CN207964707U - A kind of micro radio intelligent gas detection device - Google Patents

Abstract

The utility model is related to a kind of micro radio intelligent gas detection devices, the device is made of gas detection probe, Detection Circuit, power circuit, shell and airscoop shroud, gas detecting element design is for convenience of the plug type gas detection probe replaced, the detection signal of detection probe acquisition is input to integrated microprocessor through simulation process front-end circuit and carries out data conversion and processing, and detection data is transferred to distal end backstage using the wireless communication line being set on integrated microprocessor.Circuit uses compact Integration Design, and the transmission of data is detected using wireless communication mode, realizes the micromation of detection device, and replaceable pop one's head in realizes the detection of various gases.The limitation of existing gas detection technology application scenarios and purposes is overcome, can apply, be with a wide range of applications under various harsh conditions.Simple in structure, power consumption is extremely low, probe is replaceable, and institute is of low cost, and performance is stablized, and is readily integrated into other various equipment.

Description

A kind of micro radio intelligent gas detection device

Technical field

The utility model belongs to gas detection equipment more particularly to a kind of intelligent wireless gas device for fast detecting.

Background technology

With the high speed development of economic and technical, and the maturation of intelligent sensor technology that is combined with microprocessor, make The application for obtaining intelligent gas detection device is more and more extensive.Especially in industrial production, warehouse logistics, national defense and military, the security people's livelihood Equal fields, the application of intelligent gas detection technique have wide foreground.

Existing gas sensor be divided into substantially by testing principle calorifics formula, electric chemical formula, semiconductor-type, chromatograph-type this It is several, wherein chromatography, mass spectrum formula apply in the lab, field application mostly uses semiconductor-type or electric chemical formula, output Signal majority is the transducer signal of 4-20mA or 0-5V, has part also to carry communication function, mostly uses RS485 or RS232 shapes Formula is transmitted using wired.Traditional gas detection technology mostly uses on-line measurement and data processing method, due to that cannot accomplish Micromation and wireless penetration, purposes and application scenarios are by very big limitation.Such as：Application No. is 201520304484.9 disclosures " a kind of Portable belt intelligent gas component detection apparatus ", including gas componant detection device ontology, ontology side is equipped with air inlet Mouthful, filter screen is equipped in air inlet, detection device ontology lower end is equipped with control panel, transparent guarantor is equipped with outside the control panel Shield, detection device ontology upper end are equipped with supporting rod, and the detection device is connected by supporting rod with digital display, institute It states detection device and is internally provided with gas componant detection device, data processing equipment, power supply, the detection device side is equipped with acousto-optic Alarm.And application No. is " modularization intelligent gas-detecting device " disclosed in 201210460619.1, including main control module, Display module, input module, output module, safe grid module, sensor assembly and power module composition, in specific implementation, It is made of three layers of display board layer, control panel layer and power panel layer overlaying structure, and the sensor of external detectable gas with various is visited Head.The gas-detecting device of the invention is also supported and host computer networking, can support more gases, multiple range detection.Said two devices Microprocessor control technology is all used, but because design structure is more complicated, volume is difficult to micromation, and people is needed to exist Execute-in-place, significantly limits its application scenarios and application field, is especially not applied for some high-risk occasions and narrow Space, it is also difficult to be integrated into other equipment.

Invention content

The utility model aim is, in view of the foregoing defects the prior art has, provides and is applicable to more scenes and can Detect a kind of micro radio intelligent gas detection device of multiple gases concentration.The present apparatus is by gas detecting element, simulation process Front-end circuit, the integrated microprocessor with wireless communication function, power supply, warning circuit, shell and airscoop shroud composition.Gas is quick Sensing unit design is being detected for convenience of the plug type gas detection probe of displacement with meeting the detection demand to multiple gases It is provided with netted airscoop shroud on shell outside probe.The detection signal of detection probe acquisition is defeated through simulation process front-end circuit Enter to integrated microprocessor and carry out data conversion and processing, and will using the wireless communication line being set on integrated microprocessor Detection data is transferred to distal end background process equipment.Since circuit uses compact Integration Design, wireless telecommunications side is utilized Formula is detected the transmission of data, realizes the micromation of detection device.Displacement multiple gases detection probe can be facilitated, realized The detection of various gases.Above-mentioned advantage overcomes the limitation of existing gas detection technology application scenarios and purposes, can be various severe Scene under the conditions of quarter and space application, are with a wide range of applications, widely used.And because simple in structure, power consumption is extremely low, It pops one's head in replaceable, so manufacturing cost and use cost is cheap.Performance is stablized, and is readily integrated into other various equipment.

A kind of micro radio intelligent gas detection device described in the utility model, the device is by gas detection probe, gas Physical examination slowdown monitoring circuit, power circuit, shell and airscoop shroud composition, in shell（5）Inside set gradually gas detection probe（1）, simulation Handle front-end circuit（8）, integrate micro-processor interface circuit（9）And power circuit（10）；The gas detection probe (1) is replaceable Gas with various sensing element（2）Multipurpose scanner, pass through gas detecting element（2）On element legs（18）The Electricity Federation of setting Jack（4）With displacement pedestal（3）Pedestal is replaced in connection（3）Pass through circuit board stabilizer blade（17）With simulation process front-end circuit（8）Electricity Connection；The Detection Circuit is by gas detecting element（2）, simulation process front-end circuit（8）With integrated micro-processor interface circuit（9） Composition；Simulation process front-end circuit（8）, integrated micro-processor interface circuit（9）And power circuit（10）Pass through circuit board stabilizer blade respectively （17）Electricity Federation, simulation process front-end circuit（8）In be built-in with dedicated signal processors（U1）, simulation process front-end circuit（8）'s Signal output end and integrated micro-processor interface circuit（9）Signal input part Electricity Federation；Integrated micro-processor interface circuit（9）In be built-in with it is integrated micro- Processor (U2), wherein being integrated with 12bit analog-digital converters, 16 bit processors, RAM, ROM, house dog, built-in oscillator, more I/O mouthfuls of position, 4 groups of serial line interfaces and wireless telecommunications control circuit, using microencapsulated, wireless telecommunications control circuit is by being built in Wireless communication antenna output gas detection data in circuit is to distal end backstage；The power circuit（10）In be integrated with power supply Manage integrated circuit（U3）, pass through power management integrated circuit（U3）To power circuit（10）The power management of full device is carried out, Battery（11）It is fixed on power circuit（10）In.

The wireless telecommunications control circuit exports wireless communication signals to distal end backstage using bluetooth wireless communication technology.

The shell（5）For cylinder-like structure, in shell（5）Side passes through screw thread（16）With airscoop shroud（6）Even Fixation is connect, in shell（5）The other side passes through screw thread（16）With capping（7）It is connected and fixed.

The power circuit（10）In battery（11）It is fixed to use easy-to-displaceable plug-in structure.

The power circuit（10）Plate body on be provided with wire hole（12）, corresponding position is provided in capping (7) Screw is perforated（13）, utilize fixed screw（14）It perforates across screw（13）It is screwed into power circuit（10）Plate body on wire hole （12）In, by shell（5）Interior circuit board and capping（7）It is tightened and secured by.

Description of the drawings

Fig. 1 is the internal structure sectional view of the utility model；

Fig. 2 is the circuit flow principle schematic of the utility model；

Fig. 3 is the signal processing circuit schematic diagram of the utility model；

Fig. 4 is the integrated micro-processor interface circuit schematic diagram of the utility model；

Fig. 5 is the power circuit principle figure of the utility model；

Fig. 6 is the integrated microprocessor printed circuit board positive and negative schematic diagram of the utility model；

Fig. 7 is the power circuit printed circuit board positive and negative schematic diagram of the utility model.

Legend：1, gas detection probe, 2, gas detecting element, 3, displacement pedestal, 4, Electricity Federation jack, 5, shell, 6, into Gas hood, 7, capping, 8, simulation process front-end circuit, 9, integrated micro-processor interface circuit, 10, power circuit, 11, battery, 12, wire hole, 13, screw is perforated, 14, fixed screw, 15, air admission hole, 16, screw thread, 17, circuit board stabilizer blade, 18, element legs, U1, specially With signal processor, U2, integrated microprocessor, U3, power management integrated circuit.

In Fig. 5：KK is power switch, and BT1 is power-supply battery, and VDD is 3V working powers, and C is capacitance, and R is resistance.

Specific implementation mode

The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions Determine specific embodiment.

Embodiment

A kind of micro radio intelligent gas detection device described in the utility model, the device is by gas detection probe, gas Physical examination slowdown monitoring circuit, power circuit, shell and airscoop shroud composition, set gradually gas detection probe 1, simulation process in shell 5 Front-end circuit 8 integrates micro-processor interface circuit 9 and power circuit 10；The gas detection probe 1 is that replaceable gas with various is sensitive The multipurpose scanner of element 2, the Electricity Federation jack 4 being arranged by the element legs 18 on gas detecting element 2 connect with displacement pedestal 3 It connects, displacement pedestal 3 passes through circuit board stabilizer blade 17 and 8 Electricity Federation of simulation process front-end circuit；The Detection Circuit is by gas Sensing element 2, simulation process front-end circuit 8 and integrated micro-processor interface circuit 9 form；Simulation process front-end circuit 8, integrated microprocessor Circuit 9 and power circuit 10 are built-in in simulation process front-end circuit 8 at special signal respectively by 17 Electricity Federation of circuit board stabilizer blade Manage device U1, the signal input part Electricity Federation of the signal output end of simulation process front-end circuit 8 and integrated micro-processor interface circuit 9；It is integrated micro- Integrated microprocessor U2 is built-in in processing circuit 9, wherein be integrated with 12bit analog-digital converters, 16 bit processors, RAM, ROM, House dog, built-in oscillator, I/O mouthfuls, 4 groups serial line interfaces of multidigit and wireless telecommunications control circuit, using microencapsulated, channel radio News control circuit by the wireless communication antenna output gas detection data that is built in circuit to distal end from the background, wireless telecommunications control Circuit processed exports wireless communication signals to distal end backstage using bluetooth wireless communication technology；It is integrated in the power circuit 10 Power management integrated circuit U3 carries out power circuit 10 by power management integrated circuit U3 the power management of full device, electricity Pond 11 is fixed on using easy-to-displaceable plug-in structure in power circuit 10；Wire hole 12 is provided on the plate body of power circuit 10, Corresponding position is provided with screw perforation 13 in capping 7, passes through screw perforation 13 to be screwed into power supply electricity using fixed screw 14 In wire hole 12 on the plate body on road 10, the circuit board in shell 5 is tightened and secured by with capping 7；The shell 5 is cylindrical shape Structure is connected and fixed in 5 side of shell by screw thread 16 and airscoop shroud 6,5 other side of shell by screw thread 16 with Capping 7 is connected and fixed；

As shown in Figure 1：The global design of the present apparatus is cylindrical-shaped structure, and gas detection probe is set gradually in shell 5 1, simulation process front-end circuit 8 integrates micro-processor interface circuit 9 and power circuit 10, and board design is to match with 5 internal diameter of shell Circular configuration, separated using circuit board stabilizer blade 17 between circuit board and fixed, shell 5 is in cylindrical structure, shell 5, airscoop shroud 6 All aluminum alloy materials is used to make with capping 7, the airscoop shroud 6 for being set to side is processed as netted domes, or in arch Intensive air hole is processed in structure, and screw thread 16, airscoop shroud 6 and capping 7 are threaded inside the both ends of cylindrical shell 5 On be also machined with screw thread structure corresponding with the screw thread of shell 5 16, the two is connect with shell 5 using screw thread 16 It is fixed, it can easily dismount；

On the plate body of the power circuit 10 of the other side in shell 5, it is reserved with position appropriate and opens and be machined with internal thread Wire hole 12, corresponding position is provided with screw perforation 13 in capping 7, passes through screw perforation 13 to be screwed into using fixed screw 14 In wire hole 12 on 10 plate body of power circuit, the circuit board in shell 5 is tightened and secured by with capping 7；

Gas detection probe 1 is made of gas detecting element 2 and displacement pedestal 3, to meet to the detections of multiple gases and Monitoring is specially provided with the displacement pedestal 3 for facilitating the plug displacement of multiple gases sensing element 2, according to standardized gas sensitization The parameter of the element legs 18 of element 2 corresponds to the position of 2 element legs 18 of gas detecting element on displacement pedestal 3, corresponding to add Work has fixed and connection gas detecting element 2 and the Electricity Federation jack 4 for replacing pedestal 3, by inserting the element of gas detecting element 2 Foot 18 is inserted into the Electricity Federation jack 4 of displacement pedestal 3, and the two is fixed simultaneously Electricity Federation, displacement pedestal 3 and 8 electricity of simulation process front-end circuit Connection；

As shown in Fig. 2,3,4,5：To reach the miniaturization of products, wireless penetration and the target of super low-power consumption, applied in design New integrated circuit technique, wireless communication technique and highly integrated designing technique, most of use of gas detecting element 2 meet the requirements Standard product, the gas detecting element of two electrodes and three electrodes can meet the requirements, and the circuit design of the present apparatus is supported Most of gas detecting element solves the acquisition and analysis of various gas key parameters；

Dedicated signal processors U1 in simulation process front-end circuit 8 uses dedicated IC, and american semiconductor public affairs can be used The chemical sensor application-specific integrated circuit produced is taken charge of, the circuit of the present apparatus provides between gas detecting element 2 and integrated micro-processor interface circuit 9 Complete signal path, can generate the scale current proportional to output voltage, be based at working electrode to provide Acquisition variable-current come detection gas concentration variation institute it is functional, the sensitivity of Support gas sensing element 2 is in 0.5--- The wider range of 9500Na/ppm, gamut conversion range is in 5---750uA current ranges, and simulation process front-end circuit 8 is also It is integrated with communication interface to be programmed, is used for the self diagnosis of analog processing circuit, the function of temperature-compensating, self-correcting.U1 is used The design optimization of micropower, operating voltage range can be less than 10uA in 2.7---5.25V wide-voltage ranges, current drain, In addition this circuit supports most of gas detecting element, configurable parameter design to solve adopting for various gas key parameters Collection and analysis, also built-in self-correcting function in dedicated signal processors U1；

The integrated microprocessor U2 of integrated micro-processor interface circuit 9 uses highly integrated wireless processor, is integrated with 12bit Analog-digital converter, 16 bit processors, RAM, ROM, house dog, built-in oscillator, I/O mouthfuls, 4 groups serial line interfaces of multidigit and channel radio The functions such as controller are interrogated, using microencapsulated, power supply is also microampere order, and signal processor U1 moulds are passed through in the variation of gas concentration Quasi- processing, linear grade convert electrical current into analog voltage, and analog voltage is then sent to integrated micro- place of integrated micro-processor interface circuit 9 Device U2 is managed, analog voltage is transformed into digital signal, wireless telecommunications control circuit is integrated in integrated micro-processor interface circuit 9, and Lead to the blue tooth wireless communication function built in it and passes the signal to distal end background devices；

To be convenient for changing battery 11, the battery 11 in power circuit 10 uses lithium matter button cell for the setting of power circuit 10 It is replaceable plug-in structure, battery 11 is fixed with power circuit 10 using battery deck and Electricity Federation, using pump as power supply Formula low ripple DC-DC micro powers, the power management of full device is carried out using power management integrated circuit U3, and overall efficiency is up to 95%, it can be ensured that realize full device super low-power consumption；

In integrated micro-processor interface circuit 9, the dedicated antenna met the requirements of the standard is directly integrated on circuit boards, letter is passed through Number transmission wireless penetration and integrated circuit integrated effect, and by data processing and control system be placed on distal end backstage implement Design, realize the micromation of gas-detecting device ontology；The present apparatus is provided with two kinds of communication modes of 1GHZ and 2.4GHZ, can It is selected according to the distance of distance and different application scenarios, the transmission of 1GHZ can reach 1 kilometer or so；

As shown in Figure 6,7：3 laminate of use of circuit board makes, and board design is circular, and diameter is slightly less than cylinder The internal diameter of shell 5, entire circuit are all integrated into 3 pieces of circuit boards, and circuit board uses printed circuit technology；

Present apparatus running background is in handheld device or PC, using built-in program, can easily allow user and intelligence Energy gas-detecting device interacts, and intelligent gas detection device is an open source system, and user can be according to different application demand With the actual conditions of application scenarios, it is arranged freely, changes parameter and instruction, the autonomous exploitation for carrying out function and perfect, to obtain Obtain more preferable application effect；

The workflow and principle of the micro radio intelligent gas detection device are as follows：

As shown in Figure 1, 2：Detected gas is flowed into gas detecting element 2, gas detecting element naturally by airscoop shroud 6 2 by the signal of the range of 0.5---9500Na/ppm, and gamut is converted to range in 5---750uA current signals, this signal is defeated Enter to dedicated signal processors U1, the functions such as the included programming corrections of U1, temperature-compensating, self diagnosis, U1 is by the input current of simulation The voltage signal that signal is converted to scale exports to function microprocessor U2, the U2 function microprocessor A/D that has been Embedded and turns Change, memory, calculating, the functions such as wireless telecommunications private radio microprocessor, signal is after microprocessor U2, the number of output Signal carries out distal end transmission by antenna, and the receiving device of remote signaling can use mobile phone, iPAD, PC, special machine etc. to carry The equipment of blue tooth interface, can at 50 meters after 4G signal transmissions are added in receiving terminal by the verification to present apparatus practical application High in the clouds computer is transferred data to realize, a standard component in Internet of Things application can be become.

All components of the present apparatus are all made of miniature patch encapsulation, to reduce size.In force, the circuit board of the present apparatus Diameter minimum has reached 29 millimeters of level, and housing outer diameter can reach 35 millimeters, and only 20 millimeters of height, volume and size are substantially Less than the intelligent gas detection device of existing similar function, the micromation of intelligent gas detection device is veritably realized.This Universality apparatus platform abundant switching performance and applied more can help user more quickly to apply and easily reality It applies, purposes and application prospect are boundless.

The above technical characteristic constitutes highly preferred embodiment of the present invention, is imitated with stronger adaptability and best implementation Fruit can increase and decrease inessential technical characteristic according to actual needs, to meet the needs of different situations.

Claims (5)

1. a kind of micro radio intelligent gas detection device, which is characterized in that the device is by gas detection probe, gas detection electricity Road, power circuit, shell and airscoop shroud composition, in shell（5）Inside set gradually gas detection probe（1）, simulation process front end Circuit（8）, integrate micro-processor interface circuit（9）And power circuit（10）；The gas detection probe (1) is replaceable gas with various Sensing element（2）Multipurpose scanner, pass through gas detecting element（2）On element legs（18）The Electricity Federation jack of setting（4） With displacement pedestal（3）Pedestal is replaced in connection（3）Pass through circuit board stabilizer blade（17）With simulation process front-end circuit（8）Electricity Federation；It is described Detection Circuit by gas detecting element（2）, simulation process front-end circuit（8）With integrated micro-processor interface circuit（9）Composition；Mould Quasi- processing front-end circuit（8）, integrated micro-processor interface circuit（9）And power circuit（10）Pass through circuit board stabilizer blade respectively（17）Electricity Federation, Simulation process front-end circuit（8）In be built-in with dedicated signal processors（U1）, simulation process front-end circuit（8）Signal output end With integrated micro-processor interface circuit（9）Signal input part Electricity Federation；Integrated micro-processor interface circuit（9）In be built-in with integrated microprocessor (U2), wherein being integrated with 12bit analog-digital converters, 16 bit processors, RAM, ROM, house dog, built-in oscillator, multidigit I/O Mouth, 4 groups of serial line interfaces and wireless telecommunications control circuit, using microencapsulated, wireless telecommunications control circuit is by being built in circuit In wireless communication antenna output gas detection data to distal end backstage；The power circuit（10）In be integrated with power management Integrated circuit（U3）, pass through power management integrated circuit（U3）To power circuit（10）Carry out the power management of full device, battery （11）It is fixed on power circuit（10）In.

2. a kind of micro radio intelligent gas detection device as described in claim 1, it is characterised in that the wireless telecommunications Control circuit exports wireless communication signals to distal end backstage using bluetooth wireless communication technology.

3. a kind of micro radio intelligent gas detection device as described in claim 1, it is characterised in that the shell（5）For Cylinder-like structure, in shell（5）Side passes through screw thread（16）With airscoop shroud（6）It is connected and fixed, in shell（5）The other side is logical Cross screw thread（16）With capping（7）It is connected and fixed.

4. a kind of micro radio intelligent gas detection device as described in claim 1, it is characterised in that the power circuit （10）In battery（11）It is fixed to use easy-to-displaceable plug-in structure.

5. a kind of micro radio intelligent gas detection device as described in claim 1, it is characterised in that the power circuit （10）Plate body on be provided with wire hole（12）, covering（7）Upper corresponding position is provided with screw perforation（13）, utilize fixed spiral shell Silk（14）It perforates across screw（13）It is screwed into power circuit（10）Plate body on wire hole（12）In, by shell（5）Interior circuit Plate and capping（7）It is tightened and secured by.