CN106027034A - Automatic counting device for screw-thread steel production line - Google Patents
Automatic counting device for screw-thread steel production line Download PDFInfo
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- CN106027034A CN106027034A CN201610420920.8A CN201610420920A CN106027034A CN 106027034 A CN106027034 A CN 106027034A CN 201610420920 A CN201610420920 A CN 201610420920A CN 106027034 A CN106027034 A CN 106027034A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/40—Gating or clocking signals applied to all stages, i.e. synchronous counters
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Abstract
The invention provides an automatic counting device for a screw-thread steel production line. The automatic counting device comprises a first output pulse generation unit, a second output pulse generation unit, a first narrow pulse filter unit, a second narrow pulse filter unit, and a counting processing unit; count pulses generated by the first output pulse generation unit and the second output pulse generation unit are respectively filtered by the first narrow pulse filter unit and the second narrow pulse filter unit to filter out narrow pulse interferences, and then transmitted to the counting processing unit to respectively count; and the counting processing unit takes a larger count value as a counting result of a counting device. The device further comprises a first transmission speed transformation unit and a second transmission speed transformation unit; a maximum width of a narrow pulse needed to be filtered can be changed adaptively along with the transmission speed of bar products, and can be adjusted by changing circuit parameters. The automatic counting device provided by the invention can be used in occasions of counting the number of products on various bar production lines.
Description
Technical field
The present invention relates to a kind of metallurgy bar counting equipment, especially a kind of screw-thread steel production line robot scaler.
Background technology
Metallurgy bar robot scaler is the equipment that the metallurgy industries such as screw-thread steel production are conventional, by counting assembly online to bar
Count accurately, it is simple to bar number is carried out display and the control of real-time online by metallurgical process.Due to delivery bar chain
The reasons such as bar skidding, bar rolling, bar vibration, bar juxtaposition, cause the counting pulse signal limit that detection device produces
Along there is Vibrating pulse, i.e. narrow pulse interference signal, thus produce counting error.It addition, the transmission speed of bar product is not
With, the width of narrow pulse interference signal is the most different.
Summary of the invention
In order to solve existing metallurgy bar and automatically count, particularly screw-thread steel production line counts existing problem, the present invention automatically
Provide a kind of screw-thread steel production line robot scaler, produce single including the first count pulse generation unit, the second count pulse
Unit, the first burst pulse filter element, the second burst pulse filter element, counting processing unit.
Described first count pulse generation unit exports the first inceptive impulse and is connected to the input pulse of the first burst pulse filter element
End, the output pulse ends of the first burst pulse filter element exports the first count pulse to counting processing unit；Described second counting arteries and veins
Rushing generation unit export the second inceptive impulse and be connected to the input pulse end of the second burst pulse filter element, the second burst pulse filters
The output pulse ends of unit exports the second count pulse to counting processing unit.
Described first burst pulse filter element, the second burst pulse filter element be structural parameters identical, by forward current driver
Burst pulse filter element with reverse current driver control.
First count pulse and the second count pulse are counted by described counting processing unit respectively, take count value therein relatively
Big person is as the count results of robot scaler.
Described screw-thread steel production line robot scaler also includes that the first transmission speed converter unit and the conversion of the second transmission speed are single
Unit；The input signal of described first transmission speed converter unit is the bar transmission speed of the first count pulse generation unit installation place
Degree, the control voltage input end of the first burst pulse filter element is delivered in output；The input letter of described second transmission speed converter unit
Number being the bar transmission speed of the second count pulse generation unit installation place, the control electricity of the second burst pulse filter element is delivered in output
Pressure input；The control Control of Voltage that the narrow pulse width that described burst pulse filter element filters is inputted.
Described burst pulse filter element includes forward charge-discharge circuit, reverse charge-discharge circuit, data selector；Described forward fills
The input pulse end that input is burst pulse filter element of discharge circuit；The input of described reverse charge-discharge circuit is connected to burst pulse
The input pulse end of filter element；Described data selector is alternative data selector；Two data of described data selector
Input is respectively connecting to forward charge-discharge circuit, the outfan of reverse charge-discharge circuit；The data output of described data selector
End is output pulse ends；Described data selector is carried out data by the output pulse of place burst pulse filter element and selects to control.
Described forward charge-discharge circuit includes forward current driver, forward anti-interference capacitor, the anti-interference Schmidt circuit of forward；
The input of described forward current driver is the input of forward charge-discharge circuit, and it is defeated that output is connected to the anti-interference Schmidt circuit of forward
Enter end；One end of described forward anti-interference capacitor is connected to forward anti-interference Schmidt circuit input, and other end is connected to public affairs
Altogether or the power supply of the anti-interference Schmidt circuit of forward.
Described reverse charge-discharge circuit includes reverse current driver, reverse anti-interference capacitor, reverse anti-interference Schmidt circuit；
The input of described reverse current driver is the input of reverse charge-discharge circuit, and it is defeated that output is connected to reverse anti-interference Schmidt circuit
Enter end；One end of described reverse anti-interference capacitor is connected to reverse anti-interference Schmidt circuit input, and other end is connected to public affairs
Altogether or the power supply of reverse anti-interference Schmidt circuit.
Described forward anti-interference Schmidt circuit outfan is forward charge-discharge circuit outfan, and reverse anti-interference Schmidt circuit is defeated
Going out end is reverse charge-discharge circuit outfan.
When the input of described forward current driver is for high level, outfan is that electric current drives and flows out driving electric current；Described forward electricity
When stream driver input is for low level, outfan is that voltage drives and output low level；The input of described reverse current driver is for low
During level, outfan is that electric current drives and flows out driving electric current；When the input of described reverse current driver is for high level, outfan
Drive and output low level for voltage.
The narrow pulse width that described burst pulse filter element filters by bar transmission speed control method is, forward charge-discharge circuit
The charging rate of charging rate and reverse charge-discharge circuit is controlled by bar transmission speed.The charging speed of described forward charge-discharge circuit
The method that the charging rate of degree and reverse charge-discharge circuit is controlled by bar transmission speed is, forward current driver, reverse current
The outflow of driver drives size of current to be controlled by bar transmission speed；When bar transmission speed increases, forward current drives
The outflow of device, reverse current driver output drives electric current to increase；When bar transmission speed reduces, forward current driver,
The outflow of reverse current driver output drives electric current to reduce.
When being same phase relation between described data selector output signal and forward anti-interference Schmidt circuit input signal, data are selected
Select between device output signal and reverse anti-interference Schmidt circuit input signal as inverted relationship；Described data selector output signal
And when being inverted relationship between forward anti-interference Schmidt circuit input signal, data selector output signal is executed with the most anti-interference
It is same phase relation between close special circuit input signal.
The concrete grammar that described data selector is carried out data selection control by the output pulse of place burst pulse filter element is, when
It is same phase relation, data selector output letter between data selector output signal and forward anti-interference Schmidt circuit input signal
Number and reverse anti-interference Schmidt circuit input signal between when being inverted relationship, the low level control data selector of output pulse
The output signal selecting the anti-interference Schmidt circuit of forward delivers to the outfan of data selector, and high level controls data selector choosing
The output signal selecting reverse anti-interference Schmidt circuit delivers to the outfan of data selector；When data selector output signal with just
It is inverted relationship, data selector output signal and reverse anti-interference Schmidt electricity between anti-interference Schmidt circuit input signal
When being same phase relation between the input signal of road, the low level control data selector of output pulse selects reverse anti-interference Schmidt electricity
The output signal on road delivers to the outfan of data selector, and high level controls data selector and selects the anti-interference Schmidt circuit of forward
Output signal deliver to the outfan of data selector.
The positive narrow pulse width that described burst pulse filter element can filter drives electricity also by the outflow changing forward current driver
Stream scope and forward anti-interference capacitor size are controlled, it is possible to the negative narrow pulse width of filtration drives also by changing reverse current
Outflow drive current range and the reverse anti-interference capacitor size of dynamic device are controlled.
The invention has the beneficial effects as follows: described screw-thread steel production line robot scaler is to being arranged on the two of bar transmission diverse location
The count pulse that individual counting and detecting device (i.e. count pulse generation unit) produces counts respectively, is avoided that or reduces rod
The counting error that material intersects, overlap is brought；The positive burst pulse during broad pulse and the negative narrow arteries and veins during positive broad pulse are born in automatic fitration
Punching, and quick-recovery filter capacity can filter the positive burst pulse of continuous print or negative narrow pulse interference signal soon, eliminate count pulse letter
Rising edge in number is shaken continuously and is shaken continuously with trailing edge, it is to avoid or reduce counting error；Need the burst pulse filtered maximum
Width can be followed bar transmission speed and be carried out adaptive change, and can be adjusted by changing circuit parameter.
Accompanying drawing explanation
Fig. 1 is screw-thread steel production line robot scaler example structure block diagram；
Fig. 2 is burst pulse filter element embodiment；
Fig. 3 is the waveform of burst pulse filter element embodiment；
Fig. 4 is transmission speed converter unit embodiment；
Fig. 5 is forward current driver and reverse current driver embodiment 1 circuit；
Fig. 6 is forward current driver and reverse current driver embodiment 2 circuit；
Fig. 7 is forward current driver and reverse current driver embodiment 3 circuit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
It is illustrated in figure 1 screw-thread steel production line robot scaler example structure block diagram.First count pulse generation unit 101
Export the first inceptive impulse M1, the first burst pulse filter element 201 M1 is carried out burst pulse filtration, obtain filtering interfering
The first count pulse N1 after pulse；Second count pulse generation unit 102 exports the second inceptive impulse M2, narrow by second
Pulse filter unit 202 carries out burst pulse filtration to M2, obtains the second count pulse N2 after filtering interfering pulse.The
One count pulse N1, the second count pulse N2 are sent to count processing unit 301.
First count pulse generation unit, the second count pulse generation unit are that photoswitch conventional on production line, Hall are opened
Pass, magnetic reed switch, or the counting and detecting device such as inductance approach switch, capacitive approach switch.When metallurgy bar produces
Line has bar through one inceptive impulse signal of out-of-date output.Inceptive impulse is the count pulse of non-filtering interference signals.
The counting and detecting device of the first count pulse generation unit and the second count pulse generation unit is respectively arranged in bar transmission
Different section chains, or be arranged on bar and transmit the diverse location of same section of chain, such as, it is arranged on bar and transmits same section of chain
Head end and tail end.
N1, N2 are counted by counting processing unit 301 respectively, and take count value the greater therein as counting assembly
Count results.If carrying out continuous counter, can first set one cycle time X, in each cycle time,
Take the numerical value the greater during N1, N2 are counted as the count results of counting assembly in this cycle time.Due to the first counting arteries and veins
The counting and detecting device rushing generation unit and the second count pulse generation unit is arranged on the diverse location of bar transmission, same bar
The moment arriving the first count pulse generation unit and the second count pulse generation unit is different.If same bar is from the first counting arteries and veins
Rush generation unit transport and arrive the time phase difference X1 of the second count pulse generation unit, then the second count pulse generation unit sets
Same period time X X1 lag time that cycle time, X set than the first count pulse generation unit.
During continuous counter, or set a count value as counting cycle, the numerical value the greater in N1, N2 are counted
When reaching the count value set, restart to carry out the counting in next counting cycle.Similarly, a count value is set as meter
During one number time, the counting period start time of the first count pulse generation unit and the second count pulse generation unit needs consideration same
One bar arrives the first count pulse generation unit and the time difference of the second count pulse generation unit.
Counting processing unit can use various methods well-known to those skilled in the art to realize, it is preferred to use MCU is core
Circuit realize.
Burst pulse filter element includes forward charge-discharge circuit, reverse charge-discharge circuit, data selector.
It is illustrated in figure 2 burst pulse filter element embodiment.In embodiment, forward current driver, forward anti-interference capacitor,
The anti-interference Schmidt circuit of forward is respectively current driver U11, electric capacity C11, Schmidt circuit F11, constitutes forward and fills
Discharge circuit；Reverse current driver, reverse anti-interference capacitor, reverse anti-interference Schmidt circuit are respectively current driver
U21, electric capacity C21, Schmidt circuit F21, constitute reverse charge-discharge circuit.The one termination Schmidt circuit of electric capacity C11
The input of F11, other end is connected to publicly；The input of the one termination Schmidt circuit F21 of electric capacity C21, additionally
One end is connected to publicly.P1 is input pulse end, and P2 is output pulse ends.
In embodiment, data selector T11 is alternative data selector, two between data input signal and output signal all
Being same phase relation, Schmidt circuit F11, Schmidt circuit F21 are then respectively homophase Schmidt circuit and anti-phase Schmidt electricity
Road, therefore, is same phase relation between data selector T11 output and Schmidt circuit F11 input signal, data selector
It is inverted relationship between T11 output and Schmidt circuit F21 input signal.The function of data selector T11 is: when selecting control
During end A=0 processed, export Y=D1；When selecting to control end A=1, export Y=D2.The outfan of data selector T11
Y (i.e. pulse output end P2) is connected directly to the selection of data selector T11 and controls end A, and output pulse P2 is low level
Time, control data selector T11 and select output signal A3 of Schmidt circuit F11 to deliver to the outfan Y of data selector；
When output pulse P2 is high level, controls data selector T11 and select output signal A4 of Schmidt circuit F21 to deliver to number
Outfan Y according to selector.
Fig. 3 is the waveform of burst pulse filter element embodiment, exports A3 including input pulse P1 and Schmidt circuit F11, executes
Close special circuit F21 output A4, the waveform of output pulse P2.In Fig. 2, when input pulse P1 is maintained low level for a long time
Time, A1 point is low level, and the output A3 of Schmidt circuit F11 is low level；When input pulse P1 is maintained high for a long time
During level, A1 point is high level, and A3 is high level.When input pulse P1 becomes low level from high level, electric current drives
The output A1 of device U11 is immediately turned into low level current potential, and A3 becomes low level from high level immediately.When input pulse P1 is from low
When level becomes high level, the driving electric current that A1 current potential exports because of current driver U11 rises to electric capacity C11 charging, when
When charging interval reaches the upper limit threshold voltage that the rising of T1, A1 current potential meets and exceeds Schmidt circuit F11, A3 is from low electricity
Put down and become high level；When the positive pulse width of P1 is not up to Schmidt circuit less than T1, charging interval less than T1, A1 current potential
During the upper limit threshold voltage of F11, P1 becomes low level, and A1 current potential is immediately turned into low level current potential, and A3 maintains low level shape
State.In Fig. 3, the original state of P1 and A3 is low level.Positive burst pulse 11, positive burst pulse 12, the width of positive burst pulse 13
Degree is respectively less than T1, A1 current potential cannot be charged to or exceed the upper limit threshold voltage of Schmidt circuit F11, to A3 state
Not impact；The width of the positive pulse 14 of P1 is more than T1, and therefore, the rising edge in the positive pulse 14 of P1 crosses time T1
After, A3 becomes high level from low level.The trailing edge of the positive pulse 14 of P1 makes A3 become low level from high level, P1's
The width of positive pulse 15 is more than T1, and after positive pulse 15 rising edge crosses time T1, A3 becomes high level from low level.P1
The trailing edge of positive pulse 15 makes A3 become low level from high level, the positive pulse 16 of P1, positive pulse 17, positive pulse 18
Width is respectively less than T1, and therefore, A3 is not affected by positive pulse 16, positive pulse 17, positive pulse 18, and A3 maintains low level
State.The width of the positive pulse 19 of P1 is more than T1, and after positive pulse 19 rising edge crosses time T1, A3 becomes from low level
High level.
In Fig. 2, when input pulse P1 is maintained low level for a long time, A2 point is high level, and Schmidt circuit F21's is defeated
Going out A4 is low level；When input pulse P1 is maintained high level for a long time, A2 point is low level, and A4 is high level.
When input pulse P1 becomes high level from low level, the output A2 of current driver U21 is immediately turned into low level current potential,
A4 becomes high level from low level immediately.When input pulse P1 becomes low level from high level, A2 current potential drives because of electric current
Device U21 output driving electric current to electric capacity C21 charging and rise, when charging between reach T2, A2 current potential rise reach to execute
During the upper limit threshold voltage of close special circuit F21, A4 becomes low level from high level；When the negative pulse width of P1 is less than T2,
When charging interval does not rises, less than T2, A2 current potential, the upper limit threshold voltage reaching Schmidt circuit F21, P1 i.e. becomes high electricity
Flat, A2 is immediately turned into low level current potential, and A4 maintains high level state.In Fig. 3, the original state of P1 and A4 is low electricity
Flat.The rising edge of the positive pulse 11 of P1 makes A4 become high level from low level, and the width of the negative pulse 20 of P1 is more than T2,
After negative pulse 20 trailing edge crosses time T2, A4 becomes low level from high level.The rising edge of the positive pulse 12 of P1 makes A4
Becoming high level from low level, the negative pulse 20 of P1, the width of negative pulse 21 are respectively less than T2, therefore, negative pulse 20, negative
A4 is not affected by pulse 21, and A4 maintains low level state.Negative pulse 23, negative pulse 24, negative pulse 25, negative pulse
The width of 26 is respectively less than the upper limit threshold voltage that T2, A2 current potential cannot be charged to or be higher than Schmidt circuit F21, right
A4 state does not affect；The width of the negative pulse 27 of P1 is more than T2, therefore, out-of-date at the trailing edge of the negative pulse 27 of P1
Between after T2, A4 becomes low level from high level.At the rising edge of the negative pulse 27 of P1, A4 becomes high electricity from low level
Flat.
The output A3 of Schmidt circuit F11 keeps low level when input pulse P1 is low level, at input pulse P1 by low
Level is crossed time T1 after becoming high level and is just become high level.The output A4 of Schmidt circuit F21 is high at input pulse P1
Keep high level during level, after input pulse P1 is become low level from high level, cross time T2 just become low level.Or
Saying, when A3 is high level, A4 must be high level；When A4 is low level, A3 must be low level.
In Fig. 3, the original state of A3, A4 is low level, and the output Y of data selector T11 is low level, and data are selected
Selecting device T11 selects A3 as exporting Y and being to maintain low level period at A3.When A3 becomes from low level at edge 30
During high level, output Y becomes high level, and data selector T11 selects A4 as output Y, and now A4 must be high electricity
Flat, maintain the high level state of output Y.When A4 becomes low level at edge 31 from high level, output Y becomes low electricity
Flat, data selector T11 selects A3 as output Y, and now A3 must be low level, maintains the low level shape of output Y
State.When A3 becomes high level at edge 32 from low level, output Y becomes high level, and data selector T11 selects A4
As output Y, now A4 must be high level, maintains the high level state of output Y.
Burst pulse filter element is by the burst pulse 11 in P1 signal, burst pulse 12, burst pulse 13, burst pulse 23, burst pulse
24, burst pulse 25, burst pulse 26 all filter out, and positive broad pulse 14 (includes positive pulse 14, positive pulse 15, positive pulse
16, positive pulse 17 and positive pulse 18, negative pulse 23, negative pulse 24, negative pulse 25, negative pulse 26 are disturbing pulse),
Negative broad pulse 27 can be passed through, and makes occur corresponding positive broad pulse 28 and negative broad pulse 29 in P2 signal.Output pulse P2
With input pulse P1 homophase, and broad pulse 28 rising edge that exports is than positive broad pulse 14 rising edge T1 lag time of input,
Trailing edge T2 lag time.
Positive pulse 11, positive pulse 12, positive pulse 13 are positive burst pulse, and time T1 is that burst pulse filter element can filter
Maximum positive narrow pulse width.T1 is the positive charge time.The outflow of T1 current driven device U11 drive size of current,
The low level current potential of current driver U11, electric capacity C11 size, the common shadow of upper limit threshold voltage of Schmidt circuit F11
Ring.Under normal circumstances, the value adjusting T1 can drive size of current and electric capacity by changing the outflow of current driver U11
C11 size is carried out.
Negative pulse 23, negative pulse 24, negative pulse 25, negative pulse 26 are negative burst pulse, and time T2 is burst pulse filter element
The maximum that can filter bears narrow pulse width.T2 is the reverse charging time.The outflow of T2 current driven device U21 drives
Size of current, the low level current potential of current driver U21, electric capacity C21 size, the upper limit threshold electricity of Schmidt circuit F21
Pressure joint effect.Under normal circumstances, the value adjusting T2 can drive size of current by changing the outflow of current driver U21
Carry out with electric capacity C21 size.
In Fig. 2, electric capacity C11 connects one end publicly can be with reconfiguration in Schmidt circuit F11, the confession of Schmidt circuit F21
Electricity power end；Similarly, electric capacity C21 connect one end publicly can also individually or together with electric capacity C11 reconfiguration execute close
Special circuit F11, the power supply end of Schmidt circuit F21.
In Fig. 2, Schmidt circuit F11, Schmidt circuit F21 can also simultaneously or separately select anti-phase Schmidt circuit,
Can also be simultaneously or separately inverted relationship between input D1, D2 and the output Y of data selector T11.Work as Schmidt
Circuit F11, Schmidt circuit F21 simultaneously or separately select anti-phase Schmidt circuit, the input of data selector T11
When being simultaneously or separately inverted relationship between D1, D2 and output Y, need to meet following condition, it may be assumed that when data select
When being same phase relation between device T11 output Y and Schmidt circuit F11 forward charge-discharge circuit input signal, data selector
It is inverted relationship between T11 output Y and Schmidt circuit F21 input signal；Now the low level control of Y selects Schmidt
The outfan of data selector T11 is delivered in the output of circuit F11, and the high level of Y controls the defeated of selection Schmidt circuit F21
Go out to deliver to the outfan of data selector T11.When data selector T11 output Y and Schmidt circuit F11 input signal it
Between when being inverted relationship, be same phase relation between data selector T11 output Y and Schmidt circuit F21 input signal；This
Time Y low level control select the output of Schmidt circuit F21 to deliver to the outfan of data selector T11, the high level of Y
Control the outfan selecting the output of Schmidt circuit F11 to deliver to data selector T11.
The anti-interference Schmidt circuit of described forward, reverse anti-interference Schmidt circuit are Schmidt circuit, and input signal is electric capacity
On voltage, it is therefore desirable to Schmidt circuit has high input impedance charcteristic.Schmidt circuit can select have high input resistance
Cmos schmitt phase inverter CD40106,74HC14 of anti-characteristic, or select that there is high input impedance charcteristic
The devices such as cmos schmitt NAND gate CD4093,74HC24.Cmos schmitt phase inverter or cmos schmitt with
The upper limit threshold voltage of not gate is the fixed value relevant to device.Constitute homophase by schmitt inverter or Schmidt's NAND gate to execute
Close special circuit, needs to increase one-level phase inverter after schmitt inverter or Schmidt's NAND gate.
Schmidt circuit can also select to use operational amplifier to constitute, and uses operational amplifier to constitute Schmidt circuit permissible
Change upper limit threshold voltage, lower limit threshold voltage neatly.Similarly, when using operational amplifier to constitute Schmidt circuit,
Need to use structure and the circuit with high input impedance charcteristic.
Data selector can select the devices such as 74HC151,74HC152,74HC153, CD4512, CD4539 to constitute two
Select a data selector, it is also possible to constitute alternative data selector with gate circuit.
As it is shown in figure 1, screw-thread steel production line robot scaler embodiment also include the first transmission speed converter unit 401,
Two transmission speed converter units 402.Fig. 4 is transmission speed converter unit embodiment, it is adaptable to the first transmission speed converter unit
Time, transmission speed n of the input of transmission speed converter unit shown in Fig. 4 is the first count pulse generation unit installation place in Fig. 1
Bar transmission speed n1, output UK is the control electricity of the transmission speed input delivering to the first burst pulse filter element in Fig. 1
Pressure UK1；When being applicable to the second transmission speed converter unit, input transmission speed n of transmission speed converter unit shown in Fig. 4
For bar transmission speed n2 of the second count pulse generation unit installation place in Fig. 1, output UK is that to deliver to second in Fig. 1 narrow
The control voltage UK2 of the transmission speed input of pulse filter unit.Similarly, burst pulse filter element shown in Fig. 2 is implemented
When example is as the first burst pulse filter element, the UK in Fig. 2 is UK1；The embodiment conduct of burst pulse filter element shown in Fig. 2
During the second burst pulse filter element, the UK in Fig. 2 is UK2.UK1 is the first control voltage, and UK2 is the second control electricity
Pressure.
First count pulse generation unit, the width shaking burst pulse continuously exporting porch of the second count pulse generation unit
Spend respectively by bar transmission speed n1, bar transmission speed n2, transmission speed n i.e. inputted by transmission speed converter unit
Impact changes.When transmission speed n increases, the first count pulse generation unit, the output arteries and veins of the second count pulse generation unit
The width of the continuous Vibrating pulse on trimming edge reduces；When Transmission speed n reduces, the first count pulse generation unit,
The width of the continuous Vibrating pulse of the output porch of two count pulse generation units increases.
When the counting and detecting device of the first count pulse generation unit and the second count pulse generation unit is respectively arranged in bar transmission
Different section chain time, bar transmission speed n1 is different from bar transmission speed n2, first transmission speed converter unit output
The UK2 of UK1 and the output of the second transmission speed converter unit is unequal.When the first count pulse generation unit and the second counting arteries and veins
Rush the counting and detecting device of generation unit when being arranged on the diverse location that bar transmits same section of chain, bar transmission speed n1 and rod
Material transmission speed n2 is identical, and the UK1 of the first transmission speed converter unit output and the second transmission speed converter unit export
UK2 is equal, now can omit the second transmission speed converter unit, uses the control electricity of the first transmission speed converter unit output
Pressure UK1 is simultaneously as controlling voltage UK2.
In Fig. 4, F71 is bar transmission speed sensor, and bar transmission speed n is converted to voltage Un output by F71.Fortune
Put F72 and resistance R76, resistance R77, resistance R78, resistance R79 composition null value adjustment circuit, control voltage UK from fortune
Put the output of F72 outfan.It is that the null value inputted by change adjusts voltage VREF, by rod that null value adjusts one of effect of circuit
The control voltage UK of minimum speed (usually 0) correspondence of material transmission speed n is adjusted to non-zero value；Two is to improve to control electricity
The driving force of pressure UK.The scope of the control voltage UK that input velocity interval is corresponding is by adjusting bar transmission speed sensor
F71 parameter, null value adjust circuit parameter and null value adjusts voltage VREF and carries out.In Fig. 4 embodiment, when bar transmission speed
When degree n increases, output controls voltage UK and increases；When bar transmission speed n reduces, output controls voltage UK and reduces.
Fig. 5 is forward current driver and reverse current driver embodiment 1 circuit.Open-drain output driven in phase device F12, electricity
Resistance R11 forms forward current driver.When P1 is low level, driven in phase device F12 output A1 is low level；P1 is high
During level, driven in phase device F12 is open-drain output, is flowed out driving electricity as power supply through resistance R11 by controlling voltage UK
Stream.The driving size of current that flows out of forward current driver is controlled the control of voltage UK, and bar transmission speed n increases
Time, output controls voltage UK and increases, and flows out and drives electric current to increase.
Open-drain output rp-drive F22, resistance R21 form reverse current driver.When P1 is high level, anti-phase driving
Device F22 output A2 is low level；When P1 is low level, rp-drive F22 is open-drain output, is made by controlling voltage UK
Driving electric current is flowed out through resistance R21 for power supply.Flowing out of reverse current driver drives size of current to be controlled voltage UK's
Controlling, when bar transmission speed n increases, output controls voltage UK and increases, and flows out and drives electric current to increase.
Driven in phase device F12, rp-drive F22 can select the integrated circuit of various open collector, open-drain.
Fig. 6 is forward current driver and reverse current driver embodiment 2 circuit.Audion V21, resistance R22, resistance
R23 forms reverse current driver, when P1 is high level, audion V21 saturation conduction, reverse current driver output A2
For low level；When P1 is low level, audion V21 ends, and is driven through resistance R22 outflow as power supply by controlling voltage UK
Streaming current.The driving size of current that flows out of reverse current driver is controlled the control of voltage UK, and bar transmission speed n increases
Time big, output controls voltage UK and increases, and flows out and drives electric current to increase.
Audion V11, audion V12, resistance R12, resistance R13, resistance R14 form forward current driver, P1
During for low level, audion V12 ends, audion V11 saturation conduction, and forward current driver output A1 is low electricity
Flat；When P1 is high level, audion V12 saturation conduction, audion V11 ends, by controlling voltage UK as power supply warp
Resistance R12 flows out and drives electric current.The driving size of current that flows out of forward current driver is controlled the control of voltage UK, rod
When material transmission speed n increases, output controls voltage UK and increases, and flows out and drives electric current to increase.Audion V12 in Fig. 5,
The negative circuit of resistance R14 composition can also substitute with other phase inverters.
In Fig. 5 and Fig. 6, when controlling voltage UK and being definite value, the stream that forward current driver and reverse current driver provide
Going out to drive electric current is not the driving electric current of constant size, can change within limits；When controlling voltage UK change, forward
The outflow driving size of current scope that current driver and reverse current driver provide on the whole can model-following control voltage UK
Change and change.
Fig. 7 is forward current driver and reverse current driver embodiment 3 circuit.Amplifier F61, amplifier F62, audion
V61, audion V62, resistance R61, resistance R62, resistance R63, resistance R64, resistance R65, resistance R66 form
Reverse current driver, wherein, amplifier F61, amplifier F62, audion V61, resistance R61, resistance R62, resistance
R63, resistance R64, resistance R65 form reverse constant-current circuit, and its output electric current I2 size is controlled voltage UK's by input
Control, control voltage UK constant, then output electric current I2 is constant；Control voltage UK to increase, then output electric current I2 increases.
When P1 is high level, audion V62 saturation conduction, reverse current driver output A2 is low level；P1 is low level
Time, audion V62 ends, and reverse current driver flows out the constant-current driving electric current I2 that size-controlled voltage UK processed controls.
Amplifier F51, amplifier F52, audion V51, audion V52, audion V53, resistance R51, resistance R52,
Resistance R53, resistance R54, resistance R55, resistance R56, resistance R57 form forward current driver, and wherein, amplifier is transported
Put F51, amplifier F52, audion V51, resistance R51, resistance R52, resistance R53, resistance R54, resistance R55 group
Becoming forward constant-current circuit, its output electric current I1 size is controlled voltage UK by input and is controlled, and controls voltage UK constant,
Then output electric current I1 is constant；Control voltage UK to increase, then output electric current I1 increases.When P1 is low level, audion V53
Cut-off, audion V52 saturation conduction, forward current driver output A1 is low level；When P1 is high level, audion
V53 saturation conduction, audion V52 ends, and forward current driver flows out the constant-current driving that size-controlled voltage UK processed controls
Electric current I1.The negative circuit of audion V53, the resistance R57 composition in Fig. 7 can also substitute with other phase inverters.
When the upper limit threshold voltage of electric capacity C11 and Schmidt circuit F11 keeps constant, bar transmission speed n increases, electricity
The outflow of stream driver U11 output drives electric current to increase, and the charging rate of electric capacity C11 is accelerated, and T1 reduces；Otherwise, bar
Transmission speed n reduces, and the outflow of current driver U11 output drives electric current to reduce, and the charging rate of electric capacity C11 is slack-off,
T1 increases；The charging rate achieving forward charge-discharge circuit is controlled by bar transmission speed.Achieve disturbing pulse in other words
During filtration, it is possible to the bar transmission speed Self Adaptive Control of the maximum positive narrow pulse width T1 of filtration, i.e. bar transmission speed n
During change, T1 follows the change of bar transmission speed n in a given scope.If change electric capacity C11 size or
The upper limit threshold voltage of Schmidt circuit F11, then T1 follow bar transmission speed n change given range entirety can change
Become, such as, increase electric capacity C11, then, in same bar transmission speed n excursion, T1 follows the upper of constant interval
Limit value and lower limit increase.
When the upper limit threshold voltage of electric capacity C21 and Schmidt circuit F21 keeps constant, bar transmission speed n increases, electricity
The outflow of stream driver U21 output drives electric current to increase, and the charging rate of electric capacity C21 is accelerated, and T2 reduces；Otherwise, bar
Transmission speed n reduces, and the outflow of current driver U21 output drives electric current to reduce, and the charging rate of electric capacity C21 is slack-off,
T2 increases；The charging rate achieving reverse charge-discharge circuit is controlled by bar transmission speed.In other words, it is achieved that interference arteries and veins
When breaking through filter, it is possible to the maximum of filtration bears the bar transmission speed Self Adaptive Control of narrow pulse width T2, i.e. bar transmission speed
During n change, T2 follows the change of bar transmission speed n in a given scope.If change electric capacity C21 size or
Person is the upper limit threshold voltage of Schmidt circuit F21, then T2 follow bar transmission speed n change given range entirety can change
Become, such as, reduce electric capacity C21, then, in same bar transmission speed n excursion, T2 follows the upper of constant interval
Limit value and lower limit reduce.
When by Fig. 5, or Fig. 6, or the forward input driver shown in Fig. 7 and reversely input driver embodiment as the
When the forward input driver in one burst pulse filter element and reversely input driver, the UK in corresponding map is UK1；When
By Fig. 5, or Fig. 6, or the input driver of forward shown in Fig. 7 and reverse input driver embodiment are as the second burst pulse
When the forward input driver in filter element and reversely input driver, the UK in corresponding map is UK2.
Claims (10)
1. a screw-thread steel production line robot scaler, it is characterised in that:
Including the first count pulse generation unit, the second count pulse generation unit, the first burst pulse filter element, the second burst pulse mistake
Filter unit, counting processing unit；
Described first count pulse generation unit exports the first inceptive impulse and is connected to the input pulse end of the first burst pulse filter element,
The output pulse ends of the first burst pulse filter element exports the first count pulse to counting processing unit；Described second count pulse produces
Raw unit exports the second inceptive impulse and is connected to the input pulse end of the second burst pulse filter element, the second burst pulse filter element
Output pulse ends export the second count pulse to counting processing unit；
Described first burst pulse filter element, the second burst pulse filter element be structural parameters identical, by forward current driver and anti-
The burst pulse filter element controlled to current driver；
First count pulse and the second count pulse are counted by described counting processing unit respectively, take count value the greater therein
Count results as robot scaler.
Screw-thread steel production line robot scaler the most according to claim 1, it is characterised in that: also include the first transmission speed
Converter unit and the second transmission speed converter unit；The input signal of described first transmission speed converter unit is the first count pulse
The bar transmission speed of generation unit installation place, the control voltage input end of the first burst pulse filter element is delivered in output；Described
The input signal of two transmission speed converter units is the bar transmission speed of the second count pulse generation unit installation place, and output is delivered to
The control voltage input end of the second burst pulse filter element；The control that the narrow pulse width that described burst pulse filter element filters is inputted
Control of Voltage processed.
Screw-thread steel production line robot scaler the most according to claim 2, it is characterised in that: described burst pulse filter element
Including forward charge-discharge circuit, reverse charge-discharge circuit, data selector；
The input pulse end that input is burst pulse filter element of described forward charge-discharge circuit；The input of described reverse charge-discharge circuit is even
It is connected to the input pulse end of burst pulse filter element；
Described data selector is alternative data selector；Two data input pins of described data selector are respectively connecting to forward and fill
Discharge circuit, the outfan of reverse charge-discharge circuit；
The data output end of described data selector is output pulse ends；Described data selector is by the output of place burst pulse filter element
Pulse carries out data and selects to control.
Screw-thread steel production line robot scaler the most according to claim 3, it is characterised in that: described forward charge-discharge circuit
Including forward current driver, forward anti-interference capacitor, the anti-interference Schmidt circuit of forward；Described forward current driver inputs
For the input of forward charge-discharge circuit, output is connected to forward anti-interference Schmidt circuit input；The anti-interference electricity of described forward
The one end held is connected to forward anti-interference Schmidt circuit input, and other end is connected to publicly or forward is anti-interference executes
The power supply of close special circuit；
Described reverse charge-discharge circuit includes reverse current driver, reverse anti-interference capacitor, reverse anti-interference Schmidt circuit；Described
The input of reverse current driver is the input of reverse charge-discharge circuit, and output is connected to the input of reverse anti-interference Schmidt circuit
End；One end of described reverse anti-interference capacitor is connected to reverse anti-interference Schmidt circuit input, and other end is connected to public
Ground or the power supply of reverse anti-interference Schmidt circuit；
Described forward anti-interference Schmidt circuit outfan is forward charge-discharge circuit outfan, reverse anti-interference Schmidt circuit outfan
For reverse charge-discharge circuit outfan.
Screw-thread steel production line robot scaler the most according to claim 4, it is characterised in that: described forward current driver
When input is for high level, outfan is that electric current drives and flows out driving electric current；The input of described forward current driver is low level
Time, outfan is that voltage drives and output low level；When the input of described reverse current driver is for low level, outfan is electric current
Drive and flow out and drive electric current；When the input of described reverse current driver is for high level, outfan is that voltage drives and exports low electricity
Flat.
Screw-thread steel production line robot scaler the most according to claim 5, it is characterised in that: described burst pulse filter element
The narrow pulse width filtered by bar transmission speed control method is, the charging rate of forward charge-discharge circuit and reverse discharge and recharge electricity
The charging rate on road is controlled by bar transmission speed.
Screw-thread steel production line robot scaler the most according to claim 6, it is characterised in that: described forward charge-discharge circuit
Charging rate and the method that controlled by bar transmission speed of the charging rate of reverse charge-discharge circuit be, forward current driver,
The outflow of reverse current driver drives size of current to be controlled by bar transmission speed；When bar transmission speed increases, forward electricity
Stream driver, the outflow of reverse current driver output drive electric current to increase；When bar transmission speed reduces, forward current drives
Dynamic device, the outflow of reverse current driver output drive electric current to reduce.
Screw-thread steel production line robot scaler the most according to claim 4, it is characterised in that: described data selector exports
When being same phase relation between signal and forward anti-interference Schmidt circuit input signal, data selector output signal is dry with the most anti-
Disturb between Schmidt circuit input signal as inverted relationship；Described data selector output signal and the anti-interference Schmidt circuit of forward
When being inverted relationship between input signal, between data selector output signal and reverse anti-interference Schmidt circuit input signal it is
Same phase relation.
Screw-thread steel production line robot scaler the most according to claim 8, it is characterised in that: described data selector is by institute
Burst pulse filter element output pulse carry out data select control concrete grammar be, when data selector output signal with just
It is same phase relation, data selector output signal and reverse anti-interference Schmidt electricity between anti-interference Schmidt circuit input signal
When being inverted relationship between the input signal of road, the low level control data selector of output pulse selects forward anti-interference Schmidt electricity
The output signal on road delivers to the outfan of data selector, and high level controls data selector and selects reverse anti-interference Schmidt circuit
Output signal deliver to the outfan of data selector；When data selector output signal inputs with the anti-interference Schmidt circuit of forward
It is for relevant between signal between inverted relationship, data selector output signal and reverse anti-interference Schmidt circuit input signal
When being, the low level control data selector of output pulse selects the output signal of reverse anti-interference Schmidt circuit to deliver to data choosing
Selecting the outfan of device, high level controls data selector and selects the output signal of the anti-interference Schmidt circuit of forward to deliver to data selection
The outfan of device.
10. according to the screw-thread steel production line robot scaler according to any one of claim 4-9, it is characterised in that: described narrow
The positive narrow pulse width that pulse filter unit can filter is also by the outflow drive current range and just changing forward current driver
It is controlled to anti-interference capacitor size, it is possible to the negative narrow pulse width of filtration is also by the outflow changing reverse current driver
Drive current range and reverse anti-interference capacitor size are controlled.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144182.4A CN109327220B (en) | 2016-06-15 | 2016-06-15 | Automatic counting method for deformed steel bar production line |
| CN201610420920.8A CN106027034B (en) | 2016-06-15 | 2016-06-15 | Screw-thread steel production line robot scaler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610420920.8A CN106027034B (en) | 2016-06-15 | 2016-06-15 | Screw-thread steel production line robot scaler |
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| CN201811144182.4A Division CN109327220B (en) | 2016-06-15 | 2016-06-15 | Automatic counting method for deformed steel bar production line |
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| CN106027034A true CN106027034A (en) | 2016-10-12 |
| CN106027034B CN106027034B (en) | 2018-11-30 |
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| CN201610420920.8A Active CN106027034B (en) | 2016-06-15 | 2016-06-15 | Screw-thread steel production line robot scaler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976719A (en) * | 2017-11-16 | 2018-05-01 | 湖南工业大学 | Automatic assembly line product counting signal generating method |
| CN108423388A (en) * | 2018-02-02 | 2018-08-21 | 武汉云众科技有限公司 | Screw-thread steel method of counting based on infrared acquisition and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111462151B (en) * | 2020-03-27 | 2023-05-02 | 广东交通职业技术学院 | Thread counting method, system, device and storage medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109327220B (en) | 2022-03-18 |
| CN109327220A (en) | 2019-02-12 |
| CN106027034B (en) | 2018-11-30 |
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Effective date of registration: 20200527 Address after: 435100 Jinhu Ma Hai, Daye City, Huangshi City, Hubei Province Patentee after: Daye Huaxin Industry Co.,Ltd. Address before: 808, floor 8, building B, business center, gangzhilong science and Technology Park, No. 6, Qinglong Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Pengbo Information Technology Co.,Ltd. Effective date of registration: 20200527 Address after: 808, floor 8, building B, business center, gangzhilong science and Technology Park, No. 6, Qinglong Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Pengbo Information Technology Co.,Ltd. Address before: 412007 School of industry, research and production, Hunan University of Technology, 88 West Taishan Road, Zhuzhou, Hunan Patentee before: HUNAN UNIVERSITY OF TECHNOLOGY |