CN108223417A - Induction type lift car ventilation fan - Google Patents
Induction type lift car ventilation fan Download PDFInfo
- Publication number
- CN108223417A CN108223417A CN201810138629.0A CN201810138629A CN108223417A CN 108223417 A CN108223417 A CN 108223417A CN 201810138629 A CN201810138629 A CN 201810138629A CN 108223417 A CN108223417 A CN 108223417A
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- Prior art keywords
- circuit
- ventilation fan
- resistance
- anode
- capacitor
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
- B66B11/024—Ventilation systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Elevator Control (AREA)
Abstract
The present invention provides a kind of induction type lift car ventilation fan, feature includes 6V D.C. regulated power supplies, bikini oscillating circuit, rc-coupled amplification circuit, multiplication of voltage detection and filter circuit, ventilation fan driving circuit；The bikini oscillating circuit is made of inductive probe L, oscillating capacitance C1, oscillating capacitance C2, capacitance C3, N-channel field-effect tube BG1, biasing resistor R1, potentiometer RP and resistance R2.In actual operation, the ventilation fan in car is difficult normal work 2 years to elevator, after ventilation fan breaks down and reports for repairment, usually cannot get the on-call maintenance of property management company.To ensure that owner uses the comfort of elevator and the operational safety of elevator, the present invention using in the automatic detecting elevator car of human body sensing mode whether someone, boarding personnel once leave lift car, ventilation fan in lift car automatically powers off after maintaining power supply 15 seconds, realizes the purpose that ventilation fan in lift car detects human body and safety utilization of electric power and economize on electricity automatically.
Description
Technical field
The invention belongs to electronic auto-control technology fields, are about a kind of induction type lift car ventilation fan.
Background technology
The purpose of installation ventilation fan is to remove dirty and stale air in lift car in lift car.It is common
Ventilation fan majority in lift car is that long-term be powered continuously runs, and only a few ventilation fan switch can be controlled artificially.Ventilation fan is normal
Year continuously runs one and carrys out ventilation fan high failure rate；Two waste electric power；Three is fiery in the presence of motor initiation is burnt out to operate incessantly
The security risks such as calamity.In actual operation, the ventilation fan in car is difficult normally to continuously run 2 years to elevator, when ventilation fan occurs
Failure and after reporting for repairment, usually cannot get the on-call maintenance of property management company, makes cell owner and property management company or elevator maintenance company
Generate unnecessary contradiction.
Although elevator production can reach《Elevator manufactures and installation safety standard》GB7588-2003.But pass through tracking one
The ventilation fan that part lift car is damaged, wherein most ventilation fan is burned when running without interruption for a long time.To ensure
Owner utilizes human body using the comfort of elevator and the operational safety of elevator, induction type lift car ventilation fan of the present invention
In the automatic detecting elevator car of induction mode whether someone, boarding personnel once leave lift car, the ventilation in lift car
Fan automatically powers off after maintaining power supply 15 seconds, realizes ventilation fan in lift car and detects human body and safety utilization of electric power and section automatically
The purpose of electricity.
Induction type lift car ventilation fan of the present invention described further below in implementation process it is involved it is necessary,
Key technique content.
Invention content
Goal of the invention and advantageous effect：In actual operation, the ventilation fan in car is difficult normal work 2 years to elevator, when
After ventilation fan breaks down and reports for repairment, it usually cannot get the on-call maintenance of property management company.To ensure that owner uses the comfortable of elevator
The operational safety of property and elevator, induction type lift car ventilation fan of the present invention detect electricity automatically using human body sensing mode
In terraced car whether someone, boarding personnel once leave lift car, and the ventilation fan in lift car will maintain power supply 15 seconds
After automatically power off, realize the purpose that ventilation fan in lift car detects human body and safety utilization of electric power and economize on electricity automatically.
Circuit operation principle:Induction type lift car ventilation fan core circuit is an oscillation electricity in critical condition
When there is human body to walk close to inductive probe L (oscillator coil) in lift car, oscillating circuit is formed by elements such as inductive probe L for road
Frequency of oscillation will great changes will take place, force the oscillating circuit failure of oscillation in threshold oscillation state, and then make related circuit control
Make ventilation fan automatic opening.
N-channel field-effect tube BG1 and inductive probe L, oscillating capacitance C1, oscillating capacitance C2 form bikini and shake in circuit
Circuit is swung, to make bikini oscillating circuit reliable operation and stabilization, active component BG1 has selected N-channel field-effect tube.Work as oscillation
When the grid G of N-channel field-effect tube BG1 has a positive signal in circuit, since inverting function makes the leakage of N-channel field-effect tube BG1
Pole D signals be it is negative, oscillating capacitance C1, oscillating capacitance C2 the signal polarity at both ends be upper just lower negative, signal passes through capacitance C3
Feedback, make signal in N-channel field-effect tube BG1 grid Gs and original signal same-phase, because being positive feedback, circuit
Oscillation can be generated, the potentiometer RP of access can weaken positive feedback signal intensity in circuit, and potentiometer RP shakes for adjusting bikini
Swing circuit starting of oscillation critical value.
The frequency of oscillation of bikini oscillating circuit is about 37~40KHz, and frequency of oscillation is mainly by inductive probe L, oscillation electricity
Hold C1, oscillating capacitance C2 to determine.The size of positive feedback signal is adjusted in potentiometer RP, and bikini can be vibrated by adjusting potentiometer RP
Circuit is in firm starting of oscillation state.Resistance R1 is the biasing resistor of N-channel field-effect tube BG1.Faint oscillator signal passes through coupling
Capacitance C4 is sent to NPN type triode BG2 and carries out oscillating voltage amplification.Because amplified oscillating voltage amplitude is smaller, therefore select two
Germanium material diode, multiplication of voltage detection and filtered electrical are formed by detector diode D1~D2 and coupled capacitor C5, filter capacitor C7
Road, the DC voltage after detection filter can work normally NPN type triode BG3, at this moment the collector of NPN type triode BG3
In low level, DC relay J coils obtain it is electric be attracted contact, i.e.,：The normally-closed contact J-1 of DC relay J is disconnected, and makes to change
Gas fan dead electricity does not work.
As human body inductive probe L close in lift car, the oscillating circuit failure of oscillation immediately in oscillation critical condition leads to
The oscillating voltage of overcoupling capacitance C4 will disappear, and the base stage of NPN type triode BG3 cannot get forward voltage, make NPN type triode
BG3 ends, and discharges DC relay J coil losing electricities contact, i.e.,：The normally-closed contact J-1 of DC relay J is connected, and makes to change
Gas is fanned electric to start running.
Due to having accessed filter capacitor C7 in multiplication of voltage detection and filter circuit, it has filtering and delay double action concurrently.Filter
Wave capacitance C7 is required to one section of transfer process in charge and discharge, if its Capacity Selection is appropriate, can obtain about 15 seconds
Delay, when realizing human body far from inductive probe L, ventilation fan can remain in operation the requirement of more than ten seconds technologies.
Technical solution：Induction type lift car ventilation fan, it includes 6V D.C. regulated power supplies, bikini oscillating circuit, resistance
Hold amplifying circuit, multiplication of voltage detection and filter circuit, ventilation fan driving circuit, it is characterised in that：
Bikini oscillating circuit：It is by inductive probe L, oscillating capacitance C1, oscillating capacitance C2, capacitance C3, N-channel field-effect
Pipe BG1, biasing resistor R1, potentiometer RP and resistance R2 compositions, oscillating capacitance C1 are concatenated with oscillating capacitance C2 and are followed by potentiometer RP
One end, the other end of the oscillating capacitance C1 other ends and oscillating capacitance C2 connects the both ends of inductive probe L respectively, inductive probe L's
One end of upper termination capacitor C3, the other end of capacitance C3 are connected with the grid G of N-channel field-effect tube BG1, one end of resistance R1,
The other end of resistance R1 and the drain D of N-channel field-effect tube BG1 connect circuit anode VCC, N-channel field-effect tube by resistance R2
The source S of BG1 connects the other end of potentiometer RP and its one end of movable end and resistance R3, the other end and inductive probe of resistance R3
The lower termination circuit of L ground GND；
Rc-coupled amplification circuit：It is by coupled capacitor C4, NPN type triode BG2, biasing resistor R4 and load resistance R5 groups
Into, the emitter of a termination NPN type triode BG1 of coupled capacitor C4, another termination NPN type triode of coupled capacitor C4
The base stage of BG2 and one end of biasing resistor R4, another termination circuit anode VCC of biasing resistor R4, NPN type triode BG2's
Collector connects one end of load resistance R5, another termination circuit anode VCC of load resistance R5, the transmitting of NPN type triode BG2
Pole with connecing circuit GND；
Multiplication of voltage detection and filter circuit：It is by coupled capacitor C5, detector diode D1, detector diode D2 and filter capacitor
C7 is formed, and the collector of NPN type triode BG2 connects one end of coupled capacitor C5, another two pole of termination detection of coupled capacitor C5
The cathode of pipe D1 and the anode of detector diode D2, the cathode of detector diode D2 connect the anode of filter capacitor C7 and NPN type three
The base stage of pole pipe BG3, the anode of detector diode D1 and the cathode of filter capacitor C7 with connecing circuit GND；
Ventilation fan driving circuit：It is by NPN type triode BG3, DC relay J, silicon rectifier diode D3 and ventilation fan
Composition, the base stage of NPN type triode BG3 connect the cathode of detector diode D2, the collector of NPN type triode BG3 connect direct current after
One end of electric appliance J coils and the anode with silicon rectifier diode D3, the other end of DC relay J coils and with two pole of silicon rectifier
The cathode of pipe D3 meets circuit anode VCC, the emitter of NPN type triode BG3 with connecing circuit GND, DC relay J normally-closed contacts
The movable contact of J-1 meets 220V AC power zero line L, and the stationary contact of DC relay J normally-closed contacts J-1 is connect by ventilation fan
220V AC power zero line sides N；
6V D.C. regulated power supplies：It is by decompression capacitor C8, bleeder resistance R6 and silicon rectifier diode D4, silicon voltage regulator diode
DW, electrolytic capacitor C6 are formed, and the voltage stabilizing value of silicon voltage regulator diode DW is 6V, one end of decompression capacitor C8 and the one of bleeder resistance R6
Terminate the other end of 220V AC powers zero line L, decompression capacitor C8 and another termination silicon rectifier diode of bleeder resistance R6
The anode of D4, the cathode of silicon rectifier diode D4 connect the cathode of silicon voltage regulator diode DW and the anode of electrolytic capacitor C6, silicon voltage stabilizing
The anode of diode DW and the cathode of electrolytic capacitor C6 with connecing circuit GND；
The anode of 6V D.C. regulated power supplies is connected with circuit anode VCC, the cathode of 6V D.C. regulated power supplies with circuit GND
And 220V AC power zero line sides N is connected.
Description of the drawings
Attached drawing 1 is the circuit fundamental diagram of induction type lift car ventilation fan one embodiment provided by the invention.
Specific embodiment
According to attached induction type lift car ventilation fan circuit fundamental diagram shown in FIG. 1 and description of the drawings, and according to hair
Component technical parameter in each section circuit described in bright content between component described in connection relation and embodiment
It is required that and circuit production main points carry out implement the present invention can be realized, with reference to embodiments to the present invention the relevant technologies make into
The description of one step.
The selection of component is required with making
1. in order to improve the stability of circuit work, the BG1 in bikini oscillator circuit selects N-channel field-effect tube,
Its model 2SK422；
2. oscillating capacitance C1, oscillating capacitance C2 in bikini oscillator circuit, it is desirable that the tile electricity that selection work is stablized
Perhaps monolithic capacitor, it is desirable that oscillating capacitance C1 is equal with the capacity of oscillating capacitance C2；
3. inductive probe L is a coil for having intermediate frequency magnetic core, magnetic core selects the magnetic of transistor radio medium-wave antenna
Stick, interception bar magnet length are 20mm, using insulation board or bakelite cardboard that thickness is 1.5mm, make the baffle of 2 ￠ 20mm, 2
The concentric circle holes of a ￠ 10mm are respectively dug among a baffle, the both ends of ￠ 10mm magnetic cores, manufactured electricity are nested in using epoxy glue
Feel coil core skeleton, ￠ 0.25mm enameled wires is selected to be put down in magnetic core skeleton higher slice around 330 circles, finally with epoxy resin sealing
It is moisture-proof；
4. component title and technical parameter
Circuit production main points and circuit debugging
Because the circuit structure of induction type lift car ventilation fan is fairly simple, as long as the electronics member device selected under normal circumstances
Part performance is intact, and the component connection relation in attached drawing 1 is welded to specifications, physical connection line and welding quality warp
It crosses after going through correctly, circuit of the invention only needs simply debug and can work normally；
1. separate more than the circuit board element 55mm of inductive probe L requirements in induction type lift car ventilation fan circuit,
And circuit board cannot use metal shell, and require to fix inductive probe L using nonmetallic materials；
2. it is debugged using 6V D.C. regulated power supplies access circuit, the descending slow adjustment of resistance value of potentiometer RP,
With human body close to visit inductive probe L magnetic cores either end, at this moment the base voltage of NPN type triode BG3 should >=0.77V；
3. adjusting the sensitivity that potentiometer RP changes inductive probe L, if the resistance value adjustment of potentiometer RP is suitable, sensing is visited
The sensing human body distance of head L should ＞ 2.0m.
The circuit structure design of the present invention, components' placement and its face shaping design and its size etc. are
It is not the key technology of the present invention, nor claimed key technique content, of the invention specific because not influencing
The realization of implementation process and goal of the invention, therefore do not illustrate one by one in the description.
Claims (1)
1. a kind of induction type lift car ventilation fan, it includes 6V D.C. regulated power supplies, bikini oscillating circuit, capacitance-resistance amplification electricity
Road, multiplication of voltage detection and filter circuit, ventilation fan driving circuit, it is characterised in that：
The bikini oscillating circuit is by inductive probe L, oscillating capacitance C1, oscillating capacitance C2, capacitance C3, N-channel field-effect
Pipe BG1, biasing resistor R1, potentiometer RP and resistance R2 compositions, oscillating capacitance C1 are concatenated with oscillating capacitance C2 and are followed by potentiometer RP
One end, the other end of the oscillating capacitance C1 other ends and oscillating capacitance C2 connects the both ends of inductive probe L respectively, inductive probe L's
One end of upper termination capacitor C3, the other end of capacitance C3 are connected with the grid G of N-channel field-effect tube BG1, one end of resistance R1,
The other end of resistance R1 and the drain D of N-channel field-effect tube BG1 connect circuit anode VCC, N-channel field-effect tube by resistance R2
The source S of BG1 connects the other end of potentiometer RP and its one end of movable end and resistance R3, the other end and inductive probe of resistance R3
The lower termination circuit of L ground GND；
The rc-coupled amplification circuit is made of coupled capacitor C4, NPN type triode BG2, biasing resistor R4 and load resistance R5,
The emitter of a termination NPN type triode BG1 of coupled capacitor C4, another termination NPN type triode BG2's of coupled capacitor C4
One end of base stage and biasing resistor R4, another termination circuit anode VCC of biasing resistor R4, the collector of NPN type triode BG2
One end of load resistance R5, another termination circuit anode VCC of load resistance R5 are connect, the emitter of NPN type triode BG2 connects electricity
Road ground GND；
The multiplication of voltage detection and filter circuit：It is by coupled capacitor C5, detector diode D1, detector diode D2 and filtered electrical
Hold C7 compositions, the collector of NPN type triode BG2 connects one end of coupled capacitor C5, another termination detection two of coupled capacitor C5
The cathode of pole pipe D1 and the anode of detector diode D2, the cathode of detector diode D2 connect the anode and NPN type of filter capacitor C7
The base stage of triode BG3, the anode of detector diode D1 and the cathode of filter capacitor C7 with connecing circuit GND；
The ventilation fan driving circuit is by NPN type triode BG3, DC relay J, silicon rectifier diode D3 and ventilation fan group
Into the base stage of NPN type triode BG3 connects the cathode of detector diode D2, and the collector of NPN type triode BG3 connects direct current relay
One end of device J coils and the anode with silicon rectifier diode D3, the other end and and silicon rectifier diode of DC relay J coils
The cathode of D3 meets circuit anode VCC, the emitter of NPN type triode BG3 with connecing circuit GND, DC relay J normally-closed contacts J-
1 movable contact meets 220V AC power zero line L, and the stationary contact of DC relay J normally-closed contacts J-1 meets 220V by ventilation fan
AC power zero line side N；
The 6V D.C. regulated power supplies are by decompression capacitor C8, bleeder resistance R6 and silicon rectifier diode D4, silicon voltage regulator diode
DW, electrolytic capacitor C6 are formed, and the voltage stabilizing value of silicon voltage regulator diode DW is 6V, one end of decompression capacitor C8 and the one of bleeder resistance R6
Terminate the other end of 220V AC powers zero line L, decompression capacitor C8 and another termination silicon rectifier diode of bleeder resistance R6
The anode of D4, the cathode of silicon rectifier diode D4 connect the cathode of silicon voltage regulator diode DW and the anode of electrolytic capacitor C6, silicon voltage stabilizing
The anode of diode DW and the cathode of electrolytic capacitor C6 with connecing circuit GND；
The anode of the 6V D.C. regulated power supplies is connected with circuit anode VCC, and the cathode of 6V D.C. regulated power supplies is with circuit
GND and 220V AC power zero line sides N is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138629.0A CN108223417A (en) | 2018-02-10 | 2018-02-10 | Induction type lift car ventilation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138629.0A CN108223417A (en) | 2018-02-10 | 2018-02-10 | Induction type lift car ventilation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108223417A true CN108223417A (en) | 2018-06-29 |
Family
ID=62661435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810138629.0A Withdrawn CN108223417A (en) | 2018-02-10 | 2018-02-10 | Induction type lift car ventilation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108223417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607348A (en) * | 2018-12-18 | 2019-04-12 | 佛山市昌宏电梯机械有限公司 | A kind of anti-tenesmus of elevator, hypervelocity, accidental movement protect system control lines |
-
2018
- 2018-02-10 CN CN201810138629.0A patent/CN108223417A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607348A (en) * | 2018-12-18 | 2019-04-12 | 佛山市昌宏电梯机械有限公司 | A kind of anti-tenesmus of elevator, hypervelocity, accidental movement protect system control lines |
| CN109607348B (en) * | 2018-12-18 | 2023-12-05 | 佛山市昌宏电梯机械有限公司 | Elevator anti-falling, overspeed and accidental movement protection system control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180629 |