CN205644136U - Scavenger fan intelligence control system based on signal analog to digital conversion circuit - Google Patents
Scavenger fan intelligence control system based on signal analog to digital conversion circuit Download PDFInfo
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- CN205644136U CN205644136U CN201620254285.6U CN201620254285U CN205644136U CN 205644136 U CN205644136 U CN 205644136U CN 201620254285 U CN201620254285 U CN 201620254285U CN 205644136 U CN205644136 U CN 205644136U
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Abstract
The utility model discloses a scavenger fan intelligence control system based on signal analog to digital conversion circuit, including the singlechip, the data memory who all is connected with the singlechip, infrared ray sensor, power, signal analog to digital conversion circuit and integrated drive electronics, the gas sensor who is connected with signal analog to digital conversion circuit to and the scavenger fan that is connected with integrated drive electronics, signal analog to digital conversion circuit includes the regulator circuit that signaling conversion circuit that the input is connected and input and signaling conversion circuit's output is connected with gas sensor, the output of regulator circuit is connected with the singlechip. The utility model discloses a carry out analysis processes through the information of singlechip in to the scavenger fan application range of gas sensor and infrared ray sensor monitoring, realized that the control scavenger fan carries out the automation and opens and cut out, simultaneously, the effectual electric power resource of having practiced thrift.
Description
Technical field
The utility model relates to electronic applications, specifically, be a kind of based on signal analog to digital conversion circuit
Ventilation fan intelligence control system.
Background technology
The whole world is all constantly increasing because of the number that carbon monoxide poisoning is dead every year, and atmosphere draught-free is then
Cause the key factor of carbon monoxide poisoning.People cause carbon monoxide poisoning to prevent atmosphere draught-free
The generation of event, is just mounted with ventilation fan in the place such as narrow spaces such as toilet, corridor, kitchens, uses
To guarantee that indoor and extraneous air is circulated, reduce indoor CO (carbon monoxide converter) gas.But, existing
The many employings of ventilation fan are manually turned on and off, and often forget to turn on ventilation fan due to people, cause one
The frequent generation of carbon monoxide poisoning event.And people can forget to close ventilation fan after opening ventilation fan sometimes,
Thus cause the waste of electric power resource.
Therefore it provides the control system of a kind of open and close that can automatically control ventilation fan, become for this
The task of top priority of those skilled in the art.
Utility model content
The purpose of this utility model is overcome ventilation fan of the prior art not automatically turn on and close
Defect, it is provided that a kind of based on signal analog to digital conversion circuit ventilation fan intelligence control system.
This utility model is achieved through the following technical solutions: a kind of ventilation based on signal analog to digital conversion circuit
Fan intelligence control system, including single-chip microcomputer, the data storage being all connected with single-chip microcomputer, infrared ray sensing
Device, power supply, signal analog to digital conversion circuit and integrated drive electronics, be connected with signal analog to digital conversion circuit
Gas sensor, and the ventilation fan being connected with integrated drive electronics；Described signal analog to digital conversion circuit bag
Include the signaling conversion circuit that input is connected with gas sensor, and input and signaling conversion circuit is defeated
Go out the adjustment circuit that end is connected；The outfan of described adjustment circuit is connected with single-chip microcomputer.
Described signaling conversion circuit is by conversion chip U2, and negative pole is as the input, just of signaling conversion circuit
Polar capacitor C6, the P pole that pole is connected with the IN pin of conversion chip U2 after resistance R12 and conversion core
The diode D5, N that the CLK pin of sheet U2 is connected, N pole is connected with the positive pole of polar capacitor C6
Pole CLK pin with conversion chip U2 after resistance R11 is connected, P pole after resistance R10 with two poles
The diode D4 that the N pole of pipe D5 is connected, and positive pole is connected with the N pole of diode D4, negative pole
The polar capacitor C7 composition being connected with the OPIN pin of conversion chip U2 after resistance R14；Described turn
Change the GND pin ground connection of chip U2, its AL pin and SW pin and OUT pin and COMP
Pin is collectively forming the outfan of signal conversion electricity.
Described adjust electricity routing amplifier P, audion VT3, P pole after resistance R18 with audion VT3
The diode that emitter stage is connected, N pole is connected with the AL pin of conversion chip U2 after resistance R13
D6, positive pole P pole with diode D6 after resistance R19 is connected, the outfan of negative pole and amplifier P
The polar capacitor C9 being connected, negative pole is connected with the base stage of audion VT3, positive pole and conversion chip U2
The polar capacitor C8 that is connected of SW pin, one end is connected with the colelctor electrode of audion VT3, the other end
The adjustable resistance R17 being connected with the OUT pin of conversion chip U2, and P pole after resistance R15 with
The COMP pin of conversion chip U2 is connected, N pole negative pole with amplifier P after resistance R16 is connected
The diode D7 composition connect；The positive pole of described amplifier P is connected with the colelctor electrode of audion VT3, its
The outfan of amplifier P is as the outfan adjusting circuit.
Described integrated drive electronics includes the current constant circuit that input is connected, and input with single-chip microcomputer
The driving current output circuit being connected with the outfan of current constant circuit；Described driving current output circuit
Outfan be connected with ventilation fan.
Described current constant circuit by driving chip U1, P pole after resistance R2 with the LN of driving chip U1
The diode that pin is connected, N pole is connected with the CS pin of driving chip U1 after polar capacitor C3
D1, one end is connected with the GND pin of driving chip U1, the resistance R3 of other end ground connection, one end with
The N pole of diode D1 is connected, the SW pin of the other end and driving chip U1 and DA pin and
DR pin is collectively forming the VC of the resistance R4 of the outfan of current constant circuit, positive pole and driving chip U1
The polar capacitor C2 that pin is connected, negative pole is connected with the P pole of diode D1, and negative pole is through resistance
After R1, the SOU pin with driving chip U1 is connected, positive pole is collectively forming electricity with the N pole of diode D1
The polar capacitor C1 composition of the input of stream constant circuit.
Described driving current output circuit is by audion VT1, field effect transistor MOS, audion VT2, P
Pole is connected with the emitter stage of audion VT2, N pole after resistance R7 with the DR pin of driving chip U1
The diode D2 being connected, one end is connected with the base stage of audion VT2, the other end and driving chip U1
The resistance R8 that is connected of DR pin, one end is connected with the DR pin of driving chip U1, the other end with
Resistance R5, the P pole that the DA pin of driving chip U1 is connected is connected with the base stage of audion VT2,
The diode D3 that N pole is connected with the drain electrode of field effect transistor MOS, negative pole is imitated with field after adjustable resistance R6
Should the polar capacitor C4 that grid is connected, positive pole is connected with the SW pin of driving chip U1 of pipe MOS,
And negative pole is connected with the source electrode of field effect transistor MOS, positive pole is connected with the emitter stage of audion VT1
Polar capacitor C5, and one end is connected with the source electrode of field effect transistor MOS, the other end and audion VT2
Emitter stage be collectively forming the resistance R9 of outfan driving current output circuit；The collection of described audion VT2
Electrode ground connection；The base stage of described audion VT1 is connected with the DR pin of driving chip U1.
For guaranteeing practical effect of the present utility model, described gas sensor is QM-N5 gas sensing
Device；Described infrared ray sensor is TR350 infrared ray sensor；Described driving chip U1 is SPA375 collection
Become chip；Described conversion chip U2 is the integrated chip of MAX291.
This utility model compared with prior art, has the following advantages and beneficial effect:
(1) ventilation fan range can be monitored by infrared ray sensor of the present utility model, and single-chip microcomputer can
Control ventilation fan according to the information analysis result that infrared ray sensor is monitored to automatically turn on and close；
Meanwhile, the result of the air monitering of ventilation fan range also can be controlled by single-chip microcomputer according to gas sensor
Ventilation fan automatically turns on and cuts out.
(2) nothing in the signal of telecommunication that gas sensor can be transmitted by signal analog to digital conversion circuit of the present utility model
Eliminate with signal, and the signal of telecommunication eliminating garbage signal can be converted to data signal, meanwhile, this letter
Data signal after conversion can also be adjusted by number analog to digital conversion circuit, makes the frequency of this data signal strengthen,
Ensure that the accuracy of the data signal that single-chip microcomputer receives, thus the control that improve this intelligence control system is accurate
Really property.
(3) electric current that single-chip microcomputer exports can be adjusted by integrated drive electronics of the present utility model, and can be by
Electric current after regulation carries out constant output, it is ensured that provides stable driving electric current for ventilation fan, ensures that
The stability of ventilation fan work.
(4) gas sensor of the present utility model is QM-N5 gas sensor, this biography catalytic combustion type air-sensitive
The stable performance of sensor, the accuracy of monitoring is high, ensures that the accuracy that this control system controls.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the electrical block diagram of integrated drive electronics of the present utility model.
Fig. 3 is the electrical block diagram of signal analog to digital conversion circuit of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, this utility model is described in further detail, but this practicality is new
The embodiment of type is not limited to this.
As it is shown in figure 1, this utility model includes single-chip microcomputer, the data storage that is all connected with single-chip microcomputer,
Infrared ray sensor, power supply, signal analog to digital conversion circuit and integrated drive electronics, with signal mode number conversion electricity
The gas sensor that road is connected, and the ventilation fan being connected with integrated drive electronics.Wherein, described collection
Become drive circuit as in figure 2 it is shown, it includes current constant circuit and drives current output circuit.
For guaranteeing reliability service of the present utility model, described single-chip microcomputer preferentially have employed AT89C51 single-chip microcomputer.
The RXD pin of this AT89C51 single-chip microcomputer is connected with infrared ray sensor, TO pin and data storage
Being connected, VCC pin is connected with power supply.Described power supply is 12V DC voltage, this 12V unidirectional current
Pressure is powered for single-chip microcomputer.
When this utility model runs, described infrared ray sensor the most preferentially uses stable performance, monitoring range
Wide TR350 infrared ray sensor realizes.This infrared ray sensor is for the prison to ventilation fan range
Survey, i.e. have nobody to be monitored ventilation fan range, and the information that will detect is converted to biography after the signal of telecommunication
Being defeated by single-chip microcomputer, single-chip microcomputer is then carried out according to the output control ventilation fan of the signal of telecommunication analysis to reception automatically
Open and close.Infrared ray sensor monitor ventilation fan range have people time, single-chip microcomputer receives this
After information, then output controls electric current to integrated drive electronics, the electric current that single-chip microcomputer is exported by this integrated drive electronics
Be adjusted, and the electric current after regulation is carried out constant after provide stable driving electric current for ventilation fan, now,
Ventilation fan is started working, and the air of ventilation fan working range forms convection current with outdoor air, effectively eliminates
The injury to people of the CO (carbon monoxide converter) gas in ventilation fan range.When infrared ray Sensor monitoring to people from
When opening, single-chip microcomputer receive after this information then can time-delay closing ventilation fan, to prevent people from repeatedly entering in the short time
Fashionable, cause ventilation fan ceaselessly to open and damage ventilation fan.Data storage of the present utility model is the most preferential
Have employed the VNXe3200 data storage of stable performance, the internal memory of this data storage contains air containing one
The normal value of carbonoxide, this air normal value containing carbon monoxide is that people's eupnea does not constitute the one of injury
Oxidation carbon value.
Meanwhile, when ventilation fan is unlocked, the air of ventilation fan range is then carried out by gas sensor in real time
Monitoring, and the information of monitoring is converted to the signal of telecommunication through signal analog to digital conversion circuit export, this signal modulus turns
Change circuit can be eliminated by the garbage signal in the signal of telecommunication of gas sensor transmission, and can be useless by eliminating
The signal of telecommunication of signal is converted to data signal, and meanwhile, this signal analog to digital conversion circuit can also be by the number after conversion
The number of it is believed that is adjusted, and makes the frequency of this data signal strengthen.After this signal analog to digital conversion circuit general strengthen
Data signal transmission is to single-chip microcomputer, and single-chip microcomputer obtains the oxidation in air after then being analyzed and processed by this signal of telecommunication
Carbon value, this carbon monoxide value is carried out containing carbon monoxide value by this single-chip microcomputer with the air of storage in data storage
Comparison, and control ventilation fan by the result of comparison and automatically turn on, make the air in ventilation fan range
Value keeps consistent with the carbon monoxide value that the air of storage in data storage contains.In ventilation fan range
The carbon monoxide value that contains of air keep consistent with the carbon monoxide value that the air of storage in data storage contains
After, single-chip microcomputer then stops then being closed to ventilation fan output electric current, i.e. ventilation fan.
Single-chip microcomputer of the present utility model uses by infrared ray sensor and gas sensor monitor ventilation fan
The information of scope, it is achieved that control ventilation fan and automatically turn on and close, effectively saved electric power simultaneously
Resource.
As in figure 2 it is shown, described integrated drive electronics includes current constant circuit and drives current output circuit；
Described current constant circuit is by driving chip U1, resistance R1, resistance R2, resistance R3, resistance R4, pole
Property electric capacity C1, polar capacitor C2, polar capacitor C3, and diode D1 composition.
During connection, the P pole of diode D1 LN pin with driving chip U1 after resistance R2 is connected,
N pole CS pin with driving chip U1 after polar capacitor C3 is connected.One end of resistance R3 and driving
The GND pin of chip U1 is connected, other end ground connection.One end of resistance R4 and the N of diode D1
Pole is connected, the SW pin of the other end and driving chip U1 and DA pin and DR pin are collectively forming
The outfan of current constant circuit is also connected with current driving circuit.
Wherein, the positive pole of polar capacitor C2 be connected with the VC pin of driving chip U1, negative pole and two poles
The P pole of pipe D1 is connected.The negative pole of polar capacitor C1 after resistance R1 with the SOU of driving chip U1
Pin is connected, positive pole is connected with AT89C51 single-chip microcomputer TXD1 pin；The N of described diode D1
Pole is connected with AT89C51 single-chip microcomputer TXD2 pin.
Further, described driving current output circuit is by audion VT1, field effect transistor MOS, three poles
Pipe VT2, resistance R5, adjustable resistance R6, resistance R7, resistance R8, resistance R9, polar capacitor C4,
Polar capacitor C5, diode D2, and diode D3 form.
During connection, the P pole of diode D2 is connected with the emitter stage of audion VT2, N pole is through resistance
After R7, the DR pin with driving chip U1 is connected.One end of resistance R8 and the base stage of audion VT2
Be connected, the other end is connected with the DR pin of driving chip U1.One end of resistance R5 and driving chip
The DR pin of U1 is connected, the other end is connected with the DA pin of driving chip U1.Diode D3's
P pole is connected with the base stage of audion VT2, N pole is connected with the drain electrode of field effect transistor MOS.
Meanwhile, the negative pole of polar capacitor C4 grid with field effect transistor MOS after adjustable resistance R6 is connected
Connect, positive pole is connected with the SW pin of driving chip U1.The negative pole of polar capacitor C5 and field effect transistor
The source electrode of MOS is connected, positive pole is connected with the emitter stage of audion VT1.One end of resistance R9 and field
The source electrode of effect pipe MOS is connected, the other end is collectively forming driving electric current with the emitter stage of audion VT2
The outfan of output circuit is also connected with ventilation fan.The grounded collector of described audion VT2；Described three
The base stage of pole pipe VT1 is connected with the DR pin of driving chip U1.
During operation, the electric current that single-chip microcomputer transmits is filtered by polar capacitor C1, eliminates pulse electricity in electric current
Stream, the electric current after this Filtering Processing exports after driving chip U1 carries out constant flow regulation, and this is at constant flow regulation
The electric current of reason carries out electric current through the driver that adjustable resistance R6 and audion VT1 and diode D2 is formed and delays
Punching processes output, now, the derailing switch that field effect transistor MOS and audion VT2 are formed obtain electric after turn on also
Export stable driving electric current to ventilation fan, ensure that the stability that ventilation fan works.For the most real
Executing this utility model, described driving chip U1 the most preferentially uses the integrated chip of SPA375 of stable performance
Realize.
As it is shown on figure 3, described signal analog to digital conversion circuit includes signaling conversion circuit and adjusts circuit；Described
Signaling conversion circuit is by conversion chip U2, resistance R10, resistance R11, resistance R12, resistance R14, pole
Property electric capacity C6, polar capacitor C7, diode D4, and diode D5 composition.
During connection, the negative pole of polar capacitor C6 as signaling conversion circuit input and and gas sensor
Be connected, positive pole IN pin with conversion chip U2 after resistance R12 is connected.The P of diode D5
Pole is connected with the CLK pin of conversion chip U2, N pole is connected with the positive pole of polar capacitor C6.Two poles
The N pole of pipe D4 CLK pin with conversion chip U2 after resistance R11 is connected, P pole is through resistance R10
It is connected with the N pole of diode D5 afterwards.
Wherein, the positive pole of polar capacitor C7 is connected with the N pole of diode D4, negative pole is through resistance R14
It is connected with the OPIN pin of conversion chip U2 afterwards.The GND pin ground connection of described conversion chip U2,
Its AL pin and SW pin and OUT pin and COMP pin are collectively forming the output of signal conversion electricity
End is also connected with adjusting circuit.
Further, described adjustment electricity routing amplifier P, audion VT3, resistance R13, resistance R15,
Resistance R16, adjustable resistance R17, resistance R18, resistance R19, polar capacitor C8, polar capacitor C9,
Diode D6, and diode D7 composition.
During connection, the P pole of diode D6 emitter stage with audion VT3 after resistance R18 is connected,
N pole AL pin with conversion chip U2 after resistance R13 is connected.The positive pole of polar capacitor C9 is through electricity
Be connected with the P pole of diode D6 after resistance R19, negative pole is connected with the outfan of amplifier P.Polarity
The negative pole of electric capacity C8 is connected with the base stage of audion VT3, the SW pin phase of positive pole and conversion chip U2
Connect.
Meanwhile, one end of adjustable resistance R17 be connected with the colelctor electrode of audion VT3, the other end with turn
The OUT pin changing chip U2 is connected.The P pole of diode D7 after resistance R15 with conversion chip U2
COMP pin be connected, N pole negative pole with amplifier P after resistance R16 is connected.Described amplification
The positive pole of device P is connected with the colelctor electrode of audion VT3, and the outfan of its amplifier P is as adjusting circuit
Outfan and be connected with the WR pin of AT89C51 single-chip microcomputer.
During operation, the signal of telecommunication filtered polar capacitor C6 and diode D5 of gas sensor output and pole
Property electric capacity C7 formed filter processor be filtered after, the garbage signal in this signal of telecommunication is eliminated, through filter
The signal of telecommunication after ripple processor processes is transferred to conversion chip U2, and this conversion chip U2 is then by chip
Additional electrical components convert electrical signals to data signal.Data signal after its conversion then passes through diode
The adjustor that D6 and adjustable resistance R17 and polar capacitor C8 and diode D7 is formed is by data signal
Low frequency signal strengthen, meanwhile, by amplifier P will process after the signal of telecommunication be amplified after be transferred to list
Sheet machine, thus effectively ensure that the accuracy of the data signal that single-chip microcomputer receives.In order to preferably implement this
Utility model, described conversion chip U2 the most preferentially have employed the integrated chip of MAX291 of stable performance to be come
Realize.
According to above-described embodiment, can well realize this utility model.
Claims (9)
1. a ventilation fan intelligence control system based on signal analog to digital conversion circuit, it is characterised in that bag
Include single-chip microcomputer, the data storage that is all connected, infrared ray sensor, power supply, signal modulus with single-chip microcomputer
Change-over circuit and integrated drive electronics, the gas sensor being connected with signal analog to digital conversion circuit, Yi Jiyu
The ventilation fan that integrated drive electronics is connected；Described signal analog to digital conversion circuit includes input and gas sensing
The signaling conversion circuit that device is connected, the adjustment being connected with the outfan of signaling conversion circuit with input electricity
Road；The outfan of described adjustment circuit is connected with single-chip microcomputer.
A kind of ventilation fan Based Intelligent Control based on signal analog to digital conversion circuit the most according to claim 1
System, it is characterised in that described signaling conversion circuit is by conversion chip U2, and negative pole is as signaling conversion circuit
Input, the polar capacitor C6 that is connected with the IN pin of conversion chip U2 after resistance R12 of positive pole,
P pole is connected with the CLK pin of conversion chip U2, N pole is connected with the positive pole of polar capacitor C6 two
Pole pipe D5, N pole CLK pin with conversion chip U2 after resistance R11 is connected, P pole is through resistance
The diode D4 being connected with the N pole of diode D5 after R10, and the N pole of positive pole and diode D4
Be connected, polar capacitor C7 that negative pole is connected with the OPIN pin of conversion chip U2 after resistance R14
Composition；The GND pin ground connection of described conversion chip U2, its AL pin and SW pin and OUT pipe
Foot and COMP pin are collectively forming the outfan of signal conversion electricity.
A kind of ventilation fan Based Intelligent Control based on signal analog to digital conversion circuit the most according to claim 2
System, it is characterised in that described adjustment electricity routing amplifier P, audion VT3, P pole is through resistance R18
Emitter stage with audion VT3 is connected afterwards, N pole is managed with the AL of conversion chip U2 after resistance R13
The diode D6 that foot is connected, positive pole P pole with diode D6 after resistance R19 is connected, negative pole with
The polar capacitor C9 that the outfan of amplifier P is connected, negative pole is connected with the base stage of audion VT3, just
The current collection of the polar capacitor C8 that pole is connected with the SW pin of conversion chip U2, one end and audion VT3
The adjustable resistance R17 that pole is connected, the other end is connected with the OUT pin of conversion chip U2, and P
Pole COMP pin with conversion chip U2 after resistance R15 is connected, N pole after resistance R16 with put
The diode D7 composition that the negative pole of big device P is connected；The positive pole of described amplifier P is with audion VT3's
Colelctor electrode is connected, and the outfan of its amplifier P is as the outfan adjusting circuit.
A kind of ventilation fan Based Intelligent Control based on signal analog to digital conversion circuit the most according to claim 3
System, it is characterised in that described integrated drive electronics includes the current constant that input is connected with single-chip microcomputer
Circuit, the driving current output circuit being connected with the outfan of input with current constant circuit；Described drive
The outfan of streaming current output circuit is connected with ventilation fan.
A kind of ventilation fan Based Intelligent Control based on signal analog to digital conversion circuit the most according to claim 4
System, it is characterised in that described current constant circuit by driving chip U1, P pole after resistance R2 with drive
The LN pin of dynamic chip U1 is connected, N pole after polar capacitor C3 with the CS pin of driving chip U1
The diode D1 being connected, one end is connected with the GND pin of driving chip U1, the electricity of other end ground connection
Resistance R3, one end is connected with the N pole of diode D1, the SW pin of the other end and driving chip U1 and
DA pin and DR pin are collectively forming the resistance R4 of the outfan of current constant circuit, positive pole and driving
The polar capacitor C2 that the VC pin of chip U1 is connected, negative pole is connected with the P pole of diode D1, with
And negative pole SOU pin with driving chip U1 after resistance R1 is connected, the N of positive pole and diode D1
Pole is collectively forming the polar capacitor C1 composition of the input of current constant circuit.
A kind of ventilation fan Based Intelligent Control based on signal analog to digital conversion circuit the most according to claim 5
System, it is characterised in that described driving current output circuit by audion VT1, field effect transistor MOS, three
Pole pipe VT2, P pole is connected with the emitter stage of audion VT2, N pole after resistance R7 with driving chip
The diode D2 that the DR pin of U1 is connected, one end is connected with the base stage of audion VT2, the other end
The resistance R8 being connected with the DR pin of driving chip U1, the DR pin phase of one end and driving chip U1
Resistance R5, the P pole that connection, the other end are connected with the DA pin of driving chip U1 and audion VT2
The diode D3 that base stage is connected, N pole is connected with the drain electrode of field effect transistor MOS, negative pole is through adjustable
After resistance R6 the grid with field effect transistor MOS be connected, the SW pin phase of positive pole and driving chip U1
The polar capacitor C4 connected, and negative pole is connected with the source electrode of field effect transistor MOS, positive pole and audion
The polar capacitor C5 that the emitter stage of VT1 is connected, and one end is connected with the source electrode of field effect transistor MOS,
The emitter stage of the other end and audion VT2 is collectively forming the resistance R9 of the outfan driving current output circuit；
The grounded collector of described audion VT2；The base stage of described audion VT1 and the DR of driving chip U1
Pin is connected.
A kind of ventilation fan Based Intelligent Control based on signal analog to digital conversion circuit the most according to claim 6
System, it is characterised in that described gas sensor is QM-N5 gas sensor.
A kind of ventilation fan of based on signal analog to digital conversion circuit the most according to claim 7 Based Intelligent Control system
System, it is characterised in that described infrared ray sensor is TR350 infrared ray sensor.
A kind of ventilation fan of based on signal analog to digital conversion circuit the most according to claim 8 Based Intelligent Control system
System, it is characterised in that described driving chip U1 is the integrated chip of SPA375；Described conversion chip U2 is
The integrated chip of MAX291.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620254285.6U CN205644136U (en) | 2016-03-29 | 2016-03-29 | Scavenger fan intelligence control system based on signal analog to digital conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620254285.6U CN205644136U (en) | 2016-03-29 | 2016-03-29 | Scavenger fan intelligence control system based on signal analog to digital conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205644136U true CN205644136U (en) | 2016-10-12 |
Family
ID=57074381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620254285.6U Expired - Fee Related CN205644136U (en) | 2016-03-29 | 2016-03-29 | Scavenger fan intelligence control system based on signal analog to digital conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205644136U (en) |
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2016
- 2016-03-29 CN CN201620254285.6U patent/CN205644136U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20180329 |