CN108875888A - A kind of production line of bar steel splitting counts steel methods automatically - Google Patents
A kind of production line of bar steel splitting counts steel methods automatically Download PDFInfo
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- CN108875888A CN108875888A CN201810455318.7A CN201810455318A CN108875888A CN 108875888 A CN108875888 A CN 108875888A CN 201810455318 A CN201810455318 A CN 201810455318A CN 108875888 A CN108875888 A CN 108875888A
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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
Abstract
A kind of production line of bar steel splitting counts steel methods automatically, including：The counting and detecting device of the first counting impulse generating unit, the second counting impulse generating unit is installed respectively in the different section chains of bar transmission, or in the different location that bar transmits same section of chain；The pulse signal of pulse signal and the second counting impulse generating unit output to the first counting impulse generating unit output carries out burst pulse filtering and counting respectively, takes count value the greater therein as the count results of production line of bar steel splitting several steel automatically；The narrow pulse width of the burst pulse filter element filtering is controlled by bar transmission speed, and the burst pulse maximum width for needing to filter can follow bar product transmission speed to carry out adaptive change, and can be adjusted by changing circuit parameter.The method can be applied counts the occasion for needing to count product quantity on the various production line of bar such as steel in steel splitting automatically.
Description
Present patent application is divisional application, and application No. is 201610421539.3, the applying date is in June, 2016 for original bill
15, entitled production line of bar steel splitting counted steel device automatically.
Technical field
The present invention relates to a kind of metallurgy bar counting apparatus and method for, especially a kind of production line of bar steel splitting counts steel automatically
Method.
Background technique
Metallurgy bar rolled piece counting device is the common equipment of metallurgy industry, for example, the number steel steel splitting platform of steel plant is logical
It crosses counting device online to count bar, is convenient for automatic steel splitting.Due to delivery bar chain skid, bar roll,
The reasons such as bar trembling, bar juxtaposition, there are Vibrating pulses at the counting pulse signal edge for causing detection device to generate, i.e.,
Narrow pulse interference signal, to generate counting error.In addition, the transmission speed of bar product is different, narrow pulse interference signal
Width is also different.
Summary of the invention
In order to solve to ask present in automatic several steel counting devices of existing production line of bar, especially steel splitting production line
Topic, the present invention provides a kind of production line of bar steel splittings to count steel method automatically, including：In the different section chains of bar transmission, or
The first counting impulse generating unit, the second counting impulse generating unit are installed respectively in the different location that bar transmits same section of chain
Counting and detecting device；The pulse signal and second for counting impulse generating unit output to first count impulse generating unit output
Pulse signal carry out burst pulse filtering and counting respectively, take count value the greater therein as production line of bar steel splitting from
The count results of dynamic number steel；It is defeated that the pulse signal and second for counting impulse generating unit output to first count impulse generating unit
Pulse signal out carries out burst pulse filtering respectively and is realized by the burst pulse filter element that bilateral analog switch controls.
The narrow pulse width of the burst pulse filter element filtering is controlled by bar transmission speed.
The burst pulse filter element includes controllable charging circuit, controllable discharge circuit, capacitor, Schmidt circuit；It is described
One end of capacitor is connected to Schmidt circuit input terminal, and other end is connected to the power supply electricity of publicly either Schmidt circuit
Source；The input of the controllable charging circuit is the input pulse end of burst pulse filter element, and it is defeated that output is connected to Schmidt circuit
Enter end；The input of the controllable discharge circuit is connected to the input pulse end of burst pulse filter element, and output is connected to Schmidt
Circuit input end；The output end of the Schmidt circuit is the output pulse ends of burst pulse filter element.
The controllable charging circuit includes repid discharge diode, charging resistor, repid discharge tri-state gate；It is described quickly to put
Electric diode cathode is connected to repid discharge tri-state gate output terminal, and anode is controllable charging circuit output end；The charging resistor
With repid discharge diodes in parallel；The controllable discharge circuit includes quick charge diode, discharge resistance, quick charge tri-state
Door；The quick charge diode anode is connected to quick charge tri-state gate output terminal, and cathode is controllable discharge circuit output end；
The discharge resistance and quick charge diodes in parallel；The repid discharge tri-state gate input terminal is the input of controllable charging circuit
End；The quick charge tri-state gate input terminal is controllable discharge circuit input terminal；The repid discharge tri-state gate and quick charge
Tri-state gate by place burst pulse filter element output pulse control.
The repid discharge tri-state gate and quick charge tri-state gate by place burst pulse filter element output pulse control
Specific method be, when Schmidt circuit be with phase Schmidt circuit when, export the low level control repid discharge tri-state of pulse
Door is in working condition, quick charge tri-state gate is illegal state, exports the high level control repid discharge tri-state gate of pulse to prohibit
Only state, quick charge tri-state gate are in working condition；When Schmidt circuit is reverse phase Schmidt circuit, the height electricity of pulse is exported
Flat control repid discharge tri-state gate is in working condition, quick charge tri-state gate is illegal state, exports the low level control of pulse
Repid discharge tri-state gate is illegal state, quick charge tri-state gate is in working condition.
The method that the narrow pulse width of the burst pulse filter element filtering is controlled by bar transmission speed is repid discharge
The high level current potential that tri-state gate, quick charge tri-state gate export is controlled by bar transmission speed.
What the high level current potential that the repid discharge tri-state gate, quick charge tri-state gate export was controlled by bar transmission speed
Method is, when bar transmission speed increases, the high level current potential that repid discharge tri-state gate, quick charge tri-state gate export increases
Greatly；When bar transmission speed reduces, the high level current potential that repid discharge tri-state gate, quick charge tri-state gate export reduces；Its
Implementation method is：Detection bar transmission speed is simultaneously converted to control voltage；Voltage will be controlled as fast in burst pulse filter element
The power supply of speed electric discharge tri-state gate and quick charge tri-state gate.
The positive narrow pulse width of maximum that the burst pulse filter element can filter also pass through change charge constant or
The upper limit threshold voltage of person's Schmidt circuit controls, and the negative narrow pulse width of maximum that can be filtered also passes through change electric discharge
The lower limit threshold voltage of time constant or Schmidt circuit is controlled；The charge constant is charging resistor and electricity
The product of appearance；The discharge time constant is the product of discharge resistance and capacitor.
The repid discharge tri-state gate is all same phase tri-state gate, either, the repid discharge with quick charge tri-state gate
Tri-state gate and quick charge tri-state gate are all inverting tri-state door.
The first counting impulse generating unit, the second counting and detecting device for counting impulse generating unit are opened for photoelectricity
Close Hall switch magnetic reed switch inductance approach switch or capacitive approach switch.
The production line of bar steel splitting counts steel method by including the first counting impulse generating unit, the second counting pulse automatically
It generates unit, the first burst pulse filter element, the second burst pulse filter element, count processing unit, the transformation of the first transmission speed
Production line of bar steel splitting several steel devices realizations automatically of unit, the second transmission speed converter unit.
First pulse signal for counting impulse generating unit output is the first inceptive impulse, the first burst pulse filter element pair
First inceptive impulse obtains after carrying out burst pulse filtering and exports the first counting pulse；Second counts impulse generating unit output
Pulse signal is the second inceptive impulse, and the second burst pulse filter element obtains simultaneously after carrying out burst pulse filtering to the second inceptive impulse
Output second counts pulse；Processing unit is counted respectively to count the first counting pulse, the second counting pulse.First transmission
The input signal of speed change unit is the first bar transmission speed for counting impulse generating unit installation place, the control electricity of output
Press the power supply as repid discharge tri-state gate and quick charge tri-state gate in the first burst pulse filter element.Second transmission speed becomes
The input signal for changing unit is the second bar transmission speed for counting impulse generating unit installation place, the control voltage conduct of output
The power supply of repid discharge tri-state gate and quick charge tri-state gate in second burst pulse filter element.
First burst pulse filter element, the second burst pulse filter element are the burst pulse filter element.
The beneficial effects of the invention are as follows：It is different to bar transmission is mounted on that the production line of bar steel splitting counts steel method automatically
The counting pulse that two counting and detecting devices (i.e. counting impulse generating unit) of position generate is counted respectively, be avoided that or
Bar intersects, is overlapped bring counting error when person reduces automatic number steel；Positive burst pulse during the negative broad pulse of automatic fitration and
Negative burst pulse just during broad pulse, and the continuous positive burst pulse of quick-recovery filter capacity filtering or negative burst pulse can do fastly
Signal is disturbed, the rising edge in counting pulse signal is eliminated and continuously shakes and continuously shaken with failing edge, avoids or reduces counting and miss
Difference；The burst pulse maximum width for needing to filter can follow bar product transmission speed to carry out adaptive change, and can be by changing
Become circuit parameter to be adjusted.
Detailed description of the invention
Fig. 1 is that production line of bar steel splitting counts steel Installation practice structural block diagram automatically；
Fig. 2 is burst pulse filter element embodiment；
Fig. 3 is the input pulse and output pulse waveform of burst pulse filter element embodiment；
Fig. 4 is transmission speed converter unit embodiment.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
Steel Installation practice structural block diagram is counted automatically as shown in Figure 1 for production line of bar steel splitting.First, which counts pulse, generates
Unit 101 exports the first inceptive impulse M1, carries out burst pulse filtering to M1 by the first burst pulse filter element 201, is filtered out
First after disturbing pulse counts pulse N1；Second, which counts impulse generating unit 102, exports the second inceptive impulse M2, by second
Burst pulse filter element 202 carries out burst pulse filtering to M2, obtains filtering out the second counting pulse N2 after disturbing pulse.First
Count pulse N1, the second counting pulse N2 is sent to and counts processing unit 301.
First counts that impulse generating unit, second to count impulse generating unit be 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
An inceptive impulse signal is exported when production line has bar to pass 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 be mounted in bar and transmit the different location of same section of chain, for example, it is same to be 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 automatic number
The count results of steel device.If it is continuous counter is carried out, a cycle time X can be set first, at each period
Between in, take to N1, N2 count in numerical value the greater as in the cycle time automatically count steel devices count results.Due to
The counting and detecting device of one counting impulse generating unit and the second counting impulse generating unit is mounted on the different positions of bar transmission
It sets, same bar reaches different at the time of the first counting impulse generating unit and the second counting impulse generating unit.If same stick
Material counts impulse generating unit transport from first and reaches the second time phase difference X1 for counting impulse generating unit, then second counts arteries and veins
The cycle time X that punching generates unit setting counts X lag time same period time of impulse generating unit setting than first
X1。
When continuous counter, or one count value of setting, as the period is counted, the numerical value in counting 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.
Counting processing unit can be realized using various methods well-known to those skilled in the art, it is preferred to use MCU is
The circuit of core is realized.
The composition of burst pulse filter element includes controllable discharge circuit, controllable charging circuit, capacitor, Schmidt circuit.
It is illustrated in figure 2 burst pulse filter element embodiment.In embodiment, repid discharge diode, charging resistor, quickly
The tri-state gate that discharges is respectively diode D11, resistance R11, tri-state gate T11, constitutes controllable discharge circuit；Two pole of quick charge
Pipe, discharge resistance, quick charge tri-state gate are respectively diode D12, resistance R12, tri-state gate T12, constitute controllable charging electricity
Road；Capacitor is capacitor C11.Schmidt circuit F11 is therefore, pulse P2 and input to be exported in embodiment with phase Schmidt circuit
The same phase of pulse P1.The input terminal of a termination Schmidt circuit of capacitor C11, i.e. the input terminal A3 of F11, other end are connected to public affairs
Altogether.
In Fig. 2 embodiment, Schmidt circuit F11 is to export pulse P2 (A4 point in Fig. 2) with phase Schmidt circuit and directly connect
It is connected to the enabled control terminal of tri-state gate T11, tri-state gate T12, tri-state gate T11, tri-state gate T12 are respectively that low level, high level make
It can be effective.The high and low level of output pulse P2 controls tri-state gate T12 respectively and is in working condition, is illegal state, exports pulse P2
High and low level control respectively tri-state gate T11 be illegal state, be in working condition.By the control of output pulse P2, tri-state gate
In T11 and tri-state gate T12 always one in state is in working condition, it is illegal state state that another, which is in,.Work as tri-state
When door T11, tri-state gate T12 use the enabled effective or high level of low level to enable effective device simultaneously, one of them
It is controlled by the inversion signal of output pulse P2.
Fig. 3 is the input pulse and output pulse waveform of burst pulse filter element embodiment.In Fig. 3, P1 is input pulse,
P2 is output pulse, and when P1 low level is normal negative broad pulse, A3 point current potential is consistent with A1 point low level current potential in Fig. 2,
P2 is low level, and tri-state gate T11 is in working condition, and the A1 level point of output is consistent with A0 point；T12 is illegal state, output
For high-impedance state.The high level of positive burst pulse 11 charges to capacitor C11 by charging resistor R11, increase A3 point current potential；Due to narrow
The width of pulse 11 is less than time T1, and A3 point current potential is still below the upper limit threshold of Schmidt circuit F11 at the end of burst pulse 11
Voltage, therefore, P2 are maintained low level, and tri-state gate T11 maintenance is in working condition；At the end of burst pulse 11, A1 point becomes again
Low level and capacitor C11 repid discharge is made by repid discharge diode D11, makes A3 point current potential and A1 point low level current potential one
It causes, restores to burst pulse 11 state before arriving, anti-interference ability is restored rapidly, when continuous just narrow followed by having
When pulse interference signal, can equally it filter out.Positive burst pulse 12, positive burst pulse 13 width be respectively less than time T1, therefore, when
At the end of each of burst pulse 12, burst pulse 13, P2 is maintained low level, and A1 point becomes low level and again by quick
Discharge diode D11 makes capacitor C11 repid discharge, keeps A3 point current potential consistent with A1 point low level current potential.
Pulse 14 is normal positive broad pulse, and for P1 when maintaining high level time to reach T1 after rising edge 20, A1 point is high
Being charged by charging resistor R11 to capacitor C11 for level, makes A3 point current potential rise the upper limit threshold for reaching Schmidt circuit F11
Voltage, Schmidt circuit F11 output P2 become high level from low level at rising edge 25, make tri-state gate T11 illegal state,
T12 is in working condition, and the A2 level point of output is consistent with A0 point；The high level of A2 point is made by quick charge diode D12
Capacitor C11 quick charge keeps A3 point current potential consistent with A2 point high level current potential, and P2 is maintained high level.
The low level of negative burst pulse 15 discharges to capacitor C11 by discharge resistance R12, declines A3 point current potential；Due to narrow
The width of pulse 15 is less than time T2, and A3 point current potential is still higher than the lower limit threshold of Schmidt circuit F11 at the end of burst pulse 15
Voltage, therefore, P2 are maintained high level, and tri-state gate T12 maintenance is in working condition；At the end of burst pulse 15, A2 point becomes again
High level and capacitor C11 quick charge is made by quick charge diode D12, makes A3 point current potential and A2 point high level current potential one
Cause, restore to burst pulse 15 state before arriving, anti-interference ability restored rapidly, when followed by have continuously bear it is narrow
When pulse interference signal, can equally it filter out.Width when being respectively less than of negative burst pulse 16, negative burst pulse 17, negative burst pulse 18
Between T2, therefore, at the end of each of burst pulse 16, burst pulse 17, burst pulse 18, P2 is maintained high level, A2 point weight
Newly become high level and capacitor C11 quick charge is made by quick charge diode D12, makes A3 point current potential and A2 point high level electricity
Position is consistent.
P1 indicates that P1 has a normal negative broad pulse, A2 when maintaining low level time to reach T2 after failing edge 21
The low level of point discharges to capacitor C11 by discharge resistance R12, and the decline of A3 point current potential is made to reach the lower limit of Schmidt circuit F11
The output P2 of threshold voltage, Schmidt circuit F11 becomes low level from high level at failing edge 26, makes tri-state gate T11 work
Make state, T12 is illegal state；The low level of A1 point makes capacitor C11 repid discharge by repid discharge diode D11, makes A3
Point current potential is consistent with A1 point low level current potential, and P2 is maintained low level.19 width of negative broad pulse of P1 is greater than T2, in negative broad pulse
When maintaining high level time to reach T1 after 19 rising edge 22, P2 becomes high level from low level at rising edge 27.
Burst pulse filter element is by burst pulse 11, burst pulse 12, burst pulse 13, the burst pulse 15, burst pulse in P1 signal
16, 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 signal
The positive broad pulse 23 and negative broad pulse 24 answered.The output same phase of pulse P2 and input pulse P1, and 14 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 are positive burst pulse, and wherein burst pulse 11 is single disturbing pulse, narrow arteries and veins
Punching 12, the continuous Vibrating pulse that burst pulse 13 is input pulse edge.Time T1 is that burst pulse filter element can filter most
Big positive narrow pulse width.High level current potential, low level current potential and the Shi Mi that T1 is exported by charge constant, tri-state gate T11
The upper limit threshold voltage joint effect of special circuit F11.Under normal conditions, the high level current potential and low level of tri-state gate T11 output
Current potential is definite value, and therefore, the value for adjusting T1 can be electric by changing the upper limit threshold of charge constant or Schmidt circuit
It presses to carry out.In Fig. 2, charge constant is the product of charging resistor R11 and capacitor C11.The burst pulse filter element is permitted
Perhaps positive pulse signal of the width greater than T1 passes through.
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 input pulse edge.Time T2 is burst pulse mistake
The negative narrow pulse width of maximum that filter unit can filter.The high level electricity that T2 is exported by discharge time constant, tri-state gate T12
Position, low level current potential and Schmidt circuit F11 lower limit threshold voltage joint effect.Under normal conditions, tri-state gate T12 is exported
High level current potential and low level current potential are definite value, and therefore, the value for adjusting T2 can be by changing discharge time constant or applying close
The lower limit threshold voltage of special circuit carries out.In Fig. 2, discharge time constant is the product of discharge resistance R12 and capacitor C11.Institute
The undersuing that stating burst pulse filter element allows width to be greater than greater than T2 passes through.
In Fig. 2, capacitor C11 connect one end publicly can also with reconfiguration Schmidt circuit F11 power supply end.
In Fig. 2, Schmidt circuit F11 also can choose reverse phase Schmidt circuit, and the high level for exporting pulse P2 at this time is answered
The control repid discharge tri-state gate is in working condition, quick charge tri-state gate is illegal state, exports the low level control of pulse
Repid discharge tri-state gate is illegal state, quick charge tri-state gate is in working condition.For example, when Schmidt circuit F11 choosing in Fig. 2
Reverse phase Schmidt circuit is selected, when will export pulse P2 and being connected directly to the enabled control terminal of tri-state gate T11, tri-state gate T12, three
State door T11 should correspondingly be changed to high level and enable effectively, and it is enabled effective that tri-state gate T12 is correspondingly changed to low level.Selection is anti-
The working principle of circuit is identical as Fig. 2 when phase Schmidt circuit, only output pulse at this time and input pulse reverse phase.
Repid discharge tri-state gate and quick charge tri-state gate can have the inverting tri-state door of inverter functionality with simultaneous selection.
When repid discharge tri-state gate and quick charge tri-state gate simultaneous selection inverting tri-state door, it is equivalent to and increases by one at input pulse end
A phase inverter first will carry out again anti-narrow pulse interference after input pulse reverse phase, working principle is identical as Fig. 2.
The input signal of the Schmidt circuit is the voltage on capacitor, it is therefore desirable to which Schmidt circuit has high input
Impedance operator.Schmidt circuit can choose cmos schmitt phase inverter CD40106 with high input impedance charcteristic,
74HC14, or selection have the devices such as cmos schmitt NAND gate CD4093,74HC24 of high input impedance charcteristic.CMOS
Schmitt inverter or the upper limit threshold voltage of cmos schmitt NAND gate, lower limit threshold voltage are relevant to device solid
Definite value, therefore, positive narrow pulse width, the negative narrow pulse width needs for adjusting the input that can be filtered are normal by changing the charging time
Number, discharge time constant carry out.It is constituted with schmitt inverter or Schmidt's NAND gate with phase Schmidt circuit, is needed
Increase level-one phase inverter behind schmitt inverter or Schmidt's NAND gate.
Schmidt circuit is also an option that using operational amplifier and constitutes, and Schmidt's electricity is constituted using operational amplifier
Road can neatly change upper limit threshold voltage, lower limit threshold voltage.Similarly, Schmidt's electricity is constituted using operational amplifier
Lu Shi is needed using structure and circuit with high input impedance charcteristic.
As shown in Figure 1, it further includes the first transmission speed converter unit that production line of bar steel splitting counts steel Installation practice automatically
401, the second transmission speed converter unit 402.Fig. 4 is transmission speed converter unit embodiment, is suitable for the first transmission speed and becomes
When changing unit, the transmission speed n of the input of transmission speed converter unit shown in Fig. 4 is the first counting impulse generating unit peace in Fig. 1
Bar transmission speed n1 at dress, output UK are the control of the transmission speed input terminal sent in Fig. 1 to the first burst pulse filter element
Voltage UK1 processed；When suitable for the second transmission speed converter unit, the input transmission speed n of transmission speed converter unit shown in Fig. 4
The bar transmission speed n2 for counting impulse generating unit installation place in Fig. 1 second, output UK are to send in Fig. 1 to the second burst pulse
The control voltage UK2 of the transmission speed input terminal of filter element.Similarly, the embodiment conduct of burst pulse filter element shown in Fig. 2
When the first burst pulse filter element, the UK in Fig. 2 is UK1；The embodiment of burst pulse filter element shown in Fig. 2 is as the second burst pulse
When filter element, the UK in Fig. 2 is UK2.UK1 is the first control voltage, and UK2 is the second control voltage.
First counts the narrow arteries and veins of continuously shake for exporting porch of impulse generating unit, the second counting impulse generating unit
The width of punching is respectively by bar transmission speed n1, bar transmission speed n2, i.e., by the transmission speed of transmission speed converter unit input
The influence for spending n changes.When transmission speed n increases, the first counting impulse generating unit, second count the defeated of impulse generating unit
The width of the continuous Vibrating pulse of porch reduces out；When product transmission speed n reduces, first, which counts pulse, generates list
First, the second continuous Vibrating pulse for exporting porch for counting impulse generating unit width increases.
When the counting and detecting device of the first counting impulse generating unit and the second counting impulse generating unit is respectively arranged in
When the different section chains of bar transmission, bar transmission speed n1 is different from bar transmission speed n2, the first transmission speed converter unit
The UK1 of output and the UK2 that the second transmission speed converter unit exports are unequal.When the first counting impulse generating unit and the second meter
When the counting and detecting device of number impulse generating units is mounted on bar and transmits the different location of same section of chain, bar transmission speed n1
Identical as bar transmission speed n2, the UK1 and the second transmission speed converter unit of the first transmission speed converter unit output are exported
UK2 it is equal, the second transmission speed converter unit can be omitted at this time, using the first transmission speed converter unit output control electricity
Press UK1 simultaneously as control voltage UK2.
In Fig. 4, F71 is transmission speed sensor, and transmission speed n is converted to voltage Un and exported by F71.Amplifier F72 and electricity
It hinders R76, resistance R77, resistance R78, resistance R79 and forms zero adjustment circuit, control voltage UK is exported from amplifier F72 output end.
The effect of zero adjustment circuit first is that by change input zero adjust voltage VREF, by the minimum speed of transmission speed n
(usually 0) corresponding control voltage UK is adjusted to non-zero value；Second is that improving the driving capability of control voltage UK.Input speed model
The range of corresponding control voltage UK is enclosed by adjusting transmission speed sensor F71 parameter, zero adjustment circuit parameter and zero
Voltage VREF is adjusted to carry out.In Fig. 4 embodiment, when transmission speed n increases, output control voltage UK increases；Transmission speed n
When reduction, output control voltage UK reduces.
Control voltage UK is sent to burst pulse filter element, to repid discharge tri-state gate in burst pulse filter element, quickly
The high level current potential of charging tri-state gate output is controlled, when transmission speed n increases, repid discharge tri-state gate, quick charge
The high level current potential of tri-state gate output increases；When transmission speed n reduces, repid discharge tri-state gate, quick charge tri-state gate are defeated
High level current potential out reduces.
Repid discharge tri-state gate, quick charge tri-state gate using CMOS tri-state gate circuit, high-speed cmos tri-state gate circuit come
It constitutes, using control voltage UK as repid discharge tri-state gate, the power supply of quick charge tri-state gate.In embodiment, it will control
Power supply of the voltage UK as tri-state gate T11 and tri-state gate T12.At this point, the height electricity of tri-state gate T11 and tri-state gate T12 output
Put down the high level electricity exported for (close) power supply potential, i.e. control voltage UK directly as tri-state gate T11 and tri-state gate T12
Position, when control voltage UK increases, the high level current potential of tri-state gate T11 output and the high level current potential of tri-state gate T12 output increase
Greatly.It in the corresponding control voltage UK range of adjustment transmission speed n range, filter the range for controlling voltage UK satisfaction can
The positive narrow pulse width T1 of maximum, maximum negative narrow pulse width T2 adjusting range requirement, while controlling the range of voltage UK also
Need to meet the power supply area requirement of tri-state gate T11 and tri-state gate T12.
When the upper limit threshold voltage of constant and Schmidt circuit remains unchanged between when charging, transmission speed n increases, tri-state
The high level current potential of door T11 output increases, and is accelerated by speed of the charging resistor to capacitor charging, reduces T1；Transmission speed
It spends n to reduce, the high level current potential of tri-state gate T11 output reduces, and slows down by speed of the charging resistor to capacitor charging, makes T1
Increase；The charging rate for realizing controllable charging circuit is controlled by transmission speed n.When realizing disturbing pulse filtering in other words,
The transmission speed n self adaptive control of the positive narrow pulse width T1 of the maximum that can be filtered, i.e. when transmission speed n changes, T1 is at one
Transmission speed n is followed to change in given range.If changing the upper limit threshold of charge constant either Schmidt circuit
Voltage, then the given range that T1 follows transmission speed n to change can integrally change, for example, increasing charge constant, then same
Transmission speed n variation range in, T1 follow constant interval upper limit value and lower limit value increase.
When the lower limit threshold voltage of constant and Schmidt circuit remains unchanged between upon discharging, transmission speed n increases, tri-state
The high level current potential of door T12 output increases, and is accelerated by discharge resistance to the speed that capacitor discharges, reduces T2；Transmission speed
It spends n to reduce, the high level current potential of tri-state gate T12 output reduces, and slows down by the speed that discharge resistance discharges to capacitor, makes T2
Increase；The charging rate for realizing controllable charging circuit is controlled by transmission speed n.When realizing disturbing pulse filtering in other words,
The transmission speed n self adaptive control for the negative narrow pulse width T2 of maximum that can be filtered, i.e. when transmission speed n changes, T2 is at one
Transmission speed n is followed to change in given range.If changing the lower limit threshold of discharge time constant either Schmidt circuit
Voltage, then the given range that T2 follows transmission speed n to change can integrally change, for example, reducing discharge time constant, then same
Transmission speed n variation range in, T2 follow constant interval upper limit value and lower limit value reduce.
Claims (10)
1. a kind of production line of bar steel splitting counts steel method automatically, it is characterised in that：
The first counting pulse is installed respectively in the different section chains of bar transmission, or in the different location that bar transmits same section of chain
Generate the counting and detecting device of unit, the second counting impulse generating unit；The pulse for counting impulse generating unit output to first
Signal and the pulse signal of the second counting impulse generating unit output carry out burst pulse filtering and counting respectively, take counting therein
Numerical value the greater counts the count results of steel as production line of bar steel splitting automatically；
The pulse signal and second for counting impulse generating unit output to first count the pulse signal of impulse generating unit output
Burst pulse filtering is carried out respectively to be realized by the burst pulse filter element that bilateral analog switch controls.
2. production line of bar steel splitting according to claim 1 counts steel method automatically, it is characterised in that：The burst pulse filtering
The narrow pulse width of unit filtering is controlled by bar transmission speed.
3. production line of bar steel splitting according to claim 2 counts steel method automatically, it is characterised in that：The burst pulse filtering
Unit includes controllable charging circuit, controllable discharge circuit, capacitor, Schmidt circuit；One end of the capacitor is connected to Schmidt
Circuit input end, other end are connected to publicly the either power supply of Schmidt circuit；The controllable charging circuit
Input is the input pulse end of burst pulse filter element, and output is connected to Schmidt circuit input terminal；The controllable discharge circuit
Input be connected to the input pulse end of burst pulse filter element, output is connected to Schmidt circuit input terminal；The Schmidt
The output end of circuit is the output pulse ends of burst pulse filter element.
4. production line of bar steel splitting according to claim 3 counts steel method automatically, it is characterised in that：The controllable charging electricity
Road includes repid discharge diode, charging resistor, repid discharge tri-state gate；The repid discharge diode cathode is connected to quickly
Discharge tri-state gate output terminal, and anode is controllable charging circuit output end；The charging resistor and repid discharge diodes in parallel；Institute
Stating controllable discharge circuit includes quick charge diode, discharge resistance, quick charge tri-state gate；The quick charge diode sun
Pole is connected to quick charge tri-state gate output terminal, and cathode is controllable discharge circuit output end；The discharge resistance and quick charge
Diodes in parallel；The repid discharge tri-state gate input terminal is controllable charging circuit input end；The quick charge tri-state gate is defeated
Entering end is controllable discharge circuit input terminal；The repid discharge tri-state gate and quick charge tri-state gate are filtered single by place burst pulse
The output pulse control of member.
5. production line of bar steel splitting according to claim 4 counts steel method automatically, it is characterised in that：The repid discharge three
State door and quick charge tri-state gate are by the pulse controlled specific method of output of place burst pulse filter element, when Schmidt's electricity
When Lu Weitong phase Schmidt circuit, the low level control repid discharge tri-state gate for exporting pulse is in working condition, quick charge three
State door is illegal state, and the high level control repid discharge tri-state gate for exporting pulse is illegal state, quick charge tri-state gate is
Working condition；When Schmidt circuit is reverse phase Schmidt circuit, the high level control repid discharge tri-state gate for exporting pulse is
Working condition, quick charge tri-state gate are illegal state, and the low level control repid discharge tri-state gate for exporting pulse is to forbid shape
State, quick charge tri-state gate are in working condition.
6. the production line of bar steel splitting according to any one of claim 4-5 counts steel method automatically, it is characterised in that：Institute
The method that control by bar transmission speed of narrow pulse width for stating the filtering of burst pulse filter element is, repid discharge tri-state gate, fastly
The high level current potential of speed charging tri-state gate output is controlled by bar transmission speed.
7. production line of bar steel splitting according to claim 6 counts steel method automatically, it is characterised in that：The repid discharge three
State door, the method that the high level current potential of quick charge tri-state gate output is controlled by bar transmission speed are, when bar transmission speed
When increase, the high level current potential that repid discharge tri-state gate, quick charge tri-state gate export increases；When bar transmission speed reduces
When, the high level current potential that repid discharge tri-state gate, quick charge tri-state gate export reduces.
8. production line of bar steel splitting according to claim 7 counts steel method automatically, it is characterised in that：Detect bar transmission speed
It spends and is converted to control voltage；Voltage will be controlled as repid discharge tri-state gate in burst pulse filter element and quick charge tri-state
The power supply of door.
9. the production line of bar steel splitting according to any one of claim 4-5 counts steel method automatically, it is characterised in that：Institute
It states the positive narrow pulse width of maximum that burst pulse filter element can filter and also passes through change charge constant or Schmidt's electricity
The upper limit threshold voltage on road is controlled, the negative narrow pulse width of maximum that can be filtered also pass through change discharge time constant or
The lower limit threshold voltage of person's Schmidt circuit controls；The charge constant is the product of charging resistor and capacitor；
The discharge time constant is the product of discharge resistance and capacitor.
10. the production line of bar steel splitting according to any one of claim 4-5 counts steel method automatically, it is characterised in that：Institute
It is all same phase tri-state gate that repid discharge tri-state gate, which is stated, with quick charge tri-state gate, either, the repid discharge tri-state gate and fast
Speed charging tri-state gate is all inverting tri-state door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810455318.7A CN108875888B (en) | 2016-06-15 | 2016-06-15 | Automatic steel counting method for steel division of bar production line |
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| CN201810455318.7A CN108875888B (en) | 2016-06-15 | 2016-06-15 | Automatic steel counting method for steel division of bar production line |
| CN201610421539.3A CN106056204B (en) | 2016-06-15 | 2016-06-15 | Production line of bar steel splitting counts steel device automatically |
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| CN108710935A (en) * | 2018-05-17 | 2018-10-26 | 孝感量子机电科技有限公司 | Parts count apparatus and system |
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| CN2570893Y (en) * | 2001-10-31 | 2003-09-03 | 石家庄钢铁有限责任公司 | Metallurgy bar counter |
| US20110290036A1 (en) * | 2010-05-28 | 2011-12-01 | Marty Lynn Pflum | Performing Metering Using Pulse Counting |
| CN103575312A (en) * | 2013-11-25 | 2014-02-12 | 济南飞越机电科技有限公司 | Jitter elimination method of incremental photoelectric encoder for photoelectric rotating table |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100406371B1 (en) * | 1998-12-24 | 2004-01-24 | 주식회사 우진 | Apparatus and method for detecting thickness of slag layer in ladle |
| CN104463319B (en) * | 2014-11-10 | 2017-10-27 | 浙江中烟工业有限责任公司 | A kind of filter stick optical counter |
| CN105513082B (en) * | 2015-12-28 | 2018-07-24 | 中建三局第一建设工程有限责任公司 | A kind of bundled rods identification method of counting and device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570893Y (en) * | 2001-10-31 | 2003-09-03 | 石家庄钢铁有限责任公司 | Metallurgy bar counter |
| US20110290036A1 (en) * | 2010-05-28 | 2011-12-01 | Marty Lynn Pflum | Performing Metering Using Pulse Counting |
| US20110291678A1 (en) * | 2010-05-28 | 2011-12-01 | Marty Lynn Pflum | Low Power Metering Using Pulse Counting |
| CN103575312A (en) * | 2013-11-25 | 2014-02-12 | 济南飞越机电科技有限公司 | Jitter elimination method of incremental photoelectric encoder for photoelectric rotating table |
| 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 |
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| CN106056204B (en) | 2018-06-26 |
| CN108875888B (en) | 2022-01-21 |
| CN106056204A (en) | 2016-10-26 |
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