CN105679606B - A kind of wireless zero passage on-off switch and control method based on electromagnetic relay - Google Patents
A kind of wireless zero passage on-off switch and control method based on electromagnetic relay Download PDFInfo
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- CN105679606B CN105679606B CN201610058915.7A CN201610058915A CN105679606B CN 105679606 B CN105679606 B CN 105679606B CN 201610058915 A CN201610058915 A CN 201610058915A CN 105679606 B CN105679606 B CN 105679606B
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- 238000000034 method Methods 0.000 title abstract description 10
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000001934 delay Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010891 electric arc Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
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- Relay Circuits (AREA)
Abstract
The present invention relates to a kind of wireless zero passage on-off switch and control method based on electromagnetic relay, realize that single-phase alternating current is converted to Rectified alternating current using transformer and rectification circuit, pulse direct current is converted to using shaping circuit and then by Rectified alternating current, as the external interrupt signal of single-chip microcontroller, zero-crossing examination is realized；After single-chip microcontroller receives pulse interrupt, by pulse period and relay response time difference as delay time after, starting relay carries out switching, realization single-phase alternating current accurately zero crossing switching.A kind of wireless zero passage on-off switch and control method based on electromagnetic relay proposed by the invention, will not generate electric arc, reduce switching loss, can reach energy-saving effect；After the rectified filtering of transformer secondary output output voltage, it can power to SCM system.Meanwhile using wireless control load switch, electric wire can be saved, installation cost is saved.
Description
Technical field
The present invention relates to a kind of intelligent energy-saving electrical appliance switch, especially a kind of wireless zero passage on-off based on electromagnetic relay
Switch and control method.
Background technique
In household electricity, it is not zero due to switching in the electrical power for turning on and off moment two sides, will cause certain electricity
It can be lost, or even electric arc can be generated, this greatly influences the service life of switch.Meanwhile it needing to carry out pole when installing household electrical appliance
For complicated wiring, this increases not only the difficulty of construction volume and household electrical appliance installation during house decoration, while greatly
The electric wire of amount also increases the cost of household electrical appliances installation.In addition, the switch arrangement of dispersion is but also user is more inconvenient when in use.
In conclusion also there is no suitable household electrical appliances mount scheme that can overcome disadvantage mentioned above.
Summary of the invention
The present invention is directed to the deficiency of existing household electricity electric switch, and it is logical to propose a kind of zero passage based on electromagnetic relay
Disconnected wireless switching, to overcome defect existing in the prior art.
To achieve the above object, the technical scheme is that a kind of wireless zero passage on-off based on electromagnetic relay is opened
It closes, a plurality of relay module is provided；Power supply line, the other end and the relay module pair are accessed in described relay module one end
The load answered is connected, including a zero crossing detection module, a single chip control module, a wireless communication module and one and the nothing
The matched wireless remote control module of line communication module；Power supply line is accessed in one end of the zero crossing detection module, the other end with it is described
Single chip control module is connected；The single chip control module is connected with the relay module；The single chip control module
Also it is connected with the wireless communication module.
In an embodiment of the present invention, the zero crossing detection module includes: transformer circuit, rectifier circuit and shaping
Circuit；The transformer circuit includes a step-down transformer TR1；The rectifier circuit includes a rectifier bridge BR1；The shaping
Circuit includes: first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, first capacitor C1 and the first triode
Q1；220V exchange is electrically connected the step-down transformer TR1 primary side, and the secondary side access of the step-down transformer TR1 is described whole
The ac input end of bridge BR1 is flowed, the positive pin of the rectifier bridge BR1 is separately connected the first resistor R1 and second electricity
One end of R2 is hindered, the other end of the second resistance R2 is separately connected one end of the 3rd resistor R3, the first capacitor C1
One end and the first triode Q1 base stage, the collector of the first triode Q1 is respectively connected to the 4th resistance
The interrupt interface of chip, the other end connection of the 4th resistance R4 are controlled in one end of R4 and the single chip control module
Power supply VCC；The negative pin of the rectifier bridge BR1 is separately connected the other end of the first resistor R1, the 3rd resistor R3
The other end, the other end of the first capacitor C1 and the emitter of the first triode Q1.
It in an embodiment of the present invention, further include a power module powered for the single chip control module；The electricity
Source module includes diode D1,7805 voltage stabilizing chips, the second capacitor C2, third capacitor C3, the 4th capacitor C4 and the 5th capacitor
C5；The anode of the diode D1 is connected with the positive pin of the rectifier bridge BR1, and the cathode of the diode D1 is separately connected
One end, one end of the 4th capacitor C4 and the input terminal of 7805 chip of the second capacitor C2；7805 core
The output end of piece is separately connected one end of the 5th capacitor C5 and one end of the third capacitor C3,7805 chip
Output end out-put supply VCC；The other end of the second capacitor C2, the other end of the third capacitor C3, the 4th capacitor
The ground terminal of the other end of C4, the other end of the 5th capacitor C5 and 7805 voltage stabilizing chip is connected to the rectification
The negative pin of bridge BR1.
In an embodiment of the present invention, the relay module includes: the 5th resistance R5, the second triode Q2 and relay
Device RL；One end that chip connects the 5th resistance R5 is controlled in the single chip control module, the 5th resistance R5's is another
One end connects the base stage of the second triode Q2, and the collector of the second triode Q2 connects power supply VCC, and the described 2nd 3
The emitting stage of pole pipe Q2 connects one end of the coil of the relay RL, and the first contact of the relay Rl connects the one of load
Power supply line is accessed in end, the second contact；The cathode that one end of the coil of the relay RL is connected to the rectifier bridge BR1 draws
Foot.
Further, a kind of wireless zero-crossing on and off control method based on electromagnetic relay is also provided, single-chip microcontroller controls mould
Block detects point of zero voltage and current zero by zero crossing detection module, and is in interrupt latency state；When user passes through wirelessly
When remote control module issues actuation instruction, the single chip control module controls relay mould by delays time to control, in point of zero voltage
Block switching；When user issues open command by wireless remote control module, the single chip control module passes through delays time to control,
Current zero controls relay module and disconnects.
In an embodiment of the present invention, the timing judgement in delays time to control is realized in accordance with the following steps:
Step S1: the pulse period is exported according to the zero crossing detection module by single chip control module and relay is flat
It opens lead or relay averagely closes lead, the delay time length after setting relay module interruption；
Step S2: detect whether the single chip control module has interrupt response；
Step S3: at the interrupt response moment, described machine control module averagely opened according to the relay lead or
The relay averagely closes lead, controls the relay module and is attracted or disconnects；
Step S4: detecting the relay module actual act moment, and judges the relay module practical actuation or disconnected
Open whether the moment matches with the interrupt response moment, if so, going to step S5；Otherwise, step S6 is gone to；
Step S5: do not correct that the relay averagely opens lead or the relay averagely closes lead then；
Step S6: described machine control module is according to the practical actuation of the relay module or disconnection moment and the interruption
The difference amendment relay at response moment averagely opens lead or the relay averagely closes lead.
Compared to the prior art, the invention has the following advantages:
1. killing two birds with one stone, transformer also constitutes single-chip microcontroller power supply after treatment both as sensor.It realizes
The Super-zero control of household electricity, has saved household electricity, improves the service life of Household appliance switch.
2. realizing the wireless control of household electrical appliance by wireless communication, electric wire is saved.
It is not only beautiful and practical 3. originally fixed mechanical switch to be changed to the switch of wireless remote control type, it can allow user
Easily use.
Detailed description of the invention
Fig. 1 is the functional block diagram of the wireless zero passage on-off switch the present invention is based on electromagnetic relay.
Fig. 2 is the zero cross detection circuit of the wireless zero passage on-off switch the present invention is based on electromagnetic relay.
Fig. 3 is the single chip control module of the wireless zero passage on-off switch the present invention is based on electromagnetic relay.
Fig. 4 is the microcontroller power supply circuit of the wireless zero passage on-off switch the present invention is based on electromagnetic relay.
Fig. 5 is that the relay zero-crossing of the wireless zero passage on-off switch the present invention is based on electromagnetic relay is attracted (disconnection) method
Flow chart.
Fig. 6 is the zero passage sampling and actuation (disconnection) principle of the wireless zero passage on-off switch the present invention is based on electromagnetic relay
Figure.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
In the present embodiment, as illustrated in fig. 1 and 2,220V alternating current forms pulsating direct current waveform after passing through decompression, rectification,
Pulsating dc voltage using capacitor filtering, filters off radio-frequency component, forms B point voltage waveform after electric resistance partial pressure；When B point
When voltage is greater than 0.7V, triode Q2 conducting forms low level in transistor collector；When B point voltage is lower than 0.7V, three poles
Pipe cut-off, transistor collector form high level by pull-up resistor R4.Pass through the conducting repeatedly of triode, cut-off in this way,
Singlechip chip zero passage detection port C point forms 100Hz impulse waveform.Such as Fig. 3, singlechip chip detects voltage by judgement
Zero point, control the actuating of relay.As shown in figure 4, the circuit of Transformer Rectifier passes through filtering voltage regulation module, continue to give monolithic machine core
Piece power supply.Voltage regulator circuit and detection circuit are come by diode-isolated, influence zero passage detection by filtering.Relay
Common end and normally opened contact start to exchange fire respectively line and load (multiple relays can be connect to control multichannel loading).In use, using
Person presses remote controler, and remote controler issues wireless signal, and when single-chip microcontroller receives the signal of remote controler sending, singlechip interruption is connect
Mouth is waited for, and when singlechip interruption pin is triggered, singlechip chip drives relay advancement, is allowed corresponding
Relay is closed in next point of zero voltage, to realize operating passing zero technology.When needing disconnecting circuit, remote controler issues letter
Number, after single-chip microcontroller receives signal, the relationship by calculating voltage and current phase calculates overcurrent zero point, then controls relay
Device is disconnected in current zero-crossing point.
Further, in the present embodiment, voltage signal is detected using adaptive control algorithm.As shown in figure 5, control
The process of algorithm is as follows: since the voltage after triode is pulse voltage, frequency increases to i.e. twice 100Hz by 50Hz,
That is period 10ms.It is initial as default that this batch of relay used in having one in controller storage inside averagely opens lead TON
Value.When needing attraction circuit, the initial value in advance of relay actuation is set according to TON；Whether detection single-chip microcontroller has interruption
Response makes the actuating of relay according to initial value by interrupting the moment；Relay actual act moment and interrupt response moment are detected,
And judge whether to coincide；If so, initial value is chosen properly, conversely, according to the detection practical pickup time point of relay and when interrupting
Between put difference amendment preset value.
As shown in fig. 6, for the zero passage sampling in the present embodiment and being attracted schematic diagram.Set t0Moment is sampled point.According to
Voltage cycle T=10ms and default open lead TON and choose TX, then lead initial value is TX-TON；In the present embodiment,
If T >=TON, TX=T；Such as T<TON, then TX=(N+1) T, N is integer, is taken since 1 toward big value, until TX>TON.In head
It is secondary be connected to open relay signal after, i.e., supply voltage zero passage when, be delayed TX-TON after single-chip microcontroller issue order allow relay to close
It closes, since the delay time of relay is TON, therefore theoretically relay is attracted after NT after sampled point, to realize
No-voltage is open-minded, and in the present embodiment, TX-TON+TON=TX=NT, N are the integer more than or equal to 1.With post-sampling relay
The voltage at contact both ends is calculated by filtering, if pickup time, exactly in voltage over zero, lead TON is constant；If
Shift to an earlier date than zero crossing, then TON=TON- lead is made to TON again assignment；If lagged than zero crossing, to TON again assignment
Make TON=TON+ hysteresis.By correcting several times, operating passing zero can be completed.
The time point setting that relay disconnects is similar with actuation.In the present embodiment, voltage and current phase relation calculates
Process is as follows: carrying out pull-type transformation to load impedance according to the parameter of load first, obtains loading about S and load impedance ginseng
S=jw is finally substituted into expression formula and obtains load impedance Z=R+jX by several expression formulas.Calculating load impedance Z=| Z | ∠ Φ z,
In, | Z |=√ (R2+X2) it is modulus of impedance, Φ z=arctan (X/R) is impedance angle.Then Φ z is the phase for indicating load voltage and electric current
Potential difference, and T1=Φ z*T/180 (T 10ms) is then the time difference of voltage over zero and current zero-crossing point.It is deposited inside controller
This batch of relay used in containing one averagely closes lead TOFF as default initial values, sets relay according to TOFF and T1
The initial value in advance that device disconnects；Whether detection single-chip microcontroller has interrupt response, by interrupting the moment, receives interrupt signal in single-chip microcontroller
Afterwards, the actuating of relay is allowed using NT+T1-TOFF, N is nonnegative integer, is taken since 0 toward big value, until NT+T1-TOFF > 0.
Further, in the present embodiment, by taking the load of 6 tunnels as an example.If load is all fluorescent lamp, No. 1-6 of remote controler
Button controls 1-6 fluorescent lamp respectively.It is daylight by after lower button if current state is to open for each fluorescent lamp
Lamp is closed；Conversely, being opened if being currently in off state by fluorescent lamp after lower button.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (5)
1. a kind of wireless zero passage on-off switch based on electromagnetic relay, provides a plurality of relay module；The relay mould
Power supply line is accessed in block one end, and other end load corresponding with the relay module is connected, which is characterized in that examines including a zero passage
Survey module, a single chip control module, a wireless communication module and one and the matched wireless remote control of the wireless communication module
Module；Power supply line is accessed in one end of the zero crossing detection module, and the other end is connected with the single chip control module；The list
Piece machine control module is connected with the relay module；The single chip control module is also connected with the wireless communication module；
The zero crossing detection module includes: transformer circuit, rectifier circuit and shaping circuit；The transformer circuit includes
One step-down transformer TR1；The rectifier circuit includes a rectifier bridge BR1；The shaping circuit includes: first resistor R1,
Two resistance R2,3rd resistor R3, the 4th resistance R4, first capacitor C1 and the first triode Q1；Described in 220V exchange electrical connection
Step-down transformer TR1 primary side, the secondary side of the step-down transformer TR1 access the ac input end of the rectifier bridge BR1, institute
The positive pin for stating rectifier bridge BR1 is separately connected one end of the first resistor R1 Yu the second resistance R2, second electricity
The other end of resistance R2 is separately connected one end and the one or three pole of one end of the 3rd resistor R3, the first capacitor C1
The base stage of pipe Q1, the collector of the first triode Q1 be respectively connected to the 4th resistance R4 one end and the single-chip microcontroller
The interrupt interface of chip is controlled in control module, the other end of the 4th resistance R4 connects power supply VCC；The rectifier bridge BR1
Negative pin be separately connected the other end of the first resistor R1, the other end of the 3rd resistor R3, the first capacitor
The emitter of the other end of C1 and the first triode Q1.
2. a kind of wireless zero passage on-off switch based on electromagnetic relay according to claim 1, which is characterized in that also wrap
One is included as the power module of single chip control module power supply；The power module include diode D1,7805 voltage stabilizing chips,
Second capacitor C2, third capacitor C3, the 4th capacitor C4 and the 5th capacitor C5；Anode and the rectifier bridge of the diode D1
The positive pin of BR1 is connected, and the cathode of the diode D1 is separately connected one end of the second capacitor C2, the 4th capacitor
The input terminal of one end of C4 and 7805 chip；The output end of 7805 chip is separately connected the 5th capacitor C5's
One end and one end of the third capacitor C3, the output end out-put supply VCC of 7805 chip；The second capacitor C2's
The other end, the other end of the third capacitor C3, the other end of the 4th capacitor C4, the 5th capacitor C5 the other end with
And the ground terminal of 7805 voltage stabilizing chip is connected to the negative pin of the rectifier bridge BR1.
3. a kind of wireless zero passage on-off switch based on electromagnetic relay according to claim 1, which is characterized in that described
Relay module includes: the 5th resistance R5, the second triode Q2 and relay RL；Core is controlled in the single chip control module
Piece connects one end of the 5th resistance R5, and the other end of the 5th resistance R5 connects the base stage of the second triode Q2,
The collector of the second triode Q2 connects power supply VCC, and the emitting stage of the second triode Q2 connects the relay RL
Coil one end, the relay RL the first contact connection load one end, the second contact access power supply line；It is described after
One end of the coil of electric appliance RL is connected to the negative pin of a rectifier bridge BR1.
4. a kind of wireless zero passage on-off switch based on electromagnetic relay according to claim 1, which is characterized in that monolithic
Machine control module detects point of zero voltage and current zero by zero crossing detection module, and is in interrupt latency state；Work as user
When issuing actuation instruction by wireless remote control module, the single chip control module is controlled by delays time to control in point of zero voltage
Relay module switching；When user issues open command by wireless remote control module, the single chip control module is by prolonging
When control, current zero control relay module disconnect.
5. a kind of wireless zero passage on-off switch based on electromagnetic relay according to claim 4, which is characterized in that according to
Following steps realize the timing judgement in delays time to control:
Step S1: the pulse period is exported according to the zero crossing detection module by single chip control module and relay is averagely opened
It opens lead or relay averagely closes lead, the delay time length after setting relay module interruption；
Step S2: detect whether the single chip control module has interrupt response；
Step S3: at the interrupt response moment, described machine control module averagely opens lead or described according to the relay
Relay averagely closes lead, controls the relay module and is attracted or disconnects；
Step S4: detecting the relay module actual act moment, and judge the relay module it is practical actuation or disconnection when
It carves and whether is matched with the interrupt response moment, if so, going to step S5；Otherwise, step S6 is gone to；
Step S5: do not correct that the relay averagely opens lead or the relay averagely closes lead then；
Step S6: the single chip control module is rung according to the practical actuation of the relay module or disconnection moment and the interruption
The difference for answering the moment, corrects that the relay averagely opens lead or the relay averagely closes lead.
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| CN201610058915.7A CN105679606B (en) | 2016-01-28 | 2016-01-28 | A kind of wireless zero passage on-off switch and control method based on electromagnetic relay |
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| CN201610058915.7A CN105679606B (en) | 2016-01-28 | 2016-01-28 | A kind of wireless zero passage on-off switch and control method based on electromagnetic relay |
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| CN105679606B true CN105679606B (en) | 2018-12-25 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506318B (en) * | 2017-04-13 | 2022-05-17 | 深圳和而泰智能控制股份有限公司 | Relay control method, control circuit and processor |
| CN106940400A (en) * | 2017-05-05 | 2017-07-11 | 深圳市诺尔安磁检测科技有限公司 | Phase angle on-off controller and its application method |
| CN109036964B (en) * | 2018-08-11 | 2020-05-08 | 深圳市健思研科技有限公司 | Control method for preventing contact adhesion, storage medium, control device and relay |
| TWI702628B (en) * | 2019-01-11 | 2020-08-21 | 旺玖科技股份有限公司 | Switch device capable of automatically detecting and adjusting zero cross point |
| CN111725025B (en) * | 2020-05-28 | 2022-09-27 | 叶锦堂 | Relay zero-crossing switch correction method, detection correction circuit and controller |
| CN114447893B (en) * | 2021-12-24 | 2023-11-21 | 镇江华扬机车车辆附件有限公司 | High-voltage direct-current switch and method for controlling on-off of load by same |
| CN113970891B (en) * | 2021-12-27 | 2022-07-05 | 深圳市恒讯通科技有限公司 | Thing networking switch based on zero cross detection control |
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| US20090027824A1 (en) * | 2003-09-03 | 2009-01-29 | Vantage Controls, Inc. | Current Zero Cross Switching Relay Module Using A Voltage Monitor |
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