CN205638992U - Scavenger fan intelligence control system based on signal filtering and amplification circuit - Google Patents
Scavenger fan intelligence control system based on signal filtering and amplification circuit Download PDFInfo
- Publication number
- CN205638992U CN205638992U CN201620252619.6U CN201620252619U CN205638992U CN 205638992 U CN205638992 U CN 205638992U CN 201620252619 U CN201620252619 U CN 201620252619U CN 205638992 U CN205638992 U CN 205638992U
- Authority
- CN
- China
- Prior art keywords
- pole
- resistance
- circuit
- signal
- amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a scavenger fan intelligence control system based on signal filtering and amplification circuit, including the singlechip, the scavenger fan that all is connected with the singlechip, data memory, power, signal analog to digital conversion circuit and signal filtering and amplification circuit, the gas sensor who is connected with signal analog to digital conversion circuit to and the infrared ray sensor who is connected with signal filtering and amplification circuit, 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 filtering amplifying 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 filtering amplifying circuit ventilation fan intelligence control system.
This utility model is achieved through the following technical solutions: a kind of ventilation based on signal filtering amplifying circuit
Fan intelligence control system, including single-chip microcomputer, the ventilation fan being all connected with single-chip microcomputer, data storage, electricity
Source, signal analog to digital conversion circuit and signal filtering amplifying circuit, the gas being connected with signal analog to digital conversion circuit
Dependent sensor, and the infrared ray sensor being connected with signal filtering amplifying circuit；Described signal modulus turns
Change the signaling conversion circuit that circuit includes that input is connected with gas sensor, and input is changed with signal
The adjustment circuit that the outfan of circuit is connected；The outfan of described adjustment circuit is connected with single-chip microcomputer.
Described signaling conversion circuit is by conversion chip U, and negative pole is as the input of signaling conversion circuit, positive pole
Polar capacitor C6, the P pole being connected with the IN pin of conversion chip U after resistance R14 and conversion chip
Diode D6, the N pole warp that the CLK pin of U is connected, N pole is connected with the positive pole of polar capacitor C6
After resistance R13 the CLK pin with conversion chip U be connected, P pole after resistance R12 with diode D6
The diode D5 that is connected of N pole, and positive pole is connected with the N pole of diode D5, negative pole is through resistance
The polar capacitor C7 composition being connected with the OPIN pin of conversion chip U after R16；Described conversion chip U
GND pin ground connection, its AL pin and SW pin and OUT pin and the common shape of COMP pin
Become the outfan of signal conversion electricity.
Described adjust electricity routing amplifier P3, audion VT2, P pole after resistance R20 with audion VT2
The diode that emitter stage is connected, N pole is connected with the AL pin of conversion chip U after resistance R15
D7, positive pole P pole with diode D7 after resistance R21 is connected, the outfan of negative pole and amplifier P3
The polar capacitor C9 being connected, negative pole is connected with the base stage of audion VT2, positive pole and conversion chip U
The polar capacitor C8 that is connected of SW pin, one end is connected with the colelctor electrode of audion VT2, the other end
The adjustable resistance R19 being connected with the OUT pin of conversion chip U, and P pole after resistance R17 with turn
The COMP pin changing chip U is connected, N pole negative pole with amplifier P3 after resistance R18 is connected
Diode D8 composition；The positive pole of described amplifier P3 is connected with the colelctor electrode of audion VT2, and it is put
The outfan of big device P3 is as the outfan adjusting circuit.
Described signal filtering amplifying circuit includes at the signal filtering that input is connected with infrared ray sensor
Reason circuit, processes, with signal filtering, the signal amplification output circuit that the outfan of circuit is connected with input；
The outfan of described signal amplification output circuit is connected with single-chip microcomputer.
Described signal filtering processes electricity routing amplifier P1, audion VT1, and negative pole processes as signal filtering
Polar capacitor C1, P pole that the input of circuit, positive pole are connected with the positive pole of amplifier P1 and amplifier
Two poles that the outfan of P1 is connected, N pole base stage with audion VT1 after adjustable resistance R5 is connected
Pipe D2, negative pole base stage with audion VT1 after resistance R4 is connected, positive pole after resistance R3 with two
Polar capacitor C2, the P pole that the N pole of pole pipe D2 is connected after resistance R1 with the positive pole phase of amplifier P1
Connect, diode D1 that N pole positive pole with polar capacitor C2 after resistance R2 is connected, and negative pole is suitable
Secondary be connected through diode D3 colelctor electrode with audion VT1 after resistance R10, positive pole is sequentially through resistance
The polar capacitor C3 composition being connected with the positive pole of amplifier P1 after R7 and resistance R6；Described amplifier P1
Minus earth；The emitter stage of described audion VT1 processes the outfan of circuit as signal filtering.
Described signal amplification output circuit by amplifier P2, negative pole after resistance R8 with audion VT1 send out
The polar capacitor C4 that emitter-base bandgap grading is connected, positive pole is connected with the positive pole of amplifier P2, negative pole is through resistance R11
Outfan with amplifier P2 is connected afterwards, positive pole negative pole with polar capacitor C4 after resistance R9 is connected
Polar capacitor C5, and P pole is connected with the positive pole of polar capacitor C5, N pole and amplifier P2 just
The diode D4 composition that pole is connected；The minus earth of described amplifier P2, its outfan is put as signal
The outfan of big output circuit.
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 conversion chip U is MAX291
Integrated chip.
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) signal of telecommunication of infrared ray sensor output can be carried out by signal filtering amplifying circuit of the present utility model
Filtering, effectively eliminates the interference signal in the signal of telecommunication, is put by the signal of telecommunication after this anti-interference process meanwhile
It is transferred to single-chip microcomputer after great, ensures that the accuracy that this intelligence control system controls.
(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 signal filtering amplifying circuit 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 ventilation fan that is all connected with single-chip microcomputer, data
Memorizer, power supply, signal analog to digital conversion circuit and signal filtering amplifying circuit, with signal analog to digital conversion circuit
The gas sensor being connected, and the infrared ray sensor being connected with signal filtering amplifying circuit.Wherein,
Described signal filtering amplifying circuit is as in figure 2 it is shown, it includes that signal filtering processes circuit and signal amplifies output
Circuit.
For guaranteeing reliability service of the present utility model, described single-chip microcomputer preferentially have employed AT89C51 single-chip microcomputer.
This AT89C51 single-chip microcomputer TXD pin is connected with ventilation fan, and TO pin is connected with data storage,
VCC pin is connected with power supply.Described power supply is 12V DC voltage, and this 12V DC voltage is monolithic
Machine is powered.
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 warp after the signal of telecommunication
Signal filtering amplifying circuit transmits, the signal of telecommunication that infrared ray sensor is exported by this signal filtering amplifying circuit
Being filtered, to eliminate the interference signal in this signal of telecommunication, the signal of telecommunication after simultaneously processing transmits after amplifying
To single-chip microcomputer, single-chip microcomputer then leaves automatically according to the output control ventilation fan of the signal of telecommunication analysis to reception
Open and close.Infrared ray sensor monitor ventilation fan range have people time, single-chip microcomputer receives this letter
After breath, then output control electric current is to ventilation fan, and now, ventilation fan is started working, the sky of ventilation fan working range
Gas forms convection current with outdoor air, has effectively eliminated the CO (carbon monoxide converter) gas pair in ventilation fan range
The injury of people.When infrared ray Sensor monitoring to people leaves, single-chip microcomputer then can time delay after receiving this information
Close ventilation fan, to prevent people when the short time enters repeatedly, cause ventilation fan ceaselessly to open and damage and change
Gas is fanned.Data storage of the present utility model the most preferentially have employed the VNXe3200 data storage of stable performance
Device, the internal memory of this data storage contains the air normal value containing carbon monoxide, and this air is containing carbon monoxide
Normal value is the carbon monoxide value that people's eupnea does not constitute injury.
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 signal filtering amplifying circuit includes that signal filtering processes circuit and signal amplifies defeated
Go out circuit；Described signal filtering processes electricity routing amplifier P1, audion VT1, resistance R1, resistance R2,
Resistance R3, resistance R4, adjustable resistance R5, resistance R6, resistance R7, resistance R10, polar capacitor C1,
Polar capacitor C2, polar capacitor C3, diode D1, diode D2, and diode D3 form.
During connection, the negative pole of polar capacitor C1 processes the input of circuit, positive pole as signal filtering and puts
The positive pole of big device P1 is connected.The P pole of diode D2 is connected with the outfan of amplifier P1, N pole warp
After adjustable resistance R5, the base stage with audion VT1 is connected.The negative pole of polar capacitor C2 is after resistance R4
Be connected with the base stage of audion VT1, positive pole N pole with diode D2 after resistance R3 is connected.
Wherein, the P pole of diode D1 positive pole with amplifier P1 after resistance R1 be connected, N pole warp
After resistance R2, the positive pole with polar capacitor C2 is connected.The negative pole of polar capacitor C3 is sequentially through diode D3
Be connected with colelctor electrode with audion VT1 after resistance R10, positive pole is sequentially through resistance R7 and resistance R6
Positive pole with amplifier P1 is connected afterwards.The minus earth of described amplifier P1；Described audion VT1's
Emitter stage processes the outfan of circuit as signal filtering and is connected with signal amplification circuit.
Further, described signal amplification output circuit is by amplifier P2, resistance R8, resistance R9, resistance
R11, polar capacitor C4, polar capacitor C5, and diode D4 form.
During connection, the negative pole of polar capacitor C4 emitter stage with audion VT1 after resistance R8 is connected,
Positive pole is connected with the positive pole of amplifier P2.The negative pole of polar capacitor C5 after resistance R11 with amplifier P2
Outfan be connected, positive pole negative pole with polar capacitor C4 after resistance R9 is connected.Diode D4
P pole be connected with the positive pole of polar capacitor C5, N pole is connected with the positive pole of amplifier P2.Described put
The minus earth of big device P2, its outfan is as the outfan of signal amplification output circuit and AT89C51
The RXD pin of single-chip microcomputer is connected.
During operation, the signal of telecommunication of infrared ray sensor output is through polar capacitor C1 and amplifier P1 and three poles
The signal filtering that pipe VT1 and adjustable resistance R5 is formed processes circuit and is filtered, by the interference in the signal of telecommunication
Signal eliminates, and is adjusted by the adjustable resistance R5 in signal filter circuit and audion VT1,
The signal of telecommunication amplified device P2 and the signal of polar capacitor C4 and polar capacitor C5 formation after this process are put
Big output circuit is transferred to single-chip microcomputer after being amplified, thus effectively ensure that the signal that single-chip microcomputer receives
Accuracy.
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 U, resistance R12, resistance R13, resistance R14, resistance R16, polarity
Electric capacity C6, polar capacitor C7, diode D5, and diode D6 form.
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 U after resistance R14 is connected.The P pole of diode D6
Be connected with the CLK pin of conversion chip U, N pole is connected with the positive pole of polar capacitor C6.Diode
The N pole of D5 CLK pin with conversion chip U after resistance R13 is connected, P pole is after resistance R12
It is connected with the N pole of diode D6.
Wherein, the positive pole of polar capacitor C7 is connected with the N pole of diode D5, negative pole is through resistance R16
It is connected with the OPIN pin of conversion chip U afterwards.The GND pin ground connection of described conversion chip U, its
AL pin and SW pin and OUT pin and COMP pin are collectively forming the outfan of signal conversion electricity
And be connected with adjusting circuit.
Further, described adjustment electricity routing amplifier P3, audion VT2, resistance R15, resistance R17,
Resistance R18, adjustable resistance R19, resistance R20, resistance R21, polar capacitor C8, polar capacitor C9,
Diode D7, and diode D8 composition.
During connection, the P pole of diode D7 emitter stage with audion VT2 after resistance R20 is connected,
N pole AL pin with conversion chip U after resistance R15 is connected.The positive pole of polar capacitor C9 is through resistance
After R21, the P pole with diode D7 is connected, negative pole is connected with the outfan of amplifier P3.Polarity electricity
The negative pole of appearance C8 is connected with the base stage of audion VT2, positive pole is connected with the SW pin of conversion chip U
Connect.
Meanwhile, one end of adjustable resistance R19 be connected with the colelctor electrode of audion VT2, the other end with turn
The OUT pin changing chip U is connected.The P pole of diode D8 after resistance R17 with conversion chip U
COMP pin be connected, N pole negative pole with amplifier P3 after resistance R18 is connected.Described put
The big positive pole of device P3 is connected with the colelctor electrode of audion VT2, and the outfan of its amplifier P3 is as adjustment
The outfan of circuit is also connected with the WR pin of AT89C51 single-chip microcomputer.
During operation, the signal of telecommunication filtered polar capacitor C6 and diode D6 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 U, and this conversion chip U is then by chip
Additional electrical components converts electrical signals to data signal.Data signal after its conversion is then by diode D7
Low by data signal of the adjustor formed with adjustable resistance R19 and polar capacitor C8 and diode D8
Frequently signal strengthens, and meanwhile, the signal of telecommunication after being processed by amplifier P3 is transferred to single-chip microcomputer after being amplified,
Thus effectively ensure that the accuracy of the data signal that single-chip microcomputer receives.New in order to preferably implement this practicality
Type, described conversion chip U the most preferentially have employed the integrated chip of MAX291 of stable performance and realizes.
According to above-described embodiment, can well realize this utility model.
Claims (9)
1. a ventilation fan intelligence control system based on signal filtering amplifying circuit, it is characterised in that bag
Include single-chip microcomputer, the ventilation fan that is all connected, data storage, power supply, signal mode number conversion electricity with single-chip microcomputer
Road and signal filtering amplifying circuit, the gas sensor being connected with signal analog to digital conversion circuit, and with letter
Number infrared ray sensor that filter amplification circuit is connected；Described signal analog to digital conversion circuit include input with
The signaling conversion circuit that gas sensor is connected, is connected with the outfan of signaling conversion circuit with input
Adjustment circuit；The outfan of described adjustment circuit is connected with single-chip microcomputer.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 1
System, it is characterised in that described signaling conversion circuit is by conversion chip U, and negative pole is as signaling conversion circuit
Input, positive pole the polar capacitor C6, P that are connected with the IN pin of conversion chip U after resistance R14
Two poles that pole is connected with the CLK pin of conversion chip U, N pole is connected with the positive pole of polar capacitor C6
Pipe D6, N pole CLK pin with conversion chip U after resistance R13 is connected, P pole is through resistance R12
The diode D5 being connected with the N pole of diode D6 afterwards, and positive pole is extremely connected with the N of diode D5
Connect, polar capacitor C7 that negative pole is connected with the OPIN pin of conversion chip U after resistance R16 composition；
The GND pin ground connection of described conversion chip U, its AL pin and SW pin and OUT pin and
COMP pin is collectively forming the outfan of signal conversion electricity.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 2
System, it is characterised in that described adjustment electricity routing amplifier P3, audion VT2, P pole is through resistance R20
Afterwards the emitter stage with audion VT2 be connected, N pole after resistance R15 with the AL pin of conversion chip U
The diode D7 being connected, positive pole P pole with diode D7 after resistance R21 is connected, negative pole with put
The polar capacitor C9 that the outfan of big device P3 is connected, negative pole is connected with the base stage of audion VT2, just
The current collection of the polar capacitor C8 that pole is connected with the SW pin of conversion chip U, one end and audion VT2
The adjustable resistance R19 that pole is connected, the other end is connected with the OUT pin of conversion chip U, and P pole
After resistance R17 the COMP pin with conversion chip U be connected, N pole after resistance R18 with amplifier
The diode D8 composition that the negative pole of P3 is connected；The positive pole of described amplifier P3 and the current collection of audion VT2
Pole is connected, and the outfan of its amplifier P3 is as the outfan adjusting circuit.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 3
System, it is characterised in that described signal filtering amplifying circuit includes that input is connected with infrared ray sensor
Signal filtering process circuit, the signal being connected with the outfan of input and signal filtering process circuit is put
Big output circuit；The outfan of described signal amplification output circuit is connected with single-chip microcomputer.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 4
System, it is characterised in that described signal filtering processes electricity routing amplifier P1, audion VT1, and negative pole is made
The polar capacitor C1 being connected with the positive pole of amplifier P1 for the signal filtering process input of circuit, positive pole,
P pole is connected with the outfan of amplifier P1, N pole after adjustable resistance R5 with the base stage of audion VT1
The diode D2 being connected, negative pole base stage with audion VT1 after resistance R4 is connected, positive pole is through electricity
After resistance R3 polar capacitor C2, the P pole that is connected with the N pole of diode D2 after resistance R1 with amplifier
The diode D1 that the positive pole of P1 is connected, N pole positive pole with polar capacitor C2 after resistance R2 is connected,
And negative pole is sequentially connected through diode D3 colelctor electrode with audion VT1 after resistance R10, positive pole
The polar capacitor C3 composition being sequentially connected through resistance R7 positive pole with amplifier P1 after resistance R6；Institute
State the minus earth of amplifier P1；The emitter stage of described audion VT1 processes the defeated of circuit as signal filtering
Go out end.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 5
System, it is characterised in that described signal amplification output circuit by amplifier P2, negative pole after resistance R8 with
The polar capacitor C4 that the emitter stage of audion VT1 is connected, positive pole is connected with the positive pole of amplifier P2,
Negative pole outfan with amplifier P2 after resistance R11 is connected, positive pole after resistance R9 with polar capacitor
The polar capacitor C5 that the negative pole of C4 is connected, and P pole is connected with the positive pole of polar capacitor C5, N pole
The diode D4 composition being connected with the positive pole of amplifier P2；The minus earth of described amplifier P2, it is defeated
Go out the end outfan as signal amplification output circuit.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying 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 Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 7
System, it is characterised in that described infrared ray sensor is TR350 infrared ray sensor.
A kind of ventilation fan Based Intelligent Control based on signal filtering amplifying circuit the most according to claim 8
System, it is characterised in that described conversion chip U is the integrated chip of MAX291.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252619.6U CN205638992U (en) | 2016-03-29 | 2016-03-29 | Scavenger fan intelligence control system based on signal filtering and amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252619.6U CN205638992U (en) | 2016-03-29 | 2016-03-29 | Scavenger fan intelligence control system based on signal filtering and amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205638992U true CN205638992U (en) | 2016-10-12 |
Family
ID=57075468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620252619.6U Expired - Fee Related CN205638992U (en) | 2016-03-29 | 2016-03-29 | Scavenger fan intelligence control system based on signal filtering and amplification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205638992U (en) |
-
2016
- 2016-03-29 CN CN201620252619.6U patent/CN205638992U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205641387U (en) | Intelligent control system of ventilator | |
| CN105423390A (en) | Energy-saving range hood control system based on hybrid circuit processing | |
| CN205638992U (en) | Scavenger fan intelligence control system based on signal filtering and amplification circuit | |
| CN205611020U (en) | From sound and light control system of opening and close light | |
| CN205639024U (en) | From scavenger fan intelligence control system who opens and close | |
| CN205610973U (en) | LED lamp is with multi -functional energy -conserving light control system | |
| CN205644136U (en) | Scavenger fan intelligence control system based on signal analog to digital conversion circuit | |
| CN105472812A (en) | Hybrid multifunctional intelligent optical-control system for LED lamp | |
| CN205717742U (en) | Intelligence control system based on the air regenerating device of overload protection low-power consumption mu balanced circuit | |
| CN105916238A (en) | Transistor-voltage-stabilizing-filtering-circuit-based energy-saving control system for LED lamp band | |
| CN205691660U (en) | A kind of power input to a machine counting circuit | |
| CN205717769U (en) | A kind of intelligent monitor system of multi-functional air purifier | |
| CN105402794A (en) | Range hood energy-saving control system based on bandpass filtering amplifying circuit | |
| CN205655441U (en) | Air regenerating device intelligence control system of stable performance | |
| CN205620729U (en) | High sensitivity's air purifier's intelligent monitoring system | |
| CN205644206U (en) | Formula air purifier intelligent monitoring system is handled to multicircuit | |
| CN105423385A (en) | Energy-saving control system based on compound band-pass filtering and amplifying circuit and used for range hood | |
| CN205657896U (en) | Multicircuit processing formula high accuracy intelligence control system for light | |
| CN205610978U (en) | Sound and light control system of light based on linear drive circuit | |
| CN205644135U (en) | Scavenger fan intelligence control system of high accuracy | |
| CN205641357U (en) | Air purifier's intelligent monitoring system | |
| CN205717741U (en) | A kind of jamproof air regenerating device intelligence control system | |
| CN205648143U (en) | Sound and light control system of light based on bootstrapping amplifier circuit | |
| CN106132037A (en) | A kind of phase difference correction type energy-saving control system of LED double control-type level adjustment | |
| CN205641386U (en) | Air regenerating device's intelligence control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |