CN106096711B - Metallurgy bar auto-counter - Google Patents
Metallurgy bar auto-counter Download PDFInfo
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- CN106096711B CN106096711B CN201610420776.8A CN201610420776A CN106096711B CN 106096711 B CN106096711 B CN 106096711B CN 201610420776 A CN201610420776 A CN 201610420776A CN 106096711 B CN106096711 B CN 106096711B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
- G06M1/272—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum using photoelectric means
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Abstract
A kind of metallurgy bar auto-counter including the first output impulse generating unit, the second output impulse generating unit, the first burst pulse filter element, the second burst pulse filter element, counts processing unit.The counting pulse that first output impulse generating unit, the second output impulse generating unit generate is filtered out to send after narrow pulse interference to counting processing unit respectively by the first burst pulse filter element, the second burst pulse filter element and be counted respectively, is counted processing unit and is taken count results of the count value the greater therein as metallurgy bar auto-counter.The metallurgy bar auto-counter can apply the occasion for needing to be counted on various production line of bar to product quantity.
Description
Technical field
The present invention relates to a kind of metallurgy bar counting equipment, especially a kind of automatic count of the steel rods device.
Background technology
Metallurgy bar counter is the common equipment of metallurgy industry, and bar is accurately counted online by counter
Number, convenient for carrying out the display and control of real-time online in metallurgical process to bar number.Due to the skidding of delivery bar chain, bar
The reasons such as rolling, bar trembling, bar juxtaposition cause the counting pulse signal edge that detection device generates to there is shake arteries and veins
Punching, i.e. narrow pulse interference signal, so as to generate counting error.
Invention content
In order to solve the problems of existing metallurgy bar automatic assembly line product counting, the present invention provides a kind of smeltings
Golden automatic count of the steel rods device counts impulse generating unit, the second counting impulse generating unit, the filtering of the first burst pulse including first
Unit, counts processing unit at the second burst pulse filter element.
The first counting impulse generating unit exports the first inceptive impulse and is connected to the first burst pulse filter element
Input pulse end, output pulse ends output the first counting pulse of the first burst pulse filter element is to counting processing unit；It is described
Second counting impulse generating unit exports the second inceptive impulse and is connected to the input pulse end of the second burst pulse filter element, the
Output pulse ends output the second counting pulse of two burst pulse filter elements is to counting processing unit.
The first burst pulse filter element, the second burst pulse filter element for structural parameters it is identical, by multi-channel analog
Switch the burst pulse filter element of control；The counting processing unit counts pulse and second to first and counts pulse progress respectively
It counts, takes count results of the count value the greater therein as metallurgy bar auto-counter.
The specific method of the count results as metallurgy bar auto-counter that take count value the greater therein
It is to set cycle time, in a cycle time, takes count value the greater therein as stick metallurgical in the cycle time
The count results of material auto-counter.
The burst pulse filter element includes quick discharging circuit, quick-charging circuit, capacitance, Schmidt circuit；It is described
One end of quick discharging circuit is input pulse end, and other end is connected to Schmidt circuit input terminal；The quick charge electricity
The one end on road is connected to input pulse end, and other end is connected to Schmidt circuit input terminal；One end of the capacitance is connected to
Schmidt circuit input terminal, other end are connected to publicly the either power supply of Schmidt circuit；Schmidt's electricity
The output terminal on road is output pulse ends.
The quick discharging circuit includes repid discharge diode, charging resistor, repid discharge switch；The repid discharge
After diode is in parallel with charging resistor, then switchs and connect with repid discharge；The quick-charging circuit includes two pole of quick charge
Pipe, discharge resistance, fast charge switch；After the quick charge diode is in parallel with discharge resistance, then with fast charge switch
Series connection.
Unidirectional current flow direction on the repid discharge diode is to flow to burst pulse filtering from Schmidt circuit input terminal
The input pulse end of unit；Unidirectional current flow direction on the quick charge diode is the input arteries and veins from burst pulse filter element
It rushes end and flows to Schmidt circuit input terminal.
The repid discharge switch, fast charge switch by place burst pulse filter element output Pulse Width Control, specifically
Method is, when Schmidt circuit is with phase Schmidt circuit, exports the low level control repid discharge switch connection, fast of pulse
Fast charge switch shutdown, high level control repid discharge switch OFF, the fast charge switch for exporting pulse are connected；Work as Schmidt
When circuit is reverse phase Schmidt circuit, high level control repid discharge switch connection, the fast charge switch shutdown of pulse are exported,
Export the low level control repid discharge switch OFF of pulse, fast charge switch is connected.
The repid discharge switch and fast charge switch are numerically controlled multiway analog switch.
The positive narrow pulse width that the burst pulse filter element can filter is by changing charge constant or applying close
The upper limit threshold voltage of special circuit is controlled, the negative narrow pulse width that can filter by change discharge time constant or
The lower limit threshold voltage of Schmidt circuit is controlled.The charge constant is charging resistor and the product of capacitance；Institute
State product of the discharge time constant for discharge resistance and capacitance.
The Schmidt circuit has high input impedance charcteristic.
The beneficial effects of the invention are as follows：The metallurgy bar auto-counter is to being mounted on the two of bar transmission different location
The counting pulse that a counting and detecting device (counting impulse generating unit) generates is counted respectively, is avoided that or reduces stick
The counting error that material intersects, overlap zone comes；Automatic fitration bear broad pulse during positive burst pulse and positive broad pulse during it is negative narrow
Pulse, and the continuous positive burst pulse of quick-recovery filter capacity filtering or negative narrow pulse interference signal, elimination can count arteries and veins soon
The rising edge rushed in signal continuously continuously shake by shake and failing edge, avoids or reduce counting error.
Description of the drawings
Fig. 1 is metallurgy bar auto-counter example structure block diagram；
Fig. 2 is burst pulse filter element embodiment 1；
Fig. 3 is the input pulse and output pulse waveform of burst pulse filter element embodiment 1；
Fig. 4 is burst pulse filter element embodiment 2；
Fig. 5 is burst pulse filter element embodiment 3；
Fig. 6 is the input pulse and output pulse waveform of burst pulse filter element embodiment 3；
Fig. 7 is burst pulse filter element embodiment 4；
Fig. 8 is burst pulse filter element embodiment 5；
Fig. 9 is burst pulse filter element embodiment 6.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
It is metallurgy bar auto-counter example structure block diagram as shown in Figure 1.First counting impulse generating unit 101 is defeated
Go out the first inceptive impulse M1, burst pulse filtering carried out to M1 by the first burst pulse filter element 201, obtain filtering out disturbing pulse it
First afterwards counts pulse N1；Second, which counts impulse generating unit 102, exports the second inceptive impulse M2, is filtered by the second burst pulse
Unit 202 carries out burst pulse filtering to M2, obtains filtering out the second counting pulse N2 after disturbing pulse.First counts pulse
N1, the second counting pulse N2 are sent to and count processing unit 301.
First count impulse generating unit, second count impulse generating unit for common optoelectronic switch on production line, suddenly
The counting and detecting devices such as your switch, magnetic reed switch or inductance approach switch, capacitive approach switch.Work as metallurgy bar
Production line has bar to export an inceptive impulse signal when passing through.Inceptive impulse is the counting pulse of non-filtering interference signals.
The counting and detecting device of first counting impulse generating unit and the second counting impulse generating unit is respectively arranged in stick
The different section chains of material transmission or the different location that same section of chain is transmitted mounted on bar, for example, same mounted on bar transmission
The head end and tail end of one section of chain.
It counts processing unit 301 respectively to count N1, N2, and takes count value the greater therein as metallurgical stick
The count results of material auto-counter.If carrying out continuous counter, a cycle time X can be set first, at each
In cycle time, meter of the numerical value the greater in being counted to N1, N2 as metallurgy bar auto-counter in the cycle time is taken
Number result.The counting and detecting device for counting impulse generating unit and the second counting impulse generating unit due to first is mounted on bar
The different location of transmission, same bar reach first count impulse generating unit and second at the time of count impulse generating unit not
Together.If same bar counts impulse generating unit transport from first and reaches the second time phase difference X1 for counting impulse generating unit,
When then the second cycle time X for counting impulse generating unit setting counts the same period of impulse generating unit setting than first
Between X lag time X1.
During continuous counter or one count value of setting is as the period is counted, and the numerical value in being counted to N1, N2 is larger
When person reaches the count value of setting, restart to carry out next counting for counting the period.Similarly, a count value conduct is set
When counting the period, the counting period start time needs of the first counting impulse generating unit and the second counting impulse generating unit are examined
Consider same bar and reached for the first time difference for counting impulse generating unit and the second counting impulse generating unit.
It counts processing unit various methods well-known to those skilled in the art may be used and realize, it is preferred to use MCU is
The circuit of core is realized.
Burst pulse filter element includes quick discharging circuit, quick-charging circuit, capacitance and Schmidt circuit.
It is illustrated in figure 2 burst pulse filter element embodiment 1.In embodiment illustrated in fig. 21, repid discharge diode, charging
Resistance, repid discharge switch are respectively diode D11, resistance R11, switch T11, constitute quick discharging circuit；Quick charge
Diode, discharge resistance, fast charge switch are respectively diode D12, resistance R12, switch T12, constitute quick charge electricity
Road；Capacitance is capacitance C11.Schmidt circuit F11 be with phase Schmidt circuit, in embodiment illustrated in fig. 21 output pulse P2 with it is defeated
Enter the same phases of pulse P1.The input terminal of a termination Schmidt circuit of capacitance C11, i.e. the input terminal A2 of F11, other end are connected to
Publicly.The anode of diode D11 is connected to the input terminal A2 of F11, and cathode is connected to input pulse end after connecting with switch T11
P1, when switching T11 conductings, the unidirectional current flow direction of diode D11 is to flow to input pulse end P1 from the input terminal A2 of F11.
The cathode of diode D12 is connected to the input terminal A2 of F11, and anode is connected to input pulse end P1 after connecting with switch T12, when opening
When closing T12 conductings, the unidirectional current flow direction of diode D12 is that the input terminal A2 of F11 is flowed to from input pulse end P1.
Repid discharge switch, the bilateral analog switch that fast charge switch is level control.In embodiment illustrated in fig. 21, open
It closes T11, switch switch connection when T12 selects control signal as high level, switch OFF is double when control signal is low level
To analog switch, model can select CD4066 or CD4016.Schmidt circuit F11 is same in embodiment illustrated in fig. 21
Phase Schmidt circuit, output pulse P2 (A3 points in Fig. 2) are connected directly to the level control terminal of switch T12, output pulse P2's
High and low level controls switch T12 to connect respectively, shutdown；Output pulse P2 is after phase inverter F12 (in Fig. 2Point) it is connected to
The level control terminal of T11 is switched, the high and low level of output pulse P2 controls switch T11 shutdowns, connects respectively.By output arteries and veins
Rush the control of P2, switch T11 in switch T12 always one in an ON state, another is off state.
Fig. 3 is the input pulse and output pulse waveform of burst pulse filter element embodiment 1.In Fig. 3, P1 is input arteries and veins
Punching, P2 are output pulse, when P1 low levels is normally negative broad pulses, A2 point current potentials and A1 point low levels current potential one in Fig. 2
It causes, P2 is low level, and switch T11 is connected, T12 shutdowns.The high level of positive burst pulse 11 is by charging resistor R11 to capacitance C11
Charging rises A2 points current potential；Since the width of burst pulse 11 is less than time T1, A2 point current potentials are still low at the end of burst pulse 11
In the upper limit threshold voltage of Schmidt circuit F11, therefore, P2 is maintained low level, and switch T11 maintains to connect；11 knot of burst pulse
Shu Shi, A1 point become low level and make capacitance C11 repid discharges by repid discharge diode D11 again, make A2 point current potentials with
A1 point low level current potentials are consistent, restore to burst pulse 11 state before arriving, antijamming capability is restored rapidly, when below
When immediately having continuous positive narrow pulse interference signal, can equally it filter out.Positive burst pulse 12, the width of positive burst pulse 13 are small
In time T1, therefore, at the end of each in burst pulse 12, burst pulse 13, P2 is maintained low level, and A1 points become again
Low level and capacitance C11 repid discharges are made by repid discharge diode D11, make A2 point current potentials and A1 point low levels current potential one
It causes.
Pulse 14 is normal positive broad pulse, and P1 is when maintaining high level time to reach T1 after rising edge 20, the height of P1
Level charges to capacitance C11 by charging resistor R11, the upper limit threshold electricity that the rising of A2 points current potential is made to reach Schmidt circuit F11
Pressure, Schmidt circuit F11 outputs P2 become high level from low level at rising edge 25, connect switch T11 shutdowns, T12；A1
The high level of point makes capacitance C11 quick charges by quick charge diode D12, makes A2 point current potentials and A1 point high level current potential one
It causes, P2 is maintained high level.
The low level of negative burst pulse 15 discharges to capacitance C11 by discharge resistance R12, declines A2 points current potential；Due to narrow
The width of pulse 15 is less than time T2, and A2 point current potentials remain above the lower limit threshold of Schmidt circuit F11 at the end of burst pulse 15
Voltage, therefore, P2 are maintained high level, and switch T12 maintains to connect；At the end of burst pulse 15, A1 points become again high level and
Capacitance C11 quick charges are made by quick charge diode D12, make A2 point current potentials consistent with A1 point high level current potentials, are restored extremely
Burst pulse 15 arrive before state, antijamming capability restored rapidly, when followed by there is continuously negative narrow pulse interference
During signal, can equally it filter out.Negative burst pulse 16, negative burst pulse 17, negative burst pulse 18 width be respectively less than time T2, because
This, at the end of each in burst pulse 16, burst pulse 17, burst pulse 18, P2 is maintained high level, and A1 points become high again
Level and capacitance C11 quick charges are made by quick charge diode D12, make A2 point current potentials consistent with A1 point high level current potentials.
For P1 when low level time is maintained to reach T2 after failing edge 21, representing P1, there are one normally negative broad pulse, P1
Low level discharged by discharge resistance R12 capacitance C11, the decline of A2 points current potential is made to reach the lower limit door of Schmidt circuit F11
Sill voltage, Schmidt circuit F11 outputs P2 become low level at failing edge 26 from high level, connect switch T11, T12 is closed
It is disconnected；The low level of A1 points makes capacitance C11 repid discharges by repid discharge diode D11, makes A2 point current potentials and A1 point low levels
Current potential is consistent, and P2 is maintained low level.19 width of negative broad pulse of P1 is more than T2, is tieed up after the rising edge 22 of negative broad pulse 19
When holding high level time and reaching T1, P2 becomes high level at rising edge 27 from low level.
Burst pulse filter element is by burst pulse 11, burst pulse 12, burst pulse 13, burst pulse 15, the burst pulse in P1 signals
16th, burst pulse 17, burst pulse 18 all filter out, and positive broad pulse 14, negative broad pulse 19 can pass through, and make phase occur in P2 signals
The positive broad pulse 23 and negative broad pulse 24 answered.The output same phases of pulse P2 and input pulse P1, and 23 rising edge of broad pulse exported
Than the broad pulse 14 rising edge lag time T1, failing edge lag time T2 of input.
Burst pulse 11, burst pulse 12, burst pulse 13 be positive burst pulse, wherein burst pulse 11 be single disturbing pulse, narrow arteries and veins
Punching 12, the continuous Vibrating pulse that burst pulse 13 is inceptive impulse edge.Time T1 can be filtered most for burst pulse filter element
Big positive narrow pulse width.T1 is electric by the low level of charge constant, the high level current potential of input pulse P1, input pulse P1
Position and the upper limit threshold voltage joint effect of Schmidt circuit F11.Under normal conditions, the high level current potential of input pulse P1 and low
Level potential is definite value, and therefore, the value for adjusting T1 can be by changing the upper limit door of charge constant or Schmidt circuit
Sill voltage carries out.In Fig. 2, product of the charge constant for charging resistor R11 and capacitance C11.
Burst pulse 15, burst pulse 16, burst pulse 17, burst pulse 18 are negative burst pulse, and wherein burst pulse 15 is single interference
Pulse, burst pulse 16, burst pulse 17, the continuous Vibrating pulse that burst pulse 18 is inceptive impulse edge.Time T2 is burst pulse mistake
The maximum that filter unit can filter bears narrow pulse width.T2 is by discharge time constant, the high level current potential, defeated of input pulse P1
Enter the low level current potential of pulse P1 and the lower limit threshold voltage joint effect of Schmidt circuit F11.Under normal conditions, input pulse
The high level current potential and low level current potential of P1 be definite value, therefore, adjust T2 value can by change discharge time constant or
The lower limit threshold voltage of Schmidt circuit carries out.In Fig. 2, discharge time constant is multiplying for discharge resistance R12 and capacitance C11
Product.
In Fig. 2, with connecting again with switch T11 after resistance R11 parallel connections, input pulse P1 is first passed through diode D11 from A1 points
It switchs T11 and then reaches A2 points by the parallel circuit of diode D11 and resistance R11, flow to relationship according to pulse signal, soon
Fast discharge switch is connected in series in before repid discharge diode and the parallel circuit of charging resistor；Diode D12 and resistance
It connects again with switch T12 after R12 parallel connections, flows to relationship according to pulse signal, fast charge switch is connected in series in quick charge
Before the parallel circuit of diode and discharge resistance.The series position of repid discharge switch can also be placed on two pole of repid discharge
Behind pipe and the parallel circuit of charging resistor, similarly, the series position of fast charge switch can also be placed on quick charge
Behind the parallel circuit of diode and discharge resistance.In addition, capacitance C11 connect one end publicly can also reconfiguration in burst pulse
The power supply end (i.e. power supply+the VCC of Schmidt circuit F11) of filter element.
In Fig. 2, Schmidt circuit F11 can also select reverse phase Schmidt circuit, export pulse P2 and input pulse at this time
P1 reverse phases export pulse P2 and its inversion signal control switch T11, switch the connection mode needs of T12 according to output pulse P2
High and low level control switch T12 shutdowns respectively, connect, the high and low level of output pulse P2 controls switch T11 to connect respectively,
It turns off to carry out.
Fig. 4 show burst pulse filter element embodiment 2, repid discharge diode, charging resistor, repid discharge switch point
Not Wei diode D21, resistance R21, switch T21, quick charge diode, discharge resistance, fast charge switch are respectively two poles
Pipe D22, resistance R22, switch T22, capacitance are capacitance C21.Schmidt circuit F21 is with phase Schmidt circuit, output pulse P2
(B3 points in Fig. 4) is connected directly to the level control terminal of switch T22；Output pulse P2 is after phase inverter F22 (in Fig. 4
Point) it is connected to the level control terminal of switch T21.Embodiment illustrated in fig. 42 is similar with 1 structure of embodiment shown in Fig. 2, difference
Place one is the input terminal of a termination Schmidt circuit of capacitance C21, and other end is connected to the power supply electricity of burst pulse filter element
Source+VCC, difference according to pulse signal second is that flow to relationship, the series position of repid discharge switch is in two pole of repid discharge
Pipe is connected on behind the parallel circuit of charging resistor, that is, switching T21 behind diode D21 and resistance R21 parallel circuits.
The operation principle of embodiment illustrated in fig. 42 is identical with embodiment illustrated in fig. 21.
Burst pulse filter element embodiment 3 is illustrated in figure 5, repid discharge diode, charging resistor are respectively diode
D31, resistance R31, quick charge diode, discharge resistance are respectively diode D32, resistance R32, repid discharge switch with it is quick
Charge switch is numerically controlled multiway analog switch T31, and the normal open switch of T31 is switched for repid discharge, and normally closed switch is fast
Fast charge switch；Normal open switch (C1 in Fig. 5) the composition repid discharge of diode D31, resistance R31 and multiway analog switch T31
Circuit, normally closed switch (C0 in Fig. 5) the composition quick-charging circuit of diode D32, resistance R32 and multiway analog switch T31；Electricity
Hold and terminate the input terminal of Schmidt circuit, i.e. the input terminal C2 of F31 for capacitance C31, the one of capacitance C31, other end is connected to
Publicly.Schmidt circuit F31 is reverse phase Schmidt circuit, it is desirable that the high level control repid discharge switch of output pulse P2 connects
Logical, fast charge switch shutdown, low level control repid discharge switch OFF, fast charge switch are connected；In Fig. 5, arteries and veins is exported
It rushes P2 (C3 points in Fig. 5) and is connected directly to the digital control end of multiway analog switch T31, the high level control of output pulse P2 is more
The normal open switch of path analoging switch T31 is connected, normally closed switch shutdown, that is, exports the high level control repid discharge switch of pulse P2
It connects, fast charge switch shutdown；The normal open switch for exporting the low level control multiway analog switch T31 of pulse P2 turns off, often
Switch connection is closed, that is, exports the low level control repid discharge switch OFF of pulse P2, fast charge switch is connected.
Numerically controlled multiway analog switch can select the device of the different models such as CD4051, CD4052, CD4053.Figure
5 Fig. 6 are the input pulse and output pulse waveform of burst pulse filter element embodiment 3.In Fig. 6, P1 is input pulse, and P2 is
Pulse is exported, when P1 low levels is normally negative broad pulses, C2 point current potentials and pulse input end C4 point low level current potentials in Fig. 5
Unanimously, P2 is high level, and T31 normal open switch is connected, normally closed switch shutdown.The high level of positive burst pulse 31 passes through charging resistor
R31 charges to capacitance C31, and C2 points current potential is made to increase；Since the width of burst pulse 31 is less than time T1, C2 point current potentials are in burst pulse
The upper limit threshold voltage of Schmidt circuit F31 is still below at the end of 31, therefore, P2 is maintained high level, and T31 states maintain；It is narrow
Pulse 31 terminates, and C4 points become low level and make capacitance C31 repid discharges by repid discharge diode D31 again, make C2 points
Current potential is consistent with C4 point low level current potentials, restores to burst pulse 31 state before arriving, and antijamming capability is restored rapidly,
When followed by there is continuous positive narrow pulse interference signal, can equally it filter out.The width of positive burst pulse 32, positive burst pulse 33
Degree is respectively less than time T1, and therefore, at the end of each in burst pulse 32, burst pulse 33, P2 is maintained high level, C4 point weights
Newly become low level and capacitance C31 repid discharges are made by repid discharge diode D31, make C2 point current potentials and C4 points low level electricity
Position is consistent.
Pulse 34 is normal positive broad pulse, and P1 is when maintaining high level time to reach T1 after rising edge 40, the height of P1
Level charges to capacitance C31 by charging resistor R31, the upper limit threshold electricity that the rising of C2 points current potential is made to reach Schmidt circuit F31
Pressure, Schmidt circuit F31 outputs P2 become low level at failing edge 45 from high level, make the shutdown of T31 normal open switch, normally closed open
It closes and connects；The high level of C4 points makes capacitance C31 quick charges by quick charge diode D32, makes C2 point current potentials high with C4 points
Level potential is consistent, and P2 is maintained low level.
The low level of negative burst pulse 35 discharges to capacitance C31 by discharge resistance R32, declines C2 points current potential；Due to narrow
The width of pulse 35 is less than time T2, and C2 point current potentials remain above the lower limit threshold of Schmidt circuit F31 at the end of burst pulse 35
Voltage, therefore, P2 are maintained low level, and T31 states maintain；Burst pulse 35 terminates, and C4 points become high level and again by fast
Fast charging diode D32 makes capacitance C31 quick charges, makes C2 point current potentials consistent with C4 point high level current potentials, restores to burst pulse
State before 31 arrivings, antijamming capability are restored rapidly, when followed by there is continuously negative narrow pulse interference signal,
It can equally filter out.Negative burst pulse 36, negative burst pulse 37, negative burst pulse 38 width be respectively less than time T2, therefore, when narrow arteries and veins
At the end of each in punching 36, burst pulse 37, burst pulse 38, P2 is maintained low level, and C4 points become high level and lead to again
Crossing quick charging diode D32 makes capacitance C31 quick charges, makes C2 point current potentials consistent with C4 point high level current potentials.
For P1 when low level time is maintained to reach T2 after failing edge 41, representing P1, there are one normally negative broad pulse, P1
Low level discharged by discharge resistance R32 capacitance C31, the decline of C2 points current potential is made to reach the lower limit door of Schmidt circuit F31
Sill voltage, Schmidt circuit F31 outputs P2 become high level from low level at rising edge 46, connect T31 normal open switch, often
Close switch OFF；The low level of C4 points makes capacitance C31 repid discharges by repid discharge diode D31, makes C2 point current potentials and C4
Point low level current potential is consistent, and P2 is maintained high level.39 width of negative broad pulse of P1 is more than T2, in the rising edge of negative broad pulse 39
When maintenance high level time reaches T1 after 42, P2 becomes low level at failing edge 47 from high level.
Burst pulse filter element is by burst pulse 31, burst pulse 32, burst pulse 33, burst pulse 35, the burst pulse in P1 signals
36th, burst pulse 37, burst pulse 38 all filter out, and positive broad pulse 34, negative broad pulse 39 can pass through, and make phase occur in P2 signals
Negative broad pulse 43 answer and with P1 reverse phases and positive broad pulse 44.Burst pulse 31, burst pulse 32, burst pulse 33 are positive burst pulse,
Wherein burst pulse 31 be disturbing pulse, burst pulse 32, burst pulse 33 be inceptive impulse edge continuous Vibrating pulse.Burst pulse
35th, burst pulse 36, burst pulse 37, burst pulse 38 are negative burst pulse, and wherein burst pulse 35 is disturbing pulse, burst pulse 36, narrow arteries and veins
Punching 37, the continuous Vibrating pulse that burst pulse 38 is inceptive impulse edge.
In Fig. 6, time T1 is the positive narrow pulse width of maximum for the input that burst pulse filter element can filter, and adjusts T1's
Value can be carried out by changing the upper limit threshold voltage of charge constant or Schmidt circuit.In Fig. 5, the charging time is normal
Product of the number for charging resistor R31 and capacitance C31.Time T2 bears narrow for the maximum of input that burst pulse filter element can filter
Pulse width.Adjust T2 value can by change the lower limit threshold voltage of discharge time constant or Schmidt circuit come into
Row.In Fig. 5, product of the discharge time constant for discharge resistance R32 and capacitance C31.
In Fig. 5, multiway analog switch T31 is divided using distributor connection by digital signal C3 control input pulses P1
It is assigned to quick discharging circuit either quick-charging circuit；Multiway analog switch T31 can also use selector connection, that is, input
Pulse P1 is sent simultaneously to quick discharging circuit and quick-charging circuit, by Digital Signals selection quick discharging circuit either
The signal of quick-charging circuit is connected to Schmidt circuit.
In Fig. 5, capacitance C31 connect one end publicly can also reconfiguration burst pulse filter element power supply end.
In Fig. 5, Schmidt circuit F31 can also select same phase Schmidt circuit.
Fig. 7 show burst pulse filter element embodiment 4, and repid discharge diode, charging resistor are respectively diode
D35, resistance R35, quick charge diode, discharge resistance are respectively diode D36, resistance R36, repid discharge switch with it is quick
Charge switch is numerically controlled multiway analog switch T35；Capacitance is capacitance C35, a termination Schmidt circuit of capacitance C35
The input terminal D2 of input terminal, i.e. F35, other end are connected to publicly.Embodiment illustrated in fig. 74 and embodiment illustrated in fig. 53
Structure is similar, is that multiway analog switch T35 employs selector connection the difference lies in one, selector connection connects with distributor
Method does not have any difference from operation principle；Second is that Schmidt circuit F35 is with phase Schmidt circuit, output pulse P2 and input
The same phases of pulse P1, output pulse P2 (D3 points in Fig. 7) is connected directly to the digital control end of multiway analog switch T35, so T35
Normally closed switch be repid discharge switch, normal open switch is fast charge switch；Diode D35, resistance R35 and multi-channel analog are opened
Normally closed switch (D0 in Fig. 7) the composition quick discharging circuit of T35 is closed, diode D36, resistance R36 are with multiway analog switch T35's
Normal open switch (D1 in Fig. 7) forms quick-charging circuit.
Fig. 8 show burst pulse filter element embodiment 5.In embodiment 5, repid discharge diode, repid discharge switch
Respectively diode D51, switch T51, constitute quick discharging circuit；Quick charge diode, fast charge switch are respectively
Diode D52, switch T52, constitute quick-charging circuit；Capacitance is capacitance C51；Schmidt circuit F51 is reverse phase Schmidt
Therefore circuit, exports pulse P2 and input pulse P1 reverse phases in embodiment illustrated in fig. 85, output pulse P2 (E3 points in Fig. 8) is straight
It is connected to the level control terminal of switch T51 in succession；Output pulse P2 is after phase inverter F52 (in Fig. 8Point) it is connected to switch
The level control terminal of T52.
In embodiment illustrated in fig. 85, respectively with repid discharge diode, quick charge diodes in parallel charging resistor, put
Resistance is cancelled, and is replaced by the charge and discharge resistance R51 for being connected in parallel on input pulse end E1 and Schmidt circuit input terminal E2.This
The circuit special case identical with discharge resistance for charging resistor, can simplify circuit structure.
Fig. 9 show burst pulse filter element embodiment 6.In embodiment 6, repid discharge diode is diode D61, soon
Fast charging diode is diode D62, and repid discharge switch is numerically controlled multiway analog switch with fast charge switch
T61；Capacitance is capacitance C61, and the one of capacitance C61 terminates the input terminal of Schmidt circuit, i.e. the input terminal F2 of F61, other end
It is connected to publicly；Multiway analog switch T61 uses distributor connection.Schmidt circuit F61 is with phase Schmidt circuit, output
The same phases of pulse P2 and input pulse P1, output pulse P2 (F3 points in Fig. 9) are connected directly to the number control of multiway analog switch T61
End processed, so the normally closed switch of T61 is switched for repid discharge, normal open switch is fast charge switch；Diode D61 and multichannel mould
Intend normally closed switch (F0 in Fig. 9) the composition quick discharging circuit of switch T41, diode D62 is normally opened with multiway analog switch T61's
Switch (F1 in Fig. 9) composition quick-charging circuit.
In embodiment illustrated in fig. 96, respectively with repid discharge diode, quick charge diodes in parallel charging resistor, put
Resistance is cancelled, and is replaced by the charge and discharge resistance R61 for being connected in parallel on input pulse end F4 and Schmidt circuit input terminal F2.This
Circuit is also the charging resistor special case identical with discharge resistance, can simplify circuit structure.
The input signal of the Schmidt circuit is the voltage on capacitance, it is therefore desirable to which Schmidt circuit has high input
Impedance operator.Schmidt circuit can select to have the cmos schmitt phase inverter CD40106 of high input impedance charcteristic,
The devices such as cmos schmitt NAND gate CD4093,74HC24 of 74HC14 or selection with high input impedance charcteristic.CMOS
Schmitt inverter or the upper limit threshold voltage of cmos schmitt NAND gate, lower limit threshold voltage are relevant solid with device
Therefore definite value, it is normal by changing the charging time to adjust the positive narrow pulse width of input that can be filtered, negative narrow pulse width needs
Number, discharge time constant carry out.It is formed with phase Schmidt circuit, needed with schmitt inverter or Schmidt's NAND gate
Increase level-one phase inverter behind schmitt inverter or Schmidt's NAND gate.
Schmidt circuit is also an option that be formed using operational amplifier, and Schmidt's electricity is formed using operational amplifier
Road can neatly change upper limit threshold voltage, lower limit threshold voltage.Similarly, Schmidt's electricity is formed using operational amplifier
Lu Shi needs to use structure and circuit with high input impedance charcteristic.
Claims (9)
1. a kind of metallurgy bar auto-counter, it is characterised in that：
Impulse generating unit, the second counting impulse generating unit, the first burst pulse filter element, the second narrow arteries and veins are counted including first
It rushes filter element, count processing unit；
The first counting impulse generating unit exports the first inceptive impulse and is connected to the input of the first burst pulse filter element
Pulse ends, output pulse ends output the first counting pulse of the first burst pulse filter element is to counting processing unit；Described second
It counts impulse generating unit to export the second inceptive impulse and be connected to the input pulse end of the second burst pulse filter element, second is narrow
Output pulse ends output the second counting pulse of pulse filter unit is to counting processing unit；
The first burst pulse filter element, the second burst pulse filter element for structural parameters it is identical, by multiway analog switch
The burst pulse filter element of control；
The counting processing unit respectively counts the first counting pulse and the second counting pulse, takes count value therein
Count results of the greater as metallurgy bar auto-counter.
2. metallurgy bar auto-counter according to claim 1, it is characterised in that：It is described take count value therein compared with
Big person is cycle time to be set, in a cycle time as the specific method of the count results of metallurgy bar auto-counter
In, take count results of the count value the greater therein as metallurgy bar auto-counter in the cycle time.
3. metallurgy bar auto-counter according to claim 1, it is characterised in that：
The burst pulse filter element includes quick discharging circuit, quick-charging circuit, capacitance, Schmidt circuit；
One end of the quick discharging circuit is input pulse end, and other end is connected to Schmidt circuit input terminal；
One end of the quick-charging circuit is connected to input pulse end, and other end is connected to Schmidt circuit input terminal；
One end of the capacitance is connected to Schmidt circuit input terminal, and other end is connected to publicly either Schmidt circuit
Power supply；
The output terminal of the Schmidt circuit is output pulse ends.
4. metallurgy bar auto-counter according to claim 3, it is characterised in that：The quick discharging circuit includes fast
Fast discharge diode, charging resistor, repid discharge switch；After the repid discharge diode is in parallel with charging resistor, then with soon
Fast discharge switch series connection；The quick-charging circuit includes quick charge diode, discharge resistance, fast charge switch；It is described
After quick charge diode is in parallel with discharge resistance, then connect with fast charge switch；
The unidirectional current flow direction of the repid discharge diode is to flow to burst pulse filter element from Schmidt circuit input terminal
Input pulse end；The unidirectional current flow direction of the quick charge diode is to be flowed to from the input pulse end of burst pulse filter element
Schmidt circuit input terminal；
The repid discharge switch, fast charge switch by place burst pulse filter element output Pulse Width Control.
5. metallurgy bar auto-counter according to claim 4, it is characterised in that：The repid discharge switchs, is quick
Charge switch is by the pulse controlled specific method of output of place burst pulse filter element, when Schmidt circuit is close with mutually applying
During special circuit, low level control repid discharge switch connection, the fast charge switch shutdown of pulse are exported, exports the height electricity of pulse
Flat control repid discharge switch OFF, fast charge switch are connected；When Schmidt circuit is reverse phase Schmidt circuit, arteries and veins is exported
The high level control repid discharge switch connection of punching, fast charge switch shutdown, export the low level control repid discharge of pulse
Switch OFF, fast charge switch are connected.
6. metallurgy bar auto-counter according to claim 4, it is characterised in that：Repid discharge switch and quick
Charge switch is numerically controlled multiway analog switch.
7. the metallurgy bar auto-counter according to any one of claim 3-6, it is characterised in that：The burst pulse
The positive narrow pulse width that filter element can filter is electric by the upper limit threshold for changing charge constant or Schmidt circuit
Pressure is controlled, and the negative narrow pulse width that can be filtered is by changing the lower limit door of discharge time constant or Schmidt circuit
Sill voltage is controlled.
8. metallurgy bar auto-counter according to claim 7, it is characterised in that：The charge constant is charging
The product of resistance and capacitance；Product of the discharge time constant for discharge resistance and capacitance.
9. metallurgy bar auto-counter according to claim 7, it is characterised in that：The Schmidt circuit has high defeated
Enter impedance operator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610420776.8A CN106096711B (en) | 2016-06-15 | 2016-06-15 | Metallurgy bar auto-counter |
| CN201810456245.3A CN108665050B (en) | 2016-06-15 | 2016-06-15 | Automatic counting method for metallurgical bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610420776.8A CN106096711B (en) | 2016-06-15 | 2016-06-15 | Metallurgy bar auto-counter |
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| CN201810456245.3A Division CN108665050B (en) | 2016-06-15 | 2016-06-15 | Automatic counting method for metallurgical bars |
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| CN106096711A CN106096711A (en) | 2016-11-09 |
| CN106096711B true CN106096711B (en) | 2018-06-26 |
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| CN201810456245.3A Active CN108665050B (en) | 2016-06-15 | 2016-06-15 | Automatic counting method for metallurgical bars |
| CN201610420776.8A Active CN106096711B (en) | 2016-06-15 | 2016-06-15 | Metallurgy bar auto-counter |
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| CN113656886A (en) * | 2021-07-28 | 2021-11-16 | 通号城市轨道交通技术有限公司 | Speed calculation method and device based on double-MCU pulse acquisition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261657A (en) * | 1998-12-24 | 2000-08-02 | 株式会社又进 | Measuring equipment and measuring method for melting slag thickness in steel making |
| CN104463319A (en) * | 2014-11-10 | 2015-03-25 | 浙江中烟工业有限责任公司 | Optical counting device for filter sticks |
| CN105513082A (en) * | 2015-12-28 | 2016-04-20 | 中建三局第一建设工程有限责任公司 | Method and device for identifying and counting number of rods in bundle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08154043A (en) * | 1994-11-29 | 1996-06-11 | Unisia Jecs Corp | Signal processor |
| CN1585274A (en) * | 2004-06-03 | 2005-02-23 | 复旦大学 | Loop filter of phaselocked loop with initial circuit |
| CN101895285B (en) * | 2009-05-21 | 2013-10-23 | 吴涛 | Direct-opening full touch, full light contact and full remote control multi-path combination series electronic switch |
| CN103679261A (en) * | 2013-11-25 | 2014-03-26 | 石家庄钢铁有限责任公司 | Counting device and counting method for metallurgy bars |
| CN104901657A (en) * | 2015-05-22 | 2015-09-09 | 浙江大学 | Full-digital debouncing circuit and method |
-
2016
- 2016-06-15 CN CN201810456245.3A patent/CN108665050B/en active Active
- 2016-06-15 CN CN201610420776.8A patent/CN106096711B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261657A (en) * | 1998-12-24 | 2000-08-02 | 株式会社又进 | Measuring equipment and measuring method for melting slag thickness in steel making |
| CN104463319A (en) * | 2014-11-10 | 2015-03-25 | 浙江中烟工业有限责任公司 | Optical counting device for filter sticks |
| CN105513082A (en) * | 2015-12-28 | 2016-04-20 | 中建三局第一建设工程有限责任公司 | Method and device for identifying and counting number of rods in bundle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106096711A (en) | 2016-11-09 |
| CN108665050A (en) | 2018-10-16 |
| CN108665050B (en) | 2022-03-18 |
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