CN213181241U

CN213181241U - Novel inflation and deflation device

Info

Publication number: CN213181241U
Application number: CN202021717371.9U
Authority: CN
Inventors: 易劲松; 宋阳; 蒲为; 姚春; 何婧谊
Original assignee: Heli Technology Development Co ltd
Current assignee: Heli Technology Development Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-05-11
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a novel inflation and deflation device, which comprises an inflation structure, wherein the inflation structure is provided with an electric mechanism, and the electric mechanism is connected with an inflation pipe through a one-way valve; the inflatable structure is provided with a front-end data acquisition node, the front-end data acquisition node is provided with a CC2530 module, and the CC2530 module is provided with a nitrogen infrared analysis module and a temperature and humidity sensor; the utility model has the advantages that: the method has the advantages of high detection precision, good selectivity, high response speed, aging resistance, good anti-interference performance and the like, and greatly improves the stability of the optical platform.

Description

Novel inflation and deflation device

Technical Field

The utility model relates to an fill gassing device, specifically speaking are novel fill gassing device, belong to and fill the gassing device field.

Background

The core technology of the inflation and deflation device is a high-precision gas concentration detection module carried inside, and the accurate control of inflation and deflation can be realized only by accurate measurement of gas concentration. In the field of gas concentration detection instruments, foreign starts relatively early, and products for detecting gases such as carbon dioxide, carbon monoxide, methane and the like are developed successively. Most of the products realize gas concentration detection based on detection methods such as gas chromatography, electrochemistry, infrared spectrum absorption method and the like. The method has the technical defects of low detection precision, slow control response, poor anti-interference performance and the like. Under the prior art condition, in the actual use process, the measurement precision is not enough, so that the control response of the air charging and discharging is low, the control automatic air charging and discharging precision is poor, and a certain influence is caused on the light path in the optical platform. The product adopts an infrared spectrum absorption method, when light irradiates gas molecules, the gas molecules can absorb radiation energy to trigger the vibration or rotation of the molecules, the dipole moment between the molecules is changed by the vibration or rotation, and then energy level transition is generated, so that the vibration energy level and the rotation energy level of the molecules are transited from a ground state to an excited state, infrared light in a specific wavelength region is absorbed, and the light intensity is weakened.

Disclosure of Invention

An object of the utility model is to design a novel fill gassing device, to certain high accuracy optical platform, accomplish the lectotype to light source, infrared detector through the light path system design to according to lambert-beer law, design out a neotype according to the automatic gassing chamber structure that fills of nitrogen gas concentration that measures, solved the accurate monitoring and the automatic control of inert gas content and filled the gassing problem in the light path passageway.

The technical scheme of the utility model is that:

a novel inflation and deflation device comprises an inflation structure, wherein the inflation structure is provided with an electric mechanism, the electric mechanism is connected with an inflation tube through a one-way valve, the inflation structure is an automatic inflation and deflation structure, works in cooperation with an electromagnetic valve, and stops inflation after certain air pressure is reached;

the inflatable structure is provided with a front-end data acquisition node, the front-end data acquisition node is provided with a CC2530 module, and the CC2530 module is provided with a nitrogen infrared analysis module and a temperature and humidity sensor;

the utility model discloses adopted on the hardware circuit design and used CC2530 module as the front end data acquisition node of control core, utilized CC2530 module to carry on nitrogen gas infrared analysis module, DHT22 temperature and humidity sensor to realize the real-time acquisition, the processing to nitrogen gas data and humiture on every side, both can realize low-power consumption data acquisition, can realize the real-time supervision and the processing of host computer to data again.

Furthermore, the infrared analysis module is a nitrogen gas concentration detection device based on an NDIR principle, the light path comprises an infrared light source, a gas chamber and a detector, an optical filter with the wavelength of 4.26 microns is selected as the wavelength of a detection channel of the nitrogen gas, an optical filter with the wavelength of 4.0 microns is selected as the wavelength of a reference channel, the detector converts a light intensity signal which is difficult to measure into a voltage signal which is easy to measure, the voltage value is received by the monitoring module, and the concentration value of the nitrogen gas can be calculated according to a gas concentration formula.

Furthermore, the inflatable structure is also provided with a light source driving circuit, the input of ADP3330 is 12V, the output is 5V, and voltage is provided for the light source and the whole circuit thereof. The input end and the output end of the three-terminal regulator ADP3330 are grounded and decoupled by using capacitors of 0.1 mu F and 220 mu F respectively, so that the oscillation of the regulator can be prevented, and the alternating current filtering effect is realized; the light source modulation square wave signal is output by a pin PA5 of an STM32F051K86 chip, when a pin PA5 outputs a high level, the triode is conducted in the forward direction, the IRL715 works, when a pin PA5 outputs a low level, the triode is cut off, the IRL715 is extinguished, so that the light source modulation of the 5V square wave signal with the duty ratio of 17% is realized, and the ADP3330 is adopted to drive the light source to carry out 5V voltage stabilization; and 5V square wave signals with the duty ratio of 17% are adopted for light source modulation, and the signals come from STM32F051K86 to control the on-off of the triode to complete the modulation of the light source.

When light irradiates gas molecules, the gas molecules absorb radiation energy to trigger the vibration or rotation of the molecules, the dipole moment among the molecules is changed through the vibration or rotation, and then energy level transition is generated, so that the vibration energy level and the rotation energy level of the molecules are transited from a ground state to an excited state, infrared light in a specific wavelength region is absorbed, and light intensity is weakened. The concentration of nitrogen is obtained by detecting the light absorption intensity according to the principle that a specific gas molecule selectively absorbs infrared light radiation of a specific wavelength. And the relay switch is controlled by combining the nitrogen concentration value to realize the closed-loop control of automatic flushing and air discharging.

The optical path system is designed to complete the model selection of the light source and the infrared detector, and a novel optical air chamber structure suitable for measuring the nitrogen concentration is designed according to the Lambert-beer law.

The utility model has the advantages that: according to the principle that specific gas molecules selectively absorb infrared light radiation with specific wavelength, the concentration of the gas is obtained by detecting the light absorption intensity, and a novel optical gas chamber structure suitable for measuring the nitrogen concentration is designed according to the Lambert-beer law. The method has the advantages of high detection precision, good selectivity, high response speed, aging resistance, good anti-interference performance and the like, thereby greatly improving the stability of the optical platform.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of a novel inflation/deflation device according to an embodiment of the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.

Example 1

As shown in fig. 1, a novel inflation and deflation device comprises an inflation structure, wherein the inflation structure is provided with an electric mechanism (the electric mechanism is a stepping motor, the stepping motor rotates to drive a valve to open and close after receiving an electric signal), the electric mechanism is connected with an inflation tube through a one-way valve, the inflation structure is an automatic inflation and deflation structure, works in cooperation with a solenoid valve, and stops inflation after reaching a certain air pressure.

The inflatable structure is provided with a front-end data acquisition node, the front-end data acquisition node is provided with a CC2530 module, and the CC2530 module is provided with a nitrogen infrared analysis module and a DHT22 temperature and humidity sensor;

the design of a hardware circuit adopts a front-end data acquisition node which takes a CC2530 module as a control core, and the CC2530 module is used for carrying a nitrogen infrared analysis module and a DHT22 temperature and humidity sensor to realize the real-time acquisition and processing of nitrogen data and ambient temperature and humidity, so that the low-power-consumption data acquisition can be realized, and the real-time monitoring and processing of data by an upper computer can be realized.

The infrared analysis module is a nitrogen gas concentration detection device based on an NDIR principle, a light path comprises an infrared light source, a gas chamber and a detector, a 4.26-micron-wavelength optical filter is selected as a detection channel wavelength of nitrogen gas, a 4.0-micron-wavelength optical filter is selected as a reference channel wavelength, a detector converts a light intensity signal which is difficult to measure into a voltage signal which is easy to measure, the voltage value is received by a monitoring module, and the concentration value of the nitrogen gas can be calculated according to a gas concentration formula.

The inflatable structure is also provided with a light source driving circuit, the structure and the connection relation of the light source driving design drawing are that the input of ADP3330 is 12V, the output is 5V, and voltage is provided for the light source and the whole circuit thereof. The input end and the output end of the three-terminal regulator ADP3330 are grounded and decoupled by capacitors of 0.1 mu F and 220 mu F respectively, so that the oscillation of the regulator can be prevented, and the alternating current filtering function is realized. The light source modulation square wave signal is output by a pin PA5 of an STM32F051K86 chip, when a pin PA5 outputs a high level, the triode is conducted in the forward direction, the IRL715 works, when a pin PA5 outputs a low level, the triode is cut off, the IRL715 is extinguished, and therefore the light source modulation of the 5V square wave signal with the duty ratio of 17% is achieved. ) The design of the method adopts ADP3330 to carry out 5V voltage stabilization driving on the light source; and 5V square wave signals with the duty ratio of 17% are adopted for light source modulation, and the signals come from STM32F051K86 to control the on-off of the triode to complete the modulation of the light source.

After the gas to be detected enters the infrared analysis module, the optical filter with the wavelength of 4.26 microns is selected as the wavelength of the detection channel of the gas to be detected, the optical filter with the wavelength of 4.0 microns is selected as the wavelength of the reference channel, the light intensity signal which is difficult to measure is converted into the voltage signal which is easy to measure by the detector, the voltage value is received by the monitoring module, and the concentration value of the gas to be detected can be calculated according to a gas concentration formula.

The infrared light source is used for providing a measuring signal for the system.

The gas chamber is used as an intermediate part for receiving the light source and the detector through the light path, and is also a main place for gas detection. The process of converting the concentration into the optical signal is also completely finished in the gas chamber,

the detector functions as a sensor to convert light energy into an electrical signal that can be easily measured.

The whole infrared analysis module is used for converting light energy absorbed by gas into an electric signal easy to measure, so that air inflow of an external valve is controlled.

In order to inhibit zero drift, the influence of external environmental factors is eliminated by adopting differential input in design, so that the obtained measurement result only reflects the absorption effect of the gas to be measured on the light intensity.

Claims

1. The utility model provides a novel fill gassing device which characterized in that: the inflatable structure is provided with an electric mechanism, and the electric mechanism is connected with an inflatable tube through a one-way valve; the inflatable structure is provided with a front-end data acquisition node, the front-end data acquisition node is provided with a CC2530 module, and the CC2530 module is provided with a nitrogen infrared analysis module and a temperature and humidity sensor.

2. The novel inflation and deflation device as claimed in claim 1, wherein: the light path of the infrared analysis module comprises an infrared light source, a gas chamber and a detector, an optical filter with the wavelength of 4.26 microns is selected as the wavelength of a detection channel of nitrogen gas, an optical filter with the wavelength of 4.0 microns is selected as the wavelength of a reference channel, a light intensity signal which is difficult to measure is converted into a voltage signal which is easy to measure by the detector, and the voltage value is received by the monitoring module.

3. The novel inflation and deflation device as claimed in claim 1, wherein: the inflatable structure is also provided with a light source driving circuit.