CN203383856U

CN203383856U - Gas density wireless sensing and detecting device

Info

Publication number: CN203383856U
Application number: CN201320388860.8U
Authority: CN
Inventors: 郭业才; 邓静娴; 马路; 袁涛
Original assignee: Nanjing University of Information Science and Technology
Current assignee: Nanjing University of Information Science and Technology
Priority date: 2013-07-02
Filing date: 2013-07-02
Publication date: 2014-01-08
Anticipated expiration: 2023-07-02

Abstract

The utility model relates to a gas density wireless sensing and detecting device. The gas density wireless sensing and detecting device comprises an on-site detecting part and a handheld display device, wherein the on-site detecting part and the handheld display part are wirelessly communicated with each other through a wireless receiving module and a wireless transmitting module; the on-site detecting part is composed of a main control module, a gas density sensor, a temperature and humidity sensor, a power module and the wireless transmitting module, can detect gas density, and environmental temperature as well as humidity and can transmit the detected gas density and environmental temperature as well as humidity to the handheld display part; the handheld display part is composed of a main control module, the wireless receiving module, a liquid crystal display module and a power module, can receive a signal from the on-site detecting part and can display the gas density, and the environmental temperature as well as humidity through the liquid crystal display module. The gas density wireless sensing and detecting device passes the practical operation, achieves high data precision, good stability, low cost, and relatively easy realization of hardware circuits.

Description

A kind of wireless sensing methane Concentration Measurement device

Technical field

The utility model relates to a kind of methane Concentration Measurement instrument technical field, relates in particular to gas density, the measuring technique of environment temperature and humidity.

Technical background

Chinese coal output is high to rank first in the world, and country, always using the safety in production in colliery as the most important thing, gives the attention of height.Gas explosion accident in coal industry is the formidable enemy of Safety of Coal Mine Production all the time, and oneself becomes the principal element of restriction Safety of Coal Mine Production at present.Therefore, detect in real time the change in concentration of methane gas, to the mine safety operation, personal safety and environmental protection have very important effect.

The comparison in equipment detected for gas in current domestic mine falls behind, and these equipment investigative ranges are little, and the reaction time is long, and transfer of data adopts wired mode, and cost is high, power consumption is high and the characteristics of very flexible.Therefore the novel gas of developing a kind of integrated, intelligent, miniaturization, wireless penetration detects source of early warning to strengthening the safety monitoring ability of mine, promotes the safety in production of coal industry and protects the people's property safety to have important practical significance.

Summary of the invention

Technical problem to be solved in the utility model is the deficiency for the above-mentioned background technology, has designed a kind of wireless sensing methane Concentration Measurement device.

concrete technical scheme of the present utility model is as follows:

A kind of wireless sensing methane Concentration Measurement device is characterized in that: it comprises Site Detection part and the large module of hand-held demonstration part two, and Site Detection part and hand-held demonstration part are carried out radio communication by wireless transmitter module and wireless receiving module.

Wherein the Site Detection part is comprised of main control module, gas concentration sensor, Temperature Humidity Sensor, power module, wireless sending module, wherein gas concentration sensor, Temperature Humidity Sensor and wireless sending module are connected with main control module respectively, power module and four power supplies are joined, and can detect gas density, ambient temperature and humidity and send the portion of the handle module to by wireless sending module.

The portion of the handle module is comprised of main control module, wireless receiving module, LCD MODULE, power module, and wherein wireless receiving module is connected with main control module respectively with LCD MODULE, and power module is powered and is connected with the three.The signal that Site Detection partly sends be can receive, and gas density, ambient temperature and humidity shown by LCD MODULE.

The gas concentration sensor model of Site Detection part is MQ-5, and the digital hygro sensor model is DHT11, detects respectively gas density and ambient temperature and humidity.

The main control module of Site Detection part is comprised of single-chip microcomputer STC12C5A60S2, crystal oscillating circuit and LED tally circuit.The LED tally circuit is connected with 10 pin of single-chip microcomputer STC12C5A60S2.The crystal oscillator module is connected with 18,19 pin of single-chip microcomputer STC12C5A60S2.

The data signal transmission that wireless transmitter module nRF24L01 will process through single-chip microcomputer STC12C5A60S2 is to hand-held demonstration part; 3,4,5 pin of wireless transmitter module nRF24L01 are connected with P1.0, P1.1, the P1.2 interface of single-chip microcomputer STC12C5A60S2 respectively, and the 6-8 pin is connected with the P1.3-P1.5 mouth of single-chip microcomputer STC12C5A60S2 respectively.3,4,5 pin of receiver module nRF24L01 module are connected with P1.0, P1.1, the P1.2 interface of single-chip microcomputer STC89C52 chip respectively, and the 6-8 pin is connected with the P1.3-P1.5 mouth of single-chip microcomputer STC89C52 chip respectively.

LCD MODULE LCD1602, be used for showing gas density, humiture.The 7-14 pin of LCD MODULE LCD1602 is connected with the P0.0-P0.7 mouth of single-chip microcomputer STC89C52 chip respectively.

Differentiate detector running status, the running status of knowing detector easily and effectively with the LED signal lamp.

the utlity model has following advantage:

The wireless sensing methane Concentration Measurement device of the utility model design,, good stability high by actual motion, data precision, cost are low, easy to use, and hardware circuit is easier to realize.

The accompanying drawing explanation

Fig. 1 is the methane Concentration Measurement structure drawing of device;

Fig. 2 is MQ-5 gas sensor module circuit diagram;

Fig. 3 is situ part single-chip microcomputer STC12C5A60S2 pinouts;

Fig. 4 is LED tally circuit figure;

Fig. 5 is the crystal oscillating circuit schematic diagram;

Fig. 6 is Site Detection module whole circuit diagram;

Fig. 7 is portion of the handle single-chip microcomputer STC89C52 pinouts;

Fig. 8 is nRF24L01 wireless transmission/reception module circuit diagram;

Fig. 9 is Temperature Humidity Sensor DHT11 circuit diagram.

The specific embodiment

Technical scheme below in conjunction with accompanying drawing to the design is elaborated:

As shown in Figure 1, wireless sensing methane Concentration Measurement device of the present utility model comprises: it comprises Site Detection part and the large module of hand-held demonstration part two, wherein the Site Detection part is comprised of main control module, gas concentration sensor, Temperature Humidity Sensor, power module, wireless sending module, can detect gas density, ambient temperature and humidity and send the portion of the handle module to by wireless sending module.The portion of the handle module is comprised of main control module, wireless receiving module, LCD MODULE, power module, can receive the signal that Site Detection partly sends, and shows gas density, ambient temperature and humidity by LCD MODULE.

The main control module of Site Detection part is comprised of single-chip microcomputer STC12C5A60S2, crystal oscillating circuit, power circuit and LED tally circuit.The pin of single-chip microcomputer STC12C5A60S2 chip as shown in Figure 2.The LED tally circuit as shown in Figure 3, is connected with 10 pin of single-chip microcomputer STC12C5A60S2.The crystal oscillator module as shown in Figure 4, is connected with 18,19 pin of single-chip microcomputer;

The gas sensor module model of Site Detection part is MQ-5, and as shown in Figure 5, its MQ5 pin is connected with the 7th pin of single-chip microcomputer STC12C5A60S2, the gas density be used in testing environment.

Fig. 6 is the wireless transmission/reception module, refers to two-part wireless receiving module and wireless transmitter module, all adopts the nRF24L01 chip.Test section nRF24L01 is as wireless transmitter module at the scene, its the 3rd, 4,5 pin is connected with P1.0, P1.1, the P1.2 interface of single-chip microcomputer STC12C5A60S2 chip respectively, the 6-8 pin is connected with the P1.3-P1.5 mouth of STC12C5A60S2 respectively, and its effect is that the data signal transmission that will process through single-chip microcomputer STC12C5A60S2 is to hand-held demonstration part.In hand-held demonstration part, nRF24L01 is as receiver module, and its 3rd, 4,5 pin is connected with P1.0, P1.1, the P1.2 mouth of single-chip microcomputer STC89C52 chip respectively, and the 6-8 pin is connected with the P1.3-P1.5 interface respectively.

Fig. 7 is DHT11 Temperature Humidity Sensor circuit diagram, the temperature and the humidity that are used in testing environment, and it is connected with the P1.7 mouth of single-chip microcomputer STC12C5A60S2.

As shown in Figure 8, the crystal oscillator module as shown in Figure 5, is connected with 18,19 pins of single-chip microcomputer STC89C52 the pin of the single-chip microcomputer STC89C52 chip of hand-held demonstration part;

Fig. 9 is the LCD1602 LCD MODULE, and the 7-14 pin of this chip is connected with the P0.0-P0.7 mouth of single-chip microcomputer STC89C52 chip respectively, is used for gas density, temperature and humidity in display environment.

Claims

1. a wireless sensing methane Concentration Measurement device, it is characterized in that: it comprises Site Detection part and the large module of hand-held demonstration part two, wherein the Site Detection part is comprised of main control module, gas concentration sensor, Temperature Humidity Sensor, power module, wireless sending module, wherein gas concentration sensor, Temperature Humidity Sensor and wireless sending module are connected with main control module respectively, and power module and four power supplies are joined; The portion of the handle module is comprised of main control module, wireless receiving module, LCD MODULE, power module, and wherein wireless receiving module is connected with main control module respectively with LCD MODULE, and power module is powered and is connected with the three; Site Detection part and hand-held demonstration part are by described wireless transmitter module and wireless receiving module communication connection.

2. wireless sensing methane Concentration Measurement device according to claim 1 is characterized in that: the gas concentration sensor model of Site Detection part is MQ-5, and the digital hygro sensor model is DHT11.

3. wireless sensing methane Concentration Measurement device according to claim 1 is characterized in that: the main control module of Site Detection part is comprised of single-chip microcomputer, crystal oscillating circuit, and the single-chip microcomputer model is STC12C5A60S2.

4. wireless sensing methane Concentration Measurement device according to claim 1, it is characterized in that: described wireless transmitter module and wireless receiving module all adopt the nRF24L01 chip.

5. wireless sensing methane Concentration Measurement device according to claim 1 is characterized in that: hand-heldly show that the main control module of part is comprised of single-chip microcomputer, crystal oscillating circuit, the single-chip microcomputer model is STC89C52.

6. wireless sensing methane Concentration Measurement device according to claim 1 is characterized in that: hand-heldly show that the LCD MODULE model of part is LCD1602.