CN215835418U

CN215835418U - Temperature sensor monitoring system based on Lora wireless transmission technology

Info

Publication number: CN215835418U
Application number: CN202121947912.1U
Authority: CN
Inventors: 孔涛; 曹青松; 张计飞; 高新宇; 姜飞翔; 汤晓红
Original assignee: Nanjing Jialong Electric Technology Co ltd
Current assignee: Nanjing Jialong Electric Technology Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-02-15
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a temperature sensor monitoring system based on a Lora wireless data transmission technology, which comprises a Lora wireless receiving device, a micro gateway, a data monitoring platform, a plurality of sets of temperature A/D sampling units, an embedded MCU unit and a Lora wireless transmitting device, wherein the temperature A/D sampling units, the embedded MCU unit and the Lora wireless transmitting device are connected in parallel and in sequence; the embedded MCU unit reads the data collected by the temperature A/D sampling unit, processes the data and transmits the processed data to the Lora wireless transmitting device; wireless data bidirectional interaction can be carried out between the plurality of Lora wireless transmitting devices and the Lora wireless receiving devices; the micro gateway is in communication connection with the data monitoring platform in a wireless network mode. The monitoring system realizes the functions of real-time monitoring and temperature alarming of users on temperature data, meets the requirements of temperature monitoring in various environmental places, and has the advantages of long communication distance, low power consumption, visualization of real-time data acquisition and no need of manual guard.

Description

Temperature sensor monitoring system based on Lora wireless transmission technology

Technical Field

The utility model relates to the technical field of power equipment monitoring, in particular to a temperature sensor monitoring system based on a Lora wireless data transmission technology.

Background

With the increasing sophistication of the national power system, the number of the related power distribution station rooms is increasing. However, in the use process of the power distribution station room, the problem of overhigh temperature in the power distribution station room due to short circuit or other faults is often not solved in time. The traditional method for monitoring the temperature of the power distribution station room needs manual day and night watching, and the monitoring method wastes manpower and financial resources. Therefore, it is very important to be able to read the data of the temperature sensor of the power distribution station room from a long distance, and it is a necessary option to transmit the data from a long distance in a wireless manner.

Disclosure of Invention

Aiming at the defects and shortcomings in the prior art, the utility model aims to provide the temperature sensor monitoring system which is unattended and avoids wasting precious manpower and is based on the Lora wireless data transmission technology.

The technical scheme of the utility model is as follows:

a temperature sensor monitoring system based on a Lora wireless data transmission technology comprises a Lora wireless receiving device, a micro gateway, a data monitoring platform, a plurality of sets of temperature A/D sampling units, an embedded MCU unit and a Lora wireless transmitting device which are connected in parallel and in sequence, and a one-to-many monitoring frame is formed; the embedded MCU unit reads data collected by the temperature A/D sampling unit, processes the data and transmits the processed data to the Lora wireless transmitting device; wireless data bidirectional interaction is carried out between the plurality of Lora wireless transmitting devices and the Lora wireless receiving devices; the Lora wireless receiving device is physically connected with the micro gateway; the micro gateway and the data monitoring platform are in communication connection in a wireless network mode.

Furthermore, the system also comprises a power supply which is used for supplying power for the temperature A/D sampling unit, the embedded MCU unit, the Lora wireless transmitting device, the Lora wireless receiving device and the Lora gateway.

Furthermore, the Lora wireless transmitting device at least comprises a physical layer modulation unit, a digital-to-analog conversion unit, a phase-locked loop and a power amplification unit; the Lora wireless receiving device at least comprises a low noise amplifying unit, a mixing unit, an analog-to-digital conversion unit and a physical layer demodulation unit.

Furthermore, the micro gateway is in communication connection with the data monitoring platform in a 4G mode.

Furthermore, the temperature A/D sampling unit is a temperature sensor and converts the ambient temperature into a temperature analog voltage value.

Further, the system also comprises a monitoring screen, and the data monitoring platform is connected with the monitoring screen.

Further, the Lora wireless receiving apparatus needs to perform impedance matching and filtering on a receiving signal circuit and subsequent circuits before obtaining data. The utility model has the following beneficial effects:

the temperature sensor monitoring system based on the Lora wireless data transmission technology can read the data of the temperature sensor of the power distribution station room in a long distance without manual guard, thereby avoiding wasting precious manpower.

The temperature sensor monitoring system based on the Lora wireless data transmission technology realizes the functions of real-time monitoring and temperature alarming of temperature data by users, meets the temperature monitoring of various environmental places, and has the advantages of long communication distance, low power consumption, visual real-time data acquisition and no need of manual watching.

Drawings

FIG. 1 is a block diagram of the structure flow of the present invention.

Fig. 2 is a working diagram of the Lora transmitting module and the Lora receiving module according to the embodiment of the present invention.

Detailed Description

For the convenience of understanding of those skilled in the art, the technical solutions in the embodiments of the present invention are clearly described below with reference to the drawings in the embodiments, and further description is made. The described embodiments are only some, but not all embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The temperature sensor monitoring system based on the Lora wireless data transmission technology comprises a temperature A/D sampling unit, an embedded MCU unit, a Lora wireless transmitting device, a Lora wireless receiving device, a micro gateway unit, a data monitoring platform and a power supply; the embedded MCU reads the data value collected by the temperature A/D sampling unit, and after the data value is operated, the temperature data passes through the Lora wireless transmitting device; the Lora wireless transmitting device and the Lora wireless receiving device can perform wireless data bidirectional interaction; the Lora wireless receiving device is physically connected with the micro gateway unit; and the micro gateway transmits the data to the data monitoring platform unit in a wireless network mode.

The temperature sensor monitoring system based on the Lora wireless data transmission technology comprises a temperature sensor, an embedded MCU unit, a Lora wireless transmitting device, a Lora wireless receiving device, a Lora gateway, a data monitoring platform and a power supply; the power supply can provide power supply meeting the requirements for the temperature sensor, the embedded MCU unit, the Lora wireless transmitting device, the Lora wireless receiving device and the Lora gateway; the temperature sensor is used for converting the measured environment temperature into a temperature analog voltage value; the embedded MCU unit obtains a real-time temperature value after A/D sampling and operation processing, and controls the Lora wireless transmitting module unit to transmit real-time temperature information to the Lora wireless receiving device; the temperature information that the Lora wireless receiving device received is passed to the Lora gateway, and after the Lora gateway received the temperature information, the temperature information was shown to data monitoring platform unit through the wireless network mode.

Preferably, each of the Lora wireless transmitting device and the Lora wireless receiving device has at least four data processing units, wherein the four data processing units in the Lora wireless transmitting device are a physical layer modulation unit, a digital-to-analog conversion unit, a phase-locked loop and a power amplification unit respectively; the four data processing units in the Lora wireless receiving device are respectively a low-noise amplifying unit, a mixing unit, an analog-to-digital conversion unit and a physical layer demodulation unit.

Preferably, the Lora wireless receiving apparatus needs to perform impedance matching and filtering on the received signal circuit and the subsequent circuit before obtaining data. The impedance matching realizes the maximum power utilization by realizing the reflection-free transmission of electromagnetic wave signals, and simultaneously can avoid the problems of electric energy interference, reflection and the like.

Preferably, the server (data monitoring platform) in the system may be connected to a plurality of Lora gateways (an extended connection mode in which the server and one Lora gateway are wirelessly connected in fig. 1). A plurality of Lora wireless transmitting devices can be connected under each Lora gateway at the same time, and the Lora wireless transmitting devices can correspond to a plurality of sites. The server can view the temperature information of more sites through a network established by the 4G gateway and the Lora gateway together.

Through the design, the temperature information of all sites is concentrated on a small number of servers, so that the management and statistics can be more convenient, the labor cost is saved, the temperature reading is more intelligent, and the working efficiency is improved.

Preferably, the temperature sensor monitoring system based on the Lora wireless data transmission technology of this embodiment can be uniformly displayed in the monitoring screen after the station temperature exceeds the upper limit value, so that the monitoring system is convenient to view and respond in time.

Example 1

As shown in fig. 1, a temperature sensor monitoring system based on the Lora wireless data transmission technology includes a Lora wireless receiving device, a Lora gateway, a server, at least one temperature sensor, an embedded MCU unit, and a Lora wireless transmitting device. The temperature sensor is connected with the embedded MCU unit, the embedded MCU unit comprises a serial port output unit, a data storage unit, a power module unit and a display unit, and the embedded MCU unit controls the Lora wireless transmitting device. Lora wireless transmitting device can turn into the Lora signal with data then send, and Lora wireless transmitting device and Lora wireless receiving device pass through wireless teletransmission Lora signal, and the Lora gateway is being connected to Lora wireless receiving device, and Lora wireless receiving device is connected to Lora gateway one end, and the 4G antenna is connected to the other end, and communication is gone on through wireless 4G's mode between Lora gateway and the server, and monitoring platform passes through network connection server.

As shown in fig. 2, after data is transmitted, the Lora wireless transmitting apparatus needs to be processed by a physical layer modulation unit, a digital-to-analog conversion unit, a phase-locked loop and a power amplification unit, and then transmits the data in the form of electromagnetic waves through an antenna. The method comprises the steps that a required Lora signal is received by a Lora wireless receiving device after impedance matching and filtering, and then temperature data contained in the Lora signal is obtained through four steps of low-noise amplification, frequency mixing, analog-to-digital conversion and physical layer demodulation.

The process of detecting the temperature by using the temperature sensor monitoring system based on the Lora wireless data transmission technology of the embodiment is as follows:

temperature sensor turns into corresponding analog voltage value with the temperature of surrounding environment, export embedded MCU unit, embedded MCU unit samples analog voltage value earlier, corresponding conversion of rethread, turn into actual temperature value, periodic control Lora wireless transmitting device sends actual temperature value data through the mode of turning into the Lora signal afterwards, the Lora wireless receiving device who is located far away detects that there is the Lora signal transmission to come, receive the Lora signal and demodulation, send the data that the demodulation is good to the Lora gateway afterwards, the data that the Lora gateway sent different Lora wireless transmitting device to the server in proper order. And after receiving the data frame sent by the Lora gateway, the server extracts effective data in the data frame to display, and the monitoring screen is connected with the server to check the data content.

Claims

1. A temperature sensor monitoring system based on a Lora wireless data transmission technology is characterized in that the system comprises a Lora wireless receiving device, a micro gateway, a data monitoring platform, a plurality of sets of temperature A/D sampling units, an embedded MCU unit and a Lora wireless transmitting device which are connected in parallel and in sequence, and a one-to-many monitoring frame is formed; the embedded MCU unit reads data collected by the temperature A/D sampling unit, processes the data and transmits the processed data to the Lora wireless transmitting device; wireless data bidirectional interaction is carried out between the plurality of Lora wireless transmitting devices and the Lora wireless receiving devices; the Lora wireless receiving device is physically connected with the micro gateway, and the micro gateway is in communication connection with the data monitoring platform in a wireless network mode.

2. The system of claim 1, further comprising a power supply, wherein the power supply is configured to supply power to the temperature A/D sampling unit, the embedded MCU unit, the Lora wireless transmitter, the Lora wireless receiver, and the Lora gateway.

3. The system as claimed in claim 1 or 2, wherein the Lora wireless transmitter at least includes a physical layer modulation unit, a digital-to-analog conversion unit, a phase-locked loop and a power amplification unit; the Lora wireless receiving device at least comprises a low noise amplifying unit, a mixing unit, an analog-to-digital conversion unit and a physical layer demodulation unit.

4. The system as claimed in claim 1 or 2, wherein the micro gateway is communicatively connected to the data monitoring platform in a 4G manner.

5. The system as claimed in claim 1 or 2, wherein the temperature A/D sampling unit is a temperature sensor for converting the ambient temperature into a temperature analog voltage value.

6. The system for monitoring the temperature sensor based on the Lora wireless data transmission technology as claimed in claim 1 or 2, further comprising a monitoring screen, wherein the monitoring screen is connected to the data monitoring platform.

7. The system as claimed in claim 1 or 2, wherein the Lora wireless receiving device needs to perform impedance matching and filtering on the receiving signal circuit and the subsequent circuit before obtaining data.