CN202404735U - Wireless temperature and humidity acquisition system - Google Patents

Abstract

The utility model relates to a wireless temperature and humidity collection system, which belongs to the field of automation technology. The wireless temperature and humidity collection system includes a data collection subsystem and a data collection subsystem; the data collection subsystem and the data collection subsystem are connected in a wireless manner; the utility model The wireless communication module with low power consumption saves the communication cable used in traditional communication and saves resources; the data acquisition subsystem adopts solar battery power supply, which saves power and is environmentally friendly; at the same time, the utility model is simple to operate and easy to use, and can be applied to buildings , Warehouses, flue-cured rooms, etc. temperature collection.

Description

A wireless temperature and humidity collection system

technical field

The utility model relates to a wireless temperature and humidity collection system, which belongs to the technical field of automation. the

technical background

DHT11 is a commonly used digital temperature and humidity sensor. Its structure is simple, its measurement accuracy is high, its reflection speed is fast, and its cost is low. At present, most of the temperature and humidity collections use wired methods, and the data needs to be transmitted over a long distance. Very long communication cables cause a great waste of resources and high cost, so it is necessary to design a low-cost wireless temperature and humidity acquisition system.

Utility model content

The utility model proposes a wireless temperature and humidity collection system, which adopts a wireless connection instead of a communication cable, and solves the problems of waste of resources and high cost.

The technical solution adopted in the utility model is: the wireless temperature and humidity acquisition system includes a data acquisition subsystem and a data collection subsystem; the data acquisition subsystem includes a digital temperature and humidity sensor (DHT11) 1, a single-chip microcomputer 2, a voltage stabilizing circuit 3, and a lithium battery 4 , solar panel 5, wireless communication equipment 6; the data bus of the digital temperature and humidity sensor (DHT11) 1 is connected to the IO port of the single-chip microcomputer 2, and the solar panel 5 and the lithium battery 4 are connected in parallel to the input end of the voltage stabilizing circuit 3 , the output end of the voltage stabilizing circuit 3 is connected to the power input end of the single-chip microcomputer 2, the digital temperature and humidity sensor (DHT11) 1, and the wireless communication device 6 respectively; the data line of the wireless communication device 6 is connected to the IO port of the single-chip microcomputer 2; The data collection subsystem includes wireless communication equipment 7, character liquid crystal display 8, single-chip microcomputer 9 and its peripheral serial port level conversion circuit 10 and host computer 11; 11's power supply, the wireless communication device 7 is connected with the IO port of the single-chip microcomputer 9, the data line and the control line of the character liquid crystal display 8 are all connected with the IO port of the single-chip microcomputer 9, and the serial port data line of the single-chip microcomputer 9 is connected with the serial port level conversion circuit 10 The data line is connected; the data acquisition subsystem and the data collection subsystem are connected wirelessly.

The data acquisition system can be connected to a maximum of 8 digital temperature and humidity sensors (DHT11) 1 and connected to the data collection subsystem in a wireless manner.

The digital temperature and humidity sensor (DHT11) 1, single-chip microcomputer 2, voltage stabilizing circuit 3, lithium battery 4, solar panel 5, wireless communication equipment 6, wireless communication equipment 7, character liquid crystal display 8, single-chip microcomputer 9 and its periphery The serial port level conversion circuit 10 and the host computer 11 are all commercially available common components on the market.

The beneficial effects of the utility model are:

1. The wireless communication equipment adopts a low-power wireless communication module, which saves the communication cables used in traditional communication and saves resources;

2. The data acquisition subsystem is powered by solar cells, saving power and environmental protection;

3. Simple operation and convenient use.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the schematic diagram of the principle of the data acquisition subsystem of the present utility model;

Fig. 3 is a schematic diagram of the principle of the data receiving subsystem of the present invention.

In the figure: 1-temperature and humidity sensor DHT11; 2-single-chip microcomputer; 5-solar panel; 4-lithium battery; 3-stabilizing circuit; 6-wireless communication module; 7-wireless communication module; 9-Single-chip microcomputer; 10-serial port level conversion circuit; 11-host computer.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, so as to facilitate the technical personnel's understanding.

As shown in Figure 1: the wireless temperature and humidity acquisition system includes a data acquisition subsystem and a data collection subsystem; the data acquisition subsystem and the data collection subsystem are connected wirelessly.

As shown in Figure 2: the data acquisition subsystem includes digital temperature and humidity sensor (DHT11) 1, single chip microcomputer 2, voltage regulator circuit 3, lithium battery 4, solar panel 5, wireless communication equipment 6; digital temperature and humidity sensor (DHT11) 1 The data bus is connected with the IO port of the single-chip microcomputer 2, and the solar panel 5 is connected with the input terminal of the voltage stabilizing circuit 3 after being connected in parallel with the lithium battery 4, and the output terminal of the voltage stabilizing circuit 3 is connected with the single-chip microcomputer 2 and the digital temperature and humidity sensor ( DHT11) 1. The power input terminal of the wireless communication device 6 is connected; the data line of the wireless communication device 6 is connected with the IO port of the microcontroller 2

As shown in Figure 3: the data collection subsystem includes wireless communication equipment 7, character liquid crystal display 8, single-chip microcomputer 9 and its peripheral serial port level conversion circuit 10 and host computer 11; single-chip microcomputer 9, wireless communication equipment 7, character liquid crystal Display 8 all adopts the power supply of upper computer 11, and wireless communication equipment 7 links to each other with the IO port of single-chip microcomputer 9, and the data line and control line of character liquid crystal display 8 are all connected with the IO port of single-chip microcomputer 9, and the serial port data line of single-chip microcomputer 9 is connected with The data lines of the serial port level conversion circuit 10 are connected to each other.

The working principle of the data acquisition subsystem: the data acquisition subsystem in the utility model takes the single-chip microcomputer 2 as the core, and adopts the solar power supply mode to supply power to the system. Under the sunlight, the solar electromagnetic panel 5 generates electric energy and stores it in the lithium battery 4 for use by the system. The voltage from the lithium battery 4 is not very stable, so it is supplied to the system after passing through the voltage stabilizing circuit 3 to ensure the reliability and stability of the system. run. When the system is powered on and starts to run, the single-chip microcomputer 2 writes instructions to each digital temperature and humidity sensor (DHT11) 1 in turn, and when the corresponding digital temperature and humidity sensor (DHT11) 1 receives the instruction, it starts to collect temperature and humidity data and convert them The digital quantity is transmitted to the single-chip microcomputer 2. After the single-chip microcomputer 2 receives the data of temperature and humidity, it operates the wireless communication device 6 to issue a corresponding transmission command, and then transmits the data to the wireless communication device 6 to make the temperature and humidity data in the form of electromagnetic waves. send it out.

The working principle of the data collection subsystem: the data collection in the utility model is based on the single-chip microcomputer 9. After the wireless communication device 7 receives the temperature and humidity data, it notifies the single-chip microcomputer 9 to start data transmission, and then the wireless communication device 7 transmits the temperature and humidity data received to the single-chip microcomputer 9, and the single-chip microcomputer 9 receives the temperature and humidity data. Write into the character liquid crystal display 8 to display the temperature and humidity data collected by each temperature and humidity sensor 1 at present, and on the other hand, transmit the temperature and humidity data to the upper position in the form of ASCII code through the serial port of the single chip microcomputer 9 and the serial port level conversion circuit Machine 11 has a host computer to process or store data.

The working process of the utility model is: when there is light in the daytime, the solar battery panel 5 absorbs solar energy and converts it into electric energy, and stores the electric energy through the lithium battery 4 for use by the system after being stabilized by the voltage stabilizing circuit 3 . After the power is turned on, the digital temperature and humidity sensor (DHT11) 1 starts to collect temperature and humidity data, and the single-chip microcomputer 2 reads the temperature and humidity data of each digital temperature and humidity sensor (DHT11) 1 in turn. The humidity data is sent to the data receiving system. After receiving the temperature and humidity data through the wireless communication device 7, the data receiving end transmits the data to the single-chip microcomputer 9. On the one hand, it displays the real-time temperature and humidity data through the character liquid crystal display 8, and on the other hand, through the serial port level conversion circuit 10, the data is passed through the host computer. The serial port of the computer is transmitted to the host computer 11 to store or send corresponding control commands according to the temperature data; for further reducing power consumption, the user can close the liquid crystal display 8 and directly display the temperature and humidity data through the host computer, and the user can set it according to the actual situation.

The utility model is illustrated through a specific implementation process. Without departing from the scope of the utility model, various transformations and equivalent replacements can also be performed on the utility model. Therefore, the utility model is not limited to the disclosed specific implementation process. , but should include all the implementations that fall within the scope of the claims of the present invention.

Claims (2)

1. A wireless temperature and humidity acquisition system, characterized in that: the wireless temperature and humidity acquisition system includes a data acquisition subsystem and a data collection subsystem; the data acquisition subsystem includes a digital temperature and humidity sensor (DHT11) (1), a single-chip microcomputer (2) , voltage stabilizing circuit (3), lithium battery (4), solar panel (5), wireless communication equipment (6); the data bus of the digital temperature and humidity sensor (DHT11) (1) is connected with the IO port of the single chip microcomputer (2) connection, the solar panel (5) and the lithium battery (4) are connected in parallel to the input terminal of the voltage stabilizing circuit (3), and the output terminal of the voltage stabilizing circuit (3) is connected to the single chip microcomputer (2), digital temperature and humidity sensor ( DHT11) (1), the power input terminal of the wireless communication device (6) is connected; the data line of the wireless communication device (6) is connected with the IO port of the single chip microcomputer (2); the data collection subsystem includes the wireless communication device (7) , character liquid crystal display (8), single-chip microcomputer (9) and its peripheral serial port level conversion circuit (10); single-chip microcomputer (9), wireless communication equipment (7), character liquid crystal display (8) all adopt the upper Power supply, the wireless communication device (7) is connected to the IO port of the single-chip computer (9), the data line and the control line of the character liquid crystal display (8) are connected to the IO port of the single-chip computer (9), and the serial port data of the single-chip computer (9) The line is connected with the data line of the serial port level conversion circuit (10); the data acquisition subsystem and the data collection subsystem are connected in a wireless manner. 2. A wireless temperature and humidity acquisition system according to claim 1, characterized in that: the data acquisition system can be connected to a maximum of 8 digital temperature and humidity sensors (DHT11) (1), digital temperature and humidity sensors (DHT11 ) (1) Connect to the data collection subsystem by wireless.

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