CN107845245A - A kind of wireless control system of frequency converter - Google Patents
A kind of wireless control system of frequency converter Download PDFInfo
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- CN107845245A CN107845245A CN201710780852.0A CN201710780852A CN107845245A CN 107845245 A CN107845245 A CN 107845245A CN 201710780852 A CN201710780852 A CN 201710780852A CN 107845245 A CN107845245 A CN 107845245A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a kind of wireless control system of frequency converter, including frequency converter, remote control, control box, transmitting terminal is used as by the use of remote control, control box is as control terminal, the controlled in wireless to frequency converter is realized by the use of 433MHz electromagnetic waves as medium, command range is remote, and avoids the laying of RS485 communication lines, builds simple.The control system of the structure can be widely applied to industry or home automation controlling.
Description
Technical field
The present invention relates to a kind of regulating system, more particularly to a kind of control system of frequency converter.
Background technology
For current alternating current generator typically by Frequency Converter Control, the frequency converter is to apply converter technique and microelectric technique,
The electric control appliance of alternating current generator is controlled by changing alternating current generator working power Frequency Patterns.
The control interface of existing frequency converter generally comprises：It is positive turn to end, counter steer end, 5V power output ends, common port,
Speed adjustment end, RS485 communication terminals, it is as follows for the functional explanation of each control interface of frequency converter：
It is positive to turn to end：Refer to that frequency converter can be by responding to the high and low level for inputting the end, controlled motor just turns to；
Counter steer end：Refer to that frequency converter can be by responding to the high and low level for inputting the end, controlled motor counter steer；5V electricity
Source output terminal：It is 5V to refer to the voltage difference between the end and common port；Common port：Frequency converter is referred to ensure external circuit
With frequency converter internal circuit there is identical and set connection end；Speed adjustment end：Refer to that frequency converter can respond to pass through
Terminal voltage value adjustment frequency converter inner parameter is inputted so as to realize that the magnitude of voltage by the end adjusts the speed of motor； RS485
Communication terminal：Refer to the RS485 communication interfaces of frequency converter.
Control for frequency converter typically has both of which, Yi Zhongwei：By between 5V power output ends and common port
Potentiometer is set, is then connected the adjustment end of potentiometer with the speed adjustment end in potentiometer, adjusts the tune on potentiometer
Voltage on whole end controls frequency converter.This control mode can not carry out far distance controlled, can only be closely with hand adjustment section
Potentiometer, it is cumbersome.Another kind is：By the connecting communication line on RS485 communication terminals, carried out using RS485 agreements wired
Communication, however, wired RS485 communication build complexity, to communication wire rod require it is also high, in telecommunication, it is necessary to install additional in
Between optical isolation amplifier, workload is big, and investigation is difficult when line fault triggers Communication.
The content of the invention
It is an object of the invention to provide one kind to build simply, and can be with the frequency converter control system of far distance controlled.
The present invention solve its technical problem solution be：A kind of wireless control system of frequency converter, including frequency converter,
The frequency converter is provided with：It is positive to turn to end, counter steer end, 5V power output ends, common port, speed adjustment end, the common port pair
Ground connects, and the wireless control system also includes：Remote control, control box, the remote control include：Button, EV1527 coding cores
Piece, F115 transmitting chips, transmitting antenna, the button is connected with the key-press input pin of the EV1527 coding chips, described
The Serial output pin of EV1527 coding chips is connected with the data input pin of the F115 transmitting chips, the F115 transmitting chips
Data output pins be connected by the first matching network with the transmitting antenna, the control box includes：5 connecting lines, surpass
Heterodyne reception module, decoding circuit, the superheterodyne reception module include：Reception antenna, SYN520R reception chips, it is described to connect
Receive antenna to be connected with the reception antenna RF signal input parts of the SYN520R reception chips by the second matching network, the solution
Code circuit includes：The learning-oriented decoding chips of TCT6227,24C02N storage chips, the learning-oriented decoding chips of TCT6227 pass through
I2C bus protocols are connected with the 24C02N storage chips, and the power end of the learning-oriented decoding chips of TCT6227 passes through first
Connecting line is connected with the 5V power output ends, and the earth terminal of the learning-oriented decoding chips of TCT6227 passes through the 3rd connecting line
Be connected with the common port, first, second, third I/O mouths of the learning-oriented decoding chips of TCT6227 respectively by the 5th,
Four, the second connecting lines and the counter steer end, just turning to end, speed adjustment end is connected, the transmitting antenna and the reception
Antenna wireless connects.
Further, second matching network is made up of first, second electric capacity, first, second inductance, first inductance
Respectively with second inductance, the first electric capacity and connecing, the second electric capacity, institute are concatenated between first inductance and second inductance
The reception antenna RF signal input parts for stating SYN520R reception chips are concatenated by the second electric capacity with the reception antenna.
Further, the length of the reception antenna is 167mm, the capacitance of first, second electric capacity be respectively 6.8pF,
1.8pF, the inductance value of first, second inductance is respectively 39nH, 56nH.
Further, first matching network is made up of the four, the 5th electric capacity, the 3rd inductance, the 4th electric capacity and institute
The 3rd inductance concatenation is stated, described 5th electric capacity one end is connected with the 3rd inductance, transmitting antenna respectively, and the F115 launches core
The data output pins of piece are connected by the 4th electric capacity, the 3rd inductance with the transmitting antenna.
Further, the length of the transmitting antenna is 167mm, and the capacitance of the four, the 5th electric capacity is respectively：10pF and
5pF, the inductance value of the 3rd inductance is 56nH.
Further, the decoding circuit is provided with the first indicator lamp, the positive pole of first indicator lamp by resistance with it is described
The serial clock pin connection of 24C02N storage chips, the negative pole of the indicator lamp connect over the ground.
Further, the remote control also includes the second indicator lamp, the positive pole of second indicator lamp by resistance with it is described
The Serial output pin connection of EV1527 coding chips, the negative pole of second indicator lamp connect over the ground.
The beneficial effects of the invention are as follows：The invention is by the use of remote control as transmitting terminal, and control box is as control terminal, profit
By the use of 433MHz electromagnetic waves as medium realization to the controlled in wireless of frequency converter, command range is remote, and avoids RS485 connections
The laying on road, build simple.The control system of the structure can be widely applied to industry or home automation controlling.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described.Obviously, described accompanying drawing is the part of the embodiment of the present invention, rather than is all implemented
Example, those skilled in the art on the premise of not paying creative work, can also obtain other designs according to these accompanying drawings
Scheme and accompanying drawing.
Fig. 1 is the framework connection diagram of control system；
Fig. 2 is the circuit connection diagram of control box；
Fig. 3 is the circuit connection diagram of remote control.
Embodiment
Carried out below with reference to the design of embodiment and accompanying drawing to the present invention, concrete structure and caused technique effect clear
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/annexations, not singly refer to component and directly connect, and refer to be added deduct by adding according to specific implementation situation
Few couple auxiliary, to form more excellent draw bail.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Embodiment 1, with reference to figure 1, Fig. 2, Fig. 3, a kind of wireless control system of frequency converter, including：Frequency converter, control box,
Remote control, the frequency converter are drawn by terminal a3：The positive end FWD, counter steer end REV, 5V power output end+5V, public of turning to
COM, speed adjustment end VR are held, the control box includes：First, second, third, fourthth, the 5th connecting line a51, a52, a53,
A54, a55, superheterodyne reception module a2, decoding circuit a1.
With reference to Fig. 2, the decoding circuit a1 includes：Learning-oriented decoding chip U1,24C02N the storage chip U3 of TCT6227,
The learning-oriented decoding chip U1 of TCT6227 are connected by I2C bus protocols with the 24C02N storage chips U3, described
The power end 4/VDD of the learning-oriented decoding chips of TCT6227 is connected by the first connecting line a51 with the 5V power output ends+5V,
The earth terminal 11/VSS of the learning-oriented decoding chips of TCT6227 is connected by the 3rd connecting line a53 with the common port COM.
The learning-oriented decoding chip U1 of TCT6227 are a learning-oriented decoding chips, and it can carry out mould to its I/O mouths
Formula configures, wherein, in the present embodiment, the learning-oriented decoding chip U1 of TCT6227 the 4th I/O mouths 5 are configured as：Input or output
Meet the serial data mode of I2C agreements；The 5th I/O mouths 6 of the learning-oriented decoding chip U1 of TCT6227 are configured as：It is defeated
Go out to meet the serial clock signal pattern of I2C agreements；The 6th I/O mouths 7 of the learning-oriented decoding chip U1 of TCT6227 are configured
For：Scan pattern；The first, second I/O mouths 13,14 of the learning-oriented decoding chip U1 of TCT6227 are each configured to：Self-locking exports
Pattern；The 3rd I/O mouths 8 of the learning-oriented decoding chip U1 of TCT6227 are configured to：PWM output modes；
The self-locking output mode refers to：Self-locking exports high level or low level；The scan pattern refers to：Pin can not
Disconnected scanning receives the level for being sent to the pin.
The first I/O mouths 13, the 2nd I/O mouths 14 pass through the five, the 4th connecting line a55, a54 and the counter steer respectively
REV, positive steering end FWD connections are held, can be by exporting high level or low level control frequency converter counter steer or positive steering.
The 4th I/O mouths 5 are connected with the serial data pin SDA of the 24C02N storage chips U3, the 5th I/O mouths 6
It is connected with the serial clock pin SCL of the 24C02N storage chips U3, the 4th I/O mouths 5, the 5th I/O mouths 6 can pass through
I2C agreements communicate with the 24C02N storage chips U3.
The 3rd I/O mouths 8 respectively by the second connecting line a52 and the speed adjustment end VR, the 3rd electric capacity C3 one
End concatenation, the other end of the 3rd electric capacity C3 connect over the ground, the 8 exportable PWM waveform of the 3rd I/O mouths, in the 3rd electric capacity
In the presence of C3, the PWM waveform can form this range of voltages value of 0.4V-5V, so as to utilize these different size of magnitudes of voltage
Speed adjustment end VR is input to, controls frequency converter.
The superheterodyne reception module a2 includes：Reception antenna T1, SYN520R reception chip U2, the reception antenna T1
It is connected by the second matching network a21 with the reception antenna RF signal input parts ANT of the SYN520R reception chips U2, it is described
SYN520R reception chips U2 includes basic peripheral cell, wherein, pin RO1, RO2 of the SYN520R reception chips U2 connect
9.81563MHz crystal oscillator is connect, the crystal oscillator provides basic clock pulses for the SYN520R reception chips U2, described
SYN520R reception chips U2 pin CAGC, CTH, VCC is connected over the ground by electric capacity, and the pin VCC is also connected with 5V power supplys
Output end+5V, electric energy, the demodulating data output end D0 of the SYN520R reception chips U2 are obtained from 5V power output ends+5V
It is connected with the learning-oriented decoding chip U1 of the TCT6227 the 6th I/O mouths 7.
With reference to Fig. 3, the remote control includes：The command information of operation, reverse turn operation or speed governing operation is rotated forward for producing
Button S1, S2, S3, for the command information is encoded EV1527 coding chips U4, for by the life after coding
Make information be modulated and be converted into the F115 transmitting chips U5 of modulated signal, for the modulated signal to be converted into 433MHz's
The transmitting antenna T2, described button S1, S2, S3 of electromagnetic wave respectively the key-press input pin K0 with the EV1527 coding chips U4,
K1, K2 are connected, and described button S1, S2, S3 one end are all connected with+12V power supplys, and described button S1, S2, S3 other end lead to respectively
Cross resistance to connect over the ground ,+12V the power supplys by 12V batteries by terminals P1 by being provided, when user needs to rotate forward, inverts
Or during speed governing operation, by pressing keys, button turns on simultaneously connection over the ground and produces low level, and the low level is input to described
EV1527 coding chips U4 key-press input pin K0, K1, K2 forms command information, and the EV1527 coding chips U4 orders this
Information is encoded and forms coded data, the Serial output pin TXD that the coded data passes through the EV1527 coding chips U4
It is sent in the data input pin ASK of the F115 transmitting chips U5, the F115 transmitting chips U5 enters to the coded data
Row modulation, the coded data is loaded into 433MHz carrier wave and forms modulated signal, the data of the F115 transmitting chips U5
Output pin PAOUT is connected by the first matching network a4 with the transmitting antenna T2, and by the modulated signal by launching day
Line T2 is sent with 433MHz electromagnetic wave.As optimization, in the Serial output pin TXD connections of the EV1527 coding chips
Second indicator lamp LED2, the second indicator lamp LED2 positive pole passes through resistance and the Serial output of the EV1527 coding chips
Pin TXD connections, the negative pole of the second indicator lamp LED2 connects over the ground, when the Serial output pin of the EV1527 coding chips
When signal transmission occurs for the TXD and F115 transmitting chips U5, the second indicator lamp LED2 can pass through the height of transport stream signal
Low level enters line flicker, so as to judge the Serial output pin TXD of the EV1527 coding chips and the F115 transmitting chips U5
Signal transmission whether occurs, facilitates research staff to debug.
The operation principle of the invention is：User is before use, need to arrange which button performs which kind of operation, and general
The coded data of the button is stored in the 24C02N storage chips U3.
So that button S1 performs positive steering operation as an example, when button S1 is pressed, the EV1527 coding chips U4's presses
Key input pin K0 receives low level, and now, key-press input pin K0, K1, K2, K3 of the EV1527 coding chips U4 level are
0111（" 0 " represents low level, and " 1 " represents high level, and EV1527 coding chips U4 key-press input pin is defaulted as high level）, this
When " 0111 " be referred to as command information, the EV1527 coding chips U4 carries out binary coding to the command information and formed
The coded data of " 0111 ", the coded data form modulated signal by the modulation of the F115 transmitting chips U5 again, the adjustment
Signal is sent eventually through transmitting antenna T2 with 433MHz electromagnetic wave.
Now, superheterodyne reception module a2 reception antenna T1 receives 433MHz electromagnetic wave, and the electromagnetic wave passes through
Two matching network a21 form electric signal and are sent in the SYN520R reception chips U2, the SYN520R reception chips U2
The electric signal is demodulated to obtain demodulating data, the demodulating data passes through the demodulation number of the SYN520R reception chips U2 again
Exported according to output end D0, because the learning-oriented decoding chip U1 of the TCT6227 the 6th I/O mouths 7 are configured to scan pattern, due to
6th I/O mouths 7 receive the demodulating data by the scanning to the demodulating data output end D0, and the demodulating data passes through
Decoding algorithm built in the learning-oriented decoding chip U1 of TCT6227, obtain coded data " 0111 ", the learning-oriented solutions of TCT6227
Code chip U1 inquires about in the 24C02N storage chips U3 coded data stored by the 4th I/O mouths 5, the 5th I/O mouths 6
" 0111 ", when both are identical, the 13 pins output low level of the learning-oriented decoding chip U1 of TCT6227, the positive steering
FWD responses are held, so as to realize positive steering operation.As optimization, gone here and there in the serial clock pin SCL of the 24C02N storage chips
Connecting resistance and the first indicator lamp LED1, the positive pole of the first indicator lamp LED1 pass through resistance and the serial clock pin SCL
Concatenation, the negative pole of the first indicator lamp LED1 connects over the ground, because the learning-oriented decoding chip U1 of the TCT6227 are in inquiry
During, it is necessary to operated using serial clock pin SCL to the 24C02N storage chips U3, therefore, set first to refer to
Show that lamp LED1 can show the operation in the form of light, facilitate research staff to debug.
As for reverse operating, speed governing operation, because signal stream is similar to the signal stream of positive operation, just no longer introduce here
.
As optimization, the second matching network a21 is by first, second electric capacity C1, C2, first, second inductance L1, L2 structure
Into, the first inductance L1 respectively with the second inductance L2, the first electric capacity C1 and connecing, the first inductance L1 and described second
The second electric capacity C2, SYN520R reception chips U2 reception antenna RF signal input parts ANT is concatenated between inductance L2 by
Two electric capacity C2 concatenate with the reception antenna T1.Wherein, the length of the reception antenna T1 is 167mm, first, second electricity
The capacitance for holding C1, C2 is respectively 6.8pF, 1.8pF, and described first, second inductance L1, L2 inductance value are respectively 39nH, 56nH.Examination
Issue after examination and approval now, first, second electric capacity C1, C2, first, second inductance L1, L2, reception antenna T1 use said structure and above-mentioned ginseng
Number, there is 50 ohm of matching impedance, improve reception antenna T1 efficiency.
As optimization, the first matching network a4 is made up of the four, the 5th electric capacity C4, C5, the 3rd inductance L3, and described
Four electric capacity C4 concatenate with the 3rd inductance L3, one end of the 5th electric capacity C5 respectively with the 3rd inductance L3, transmitting day
Line T2 connections, the data output pins PAOUT of the F115 transmitting chips U5 by the 4th electric capacity C4, the 3rd inductance L3 with
The transmitting antenna T2 connections.The length of the transmitting antenna T2 is 167mm, and described four, the 5th electric capacity C4, C5 capacitance are divided
It is not：10pF and 5pF, the 3rd inductance L3 inductance value are 56nH.Experiment discovery, the four, the 5th electric capacity C4, C5, the 3rd electricity
Sense L3, transmitting antenna T2 use said structure and above-mentioned parameter, the matching impedance with 50 ohm, improve transmitting antenna T2 effect
Rate.
The better embodiment of the present invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent modifications on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (7)
1. a kind of wireless control system of frequency converter, including frequency converter, the frequency converter are provided with：It is positive to turn to end, counter steer end, 5V
Power output end, common port, speed adjustment end, the common port connect over the ground, it is characterised in that also include：Remote control, control
Box, the remote control include：Button, EV1527 coding chips, F115 transmitting chips, transmitting antenna, the button with it is described
The key-press input pin connection of EV1527 coding chips, Serial output pin and the F115 transmitting cores of the EV1527 coding chips
The data input pin connection of piece, the data output pins of the F115 transmitting chips pass through the first matching network and the transmitting day
Line connects, and the control box includes：5 connecting lines, superheterodyne reception module, decoding circuit, the superheterodyne reception module bag
Include：Reception antenna, SYN520R reception chips, the reception antenna pass through the second matching network and the SYN520R reception chips
The connection of reception antenna RF signal input parts, the decoding circuit includes：The learning-oriented decoding chips of TCT6227,24C02N storages
Chip, the learning-oriented decoding chips of TCT6227 are connected by I2C bus protocols with the 24C02N storage chips, described
The power end of the learning-oriented decoding chips of TCT6227 is connected by the first connecting line with the 5V power output ends, the TCT6227
The earth terminal of learning-oriented decoding chip is connected by the 3rd connecting line with the common port, the learning-oriented decoding cores of TCT6227
First, second, third I/O mouths of piece respectively by the five, the four, the second connecting lines and the counter steer end, just turning to end, speed
Spend adjustment end connection, the transmitting antenna and the reception antenna wireless connection.
A kind of 2. wireless control system of frequency converter according to claim 1, it is characterised in that：Second matching network
Be made up of first, second electric capacity, first, second inductance, first inductance respectively with second inductance, the first electric capacity simultaneously
Connect, the second electric capacity, the reception antenna RF of the SYN520R reception chips are concatenated between first inductance and second inductance
Signal input part is concatenated by the second electric capacity with the reception antenna.
A kind of 3. wireless control system of frequency converter according to claim 2, it is characterised in that：The length of the reception antenna
Spend for 167mm, the capacitance of first, second electric capacity is respectively 6.8pF, 1.8pF, the inductance value of first, second inductance
Respectively 39nH, 56nH.
A kind of 4. wireless control system of frequency converter according to claim 1, it is characterised in that：First matching network
It is made up of the four, the 5th electric capacity, the 3rd inductance, the 4th electric capacity concatenates with the 3rd inductance, described 5th electric capacity one end
It is connected respectively with the 3rd inductance, transmitting antenna, the data output pins of the F115 transmitting chips pass through the described 4th electricity
Hold, the 3rd inductance is connected with the transmitting antenna.
A kind of 5. wireless control system of frequency converter according to claim 4, it is characterised in that：The length of the transmitting antenna
Spend and be respectively for 167mm, the capacitance of the four, the 5th electric capacity：10pF and 5pF, the inductance value of the 3rd inductance is 56nH.
A kind of 6. wireless control system of frequency converter according to claim 1, it is characterised in that：The decoding circuit is provided with
First indicator lamp, the positive pole of first indicator lamp are connected by resistance and the serial clock pin of the 24C02N storage chips
Connect, the negative pole of the indicator lamp connects over the ground.
A kind of 7. wireless control system of frequency converter according to claim 1, it is characterised in that：The remote control also includes
Second indicator lamp, the positive pole of second indicator lamp are connected by resistance with the Serial output pin of the EV1527 coding chips,
The negative pole of second indicator lamp connects over the ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710780852.0A CN107845245A (en) | 2017-09-01 | 2017-09-01 | A kind of wireless control system of frequency converter |
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| CN201710780852.0A CN107845245A (en) | 2017-09-01 | 2017-09-01 | A kind of wireless control system of frequency converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039163A (en) * | 2018-08-03 | 2018-12-18 | 东莞市杰美电器有限公司 | Electric machine control system and motor driver with distant control function |
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