CN211319375U

CN211319375U - LORA-based energy metering data online acquisition device

Info

Publication number: CN211319375U
Application number: CN201921881778.2U
Authority: CN
Inventors: 赵勇; 王青亚; 沈静; 刘乙鑫; 方甜甜; 吕俊杰
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-08-21
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses an energy metering data online collection station based on LORA has solved traditional ammeter mode of checking meter and has met huge difficulty, and traditional ammeter not only lays wire complicatedly, needs a large amount of manpowers when checking meter moreover, and its power consumption safety also can't obtain the problem of guarantee. The utility model discloses a mascerating machine, PC end, wireless transmission module and electric energy module etc. The utility model discloses an use the ammeter that need not go a large amount of manual works to one family of family manual meter reading, realize the measurement and the demonstration of electric quantity, super power auto-power-off, regularly open and close, have the memory function to utilize the LORA chip to convey data to the PC in real time, realize long-range checking meter.

Description

LORA-based energy metering data online acquisition device

Technical Field

The utility model relates to an ammeter electric quantity measurement instrument, concretely relates to energy measurement data on-line collection station based on LORA.

Background

The electric power is an important energy source for the production development and the life of people in the current society, and along with the progress of the society, the demand of people on the electric power is more and more great, and especially the demand of household electricity is particularly outstanding. The modern society is densely populated, and the population density of urban residential buildings is improved, so that the traditional electric meter reading mode has great difficulty. The traditional electric meter is complex in wiring, a large amount of manpower is needed during meter reading, and the electricity utilization safety of the traditional electric meter cannot be guaranteed. Therefore, an electric meter which can accurately measure the electricity consumption and does not need to be manually read by one user is urgently needed.

In the prior art, in the process that a wireless communication module sends data of a singlechip to a PC (personal computer) end in a wireless mode, the working frequency Band of NRF2401 (monolithic radio frequency transceiver chip) is 2.4-2.5 GHz ISM frequency Band, the wireless transmission coverage is small, usually only 2-5 m, and NB-IOT (Narrow-Band Internet of Things) has the advantages of wide coverage, low power consumption, Narrow bandwidth and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the traditional ammeter mode of checking meter has met huge difficulty, and traditional ammeter not only wiring is complicated, needs a large amount of manpowers when checking meter moreover, and its power consumption safety also can't be ensured. The utility model provides a solve an energy measurement data on-line collection station based on LORA of above-mentioned problem.

The method selects a LORA (Long Range Radio) mode to transmit wireless data, the LORA adopts a low-power local area network wireless standard, the LORA is one of LPWAN communication technologies, the LORA mainly operates in global free frequency bands of 433, 868, 915MHz and the like, and the method has the advantages of low cost, lowest power consumption, small use cost, moderate transmission distance and the like, and is suitable for the use environment of the intelligent electric meter.

The utility model discloses a following technical scheme realizes:

an LORA-based energy metering data online acquisition device comprises a single chip microcomputer, a PC (personal computer) terminal, a wireless transmission module and an electric energy module, wherein the wireless transmission module transmits data of the single chip microcomputer to the PC terminal in a wireless transmission mode, and the data of the single chip microcomputer comprises electric quantity data acquired by the electric energy module;

the wireless transmission module adopts an LORA E32-TTL-1W chip, the electric energy module is made of an ADE7755 chip, the single chip microcomputer adopts an STC89C52 single chip microcomputer, JP1 is a CON connecting line at the input end of the single chip microcomputer, and JP2 is a CON connecting line at the output end of the single chip microcomputer;

m0 and M1 of the LORA E32-TTL-1W chip are grounded and set to be low level, a GND pin of the LORA E32-TTL-1W chip in the connection of the LORA E32-TTL-1W chip and the single chip microcomputer is connected to a port 1 of JP1, a VCC pin is connected to a port 4 of JP1, and TXD and RXD pins of the LORA E32-TTL-1W chip are respectively connected to a pin 10 (RXD) and a pin 11 (TXD) of the single chip microcomputer through

ports

2 and 3 of the JP 1;

further, the system also comprises a clock module, wherein the clock module adopts a DS1302 clock chip, the DS1302 clock chip provides clock calendar calculation for the single chip microcomputer and transmits the clock calendar calculation to the single chip microcomputer in real time, and a three-wire interface for SPI synchronous communication with the CPU is adopted.

Further, the display screen is an LCD display screen, an LCD1602 is adopted, and the display screen displays data of the single chip microcomputer.

The power supply module adopts a linear stabilized voltage power supply, and the linear stabilized voltage power supply is a 220V/5V stabilized voltage power supply for providing a +5V power supply for the singlechip, the electric energy module and the wireless transmission module.

The relay circuit is controlled by a single chip microcomputer to realize on-off, and consists of a triode Q2, a current-limiting resistor R8, a capacitor C4 and a relay, wherein an emitter of the triode Q2 of the relay is connected with a port 3 of JP2, a port 4 of JP2 is connected to a collector of a triode Q2, a base of the triode Q2 is connected to a pin 4 of the single chip microcomputer through a current-limiting resistor R8 of 1K by a lead, and a capacitor C4 of 0.01uF is connected between the port 2 and the port 1 of JP 2.

Furthermore, the crystal oscillator circuit of the single chip microcomputer adopts an internal clock mode, and the crystal oscillator input end XTAL1 and the output end XTAL2 of the crystal oscillator circuit are connected with two resistors in parallel and then are respectively connected to a No. 19 pin X1 and a No. 18 pin X2 of the single chip microcomputer.

Further, the pulse constant of the ADE7755 chip is selected to be 6400, the connection part of the electric energy module and the single chip microcomputer further comprises a photoelectric device, the optical coupler + end of the photoelectric device is connected to the 2 ports of the CON interface of the single chip microcomputer circuit JP1 through a conducting wire, the optical coupler + end of the photoelectric device is connected to the 13 pins of the single chip microcomputer from the 2 ports of JP1, and INT1 of the single chip microcomputer is used for interruption.

Furthermore, the device also comprises a 3V button battery serving as a standby power supply of the DS1302, and a 3V button battery serving as a standby power supply of the DS1302, wherein in the connection with the DS1302, the +5V power supply is connected to the No. 1 pin of the DS1302 and the No. 40 pin of the singlechip; the anode of the 3V standby power supply is connected to the No. 8 pin of the DS1302, and the cathode is grounded.

The utility model discloses the electric energy detection module selection that uses adopts ADE7755 preparation, and the chip of clock module adopts DS1302, need provide stand-by power supply for it, and stand-by power supply's power supply mode can set up to provide and trickle thin current charging's ability [10] to stand-by power supply, wireless sending module adopts LORA E32 chip, the utility model provides a display function adopts LCD1602 liquid crystal display, and LCD1602 can make it possess more additional functions through software programming, and is higher to the utilization ratio of monolithic, makes it accord with the needs in the modern life more, and the time of ammeter, timing switch machine and timing relay function set up through the button.

The utility model discloses have following advantage and beneficial effect:

the utility model discloses do not need a large amount of manual works to go the manual ammeter of checking meter of one family, realize the measurement and the demonstration of electric quantity, super power auto-power-off, regularly open and close, have the memory function to utilize the LORA chip to convey data to the PC in real time, realize long-range checking meter.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a functional block diagram of the present invention.

Fig. 2 is a circuit diagram of the connection between the relay circuit and the single chip microcomputer of the present invention.

Fig. 3 is a circuit diagram of the LORA E32-TTL-1W and the single chip microcomputer of the present invention.

Fig. 4 is a circuit diagram of the connection between the electric energy module and the single chip microcomputer of the present invention.

Fig. 5 is a circuit diagram of the DS1302 and the single chip microcomputer according to the present invention.

Fig. 6 is a circuit diagram of the reset circuit of the single chip microcomputer according to the present invention.

Fig. 7 is a circuit diagram of the key module and the single chip of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

An LORA-based energy metering data online acquisition device is shown in figures 1-7 and comprises a single chip microcomputer, a PC (personal computer) end, a wireless transmission module and an electric energy module, wherein the wireless transmission module transmits data of the single chip microcomputer to the PC end in a wireless transmission mode, and the data of the single chip microcomputer comprises electric quantity data acquired by the electric energy module;

ports

2 and 3 of the JP 1;

preferably, the system also comprises a clock module, wherein the clock module adopts a DS1302 clock chip, the DS1302 clock chip provides clock calendar calculation for the single chip microcomputer and transmits the clock calendar calculation to the single chip microcomputer in real time, a three-wire interface which is in synchronous communication with an SPI of a CPU is adopted, the system also comprises a 3V button battery as a standby power supply of the DS1302, and in the connection with the DS1302 chip, a +5V power supply is connected to a No. 1 pin of the DS1302 and a No. 40 pin of the single chip microcomputer; the anode of the 3V standby power supply is connected to the No. 8 pin of the DS1302, and the cathode is grounded.

Preferably, the system also comprises a display screen, wherein the display screen adopts an LCD display screen and an LCD1602, and the display screen displays the data of the single chip microcomputer.

Preferably, the wireless power supply further comprises a power supply module, wherein the power supply module adopts a linear stabilized voltage power supply, and the linear stabilized voltage power supply is a 220V/5V stabilized voltage power supply for providing a +5V power supply for the singlechip, the electric energy module and the wireless transmission module.

Preferably, the relay circuit is controlled by a single chip microcomputer to realize on-off, and consists of a triode Q2, a current-limiting resistor R8, a capacitor C4 and a relay, wherein an emitter of the triode Q2 of the relay is connected with a port 3 of JP2, a port 4 of JP2 is connected to a collector of a triode Q2, a base of the triode Q2 is connected to a pin 4 of the single chip microcomputer through a current-limiting resistor R8 of 1K by a lead, and a capacitor C4 of 0.01uF is connected between the port 2 and the port 1 of JP 2.

Preferably, the crystal oscillator circuit of the single chip microcomputer adopts an internal clock mode, the crystal oscillator circuit has an input end XTAL1 and an output end XTAL2 which are connected in parallel with two resistors and then respectively connected to a pin X1 and a pin X2 of the single chip microcomputer, the capacitors of the C1 and the C2 are 30PF, and the crystal oscillator is 11.0592 MHz.

Preferably, the pulse constant of the ADE7755 chip is 6400, the connection between the power module and the single chip further comprises a photoelectric device, the optical coupler + end of the photoelectric device is connected to 2 ports of the CON interface of the single chip circuit JP1 through a wire, and is connected to 13 pins of the single chip from the 2 ports of JP1, and is interrupted by INT1 of the single chip.

Preferably, the used power detection module is manufactured by adopting ADE 7755. Clock module's chip adopts DS1302, need provide stand-by power supply for it, stand-by power supply's power supply mode can set up to provide and carry out the ability of trickle current charging to stand-by power supply, wireless sending module adopts LORA E32 chip, the utility model provides a display function adopts LCD1602 liquid crystal display, and LCD1602 can make it possess more additional functions through software programming, and is higher to the utilization ratio of monolithic, makes its needs in more conforming to modern life.

Preferably, as shown in fig. 6, the resetting of the single chip microcomputer means that each register inside the single chip microcomputer is restored to an initial state through a series of operations. This operation is typically performed by external circuitry. According to the operation mode that resets and reset circuit's difference, can divide into the reset mode and go up the electric reset and reset two kinds of modes with the button, the utility model discloses a mode that the button resets, singlechip during operation, when the K5 button is pressed, the inside register of singlechip resets. The RESET circuit is connected to a No. 9 (RESET) pin of the single chip microcomputer, the C1 adopts an electrolytic capacitor of 10uF, and the R1 resistance is 10K.

Preferably, the touch type touch. The K1 returns to the ESC, returns from the menu, has the function of switching on and off a relay on a main interface, and is connected with a No. 5 pin of the singlechip;

k2 number adding key UP, increasing the selected value, and connecting with the No. 6 pin of the singlechip;

k3 number-reducing key DOW, reduce the selected number value, connect with No. 7 pin of the one-chip computer;

k4 MENU key MENU, enter and presume the MENU, connect with No. 8 base pins of the one-chip computer;

k5 reset button REST, carry out the singlechip and reset, be connected with singlechip 9 pin.

When the electric meter works, one end of the button connected with the single chip microcomputer is high level, the other end of the button is grounded, and when the button is pressed down, the corresponding pin of the single chip microcomputer is set to be low level, so that the button is identified.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An energy metering data online acquisition device based on LORA comprises a single chip microcomputer and a PC (personal computer) terminal, and is characterized by further comprising a wireless transmission module and an electric energy module, wherein the wireless transmission module transmits data of the single chip microcomputer to the PC terminal in a wireless transmission mode, and the data of the single chip microcomputer comprises electric quantity data acquired by the electric energy module;

m0 and M1 ends of the LORA E32-TTL-1W chip are grounded and set to be low level, a GND pin of the LORA E32-TTL-1W chip in the connection of the LORA E32-TTL-1W chip and the single chip microcomputer is connected to a port 1 of JP1, a VCC pin is connected to a port 4 of JP1, and TXD and RXD pins of the LORA E32-TTL-1W chip are respectively connected to a pin RXD 10 and a pin TXD 11 of the single chip microcomputer through ports 2 and 3 of JP 1.

2. The LORA-based energy metering data online collector according to claim 1, further comprising a clock module, wherein the clock module adopts a DS1302 clock chip, the DS1302 clock chip provides clock calendar calculation for the single chip microcomputer and transmits the clock calendar calculation to the single chip microcomputer in real time, and an SPI synchronous communication three-wire interface with a CPU is adopted.

3. The LORA-based energy metering data online collector according to claim 1, further comprising a display screen, wherein the display screen is an LCD display screen, and the display screen is an LCD1602, and displays data of the single chip microcomputer.

4. The LORA-based energy metering data online collector according to claim 1, further comprising a power module, wherein the power module adopts a linear stabilized voltage power supply, and the linear stabilized voltage power supply is a 220V/5V stabilized voltage power supply for providing +5V power for the single chip microcomputer, the electric energy module and the wireless transmission module.

5. The LORA-based energy metering data online collector as claimed in claim 1, further comprising a relay circuit, wherein the relay circuit is controlled by a single chip microcomputer to achieve power on and off, the relay circuit is composed of a transistor Q2, a current limiting resistor R8, a capacitor C4 and a relay, an emitter of the transistor Q2 of the relay is connected with a port 3 of JP2, a port 4 of JP2 is connected to a collector of a transistor Q2, a base of the transistor Q2 is connected to a pin 4 of the single chip microcomputer through a current limiting resistor R8 of 1K by a lead, and a capacitor C4 of 0.01uF is connected between the port 2 and the port 1 of JP 2.

6. The LORA-based energy metering data online collector of claim 1, wherein the crystal oscillator circuit of the single chip microcomputer adopts an internal clock mode, and the crystal oscillator circuit has an input end XTAL1 and an output end XTAL2 connected in parallel with two resistors and then respectively connected to a pin X1 and a pin X2 of the single chip microcomputer.

7. The LORA-based energy metering data online collector as claimed in claim 1, wherein the pulse constant of the ADE7755 chip is 6400, the connection between the power module and the single chip microcomputer further comprises a photoelectric device, the optical coupler + end of the photoelectric device is connected to the 2 port of the CON interface of the single chip microcomputer circuit JP1 through a lead, and is connected to the 13 pin of the single chip microcomputer from the 2 port of JP1, and is interrupted by INT1 of the single chip microcomputer.

8. The LORA-based energy metering data online collector of claim 2, further comprising a 3V button battery as a backup power source for the DS 1302.