CN205754256U - A kind of foundry holding wire noise trap - Google Patents
A kind of foundry holding wire noise trap Download PDFInfo
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- CN205754256U CN205754256U CN201620577698.8U CN201620577698U CN205754256U CN 205754256 U CN205754256 U CN 205754256U CN 201620577698 U CN201620577698 U CN 201620577698U CN 205754256 U CN205754256 U CN 205754256U
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Abstract
The utility model discloses a kind of foundry holding wire noise trap, including detector unit, in order to the amplitude size of signal in signal lines and export an amplitude detection signal, if it exceedes preset value, then output one triggering signal；Signal transmission unit, including wired signal transmission module and wireless signal transmission module, during original state, wire signal transport module and wireless signal transmission module one of them communicate to connect with signal source, receive and transmit signal；Switch unit, including at least one electric-controlled switch element, in response to triggering signal, selectivity Continuity signal source and wire signal transport module or wireless signal transmission module, compared with prior art, this utility model is by combining wire signal transmission means with transmission of wireless signals mode, when one way in which occurs abnormal, change transmission means in time, it is ensured that the stability of signal transmission and seriality so that the signal transmission in foundry is more stable.
Description
Technical field
This utility model relates to signal Anti-Jamming Technique field, more specifically, it relates to a kind of foundry signal
Line noise trap.
Background technology
In foundry, generally require and the liquid steel temperature in smelting furnace is detected, in order to clearly illustrate molten steel
Temperature, usually installs temperature display in foundry and shows the temperature of molten steel in real time.Due to electricity in foundry
Magnetic environment is complicated, and containing many charged metal dust in air, easily transmits signal in holding wire and produce bigger shadow
Ring, cause temperature display cannot demonstrate temperature normally, even lose temperature signal.To this end, existing solution
Being coated with layer of metal net often on the outer wall of holding wire, the project that signal is easily produced interference by electrostatic etc. is shielded
Cover.But, from the point of view of the effect of reality application, list improves also insufficient for holding wire from the structure of holding wire itself
Signal transmission is not affected by electromagnetic radiation, accordingly, it would be desirable to improve existing signal transmitting apparatus.
Utility model content
The problem being vulnerable to interference for foundry in practice with the transmission of holding wire restricting the number, the utility model proposes
A kind of foundry holding wire noise trap, concrete scheme is as follows:
A kind of foundry holding wire noise trap, including:
Detector unit, in order to the amplitude size of signal in signal lines and export an amplitude detection signal, if it exceedes
Preset value, then output one triggering signal；
Signal transmission unit, including wired signal transmission module and wireless signal transmission module, during original state, wired
Signal transmission module and wireless signal transmission module one of them communicate to connect with signal source, receive and transmit signal；
Switch unit, including at least one electric-controlled switch element, in response to described triggering signal, selectivity Continuity signal source
With wire signal transport module or wireless signal transmission module.
Owing to the temperature display in foundry is in the state worked always, therefore, at the signal in holding wire
When normal condition, the signal voltage in holding wire should be maintained within the scope of certain, is interfered when signal and interrupts
Or when increasing suddenly, detector unit will detect that above-mentioned change, and the mode that at this moment signal is just transmitted by switch unit is by having
The transmission means of line switches to wirelessly to be transmitted, or contrary with said process.Ensure that quality and company that signal transmits
Continuous property, the interference free performance of promotion signal line.
Further, described detector unit includes:
Voltage sensor, electrically connects with described holding wire, in order to the amplitude size of signal in signal lines and export institute
State amplitude detection signal；
Upper limit module, including first liang of input comparator, its positive and negative input is respectively coupled to described detector unit
Amplitude detection signal, and one first reference voltage signal, export a upper limit comparison signal；
Lower limit module, including second liang of input comparator, its positive and negative input is respectively coupled to one second reference voltage
Signal, and the amplitude detection signal of described detector unit, export a lower limit comparison signal；
Scope determination module, including one or two input or door, its signal input part is respectively coupled to described upper limit and compares letter
Number with lower limit comparison signal, export described triggering signal.
By technique scheme, voltage sensor can detect the amplitude size of the signal voltage in holding wire, and
And output is to upper limit module and lower limit module, once the amplitude range of signal exceedes the most spacing predetermined value, then first
Two input comparators or second liang of input comparator will export a high level, by arranging or door, when first liang of input is compared
Device, second liang of input comparator wherein have an output high level, then can be determined that out abnormal signal over range, then output is described
Trigger signal.
Further, described wireless signal transmission module includes: WIFI wireless signal transmission module or GPRS communication module
Or bluetooth communication.
Pass through technique scheme so that stablizing of the signal transmission variation in foundry, beneficially signal transmission
Property.
Further, described switch unit includes:
One metal-oxide-semiconductor, the grid of described metal-oxide-semiconductor is coupled to described triggering signal, and its source electrode is coupled to signal source, and drain electrode couples
In described wireless signal transmission module or the signal input part of wire signal transport module；
One diode, its negative pole is coupled between described signal source and metal-oxide-semiconductor, and positive pole is coupled to the transmission of described wire signal
Module or the signal input part of wireless signal transmission module.
By technique scheme, when signal voltage is in normal condition, metal-oxide-semiconductor is in the conduction state, once signal
Occurring abnormal, trigger signal and drive MOS to block, now the voltage of signal source is all loaded onto the two ends of metal-oxide-semiconductor or diode, only
Will the conducting voltage of now diode reasonable, then will be reversed and puncture so that signal is through another transmission means of diode selecting
It is transmitted, thus becomes and ensure that the seriality that signal transmits, it is to avoid temperature display shows mistake due to the interference of signal.
Further, described switch unit includes:
One not gate, its signal input part is coupled to described triggering signal；
One first metal-oxide-semiconductor, the grid of described first metal-oxide-semiconductor is coupled to the signal output part of described not gate, a described MOS
The source electrode of pipe is coupled to signal source, and the signal that drain electrode is coupled to described wireless signal transmission module or wire signal transport module is defeated
Enter end；
One second metal-oxide-semiconductor, the grid of described second metal-oxide-semiconductor is coupled to described triggering signal, and its source electrode is coupled to described letter
Number source, drain electrode is coupled to described wire signal transport module or the signal input part of wireless signal transmission module.
By technique scheme, when signal voltage is in normal condition, triggers signal and do not export, at the first metal-oxide-semiconductor
In conducting state, now signal is transmitted by the mode of wire transmission, and when signal transmission occurs abnormal, triggers signal defeated
Go out, turn on the second metal-oxide-semiconductor, so that signal behavior another way is transmitted, it is ensured that the stability of signal transmission and company
Continuous property.
Further, it is provided with an electric capacity between described second metal-oxide-semiconductor and the triggering signal output part of described detector unit.
Due to metal-oxide-semiconductor response speed quickly, and the output of not gate is relatively slow comparatively speaking, thus there will be in the short time
The possibility of two signal line simultaneous transmission of signals, in order to offset the delay effect of not gate self, arranges electricity before the second metal-oxide-semiconductor
Holding, the equivalent capacity of the size NAND gate of electric capacity self is suitable, it is possible to ensures that signal synchronization is only transmitted by a kind of mode, keeps away
Exempt to interfere.
Further, after the signal output part of described scope determination module, it is additionally provided with delay confirmation module, including:
One delay circuit, receives described triggering signal, exports a triggering signal to be confirmed after delay predetermined time；
One or two input and door, its signal input part is respectively coupled to described triggering signal to be confirmed and triggers signal, output
One confirms to trigger signal.
By arranging delay confirmation circuit, that can effectively get rid of that the signal voltage saltus step in the short time brought is dry
Disturbing, when only the exception of long period occurs in signal voltage, just output triggers signal.
Further, described detector unit also includes:
One reference voltage generation module, including multiple resistance being arranged in series, described first reference voltage and the second benchmark
Voltage is picked out by between adjacent two resistance.
Further, described first metal-oxide-semiconductor and the second metal-oxide-semiconductor are NMOS tube.
Compared with prior art, this utility model is by tying wire signal transmission means mutually with transmission of wireless signals mode
Conjunction, when one way in which occurs abnormal, changes transmission means in time, it is ensured that the stability of signal transmission is with continuous
Property so that the signal transmission in foundry is more stable.
Accompanying drawing explanation
Fig. 1 is general frame schematic diagram of the present utility model；
Fig. 2 is the overall schematic of this utility model embodiment one；
Fig. 3 is the overall schematic of this utility model embodiment two.
Accompanying drawing mark: 1, detector unit；2, signal transmission unit；3, switch unit；11, voltage sensor；12, upper limit
Module；13, lower limit module；14, scope determination module；21, wire signal transport module；22, wireless signal transmission module；4、
Delay confirmation module；15, reference voltage generation module；5, temperature display；6, wireless thermodetector；7, monitor terminal.
Detailed description of the invention
The problem that this utility model is vulnerable to interference for foundry with the transmission of holding wire restricting the number, it is proposed that a kind of casting
Workshop holding wire noise trap.
Below in conjunction with embodiment and figure, the utility model is described in further detail, but embodiment party of the present utility model
Formula is not limited only to this.
Embodiment one: as depicted in figs. 1 and 2, a kind of foundry holding wire noise trap, including:
Detector unit 1, in order to the amplitude size of signal in signal lines and export an amplitude detection signal, if it exceedes
Preset value, then output one triggering signal；
Signal transmission unit 2, including wired signal transmission module 21 and wireless signal transmission module 22, original state
Time, wire signal transport module 21 and wireless signal transmission module 22 one of them communicate to connect with signal source, receive and transmit
Signal；
Switch unit 3, including at least one electric-controlled switch element, in response to triggering signal, selectivity Continuity signal source with
Wire signal transport module 21 or wireless signal transmission module 22.
In such scheme, the detecting element of detector unit 1 uses voltage sensor 11, voltage sensor 11 and holding wire electricity
Connect, detect signal in order to amplitude size the output amplitude of signal in signal lines.Detector unit 1 also includes:
Upper limit module 12, including first liang of input comparator A1, its positive and negative input is respectively coupled to detector unit 1
Amplitude detection signal, and one first reference voltage signal, export a upper limit comparison signal；
Lower limit module 13, including second liang of input comparator A2, its positive and negative input is respectively coupled to one second benchmark
Voltage signal, and the amplitude detection signal of detector unit 1, export a lower limit comparison signal；
Scope determination module 14, including one or two input or door OR, its signal input part is respectively coupled to upper limit and compares letter
Number with lower limit comparison signal, output trigger signal.
In above-mentioned detector unit 1, voltage sensor 11 can detect the amplitude size of the signal voltage in holding wire, and
And output is to upper limit module 12 and lower limit module 13, once the amplitude range of signal exceedes the most spacing predetermined value, then
First liang of input comparator A1 or second liang of input comparator A2 will export a high level, by arranging or door OR, when first
Two input comparator A1, second liang of input comparator A2 wherein have an output high level, then can be determined that out that abnormal signal surpasses
Scope, then output triggers signal.
In the present embodiment, for the first reference voltage signal and the second reference voltage signal, can directly be carried by program control
Supplying, it is also possible to provided by hardware circuit dividing potential drop, preferably hardware dividing potential drop provides.Preferably, detector unit 1 also includes: a benchmark
Voltage generation module 15, including multiple resistance being arranged in series, the first reference voltage and the second reference voltage by adjacent two electricity
Pick out between resistance.It is the most simpler that the method compares to the method for program control offer, principle and realization, and work is the most stable.
Being described in further detail, wireless signal transmission module 22 includes: WIFI wireless signal transmission module 22 or GPRS communicates
Module or bluetooth communication.In technique scheme, can believe according to receiving terminal is selected with the distance of foundry's collection terminal
Number transmission means so that in foundry signal transmission variation, beneficially signal transmission stability.
Describing in detail, switch unit 3 includes:
One metal-oxide-semiconductor Q, the grid of metal-oxide-semiconductor Q is coupled to trigger signal, and its source electrode is coupled to signal source, and drain electrode is coupled to wireless
Signal transmission module 22 or the signal input part of wire signal transport module 21；
One diode D1, its negative pole is coupled between signal source and metal-oxide-semiconductor Q, and positive pole is coupled to wire signal transport module
21 or the signal input part of wireless signal transmission module 22.
When signal voltage is in normal condition, metal-oxide-semiconductor Q is in the conduction state, and once signal occurs abnormal, triggers signal
Driving MOS to block, now the voltage of signal source is all loaded onto metal-oxide-semiconductor Q or the two ends of diode D1, if now diode D1
Conducting voltage reasonable, then will be reversed and puncture so that signal selects another transmission means to be transmitted through diode D1, by
This change ensure that the seriality that signal transmits, it is to avoid temperature display shows mistake due to the interference of signal.
For the scheme of embodiment one, owing to the temperature display in foundry is in the state worked always, therefore,
When the signal in holding wire is in normal condition, the signal voltage in holding wire should be maintained within the scope of certain, when
When signal is interfered and interrupts or increase suddenly, detector unit 1 will detect that above-mentioned change, and at this moment switch unit 3 is just
The mode transmitted by signal is switched to by wired transmission means and wirelessly transmits, or contrary with said process.Ensure
The quality of signal transmission and seriality, the interference free performance of promotion signal line.
Embodiment two, as shown in figures 1 and 3, a kind of foundry holding wire noise trap, with the district of embodiment one
It is not: switch unit 3 includes:
One not gate NOT, its signal input part is coupled to trigger signal；
The grid of one first metal-oxide-semiconductor Q1, the first metal-oxide-semiconductor Q1 is coupled to the signal output part of not gate NOT, the first metal-oxide-semiconductor Q1
Source electrode be coupled to signal source, drain electrode is coupled to the signal input of wireless signal transmission module 22 or wire signal transport module 21
End；
One second metal-oxide-semiconductor Q2, the grid of the second metal-oxide-semiconductor Q2 is coupled to trigger signal, and its source electrode is coupled to signal source, drain electrode
It is coupled to wire signal transport module 21 or the signal input part of wireless signal transmission module 22.
Technique scheme, when signal voltage is in normal condition, triggers signal and does not exports, and the first metal-oxide-semiconductor Q1 is in
Conducting state, now signal is transmitted by the mode of wire transmission, and when signal transmission occurs abnormal, triggers signal defeated
Go out, turn on the second metal-oxide-semiconductor Q2, so that signal behavior another way is transmitted, it is ensured that signal transmission stability with
Seriality.
Further, it is provided with an electric capacity between the second metal-oxide-semiconductor Q2 and the triggering signal output part of detector unit 1.
Due to metal-oxide-semiconductor response speed quickly, and the output of not gate NOT is relatively slow comparatively speaking, thus there will be in short-term
The possibility of interior two signal line simultaneous transmission of signals, in order to offset the delay effect of not gate NOT self, at the second metal-oxide-semiconductor Q2
Before electric capacity is set, the equivalent capacity of size NAND gate NOT of electric capacity self is suitable, it is possible to ensure that signal synchronization is only by one
Mode is transmitted, it is to avoid interfere.
For embodiment one and embodiment two, in order to reduce the error of detection, the signal output part of scope determination module 14
It is additionally provided with delay confirmation module 4 afterwards, including:
One delay circuit, receives and triggers signal, exports a triggering signal to be confirmed after delay predetermined time；
One or two input and door, its signal input part is respectively coupled to triggering signal to be confirmed and triggers signal, and output one is true
Recognize triggering signal.
Delay confirmation circuit can use simple delay circuit in embodiment one and embodiment two, such as 555 time delay electricity
Road realizes, and the time of time delay measures according to concrete demand.By arranging delay confirmation circuit, can effectively get rid of the short time
When the exception of long period occur in the interference that interior signal voltage saltus step is brought, only signal voltage, just output triggers signal.
Being described in further detail, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 is NMOS tube.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, without departing from the some improvement under this utility model principle premise and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (9)
1. foundry's holding wire noise trap, it is characterised in that including:
Detector unit (1), in order to the amplitude size of signal in signal lines and export an amplitude detection signal, if it exceedes pre-
If value, then output one triggering signal；
Signal transmission unit (2), including wired signal transmission module (21) and wireless signal transmission module (22), original state
Time, wire signal transport module (21) and wireless signal transmission module (22) one of them communicate to connect with signal source, receive also
Transmission signal；
Switch unit (3), including at least one electric-controlled switch element, in response to described triggering signal, selectivity Continuity signal source
With wire signal transport module (21) or wireless signal transmission module (22).
Foundry the most according to claim 1 holding wire noise trap, it is characterised in that described detector unit
(1) including:
Voltage sensor (11), electrically connects with described holding wire, in order to the amplitude size of signal in signal lines and export institute
State amplitude detection signal；
Upper limit module (12), including first liang of input comparator, its positive and negative input is respectively coupled to described detector unit
(1) amplitude detection signal, and one first reference voltage signal, export a upper limit comparison signal；
Lower limit module (13), including second liang of input comparator, its positive and negative input is respectively coupled to one second reference voltage
Signal, and the amplitude detection signal of described detector unit (1), export a lower limit comparison signal；
Scope determination module (14), including one or two input or door, its signal input part is respectively coupled to described upper limit and compares letter
Number with lower limit comparison signal, export described triggering signal.
Foundry the most according to claim 1 holding wire noise trap, it is characterised in that described wireless signal passes
Defeated module (22) including: WIFI wireless signal transmission module (22) or GPRS communication module or bluetooth communication.
Foundry the most according to claim 1 holding wire noise trap, it is characterised in that described switch unit
(3) including:
One metal-oxide-semiconductor, the grid of described metal-oxide-semiconductor is coupled to described triggering signal, and its source electrode is coupled to signal source, and drain electrode is coupled to institute
State wireless signal transmission module (22) or the signal input part of wire signal transport module (21)；
One diode, its negative pole is coupled between described signal source and metal-oxide-semiconductor, and positive pole is coupled to described wire signal transport module
Or the signal input part of wireless signal transmission module (22) (21).
Foundry the most according to claim 1 holding wire noise trap, it is characterised in that described switch unit
(3) including:
One not gate, its signal input part is coupled to described triggering signal；
One first metal-oxide-semiconductor, the grid of described first metal-oxide-semiconductor is coupled to the signal output part of described not gate, described first metal-oxide-semiconductor
Source electrode is coupled to signal source, and drain electrode is coupled to described wireless signal transmission module (22) or the letter of wire signal transport module (21)
Number input；
One second metal-oxide-semiconductor, the grid of described second metal-oxide-semiconductor is coupled to described triggering signal, and its source electrode is coupled to described signal source,
Drain electrode is coupled to described wire signal transport module (21) or the signal input part of wireless signal transmission module (22).
Foundry the most according to claim 5 holding wire noise trap, it is characterised in that described second metal-oxide-semiconductor
And it is provided with an electric capacity between the triggering signal output part of described detector unit (1).
Foundry the most according to claim 2 holding wire noise trap, it is characterised in that described scope judges mould
Delay confirmation module (4) it is additionally provided with after the signal output part of block (14), including:
One delay circuit, receives described triggering signal, exports a triggering signal to be confirmed after delay predetermined time；
One or two input and door, its signal input part is respectively coupled to described triggering signal to be confirmed and triggers signal, and output one is true
Recognize triggering signal.
Foundry the most according to claim 2 holding wire noise trap, it is characterised in that described detector unit
(1) also include:
One reference voltage generation module (15), including multiple resistance being arranged in series, described first reference voltage and the second benchmark
Voltage is picked out by between adjacent two resistance.
Foundry's holding wire noise trap the most according to claim 5, it is characterised in that described first metal-oxide-semiconductor with
Second metal-oxide-semiconductor is NMOS tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620577698.8U CN205754256U (en) | 2016-06-14 | 2016-06-14 | A kind of foundry holding wire noise trap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620577698.8U CN205754256U (en) | 2016-06-14 | 2016-06-14 | A kind of foundry holding wire noise trap |
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| Publication Number | Publication Date |
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| CN205754256U true CN205754256U (en) | 2016-11-30 |
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| CN201620577698.8U Expired - Fee Related CN205754256U (en) | 2016-06-14 | 2016-06-14 | A kind of foundry holding wire noise trap |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112335184A (en) * | 2018-08-10 | 2021-02-05 | 株式会社日立制作所 | Determination system and method |
-
2016
- 2016-06-14 CN CN201620577698.8U patent/CN205754256U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112335184A (en) * | 2018-08-10 | 2021-02-05 | 株式会社日立制作所 | Determination system and method |
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