CN206556194U - A kind of air detection instrument with Xingfeng capsule - Google Patents

Abstract

Go to disturb circuit the utility model discloses a kind of air detection instrument with Xingfeng capsule, including central processing element U, gas sensor S, air-blower control unit R, direct current regulation circuit and filtering；Described central processing element U driving gas sensor S, carry out air data detection, and after software control algorithm is calculated, output control signal gives control unit R, so as to reach that control VMC starts, closed and air quantity regulation；High voltage stable conversion is that low-voltage is powered to gas sensor by direct current regulation circuit, it is ensured that gas accuracy in detection and precision；Filtering, which goes to disturb circuit, prevents the data transfer between bus voltage influence of fluctuations air-blower control unit R and central processing element U.The utility model reduces gas sensor power consumption and heating, increases the service life；And go to disturb circuit using filtering and prevent the data transfer between bus voltage influence of fluctuations gas sensor S, Xingfeng capsule unit and central processing element, make systematic function more stable reliable.

Description

A kind of air detection instrument with Xingfeng capsule

Technical field

The utility model belongs to instrument field, is related to air quality detector, and in particular to a kind of band Xingfeng capsule Air detection instrument.

Background technology

The air pollution that we survive is increasingly serious, and interior endures finishing pollution, such as formaldehyde, TVOC to the fullest extent, and outdoor endures mist to the fullest extent Haze pollutes, and main component is PM2.5, seriously endangers our healthy.Particularly old man, child, physical disabilities, externally dirty Dye is in automatism mostly, and is easier to come to harm.Air detection instrument collection formaldehyde in air, PM2.5, TVOC etc. have Evil content of material, and content is shown in digital form, it is exceeded, alarm, help people away from pollution, improvement of adopting an effective measure Pollution.

Traditional air detection instrument only has data display, points out harmful substance to transfinite report by display or voice mode It is alert, coordinated signals mechanism is had no, now people can only manually open cleaning system, eliminated air harmful substance, Therefore a air detection instrument with Xingfeng capsule is developed very urgent.

The content of the invention

There is provided a kind of air detection with Xingfeng capsule aiming at the deficiencies in the prior art for the purpose of this utility model Instrument, enables detector automatic linkage to control the demand of family's VMC.Detection linkage Xingfeng capsule circuit is real for detection data When coordinated signals VMCs guarantee is provided.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is：

A kind of air detection instrument with Xingfeng capsule, including central processing element U, gas sensor S, air-blower control unit R, direct current regulation circuit and filtering go to disturb circuit；Described central processing element U driving gas sensor S, carry out air data Detection, and after software control algorithm is calculated, output control signal gives control unit R, so as to reach that control VMC is opened Dynamic, closing and air quantity regulation；High voltage stable conversion is that low-voltage is powered to gas sensor by direct current regulation circuit, it is ensured that gas Body accuracy in detection and precision；Filtering, which removes to disturb circuit, prevents bus voltage influence of fluctuations air-blower control unit R and center processing core Data transfer between piece U.

Eight data pins of the central processing element are connected with eight data pins of gas sensor respectively；Center The synchronous pin E/RD# pin E/RD#s synchronous with gas sensor of process chip, the 5th go the other end for disturbing TVS pipe T5 to connect Connect；The read-write pin W/R# of the central processing element and read-write pin W/R# of gas sensor, the 3rd go to disturb TVS pipe T3's The other end is connected；The command pin D/C# of the central processing element and command pin D/C# of gas sensor, the 4th go to disturb TVS pipe T4 other end connection；The reset pin RES# of the central processing element and reset pin RES# of gas sensor, first go to disturb TVS pipe T1 other end connection；The chip select pin CS# of the central processing element and chip select pin CS# of gas sensor, second go Disturb TVS pipe T2 other end connection.The Low pins of central processing element are connected with the Low pins of Xingfeng capsule unit R；Center The Middle pins of process chip are connected with the Middle pins of Xingfeng capsule unit R；The Hi pins of central processing element with it is new The Hi pins connection of air control unit R；

Described filtering removes to disturb circuit and removes to disturb TVS pipe T1 including first, second removes to disturb TVS pipe T2, the 3rd goes to disturb TVS pipe T3, the 4th, which go to disturb TVS pipe T4 and the 5th, to go to disturb TVS pipe T5；First removes to disturb TVS pipe T1, second removes to disturb TVS pipe T2, the 3rd goes to disturb TVS pipe T3, the 4th, which go to disturb TVS pipe T4 and the 5th, goes to the one end for disturbing TVS pipe T5 to be grounded.

Described direct current regulation circuit includes power voltage step down chip U1, the first regulating resistor R1, the second regulating resistor R2, the One input capacitance C1, the second input capacitance C2, the first decoupling compensating electric capacity CD1, the second decoupling compensating electric capacity CD2, load inductance CL1 and protection diode D8.The power input pin VIN and input power P of the power voltage step down chip U1, the first decoupling compensation One end connection of electric capacity CD1 positive pole, the second input capacitance C2；The enable pin of the power voltage step down chipWith ground pin Negative pole, the second input capacitance C2 other ends of the GND with the first decoupling compensating electric capacity CD1 are connected and are grounded；The power supply drop Press the feedback pin FB and the first regulating resistor R1 of chip one end, the second regulating resistor R2 one end, the first input capacitance C1 One end connection, the first regulating resistor R1 the other end ground connection；The second regulating resistor R2 other end and the first input capacitance C1 The other end, load inductance CL1 one end, the second decoupling compensating electric capacity CD2 positive pole connection and out-put supply D, out-put supply D It is connected with central processing element U power input pin VCC；The voltage output pin VOUT of the power voltage step down chip and protection The other end connection of diode D8 negative pole, load inductance CL1；Protection diode D8 positive pole, the second decoupling compensating electric capacity CD2 Negative pole be grounded.

Preferably, the central processing element U uses STM32F103VCT6 chips.

The beneficial effects of the utility model：

Using above-mentioned technical proposal, gas sensor can be independently driven, gas sensor meets multiple signals and gathered simultaneously, And collecting efficiency is high；High voltage is converted into the low-voltage of suitable gas sensor by direct current regulation circuit, reduces gas sensor Power consumption and heating, service life are lengthened significantly；Filtering, which goes to disturb circuit, prevents bus voltage influence of fluctuations gas sensor S, fresh air Data transfer between control unit and central processing element, makes systematic function more stable reliable.

Brief description of the drawings

Fig. 1 is system construction drawing of the present utility model；

Fig. 2 is central processing element circuit diagram of the present utility model；

Fig. 3 is the circuit diagram of gas sensor in the utility model；

Fig. 4 uses new middle Xingfeng capsule element circuit figure for this；

Fig. 5 goes to disturb the circuit diagram of circuit for filtering in the utility model；

Fig. 6 is the circuit diagram of direct current regulation circuit in the utility model.

Embodiment

Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.Herein it should be noted that Explanation for these embodiments is used to help understand the utility model, but does not constitute to restriction of the present utility model.This Outside, as long as technical characteristic involved in each embodiment of the utility model disclosed below does not constitute conflict each other It can just be mutually combined.

The utility model provides a kind of air detection instrument with Xingfeng capsule, as shown in Figures 1 to 6, including centre Reason chip U, gas sensor S, Xingfeng capsule unit R, direct current regulation circuit 1 and filtering go to disturb circuit 2；Central processing element U Gas sensor is driven, filtering goes to disturb the removal gas sensor of circuit 2 S, Xingfeng capsule unit R and central processing element U data High voltage is converted into low-voltage and powered to gas sensor by interference signal during transmission, direct current regulation circuit 1.Center processing core Piece U uses STM32F103VCT6 chips；Filtering removes to disturb circuit 2 and removes to disturb TVS pipe T1 including first, second goes to disturb TVS pipe T2, the Three remove to disturb TVS pipe T3, the 4th go to disturb TVS pipe T4 and the 5th and go to disturb TVS pipe T5；First removes to disturb TVS pipe T1, second goes to disturb TVS pipe T2, the 3rd remove to disturb TVS pipe T3, the 4th go to disturb TVS pipe T4 and the 5th and go to the one end for disturbing TVS pipe T5 to be grounded.

In the utility model, central processing element U the first data pin D0 and gas sensor L the first data pin Second data pin D1 connections of D0 connections, the second data pin D1 and gas sensor, the 3rd data pin D2 is passed with gas 3rd data pin D2 connections of sensor, the 4th data pin D3 connections of the 4th data pin D3 and gas sensor, the 5th 6th number of data pin D4 and gas sensor the 5th data pin D4 connections, the 6th data pin D5 and gas sensor According to pin D5 connections, the 7th data pin D6 connections of the 7th data pin D6 and gas sensor, the 8th data pin D7 with 8th data pin D7 connections of gas sensor；The synchronous pin E/RD# of central processing element is synchronous with gas sensor Pin E/RD#, the 5th go to disturb TVS pipe T5 other end connection；The read-write pin W/R# and gas sensor of central processing element Read-write pin W/R#, the 3rd other end connection for removing to disturb TVS pipe T3；The command pin D/C# of central processing element is passed with gas The command pin D/C# of sensor, the 4th go to disturb TVS pipe T4 other end connection；The reset pin RES# and gas of central processing element The reset pin RES# of body sensor, first go to disturb TVS pipe T1 other end connection；The chip select pin CS# of central processing element Chip select pin CS# with gas sensor, second go the other end for disturbing TVS pipe T2 to be connected.

As shown in figs. 1 and 6, direct current regulation circuit 1 includes power voltage step down chip U1, the first regulating resistor R1, the second pressure regulation Resistance R2, the first input capacitance C1, the second input capacitance C2, the first decoupling compensating electric capacity CD1, the second decoupling compensating electric capacity CD2, Load inductance CL1 and protection diode D8；Power voltage step down chip U1 uses LM2596-ADJ chips.The 1 of power voltage step down chip U1 Pin is connected with input power P, the first decoupling compensating electric capacity CD1 positive pole, the second input capacitance C2 one end；Power voltage step down core Negative pole, the second input capacitance C2 other end of 3 pins and 5 pins of piece with the first decoupling compensating electric capacity CD1 are connected and connect Ground；4 pins of power voltage step down chip and the first regulating resistor R1 one end, the second regulating resistor R2 one end, the first input electricity Hold C1 one end connection, the first regulating resistor R1 other end ground connection；The second regulating resistor R2 other end and the first input electricity Hold the C1 other end, load inductance CL1 one end, the second decoupling compensating electric capacity CD2 positive pole connection and out-put supply D, output Power supply D is connected with central processing element U power input pin VCC；2 pins of power voltage step down chip are with protection diode D8's The other end connection of negative pole, load inductance CL1；Protection diode D8 positive pole, the second decoupling compensating electric capacity CD2 negative pole connect Ground.

The operation principle of the air detection instrument of the Xingfeng capsule：

The air detection instrument of the Xingfeng capsule can independently drive gas sensor and new using high-performance central process chip Wind control unit, makes gas sensor meet multiple signals and gathers simultaneously, and collecting efficiency is high, and Xingfeng capsule unit is stable can Lean on；It compensate for defect of the conventional air detector without coordinated signals function.To ensure that air detection instrument can be long-term with VMC Steady operation, in addition to central processing element and the gas sensor collection of core are accurate and accurate, also needs to combine DC voltage-stabilizing electricity Road and filtering go to disturb circuit.High voltage is converted into the low-voltage of suitable gas sensor by direct current regulation circuit, and reduction gas is passed Sensor shows power consumption and heating, and service life is lengthened significantly.Due to central processing element and gas sensor, Xingfeng capsule unit Between bus data transfer require high, filtering need to be increased and go to disturb circuit, bus voltage influence of fluctuations gas sensor is prevented, new Data transfer between wind control unit and central processing element, upsets gas sensor acquisition function, it is ensured that Xingfeng capsule list First operation steady in a long-term.

Claims (4)

1. a kind of air detection instrument with Xingfeng capsule, it is characterised in that：Including central processing element U, gas sensor S, wind Machine control unit R, direct current regulation circuit and filtering go to disturb circuit, and the central processing element U driving gas sensors S carries out empty Gas Data Detection, and after being calculated by software control algorithm, output control signal gives control unit R, to reach control fresh air system Startup, closing and the air quantity regulation of system, the direct current regulation circuit are used to power to the stable buck of gas sensor, and filtering is gone Disturbing circuit is used to prevent the data transfer between bus voltage influence of fluctuations air-blower control unit R and central processing element U；It is described Eight data pins of central processing element are connected with eight data pins of gas sensor respectively；Central processing element it is same Step pin E/RD# pin E/RD#s synchronous with gas sensor, the 5th go to disturb TVS pipe T5 other end connection；The centre The read-write pin W/R# of the reason chip and read-write pin W/R# of gas sensor, the 3rd go the other end for disturbing TVS pipe T3 to connect；In The command pin D/C# of the process chip and command pin D/C# of gas sensor, the 4th is entreated to go the other end for disturbing TVS pipe T4 to connect Connect；The reset pin RES# of the central processing element and reset pin RES# of gas sensor, first go to disturb the another of TVS pipe T1 End connection；The chip select pin CS# of the central processing element and chip select pin CS# of gas sensor, second go to disturb the another of TVS pipe T2 One end is connected；The Low pins of central processing element are connected with the Low pins of Xingfeng capsule unit R；Central processing element Middle pins are connected with the Middle pins of Xingfeng capsule unit R；The Hi pins of central processing element and Xingfeng capsule unit R Hi pins connection.

2. a kind of air detection instrument with Xingfeng capsule according to claim 1, it is characterised in that：Described filtering goes to disturb Circuit removes to disturb TVS pipe T1 including first, second removes to disturb TVS pipe T2, the 3rd removes to disturb TVS pipe T3, the 4th goes to disturb TVS pipe T4 and the 5th Go to disturb TVS pipe T5；First go to disturb TVS pipe T1, second go to disturb TVS pipe T2, the 3rd go to disturb TVS pipe T3, the 4th go to disturb TVS pipe T4 and 5th goes to the one end for disturbing TVS pipe T5 to be grounded.

3. a kind of air detection instrument with Xingfeng capsule according to claim 2, it is characterised in that：Described DC voltage-stabilizing Circuit includes power voltage step down chip U1, the first regulating resistor R1, the second regulating resistor R2, the first input capacitance C1, the second input Electric capacity C2, the first decoupling compensating electric capacity CD1, the second decoupling compensating electric capacity CD2, load inductance CL1 and protection diode D8；It is described Power voltage step down chip U1 power input pin VIN and input power P, the first decoupling compensating electric capacity CD1 positive pole, the second input Electric capacity C2 one end connection；The enable pin and ground pin GND of the power voltage step down chip decouple compensating electric capacity CD1 with first Negative pole, the second input capacitance C2 other end connects and is grounded；The feedback pin FB of the power voltage step down chip and first is adjusted Piezoresistance R1 one end, the second regulating resistor R2 one end, the first input capacitance C1 one end connection, the first regulating resistor R1's The other end is grounded；The second regulating resistor R2 other end and the first input capacitance C1 other end, load inductance CL1 one end, Second decoupling compensating electric capacity CD2 positive pole connection and out-put supply D, out-put supply D and central processing element U power input are drawn Pin VCC connections；The voltage output pin VOUT and protection diode D8 of the power voltage step down chip negative pole, load inductance CL1 The other end connection；Protection diode D8 positive pole, the second decoupling compensating electric capacity CD2 negative pole are grounded.

4. a kind of air detection instrument with Xingfeng capsule according to claim 3, it is characterised in that：The center processing core Piece U uses STM32F103VCT6 chips.