CN107040277A - A kind of PLC wireless debugging devices - Google Patents
A kind of PLC wireless debugging devices Download PDFInfo
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- CN107040277A CN107040277A CN201710183287.XA CN201710183287A CN107040277A CN 107040277 A CN107040277 A CN 107040277A CN 201710183287 A CN201710183287 A CN 201710183287A CN 107040277 A CN107040277 A CN 107040277A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
A kind of PLC wireless debugging devices, including PLC processor, debugging host computer, the first RF transceiver and the second RF transceiver, first RF transceiver and the second RF transceiver are connected with debugging host computer and PLC processor respectively；First RF transceiver and the second RF transceiver include controller, tunable oscillator, frequency mixer, envelope detector and dual-mode antenna, the controller is connected with frequency mixer and tunable oscillator respectively, the tunable oscillator is connected with frequency mixer, the dual-mode antenna is connected with frequency mixer and envelope detector respectively, and the envelope detector is connected with controller.Wireless debugging device of the present invention realizes the communication connection of debugging host computer and PLC processor using RF transceiver, the original technological means that communication connection is realized using router of substitution, communication connection sets simple, simplify the structure of whole debugging apparatus, reduction communication connection loss power, it is ensured that debugging communication quality.
Description
Technical field
The present invention relates to a kind of long distance wireless debugging apparatus being applicable with PLC processor.
Background technology
With the offer of modern automatic technology level, present large-scale manufacturing appliance arrangement has all been configured
The electronic system of automated production can be realized by having gone up, wherein most electronic systems are using PLC processor as core.And conduct
An essential link during design system is exactly to carry out the debugging of system program.
It is known that conventional adjustment method is all to use wired on-line debugging method, i.e., will be to be debugged using data wire
Equipment and computer carry out data cube computation, and this connected mode is using more, but once to arrive in system program design at initial stage
In the debugging stage of the enterprising line program of equipment, wired debugging just seems very inconvenient, and this is due to that device to be debugged is set
Standby is typically all to be placed in workshop, and production environment is complicated in workshop, if using wired connection in such a case, debugs
Journey just seems completely inconvenient.
Exist in the prior art for case above by the use of wireless router and be used as bottom PLC processor and debugging host computer
Communication connection medium, but router sets more difficult cumbersome in reality, and setup cost is higher, and system architecture is complicated.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of suitable for PLC processor, the wireless tune of technology for radio frequency is utilized
Trial assembly is put.
The present invention solve its technical problem solution be：
A kind of PLC wireless debugging devices, including PLC processor and debugging host computer, also include the first RF transceiver and
Second RF transceiver, first RF transceiver and the second RF transceiver are respectively with debugging host computer and PLC processing
Device is connected；First RF transceiver and the second RF transceiver include controller, tunable oscillator, frequency mixer, envelope
Wave detector and dual-mode antenna, the controller output end respectively with mixer input and tunable oscillator input phase
Even, the tunable oscillator output end is connected with mixer input, the dual-mode antenna respectively with mixer output and
Envelope detector input is connected, and the envelope detector output end is connected with controller input, first radio-frequency receiving-transmitting
Device controller and debugging host computer two-way communication link, the second RF transceiver controller and PLC processor two-way communication
Connection.
As the further improvement of above-mentioned technical proposal, the tunable oscillator includes triode, the first electric capacity, the second electricity
Hold, the 3rd electric capacity and inductance, first electric capacity is connected between transistor collector and ground, and first electric capacity is with connecting
Inductance and the second electric capacity are in parallel, and the transistor base is connected between inductance and the second electric capacity by the 3rd electric capacity；Described first
Electric capacity and/or the second electric capacity are programmable capacitors, the programmable capacitor model MAX1474, first electric capacity and/
Or second electric capacity be connected with controller output end.
As the further improvement of above-mentioned technical proposal, the envelope detector includes the first diode, the 4th electric capacity, the
Five electric capacity, first resistor and second resistance, first diode are connected with envelope detector input, the 4th electric capacity
Two ends are connected on the first diode cathode and ground respectively, and the first resistor is in parallel with the 4th electric capacity, and the first resistor is with connecting
The 5th electric capacity and second resistance it is in parallel.
As the further improvement of above-mentioned technical proposal, the frequency mixer includes analog multiplier chip, and the simulation multiplies
Musical instruments used in a Buddhist or Taoist mass chip model is BG314, and the output end of oscillating circuit is connected on analog multiplier chip respectively with controller output end
Input, the analog multiplier output end is connected with dual-mode antenna.
The beneficial effects of the invention are as follows：Wireless debugging device of the present invention using RF transceiver realize debugging host computer and
The communication connection of PLC processor, the original technological means that communication connection is realized using router of substitution, communication connection sets letter
It is single, simplify the structure of whole debugging apparatus, reduction communication connection loss power, it is ensured that debugging communication quality.
A kind of adjustment method of wireless debugging device, comprises the following steps：
Step A：Initial parameter, including mailing address, communication frequency and signal power are set；
Step B：The information code that first RF transceiver controller is transmitted according to debugging host computer sets check code, described information code
With check code composition debugging signal；
Step C：First RF transceiver frequency mixer exchanges trial signal and is modulated and is sent by dual-mode antenna；
Step D：Second RF transceiver envelope detector is demodulated to the debugging signal received；
Step E：Second RF transceiver controller judges whether the information code received and check code meet setting principle, if
Meet, information code is transferred to PLC processor by controller, if do not met, the second RF transceiver, which is sent, feeds back signal to the
One RF transceiver, the first RF transceiver is received after feedback signal, resends debugging signal.
As the further improvement of above-mentioned technical proposal, described information code is setting check code rule in 8 data, step B
Then comprise the following steps：
Step B01：Information code is moved to left one, in lowest order zero padding, new information code is obtained；
Step B02：New and old information code is carried out and computing；
Step B03：The digit of numeral 1 in calculation procedure B02 operation results；
Step B04：Digit is converted into binary system, check code is obtained.
The beneficial effect of this adjustment method is：The present invention according to information code by setting check code, and effectively reduction communicated
The bit error rate in journey, improves the communication quality in debugging process.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described.Obviously, described accompanying drawing is a part of 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 circuit theory frame diagram of the present invention；
Fig. 2 is the circuit theory diagrams of tunable oscillator of the present invention；
Fig. 3 is the circuit theory diagrams of envelope detector of the present invention；
Fig. 4 is the flow chart of the specific embodiment of adjustment method of the present invention.
Embodiment
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing clear
Chu, complete description, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of 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 constitute more excellent draw bail.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
1~Fig. 3 of reference picture, for being communicated in the prior art with a router as debugging host computer and PLC processor
The technical scheme for connecting equipment is excessively complicated, communications setting excessively cumbersome technical problem, the invention provide a kind of PLC without
Line debugging apparatus, the debugging apparatus includes PLC processor and debugging host computer, also includes the first RF transceiver and the
Two RF transceivers, first RF transceiver and the second RF transceiver are respectively with debugging host computer and PLC processor
It is connected；First RF transceiver and the second RF transceiver include controller, tunable oscillator, frequency mixer, envelope inspection
Ripple device and dual-mode antenna, the controller output end are connected with mixer input and tunable oscillator input respectively,
The tunable oscillator output end is connected with mixer input, the dual-mode antenna respectively with mixer output and envelope
Wave detector input is connected, and the envelope detector output end is connected with controller input, the first RF transceiver control
Device processed and debugging host computer two-way communication link, the second RF transceiver controller and PLC processor two-way communication link,
Both first RF transceiver and the second RF transceiver internal structure were consistent, and simply the first RF transceiver is debugged
PC control, the second RF transceiver is by PLC processor control.The invention is upper by the use of RF transceiver as debugging
Machine and the equipment of communication connection of the PLC processor in debugging process, instead of in the prior art with a router as communication
The technological means of equipment, simplifies whole debugging apparatus, and RF transceiver sets simple, without leading to as router
Various cumbersome settings are carried out before letter, are easy to staff to use.The invention concrete operating principle is as follows：Debugging is upper
Debugging is sent to the first RF transceiver with information code by machine, and the first RF transceiver controller is according to information code according to setting
Algorithm adds check code, described information code and check code composition debugging signal, the tune that the debugging signal is exported with oscillator
Signal processed simultaneously be input in frequency mixer carry out signal modulation, after launch through dual-mode antenna, PLC processor end second
RF transceiver dual-mode antenna receives the debugging signal for obtaining base band after coherent signal through envelope detector, the second radio-frequency receiving-transmitting
Device controller judge information code and check code whether according to regulation algorithm in correspondence with each other, if it is, the second RF transceiver control
Information code is transferred to PLC processor by device processed, and PLC processor makes debugging operations according to the information code.
As further preferred embodiment, tunable oscillator is used for the modulation for generating certain frequency in the invention
Signal, tunable oscillator described in present embodiment is capacitance connecting three point type oscillator, and reference picture 2, tunable oscillator includes three poles
Pipe, the first electric capacity, the second electric capacity, the 3rd electric capacity and inductance, first electric capacity are connected between transistor collector and ground, institute
State the first electric capacity and the inductance connected and the second electric capacity are in parallel, the transistor base is connected on inductance and second by the 3rd electric capacity
Between electric capacity；First electric capacity and/or the second electric capacity are programmable capacitors, the programmable capacitor model
MAX1474, first electric capacity and/or the second electric capacity are connected with controller output end.Wherein the first electric capacity, the second electric capacity and
Inductance collectively forms frequency-selective network, changes the value of one element of any of which, can realize the change of frequency modulating signal, therefore
First electric capacity described in present embodiment and/or the second electric capacity use a kind of programmable capacitor, the programmable capacitor type
Number be MAX1474, first electric capacity and the second electric capacity are connected with the output end of controller respectively.
It is further used as preferred embodiment, envelope detector described in the invention is used for the modulation to receiving
Signal is demodulated operation, envelope detector described in present embodiment include the first diode, the 4th electric capacity, the 5th electric capacity,
First resistor and second resistance, first diode are connected with envelope detector input, the 4th electric capacity two ends point
Be not connected on the first diode cathode and ground, the first resistor is in parallel with the 4th electric capacity, the first resistor with connect the 5th
Electric capacity and second resistance are in parallel.The dc component that wherein described 5th electric capacity is used in isolation circuit, and the 4th electric capacity is used to filter
Except the high-frequency components in circuit, pass through the baseband signal of low frequency, principle is as follows：The modulated signal of high frequency is after filtering and blocking
After act in second resistance, and the voltage of second resistance simultaneously reaction in the negative pole of diode, make in second resistance
Pressure drop show slow change, the waveform of modulated signal is sketched the contours of, the baseband signal of low frequency is obtained.
It is further used as preferred embodiment, the frequency mixer is used for baseband signal and the oscillator for transmitting controller
The high-frequency carrier signal of output carries out multiplying, obtains carrying the high-frequency modulation signal of information data, described in the present embodiment
Frequency mixer includes analog multiplier chip, and the analog multiplier chip model is BG314, the output end of oscillating circuit and control
Device output end processed is connected on the input of analog multiplier chip respectively, and the analog multiplier output end is connected with dual-mode antenna,
The analog multiplier chip integration is high, and the required component in periphery is few, effectively simplifies circuit structure.
Reference picture 4, the invention also discloses a kind of unlimited adjustment methods of PLC, and this method needs to utilize above-mentioned debugging
Device can be just achieved.The adjustment method comprises the following steps：
Step A：Initial parameter, including mailing address, communication frequency and signal power are set；
Step B：The information code that first RF transceiver controller is transmitted according to debugging host computer sets check code, described information code
With check code composition debugging signal；
Step C：First RF transceiver frequency mixer exchanges trial signal and is modulated and is sent by dual-mode antenna；
Step D：Second RF transceiver envelope detector is demodulated to the debugging signal received；
Step E：Second RF transceiver controller judges whether the information code received and check code meet setting principle, if
Meet, information code is transferred to PLC processor by controller, if do not met, the second RF transceiver, which is sent, feeds back signal to the
One RF transceiver, the first RF transceiver is received after feedback signal, resends debugging signal.
Specifically, step A is to set the operational factor before debugging, mainly including mailing address, communication frequency and signal
Power, due to usually requiring to debug multiple PLC processors in practical application, therefore sets each PLC processor to be connected
The second RF transceiver mailing address, and set current debugging host computer to need the PLC processor debugged communicatedly
Location, makes the PLC processing connection corresponding with the mailing address of debugging host computer, and communication frequency is mainly used in setting debugging host computer
With the communication channel of PLC processor, only when PLC processor communication frequency corresponding with debugging host computer is identical, it could realize
Communication connection, signal power refers to the power of dual-mode antenna transmitting debugging signal, can be configured according to site environment, work as tune
When trying host computer and distant PLC processor, it is possible to increase signal power, it is ensured that communication quality, communication bit error rates are reduced；Step
The modulation and demodulation process of debugging signal transmission when B to step D is debugging, described information code is 8, school in the present embodiment in addition
It is 3 to test code；And step E is then a feedback mechanism, when the second RF transceiver controller detects information code and check code
When not meeting corresponding setting rule, the second RF transceiver sends and feeds back signal to the first RF transceiver, informs in debugging
Position machine resends the debugging signal.Adjustment method Principle of Communication of the present invention is simple, can realize one-to-many debugging mode, together
When check code is set in communication process, effectively reduce communication bit error rates, it is ensured that communication quality.
It is further used as preferred embodiment, the setting rule of check code is as follows in this adjustment method step B：
Step B01：Information code is moved to left one, in lowest order zero padding, new information code is obtained；
Step B02：New and old information code is carried out and computing；
Step B03：The digit of numeral 1 in calculation procedure B02 operation results；
Step B04：Digit is converted into binary system, check code is obtained.
Check code method to set up step described in the present embodiment is simple, it is easy to accomplish, while being capable of detecting when more
For example error condition, be explained herein：Such as information code is " 01011101 ", after being handled through above-mentioned steps, is obtained
Check code be " 010 ", through mathematical reasoning, when the digit for occurring " 1 " in 8 information codes is less than or equal to 2 or can more than or equal to 6
It is enough all to detect, when occurring the digit of " 1 " in information code equal to 3 or equal to 4, only concentrate in together and just examine when 31
Do not detect, when the digit that " 1 " occurs in information code is equal to 5, when 2 or more " 0 " are concentrated in together, can be detected；Again
If information code is " 00100000 ", after being handled through above-mentioned steps, obtained check code is " 000 ", and any adjacent two are all " 1 "
Information can be detected.Compared with other set-up modes such as traditional parity check code, there is the situation of error code
Greatly reduce.
Further, the debugging host computer is except can externally provide debugging operations option, in addition it is also necessary to can externally show
The internal processes operation conditions of current PLC processor, therefore also include step F after the step E, PLC processor is to debugging
Host computer return communication address and the value of each internal register.
Reference picture 4, one of specific embodiment of adjustment method of the present invention, including step in detail below：
Step S01：Mailing address, communication frequency and signal power are set；
Step S02：Information code is sent to the first RF transceiver by debugging host computer；
Step S03：Information code is moved to left one, in lowest order zero padding, new information code is obtained；
Step S04：New and old information code is carried out and computing；
Step S05：The digit of numeral 1 in calculation procedure S04 operation results；
Step S06：Digit is converted into binary system, check code is obtained, the prime information code is combined into debugging letter with check code
Number；
Step S07：First RF transceiver frequency mixer will debug signal and be modulated and be launched by dual-mode antenna；
Step S08：Second RF transceiver envelope detector is demodulated to the debugging signal received；
Step S09：Second RF transceiver controller judges whether the debugging signal and check code that receive meet rule, if
Be, the second RF transceiver will debug signal in information code be transferred to PLC processor, if it is not, the second RF transceiver to
First RF transceiver sends feedback signal, it is desirable to retransmit；
Step S10：PLC processor is to debugging host computer return communication address and the value of each internal register.
The better embodiment to 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 or replace on the premise of without prejudice to spirit of the invention
Change, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (6)
1. a kind of PLC wireless debugging devices, including PLC processor and debugging host computer, it is characterised in that：Also include first
RF transceiver and the second RF transceiver, first RF transceiver and the second RF transceiver are respectively with debugging host computer
And PLC processor is connected；First RF transceiver and the second RF transceiver include controller, tunable oscillator,
Frequency mixer, envelope detector and dual-mode antenna, the controller output end respectively with mixer input and adjustable vibration
Device input be connected, the tunable oscillator output end is connected with mixer input, the dual-mode antenna respectively with frequency mixer
Output end and envelope detector input are connected, and the envelope detector output end is connected with controller input, and described the
One RF transceiver controller and debugging host computer two-way communication link, the second RF transceiver controller and PLC processing
Device two-way communication link.
2. PLC wireless debugging devices according to claim 1, it is characterised in that：The tunable oscillator include triode,
First electric capacity, the second electric capacity, the 3rd electric capacity and inductance, first electric capacity are connected between transistor collector and ground, described
First electric capacity and the inductance connected and the second electric capacity are in parallel, and the transistor base is connected on inductance and the second electricity by the 3rd electric capacity
Between appearance；First electric capacity and/or the second electric capacity are programmable capacitors, the programmable capacitor model MAX1474,
First electric capacity and/or the second electric capacity are connected with controller output end.
3. PLC wireless debugging devices according to claim 2, it is characterised in that：The envelope detector includes the one or two
Pole pipe, the 4th electric capacity, the 5th electric capacity, first resistor and second resistance, first diode and envelope detector input
It is connected, the 4th electric capacity two ends are connected on the first diode cathode and ground respectively, and the first resistor is in parallel with the 4th electric capacity, institute
It is in parallel with the 5th electric capacity and second resistance connected to state first resistor.
4. PLC wireless debugging devices according to claim 3, it is characterised in that：The frequency mixer includes analog multiplier
Chip, the analog multiplier chip model is BG314, and the output end of oscillating circuit is connected on mould respectively with controller output end
The input of quasi-multiplication device chip, the analog multiplier output end is connected with dual-mode antenna.
5. the adjustment method of the unlimited debugging apparatus of PLC described in a kind of claim 4, it is characterised in that comprise the following steps：
Step A：Initial parameter, including mailing address, communication frequency and signal power are set；
Step B：The information code that first RF transceiver controller is transmitted according to debugging host computer sets check code, described information code
With check code composition debugging signal；
Step C：First RF transceiver frequency mixer exchanges trial signal and is modulated and is sent by dual-mode antenna；
Step D：Second RF transceiver envelope detector is demodulated to the debugging signal received；
Step E：Second RF transceiver controller judges whether the information code received and check code meet setting principle, if
Meet, information code is transferred to PLC processor by controller, if do not met, the second RF transceiver, which is sent, feeds back signal to the
One RF transceiver, the first RF transceiver is received after feedback signal, resends debugging signal.
6. adjustment method according to claim 5, it is characterised in that：Check code rule is set to include following step in step B
Suddenly：
Step B01：Information code is moved to left one, in lowest order zero padding, new information code is obtained；
Step B02：New and old information code is carried out and computing；
Step B03：The digit of numeral 1 in calculation procedure B02 operation results；
Step B04：Digit is converted into binary system, check code is obtained.
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| CN201710183287.XA CN107040277A (en) | 2017-03-24 | 2017-03-24 | A kind of PLC wireless debugging devices |
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| CN201710183287.XA CN107040277A (en) | 2017-03-24 | 2017-03-24 | A kind of PLC wireless debugging devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123824A (en) * | 2019-12-19 | 2020-05-08 | 深圳华侨城文化旅游科技集团有限公司 | PLC debugging system and debugging method |
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| CN103778459A (en) * | 2012-10-22 | 2014-05-07 | 西安交大京盛科技发展有限公司 | Radio frequency identification card based on envelope detection |
| CN104682872A (en) * | 2015-03-09 | 2015-06-03 | 青岛歌尔声学科技有限公司 | High-frequency oscillator |
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| CN2250278Y (en) * | 1996-01-29 | 1997-03-26 | 刘建平 | Wireless transmission alarm device for tyre air leakage |
| CN201473132U (en) * | 2009-04-28 | 2010-05-19 | 厦门汉京自动化科技有限公司 | Elevator debugging device based on radio |
| CN201491008U (en) * | 2009-09-07 | 2010-05-26 | 浙江大学城市学院 | Wireless debugging device of micro robot |
| CN103778459A (en) * | 2012-10-22 | 2014-05-07 | 西安交大京盛科技发展有限公司 | Radio frequency identification card based on envelope detection |
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