WO2018120907A1

WO2018120907A1 - Electricity generation data acquisition internet-of-things uploading circuit and system

Info

Publication number: WO2018120907A1
Application number: PCT/CN2017/101000
Authority: WO
Inventors: 冼宇俊; 郑志伟
Original assignee: 珠海奥释科技有限公司
Priority date: 2016-12-29
Filing date: 2017-09-08
Publication date: 2018-07-05
Also published as: CN206281899U

Abstract

An electricity generation data acquisition Internet-of-things uploading circuit, comprising: a first sampling resistor R1, a second sampling resistor R2, a first ordinary resistor R3, and a second ordinary resistor R4, a first adjustable precision resistor RW1, a second adjustable precision resistor RW2, a first control chip U1, a second control chip U2, a third control chip U3, a capacitor C1, a first diode D1, a second diode D2, a WiFi module P1, and a power supply. An electricity generation data acquisition Internet-of-things uploading system comprises an electricity generation data acquisition Internet-of-things uploading circuit, an electricity generation device, a wireless hotspot, a router, Ethernet, a server, and a database. The electricity generation data acquisition Internet-of-things uploading system can implement uninterrupted acquisition of electricity generation data and uploads the data into a server in real time by accessing the Internet using WiFi on the basis of Internet-of-things technology, thereby greatly improving the acquisition efficiency of electricity generation data.

Description

Power generation data collection Internet of Things uploading circuit and system

Technical field

The utility model belongs to the technical field of data collection and transmission, and particularly relates to a power generation data collection object network uploading circuit and system.

Background technique

The existing power generation data collection and uploading is mainly through sensors and serial communication. The shortcoming of serial communication is that the real-time performance is poor. It is necessary to equip each power equipment with a computer terminal as a data collection node, and then upload it to the relevant server through the computer, the process is complicated and the hardware cost is high. The public expects that the uploading of data receives the limitation of the working environment of the local computer terminal, and the real-time feedback cannot be achieved. This is a major limitation for data processing in the smart grid scenario.

At the same time, the use of wired transmission will increase the cost and difficulty of maintenance and problem detection. Therefore, wired communication methods such as serial communication have been gradually replaced. The data collection in the power generation process of the power system is still carried out by means of wired data collection. Relatively lagging behind in this technical field.

With the popularity of WiFi technology, WiFi can be used to directly upload the Internet. On the one hand, it can obtain the real use of power generation equipment, because the direct uploading can clearly and completely record the entire power generation efficiency of the power generation equipment and the use of the user. Data can provide more useful hidden data for future big data analytics. On the other hand, compared with most current power generation data acquisition systems, most of them use wired serial communication equipment to communicate, and the collected sensor data information is first transmitted to the local server host through the serial cable, and finally aggregated into results and uploaded through the Internet terminal. Go to the remote data center. However, the communication method collected by the local server and then aggregated to the remote server is insufficient in real-time due to one or more transmission relays (the local must have at least one relay device connected to the Internet, and the data is transmitted to the Internet remotely. In the database). The WiFi data transmission device adopts the WiFi communication method. Since WiFi itself is an Internet-based site, a data acquisition module based on WiFi communication can directly send and collect data to a remote server through the Internet, because the intermediate communication process is reduced. Its real-time performance will be relatively high, and you can not build a local server, just a wireless hotspot that can be connected to the external network, which can save user costs. The device based on WiFi wireless transmission can be said to be directly connected to the Internet because the WiFi module itself can serve as a site. This makes the implementation of the Internet of Things feature simple. IoT of power equipment has the most critical role for smart grids, smart power plants, and grid big data services. It is a necessary technology for smart grid smart cities in the future.

Utility model content

The purpose of the utility model is to provide a power generation data collection Internet of Things uploading circuit and system, and the power generation data collection Internet of Things uploading system is based on the Internet of Things technology, adopts WiFi to enter the network, can realize uninterrupted collection of power generation data, and can be put into the service in real time. In the server, the efficiency of power generation data collection is greatly improved.

In order to realize the above technical solution, the utility model provides a power generation data collection object network uploading circuit, comprising: a first sampling resistor R1, a second sampling resistor R2, a first common resistor R3, a second common resistor R4, and a first Precision precision resistor RW1, second adjustable precision resistor RW2, first control chip U1, second control chip U2, third control chip U3, capacitor C1, first diode D1, second diode D2, WiFi module P1 and power supply;

The first control chip U1 includes a programmable analog-to-digital converter and a microcontroller, and two legs of the first control chip U1 are connected to one end of the second diode D2 and the second common resistor R4. The 3rd leg of the first control chip U1 is connected to one end of the first diode D1, the 4th leg of the first control chip U1 is connected to the 5th pin of the WiFi module P1, and the 7th pin of the first control chip U1 In conjunction with the ground, the pin 9 of the first control chip U1 is connected to the power source, and the 19 pin of the first control chip U1 and the 1 pin and the 2 pin of the second control chip U2 are connected in parallel, the first control The 20 feet of the chip U1 are connected to the 6th and 7th pins of the second control chip U2;

The second control chip U2 is used for voltage amplification, the 3 legs of the second control chip U2 are connected to one end of the first adjustable precision resistor RW1, and the 5th pin and the second precision of the second control chip U2 are adjustable. One end of the resistor RW2 is connected, the 4th pin of the second control chip U2 is grounded, and the 8th pin of the second control chip U2 is connected to the power source;

The third control chip U3 is used for current collection, the first and second legs of the third control chip U3 are connected to the input end of the collected current, and the third and fourth legs of the third control chip U3 are connected to the collected current. The output terminal of the third control chip U3 is grounded, the 6 pin of the third control chip U3 is connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, and the third control chip U3 is connected. The 7th pin is connected to one end of the second precision adjustable resistor RW2, and the 8th pin of the third control chip U3 is connected to the power supply.

Preferably, one end of the second precision adjustable resistor RW2 is connected to the 7 pin of the third control chip U3, the other end is connected to the 5 pin of the second control chip U2, and the second precision adjustable resistor RW2 is adjustable. The terminal is connected to one end of the second sampling resistor R2, and the other end of the second sampling resistor R2 is connected to the ground.

Preferably, the anode of the first diode D1 is connected to the 3 pin of the third control chip U3, and the cathode is connected to the 4 pin of the WiFi module P1 and the end of the first common resistor R3. The first common resistor R3 The other end is connected to a high level.

Preferably, the capacitor C1 is a compensation capacitor. One end of the capacitor C1 is connected to the 6th pin of the third control chip U3, and the other end is connected to the 5 pin of the third control chip U3.

The working principle of the power generation data collection IoT uploading circuit is: second control chip U2, third control chip U3, first sampling resistor R1, second sampling resistor R2, first adjustable precision resistor RW1, second adjustable precision The resistor RW2 and its periphery constitute a voltage and current collecting circuit, and when the voltage is collected, the first adjustable precision resistor RW1 and the first sampling resistor are passed. R1 is divided, the measured voltage range is corrected, and then buffered and isolated by the second control chip U2, sent to the analog-to-digital converter of the first control chip U1, and finally converted by the microcontroller of the first control chip U1. Calculating the measured output voltage of the power generation device; when performing current collection, the current to be collected is first converted into a voltage value by the third control chip U3, and then passes through the second adjustable precision resistor RW2 and the second sampling resistor R2. After partial pressure, it is processed by the second control chip U2 and sent to the analog-to-digital converter of the first control chip U1. Finally, the microcontroller of the first control chip U1 performs numerical conversion calculation to measure the output current of the power generating device. The WiFi module P1 and its peripheral circuits form a WiFi transmission circuit, and the microprocessor of the first control chip U1 processes the collected voltage and current data to improve the validity of the collected data, and then calculates other electrical parameters through the collected parameters, The unified format is packaged and packaged and sent to the WiFi transmission circuit, and the external anti-interference diode communicates with the P1 serial port of the WiFi module, and the data is transmitted through the antenna.

The utility model also provides a power generation data collection object network uploading system, comprising: the foregoing power generation data collection object network uploading circuit, power generation device, wireless hotspot, router, Ethernet, server and database, signal output of the power generation device The end is connected to the power generation data collection Internet of Things uploading circuit, and the power generation data collection Internet of Things uploading circuit is connected with the wireless hotspot through the WiFi module P1, and the wireless hotspot transmits the collected data to the server through the Ethernet through the router, and the server will The data is stored in the database.

The working principle of the power generation data collection IoT uploading system is as follows, which specifically includes the following steps:

S1, power equipment voltage and current data acquisition: during the normal operation of the power generation equipment, the voltage output end is connected to the power generation data collection IoT upload circuit, and the power generation data collection object network upload circuit passes the first adjustable precision resistor RW1 and the first The sampling resistor R1 is divided, and the measured voltage range is corrected, and then buffered and isolated by the second control chip U2, sent to the analog-to-digital converter of the first control chip U1, and finally subjected to numerical conversion calculation by the microcontroller to measure the power generation device. The output voltage of the power generation device is first converted into a voltage value by the third control chip U3, and then divided by the second adjustable precision resistor RW2 and the second sampling resistor R2, and then passed through the second The control chip U2 is processed and sent to the analog-to-digital converter of the first control chip U1, and finally subjected to numerical conversion calculation by the microcontroller to measure the output current of the power generating device;

S2, data transmission: the microprocessor of the first control chip U1 processes the collected voltage and current data, improves the validity of the collected data, and then calculates other electrical parameters through the collected parameters, and then packages and packs them in a unified format. Delivered to the WiFi module P1, and the data is transmitted to the outside through the antenna;

S3. Data storage: The WiFi module P1 is connected to the Ethernet through the local wireless hotspot, and the local wireless hotspot is connected to the remote server through the TCP/IP protocol, and the collected data is transmitted to the server through the Ethernet, and the server stores the data in the database.

The beneficial effects of the utility model are as follows:

1) The power generation data collection IoT uploading circuit adopts a control chip including a programmable analog-digital converter and a microcontroller to realize uninterrupted real-time acquisition of electrical parameters (such as voltage, current, power, etc.) of the circuit, and Through the paired WiFi module, the real-time data transmission is realized, the circuit integration is high, and the hardware is programmable. For the acquisition data correction and the later system upgrade, the WiFi wireless transmission mode can be adopted, the maintenance difficulty is greatly simplified, and the power equipment is realized. Networking, which has the most critical role for smart grids, smart power stations, and grid big data services, is a must-have technology for smart grid smart cities in the future.

2), the power generation data collection IoT uploading system uses the power generation data collection IoT upload circuit to realize the electrical parameters of the circuit (such as voltage, current, power, etc.) to collect and connect the Internet through the Internet of Things, upload relevant data to the specified server The advantage of this process is that as long as the user uses the device, the relevant electrical parameters of the device can always pass through the WiFi wireless module, enter the Internet via TCP/IP protocol, and transmit to the server, which has very good superiority for the statistics of the generated data. Its superiority is reflected in its always running in parallel with the power generation equipment, as long as there is data generated, it can be uploaded to the server to ensure the synchronization of the generated data.

3) The power generation data collection IoT uploading system uses a combination system of WiFi wireless communication and a microcontroller, so the system can use WiFi to perform wireless upgrade, which is convenient for correcting the collected electrical parameters and implementing related functions, and also because the system is integrated. The WiFi transmission module realizes the control of the collection function of the power generation device having the utility model, and can also be performed through WiFi, which is very convenient.

DRAWINGS

FIG. 1 is a circuit diagram of the uploading of the power generation data collection object in the utility model.

2 is a schematic diagram of a power generation data collection object network uploading system of the present invention.

In the figure: 100, power generation data collection IoT upload circuit; 200, power generation equipment; 300, wireless hotspot; 400, router; 500, Ethernet; 600, server; 700, database.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

Embodiment 1: A power generation data collection Internet of Things uploading circuit.

Referring to FIG. 1 , a power generation data collection Internet of Things uploading circuit includes: a first sampling resistor R1, a second sampling resistor R2, a first common resistor R3, a second common resistor R4, and a first adjustable precision resistor. RW1, second adjustable fine a dense resistor RW2, a first control chip U1, a second control chip U2, a third control chip U3, a capacitor C1, a first diode D1, a second diode D2, a WiFi module P1, and a power supply;

Referring to FIG. 1, one end of the second precision adjustable resistor RW2 is connected to the 7th leg of the third control chip U3, and the other end is connected to the 5 pin of the second control chip U2. The second precision adjustable resistor RW2 The adjustable end is connected to one end of the second sampling resistor R2, and the other end of the second sampling resistor R2 is connected to the ground. The anode of the first diode D1 is connected to the 3 pin of the third control chip U3, and the cathode is connected to the 4 pin of the WiFi module P1 and the first common resistor R3. The first common resistor R3 is terminated at the other end. Go high. The capacitor C1 is a compensation capacitor. One end of the capacitor C1 is connected to the 6 pin of the third control chip U3, and the other end is connected to the 5 pin of the third control chip U3.

The working principle of the power generation data collection IoT uploading circuit is: second control chip U2, third control chip U3, first sampling resistor R1, second sampling resistor R2, first adjustable precision resistor RW1, second adjustable precision The resistor RW2 and its periphery constitute a voltage and current collecting circuit. When the voltage is collected, the first adjustable precision resistor RW1 and the first sampling resistor R1 are divided to correct the measured voltage range, and then buffered by the second control chip U2. After that, it is sent to the analog-to-digital converter of the first control chip U1, and finally, the digital controller of the first control chip U1 performs numerical conversion calculation to measure the output voltage of the power generating device; when current collection is performed, the current to be collected is first passed. The third control chip U3 is converted into a voltage value, and then divided by the second adjustable precision resistor RW2 and the second sampling resistor R2, and then passed through the second control The chip U2 is processed and sent to the analog-to-digital converter of the first control chip U1. Finally, the microcontroller of the first control chip U1 performs numerical conversion calculation to measure the output current of the power generating device. The WiFi module P1 and its peripheral circuits form a WiFi transmission circuit, and the microprocessor of the first control chip U1 processes the collected voltage and current data to improve the validity of the collected data, and then calculates other electrical parameters through the collected parameters, The unified format is packaged and packaged and sent to the WiFi transmission circuit, and the external anti-interference diode communicates with the P1 serial port of the WiFi module, and the data is transmitted through the antenna.

Embodiment 2: A power generation data collection Internet of Things uploading system.

Referring to FIG. 2, a power generation data collection Internet of Things uploading system includes: the power generation data collection Internet of Things uploading circuit 100, the power generating device 200, the wireless hotspot 300, the router 400, the Ethernet 500, and the server as described in Embodiment 1. 600 and the database 700, the signal output end of the power generating device 200 is connected to the power generation data collection Internet of Things uploading circuit 100, and the power generating data collecting Internet of Things uploading circuit 100 is paired with the wireless hotspot 300 through the WiFi module P1, the wireless hotspot The collected data is transmitted through the Ethernet 500 to the server 600 via the router 400, which stores the data in the database 700.

The power generation data collection Internet of Things uploading system uses the power generation data collection Internet of Things uploading circuit 100 as described in Embodiment 1 to realize real-time collection of power generation parameters (such as voltage, current, power, etc.) of the power generating equipment 200 and through the WiFi connection. Networking, uploading relevant data to the database 700 in the designated server 600 for storage, realizing real-time monitoring of the power generation data of the power generation device 200, enhancing the effectiveness of the data update, and the power generation data collection Internet of Things uploading system uses WiFi wireless A combination of communication and microcontroller, so the system can use WiFi to perform wireless upgrade, which is convenient for correcting the collected electrical parameters and implementing related functions. At the same time, because the system integrates the WiFi transmission module, the power generation device 200 having the utility model is realized. The control of the acquisition function can also be performed via WiFi, which is very convenient.

In order to further explain the present invention, the working principle of the power generation data collection Internet of Things uploading system is explained as follows, which specifically includes the following steps:

S1, power generation equipment 200 voltage and current data acquisition: during normal operation of the power generation equipment 200, the voltage output end is connected to the power generation data collection Internet of Things upload circuit 100, and the power generation data collection Internet of Things upload circuit 100 passes the first adjustable precision resistor The RW1 and the first sampling resistor R1 are divided, and the measured voltage range is corrected, and then buffered and isolated by the second control chip U2, sent to the analog-to-digital converter of the first control chip U1, and finally subjected to numerical conversion calculation by the microcontroller. The output voltage of the power generation device is measured; the current measurement of the power generation device is first converted into a voltage value by the third control chip U3, and then divided by the second adjustable precision resistor RW2 and the second sampling resistor R2, after which And processed by the second control chip U2 and sent to the analog-to-digital converter of the first control chip U1, and finally subjected to numerical conversion calculation by the microcontroller to measure the output current of the power generating device;

S3. Data storage: The WiFi module P1 is connected to the Ethernet 500 through the local wireless hotspot 300, and the local wireless hotspot 300 is connected to the remote server 500 through the TCP/IP protocol, and the collected data is transmitted to the server 600 through the Ethernet 500, and the server 600 transmits the data. It is stored in the database 700.

Through the power generation data collection IoT uploading system, real-time data collection and real-time transmission of power data can be realized, the synchronization of power generation data update is ensured, and the data lag in the traditional data collection and transmission method of power data is avoided.

The above is a preferred embodiment of the present invention, but the present invention is not limited to the contents disclosed in the embodiment and the drawings, so that the equivalents are not obtained without departing from the spirit of the present disclosure. Modifications fall within the scope of protection of the present invention.

Claims

A power generation data collection Internet of Things uploading circuit, comprising: a first sampling resistor R1, a second sampling resistor R2, a first common resistor R3, a second common resistor R4, a first adjustable precision resistor RW1, a second The precision resistor RW2, the first control chip U1, the second control chip U2, the third control chip U3, the capacitor C1, the first diode D1, the second diode D2, the WiFi module P1, and the power source;

The first control chip U1 includes a programmable analog-to-digital converter and a microcontroller, and two legs of the first control chip U1 are connected to one end of the second diode D2 and the second common resistor R4. The 3rd leg of the first control chip U1 is connected to one end of the first diode D1, the 4th leg of the first control chip U1 is connected to the 5th pin of the WiFi module P1, and the 7th pin of the first control chip U1 In conjunction with the ground, the pin 9 of the first control chip U1 is connected to the power source, and the 19 pin of the first control chip U1 and the 1 pin and the 2 pin of the second control chip U2 are connected in parallel, the first control The 20 feet of the chip U1 are connected to the 6th and 7th pins of the second control chip U2;

The second control chip U2 is used for voltage amplification, the 3 legs of the second control chip U2 are connected to one end of the first adjustable precision resistor RW1, and the 5th pin and the second precision of the second control chip U2 are adjustable. One end of the resistor RW2 is connected, the 4th pin of the second control chip U2 is grounded, and the 8th pin of the second control chip U2 is connected to the power source;

The third control chip U3 is used for current collection, the first and second legs of the third control chip U3 are connected to the input end of the collected current, and the third and fourth legs of the third control chip U3 are connected to the collected current. The output terminal of the third control chip U3 is grounded, the 6 pin of the third control chip U3 is connected to one end of the capacitor C1, the other end of the capacitor C1 is grounded, and the third control chip U3 is connected. The 7th pin is connected to one end of the second precision adjustable resistor RW2, and the 8th pin of the third control chip U3 is connected to the power supply.
The power generation data collection IoT uploading circuit according to claim 1, wherein one end of the second precision adjustable resistor RW2 is connected to the 7th pin of the third control chip U3, and the other end is connected to the second control chip U2. The other end of the second precision resistor RW2 is connected to one end of the second sampling resistor R2, and the other end of the second sampling resistor R2 is connected to the ground.
The power generation data collection IoT uploading circuit of claim 2, wherein the anode of the first diode D1 is connected to the 3 pin of the third control chip U3, and the cathode and the WiFi module P1 are 4 feet, One end of a common resistor R3 is connected in parallel, and the other end of the first common resistor R3 is connected to a high level.
The power generation data collection IoT uploading circuit according to claim 3, wherein the capacitor C1 is a compensation capacitor, one end of the capacitor C1 is connected to the 6th pin of the third control chip U3, and the other end is connected to the third control. 5 feet of chip U3.
A power generation data collection Internet of Things uploading system, comprising: the power generation data collection Internet of Things uploading circuit, the power generating device, the wireless hotspot, the router, the Ethernet, the server, and the database according to claim 4, wherein the power generation device The signal output end is connected to the power generation data collection Internet of Things uploading circuit, and the power generation data collection Internet of Things uploading circuit is connected with the wireless hotspot through the WiFi module P1, and the wireless hotspot transmits the collected data to the server through the Ethernet through the router. The server stores the data in a database.