CN209446461U - A kind of methane transducer - Google Patents

Abstract

The utility model discloses a kind of methane transducers, including shell, the front panel of shell is equipped with liquid crystal display, left plate is equipped with loudspeaker, upper plate is equipped with alarm lamp, bottom plate is equipped with CH_4 detection component and integrated mainboard afterwards, and integrated mainboard is electrically connected with liquid crystal display, loudspeaker and alarm lamp respectively；The utility model after shell by being arranged snakelike optical channel on bottom plate, the light path of infrared ray is increased, so that the sensitivity of infrared spectrum is improved, on the other hand due to there was only one layer of optical channel, therefore the space of methane transducer is prevented take up, therefore the essence for meeting methane transducer is small-sized.

Description

A kind of methane transducer

Technical field

The utility model relates to automation fields, more particularly to a kind of methane transducer.

Background technique

Working environment is severe under mine, and there are a large amount of methane, Yi Yinfa safety accident, thus methane transducer are coal mine peaces Indispensable one of tool in full inspection examining system.It is mostly installed at detection coal mine roadway, getting working face and return aircourse etc. Place, for monitoring the methane concentration in these places, when methane concentration is excessively high, methane transducer will sending sound, light report automatically It is alert, avoid safety accident.

Traditional methane detector mainly carries out eudiometry using black and white catalysis element, can not high temperature under mine, Long-term work under high humidity, environment dusty, is influenced, environmental suitability is poor by wind speed and pressure；Existing common infrared first Alkane probe replaces black and white to be catalyzed, that is, can avoid the above problem, but the sensitivity of existing most of infrared probe is poor, measurement accuracy It is low.

CN206300895U discloses a kind of CH_4 detection device, including be connected to methane gas environment reflection room, use In towards the infrared transmitter for emitting infrared light supply in the reflection room and for described in receiving and being reflected as the reflection room The detector of infrared light supply.The present invention improves the detection sensitivity of methane gas, this is the one of this field by extending light path Secondary beneficial trial.But to account for face big for the detection device of above-mentioned documents, is used in methane transducer and will increase methane sensing The volume of device.

Therefore those skilled in the art are dedicated to developing a kind of detection sensitivity height and methane transducer small in size.

Utility model content

In view of the above drawbacks of the prior art, the technical problem to be solved by the utility model is to provide a kind of methane biographies Sensor, is able to solve that existing methane transducer sensitivity is low or bulky problem.

To achieve the above object, the utility model provides a kind of methane transducer, including shell, on the front panel of shell Equipped with liquid crystal display, left plate is equipped with loudspeaker, and upper plate is equipped with alarm lamp, and rear bottom plate is equipped with CH_4 detection component sum aggregate At mainboard, integrated mainboard is electrically connected with liquid crystal display, loudspeaker and alarm lamp respectively；

CH_4 detection component includes RF transmitter, optical channel and detector, and serpentine-like surround of optical channel is opened in On the rear bottom plate of shell, optical channel inner surface, which is sticked, reflecting plate, and RF transmitter is set to the Single port of optical channel, detector Set on the another port of optical channel, detector is connect with integrated mainboard, and RF transmitter is equipped with infrared light supply, and infrared light supply is penetrated Ray obliquity out is radiated at optical channel inner wall.

Preferably, integrated mainboard is made of filtering and amplifying circuit, analog-digital converter and central processing unit, detector it is defeated Outlet is sequentially connected with filtering and amplifying circuit, analog-digital converter and central processing unit, central processing unit respectively with liquid crystal display Screen, loudspeaker are connected with alarm lamp.

Preferably, being in 135 ° between light and optical channel inner wall that infrared light supply projects.

Preferably, shell right side is equipped with charge port, charge port is electrically connected with the power supply.

Preferably, the one side of shell is equipped with handle.

Preferably, the light-emitting surface of infrared light supply is perpendicular always, the vertical height and optical channel height of perpendicular It is identical.

Preferably, being set on the bottom plate of shell there are two stabilizer blade, stabilizer blade is arranged with rubber sleeve outside.

Preferably, the rear plate outer side of shell is equipped with dust cover.

The utility model increases the light path of infrared ray, to mention by the way that snakelike optical channel is arranged on bottom plate after shell The sensitivity of high IR line spectrum prevents take up the space of methane transducer on the other hand due to there was only one layer of optical channel, because The essence that this meets methane transducer is small-sized.

Detailed description of the invention

Fig. 1 is the concrete structure schematic diagram of an embodiment of the present invention；

Fig. 2 is another view stereo structural schematic diagram of Fig. 1；

Fig. 3 is the schematic diagram of internal structure of the utility model；

Fig. 4 is the schematic perspective view at another visual angle Fig. 3；

Fig. 5 is the schematic view of the front view of Fig. 3；

Fig. 6 is the enlarged structure schematic diagram in Fig. 3 at F；

The circuit diagram of Fig. 7 the utility model；

1- shell；2- liquid crystal display；3- loudspeaker；5- alarm lamp；

6- CH_4 detection component；61- RF transmitter；62- optical channel；63- detector；64- infrared light supply；

7- integrated mainboard；71- filtering and amplifying circuit；72- analog-digital converter；73- central processing unit；

8- power supply；9- handle；10- stabilizer blade.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples,

As shown in Figures 1 to 5, the front panel of a kind of methane transducer, including shell 1, shell 1 is equipped with liquid crystal display 2, left plate is equipped with loudspeaker 3, and upper plate is equipped with alarm lamp 5, and rear bottom plate is equipped with CH_4 detection component 6 and integrated mainboard 7, collection It is electrically connected respectively with liquid crystal display 2, loudspeaker 3 and alarm lamp 5 at mainboard 7；

CH_4 detection component 6 includes RF transmitter 61, optical channel 62 and detector 63, the serpentine-like ring of optical channel 62 On the rear bottom plate for being opened in shell 1,62 inner surface of optical channel is sticked and has reflecting plate, and RF transmitter 61 is set to optical channel 62 Single port, detector 63 is set to the another port of optical channel 62, and detector 63 connect with integrated mainboard 7, RF transmitter 61 are equipped with infrared light supply 64, are in 135 ° between 62 inner wall of light and optical channel that infrared light supply 64 projects.

The utility model on rear bottom plate by being arranged one layer of snakelike optical channel, when the infrared light supply in RF transmitter After sending, since light is to tilt to penetrate the reflecting plate on 62 inner surface of optical channel, reflector meeting reflected light, therefore it is infrared Light source issue light can it is different it is interior between snakelike optical channel can reflect, to considerably increase the light path of infrared light.? In the detection of infrared spectroscopy, the length of light path directly determines the detection sensitivity of methane gas, and usual light path is longer, detects sensitive Degree is higher, therefore the utility model can effectively promote the sensitivity of methane gas detection, while also overcome optical length volume With regard to big drawback, the small property of essence of the accuracy and detecting instrument of detection is reached.

As shown in fig. 7, integrated mainboard 7 is made of filtering and amplifying circuit 71, analog-digital converter 72 and central processing unit 73, The output end of detector 63 is sequentially connected with filtering and amplifying circuit 71, analog-digital converter 72 and central processing unit 73, centre Reason device 73 is connect with liquid crystal display 2, loudspeaker 3 and alarm lamp 5 respectively；Integrated mainboard 7 and CH_4 detection component 6 are and power supply 8 connections.The detector of the utility model can be photoelectric detector, and after power supply is powered, photoelectric detector receives infrared light supply Optical signal can be switched to electric signal by optical signal, and by electric signal transmission to filtering and amplifying circuit, successively pass through analog to digital conversion circuit After be transmitted to central processing unit, the absorption spectra of methane to be measured is converted electrical signals to by central processing unit, then and at center Reason device setting data compare, and obtain the ingredient and content of methane to be measured, and show corresponding air by liquid crystal display In contained methane concentration.It has been more than the alarm point of setting, then the loudspeaker on warning circuit can issue alarm if too high levels Sound, alarm lamp then can be bright, to show concentration over-standard.

1 right side of shell is equipped with charge port 4, and charge port 4 and power supply 8 are electrically connected, and convenient for charging to power supply, improves The practical convenience of the utility model.

The one side of shell 1 be equipped with handle 9, be easy to use in pick up mobile methane transducer.The bottom plate of shell 1 is equipped with Two stabilizer blades 10, stabilizer blade 10 are arranged with rubber sleeve outside.It is convenient for, is placed on ground convenient for consolidate the utility model；Shell 1 Plate outer side is equipped with dust cover (not shown) afterwards, is conducive to place dust, improves the physical life of the utility model.

As shown in fig. 6, the light-emitting surface of infrared light supply 64 is perpendicular always, the vertical height and optical channel of perpendicular 62 height are identical, and infrared light sources are all reflected in optical channel, the waste of light source is on the one hand avoided, and reduce Power consumption；On the other hand, the accuracy of detection is improved.

In use, only the utility model need to be placed in mine, the air in mine is filled up in this shell, in shell The starting of CH_4 detection component, infrared light supply issues infrared light, and infrared light multiple reflections back and forth in optical channel enter eventually into In detector, the optical signal received is switched to electric signal by detector, is successively passing through filtering and amplifying circuit and analog-digital converter, most Enter central processing unit eventually, central processing unit carries out processing analysis to data, and the results are shown on liquid crystal display, if first The concentration of alkane is higher than the alarming value of setting, then the circuit between loudspeaker and alarm lamp and central controller is connected, and issues alarm Signal.

The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain Available technical solution is tested, it all should be within the scope of protection determined by the claims.

Claims (8)

1. a kind of methane transducer, including shell (1), it is characterized in that: the front panel of the shell (1) is equipped with liquid crystal display (2), left plate is equipped with loudspeaker (3)；Upper plate is equipped with alarm lamp (5), and rear bottom plate is equipped with CH_4 detection component (6) and integrated Mainboard (7)；The integrated mainboard (7) is electrically connected with the liquid crystal display (2), loudspeaker (3) and alarm lamp (5) respectively；

The CH_4 detection component (6) includes RF transmitter (61), optical channel (62) and detector (63)；The light is logical Serpentine-like surround in road (62) is opened on the rear bottom plate of the shell (1)；Inner surface is sticked the optical channel (62) reflecting plate； The RF transmitter (61) is set to the Single port of the optical channel (62), and the detector (63) is set to the optical channel (62) another port；The detector (63) connect with integrated mainboard (7)；The RF transmitter (61) is equipped with infrared light Source (64)；The Ray obliquity that the infrared light supply (64) is projected is radiated at the optical channel (62) inner wall.

2. methane transducer as described in claim 1, it is characterized in that: the integrated mainboard (7) by filtering and amplifying circuit (71), Analog-digital converter (72) and central processing unit (73) are constituted；The output end and the filtering and amplifying circuit of the detector (63) (71), analog-digital converter (72) and central processing unit (73) are sequentially connected；The central processing unit (73) respectively with the liquid Crystal display screen (2), loudspeaker (3) and alarm lamp (5) connection.

3. methane transducer as described in claim 1, it is characterized in that: light and the light that the infrared light supply (64) projects It is in 135 ° between channel (62) inner wall.

4. methane transducer as described in claim 1, it is characterized in that: the shell (1) right side is equipped with charge port (4)；Institute Charge port (4) and power supply (8) are stated to be electrically connected.

5. methane transducer as described in claim 1, it is characterized in that: the one side of the shell (1) is equipped with handle (9).

6. methane transducer as described in claim 1, it is characterized in that: the light-emitting surface of the infrared light supply (64) is vertical always Plane；The vertical height of the perpendicular is identical as the optical channel (62) height.

7. the methane transducer as described in claim 1 to 6 is any, it is characterized in that: there are two being set on the bottom plate of the shell (1) Stabilizer blade (10)；Rubber sleeve is arranged with outside the stabilizer blade (10).

8. the methane transducer as described in claim 1 to 6 is any, it is characterized in that: the rear plate outer side of the shell (1) is equipped with Dust cover.