESET switch K1 are grounded at one end of the GND pin of the voltage monitor, a diode D1 capacitor C9 and a manual RESET switch K1 of the bidirectional trigger are connected with the RESET pin of the NB-IOT communication module at one end of the RST pin, and the other branch is connected with the output end of the power supply circuit 04 through a resistor R17, the voltage monitor automatically resets the NB-IOT communication module when the output voltage of the power circuit 04 is lower than the set voltage.

As shown in fig. 1, 2, 3, and 4, the communication status indicator circuit 06 includes two prompts, namely, the network status indicator circuit prompts the remote device to operate, and the short message status indicator circuit prompts the mobile terminal to operate by short message. The network state indicating lamp circuit comprises a triode Q1 and a light emitting diode D3, wherein a collector of the triode Q1 is connected with a negative electrode of the light emitting diode D3, an emitter of the triode Q1 is grounded, a base of the triode Q1 is connected with an RI pin of the NB-IOT communication module, a positive electrode of the light emitting diode D3 is connected with a resistor R2, and the other end of the resistor R2 is connected with an output end of the power circuit 04; the short message state indicating lamp circuit comprises a triode Q2 and a light emitting diode D4, a collector of the triode Q2 is connected with a cathode of the light emitting diode D4, an emitter of the triode Q2 is grounded, a base of the triode Q2 is connected with an NB-IOT communication module NETLIGHT pin, an anode of the light emitting diode D4 is connected with a resistor R19, the other end of the resistor R19 is connected with an output end of a power circuit 04, the light emitting diode D3 flashes when a remote server or a mobile terminal carries out communication, and the light emitting diode D4 flashes when a communication card in an SIM IC card holder 5 receives a short message, so that the running state of the equipment can be conveniently obtained.

As shown in fig. 1 and 2, in order to facilitate the on-site personnel to check the current value and the voltage value of the power line, the utility model discloses medium voltage and current display circuit 07 specifically includes the liquid crystal module, potentiometer RV1 that the model is LM016L and the exclusion that the model is RESPACK-8, and its specific connection puts the formula and is: a pin of the potentiometer 1 is connected with the output end of the power supply circuit 04, a pin of the potentiometer 1 is connected with a pin VEE of the liquid crystal module, a pin of the potentiometer 3 is grounded, and the display brightness of the liquid crystal module can be adjusted by adjusting the position of the pin of the potentiometer 2; a VDD pin of the liquid crystal module is connected with an output end of the power circuit 04, a RS pin of the liquid crystal module is connected with a P3.5/T1 pin of the singlechip, a RW pin of the liquid crystal module is connected with a P3.6/WR pin of the singlechip, an E pin of the liquid crystal module is connected with a P3.7/RD pin of the singlechip, a D0 pin, a D1 pin, a D2 pin, a D3 pin, a D4 pin, a D5 pin, a D6 pin, a D7 pin is connected with a P0.0/AD0 pin, a P0.1/AD1 pin, a P0.2/AD2 pin, a P0.3/AD3 pin, a P0.4/AD4 pin, a P0.5/AD5 pin, a P0.6/AD6 pin and a P0.7/AD7 pin in a one-to one correspondence; pins 1 of the resistor bank are connected with an output end of the power supply circuit 04, and pins 2, 3, 4, 5, 6, 7, 8 and 9 of the resistor bank are also correspondingly connected with pins P0.0/AD0, P0.1/AD1, P0.2/AD2, P0.3/AD3, P0.4/AD4, P0.5/AD5, P0.6/AD6 and P0.7/AD7 of the singlechip.

Furthermore, in the present disclosure, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A power data acquisition system based on NB-IOT technique which characterized in that: the system comprises a voltage and current acquisition circuit (01), a microcontroller (02), an NB-IOT communication circuit (03) and a power supply circuit (04), wherein the voltage and current acquisition circuit (01) and the NB-IOT communication circuit (03) are respectively connected with the microcontroller (02), the power supply circuit (04) is respectively connected to the voltage and current acquisition circuit (01), the microcontroller (02) and the NB-IOT communication circuit (03) to provide electric energy for the circuit, the voltage and current acquisition circuit (01) is used for acquiring the voltage value and the current value flowing through the power line, the microcontroller (02) is used for processing the voltage value and the current value acquired by the voltage and current acquisition circuit (01), the NB-IOT communication circuit (03) is used for transmitting the voltage value and the current value processed by the microcontroller (02) to a remote server or a mobile terminal device.

2. The NB-IOT technology-based power data collection system of claim 1, wherein: the NB-IOT communication circuit is connected with a reset circuit (05), the reset circuit (05) is connected to a power supply circuit (04) to obtain electric energy, and the reset circuit (05) is used for resetting the NB-IOT communication circuit (03).

3. The NB-IOT technology-based power data collection system of claim 2, wherein: the NB-IOT communication circuit (03) is further connected with a communication state indicating lamp circuit (06), the communication state indicating lamp circuit (06) is connected to a power supply circuit (04) to obtain electric energy, and the communication state indicating lamp circuit (06) is used for displaying the communication condition of the NB-IOT communication circuit (03) and a remote server or a mobile terminal device.

4. A power data collection system based on NB-IOT technology according to any of claims 1-3, wherein: the voltage and current display circuit is characterized by further comprising a voltage and current display circuit (07), wherein the voltage and current display circuit (07) is respectively connected with the microcontroller (02) and the power circuit (04), and the voltage and current display circuit (07) is used for displaying the voltage value and the current value collected by the voltage and current collecting circuit (01).

5. The NB-IOT technology-based power data collection system of claim 4, wherein: the microcontroller (02) comprises a single chip microcomputer with the model number of AT89C51, an XTAL1 pin and an XTAL2 pin of the single chip microcomputer are connected with a crystal oscillator X2 in series, a RST pin and an EA pin of the single chip microcomputer are connected with a reset button K2 in series, and the reset button K2 is connected with a capacitor C3 in parallel and then connected with the output end of the power supply circuit (04).

6. The NB-IOT technology-based power data collection system of claim 5, wherein: the voltage and current acquisition circuit (01) comprises a voltage acquisition circuit, a current acquisition circuit and an analog-to-digital converter with the model of ADC0808, wherein pins of OUT1, OUT2, OUT3, OUT4, OUT5 and OUT6 of the analog-to-digital converter are correspondingly connected with pins of P2.7/A15, P2.6/A14, P2.5/A13, P2.4/A12, P2.3/A11 and P2.2/A10 of the single chip microcomputer one by one, a CLOCK pin of the analog-to-digital converter is connected with a P3.2/INT0 pin of the single chip microcomputer, an EOC pin of the analog-to-digital converter is connected with a P3.3/INT1 pin of the single chip microcomputer, a START pin and an ALE pin of the analog-to-digital converter are both connected with a P3.4/T0 pin of the single chip microcomputer, and a VREF + pin of the analog-to; the voltage acquisition circuit comprises a resistor R5 and a resistor R6, one end of the resistor R5 is connected with a live wire of a power line, the other end of the resistor R5 is respectively connected with one end of the resistor R6 and an IN2 pin of the analog-to-digital converter, and the other end of the resistor R6 is connected with a zero wire of the power line; the current acquisition circuit comprises a resistor R7, one end of the resistor R7 is connected with a live wire of a power line, and the other end of the resistor R7 is connected with the anode of electric equipment; the two ends of the resistor R7 are also connected to the pins IN0 and IN1 of the analog-to-digital converter, respectively.

7. The NB-IOT technology-based power data collection system of claim 6, wherein: the NB-IOT communication circuit (03) comprises an NB-IOT communication module with the model of BC95, a SIM card seat, an electrostatic protection chip with the model of SMF05C and an antenna, a VBAT pin of the NB-IOT communication module is connected with the output end of the power circuit (04), a GND pin of the NB-IOT communication module is grounded, an RXD pin of the NB-IOT communication module is connected to a P3.0/RXD pin of the singlechip, and a TXD pin of the NB-IOT communication module is connected to a P3.1/TXD pin of the singlechip; the VCC pin of the SIM card holder is connected with the USM _ VDD pin of the NB-IOT communication module, the RESET pin of the SIM card holder is connected with a resistor R12, and the other end of the resistor R12 is connected with the USM _ RST pin of the NB-IOT communication module; the CLK pin of the SIM card holder is connected with a resistor R13, and the other end of the resistor R13 is connected with the USM _ CLK pin of the NB-IOT communication module; a GND pin of the SIM card seat is connected with a USM _ GND pin of the NB-IOT communication module; the IO pin of the SIM card holder is connected with a resistor R14 and a resistor R15, the other end of the resistor R14 is connected with the NB-IOT communication module USM _ VDD pin, and the other end of the resistor R15 is connected with the NB-IOT communication module USM _ DATA pin; pins 3, 4 and 5 of the electrostatic protection chip are correspondingly connected with pins CLK, REST and VCC of the SIM card holder one by one, a pin 6 of the electrostatic protection chip is connected to the common end of a resistor R15 and a resistor R15, and a pin 2 of the electrostatic protection chip is grounded; the pin of the NB-IOT communication module RF _ ANT is connected with a resistor R16 and a capacitor C7, the other end of the resistor R16 is connected with an antenna and a capacitor C8, and the other end of the capacitor C7 and the other end of the capacitor C8 are both grounded.

8. The NB-IOT technology-based power data collection system of claim 2, wherein: the RESET circuit (05) comprises a manual RESET switch K1 and a voltage monitor with the model of MAX809SD/RD, a VCC pin of the voltage monitor is connected with the output end of the power supply circuit (04), a RST pin of the voltage monitor is connected with a RESET pin of the NB-IOT communication module, a diode D1 capacitor C9 and a manual RESET switch K1 are connected between the RST pin of the voltage monitor and the GND pin of the voltage monitor in parallel, the diode D1 capacitor C9 and the manual RESET switch K1 are grounded at one end of the GND pin of the voltage monitor, a capacitor C9 and a manual RESET switch D1 capacitor C1 are connected with the RESET pin of the NB-IOT communication module at one end of the RST pin, and the other branch is connected with the output end of the power supply circuit (04) through a resistor R17.

9. The NB-IOT technology-based power data collection system of claim 3, wherein: the communication state indicating lamp circuit (06) comprises a network state indicating lamp circuit and a short message state indicating lamp circuit, the network state indicating lamp circuit comprises a triode Q1 and a light emitting diode D3, a collector of the triode Q1 is connected with a negative electrode of the light emitting diode D3, an emitter of the triode Q3 is grounded, a base of the triode Q1 is connected with an NB-IOT communication module RI pin, a positive electrode of the light emitting diode D3 is connected with a resistor R2, and the other end of the resistor R2 is connected with an output end of a power supply circuit (04); the short message state indicating lamp circuit comprises a triode Q2 and a light emitting diode D4, wherein a collector of the triode Q2 is connected with a negative electrode of the light emitting diode D4, an emitter of the triode Q2 is grounded, a base of the triode Q2 is connected with an NB-IOT communication module NETLIGHT pin, a positive electrode of the light emitting diode D4 is connected with a resistor R19, and the other end of the resistor R19 is connected with an output end of a power circuit (04).

10. The NB-IOT technology-based power data collection system of claim 4, wherein: the voltage and current display circuit (07) comprises a liquid crystal module with the model number LM016L, a potentiometer RV1 and a resistor bank with the model number RESPACK-8, wherein a pin of the potentiometer 1 is connected with the output end of the power circuit (04), a pin of the potentiometer 1 is connected with a pin of a VEE of the liquid crystal module, and a pin of the potentiometer 3 is grounded; the pin of the liquid crystal module VDD is connected with the output end of the power supply circuit (04), the pin of the liquid crystal module RS is connected with the pin of the singlechip P3.5/T1, the pin of the liquid crystal module RW is connected with the pin of the singlechip P3.6/WR, the pin of the liquid crystal module E is connected with the pin of the singlechip P3.7/RD, the pin of the liquid crystal module D0, the pin of the liquid crystal module D1, the pin of the liquid crystal module D2, the pin of the liquid crystal module D3, the pin of the liquid crystal module D4, the pin of the liquid crystal module D5, the pin of the liquid crystal module D6 and the pin of the liquid crystal module D7 are connected with the pin of the singlechip P0.0/AD0, the pin of the liquid crystal module P0.1/AD1, the pin of the liquid crystal module P0.2/AD2, the pin of the liquid crystal module P0.; the pin 1 of the resistor pack is connected with the output end of the power supply circuit (04), and the pins 2, 3, 4, 5, 6, 7, 8 and 9 of the resistor pack are also correspondingly connected with the pins P0.0/AD0, P0.1/AD1, P0.2/AD2, P0.3/AD3, P0.4/AD4, P0.5/AD5, P0.6/AD6 and P0.7/AD7 of the singlechip one by one.

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